/* ============================================================
   Cynthia Wong — Personal Website
   Design: Gen Z Aesthetic, Liquid Glass, Cards Stack
   ============================================================ */

/* --- CSS Custom Properties --- */
:root {
  /* Brand Colors (from original) */
  --color-brand-blue: #323462;
  --color-brand-purple: #7B6AAA;
  --color-brand-orange: #FA9173;
  --color-brand-yellow: #FFEFD6;
  --color-brand-green: #B3E56C;
  --color-brand-beige: #F5F0E8;
  --color-brand-pale-orange: #FFE8DC;
  --color-brand-pale-pink: #FFE8F0;
  --color-brand-pale-yellow: #FFF8E8;
  --color-brand-almond: #F0E8D8;

  /* Neutrals */
  --color-neutral-darkest: #1A1A2E;
  --color-neutral-dark: #2D2E38;
  --color-neutral: #6B6C76;
  --color-neutral-light: #B8B9C0;
  --color-neutral-lightest: #E2E2E2;
  --color-white: #FFFFFF;

  /* Opacity variants */
  --opacity-white-5: rgba(255, 255, 255, 0.05);
  --opacity-white-10: rgba(255, 255, 255, 0.10);
  --opacity-white-15: rgba(255, 255, 255, 0.15);
  --opacity-white-20: rgba(255, 255, 255, 0.20);
  --opacity-white-30: rgba(255, 255, 255, 0.30);
  --opacity-white-40: rgba(255, 255, 255, 0.40);
  --opacity-white-50: rgba(255, 255, 255, 0.50);
  --opacity-white-60: rgba(255, 255, 255, 0.60);

  --opacity-neutral-darkest-5: rgba(26, 26, 46, 0.05);
  --opacity-neutral-darkest-10: rgba(26, 26, 46, 0.10);
  --opacity-neutral-darkest-15: rgba(26, 26, 46, 0.15);
  --opacity-neutral-darkest-20: rgba(26, 26, 46, 0.20);
  --opacity-neutral-darkest-30: rgba(26, 26, 46, 0.30);
  --opacity-neutral-darkest-40: rgba(26, 26, 46, 0.40);
  --opacity-neutral-darkest-50: rgba(26, 26, 46, 0.50);
  --opacity-neutral-darkest-60: rgba(26, 26, 46, 0.60);
  --opacity-neutral-darkest-70: rgba(26, 26, 46, 0.70);

  /* New accent colors */
  --color-accent-pink: #F0C5D6;
  --color-accent-purple: #C4B5FD;
  --color-accent-blue: #A5B4FC;
  --color-accent-rose: #F9A8D4;
  --color-accent-violet: #A78BFA;

  /* Dark section colors */
  --color-dark-bg: #0A0A0F;
  --color-dark-card: #12121A;
  --color-dark-card2: #1A1A24;
  --color-dark-card3: #16161F;
  --color-dark-border: rgba(255, 255, 255, 0.08);

  /* Glass */
  --glass-bg: rgba(255, 255, 255, 0.08);
  --glass-border: rgba(255, 255, 255, 0.18);
  --glass-blur: blur(16px);

  /* Typography — scaled up */
  --font-display: 'Castoro Titling', 'Charmonman', serif;
  --font-script: 'Carattere', 'Charmonman', cursive;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'Space Grotesk', 'DM Sans', monospace;
  --font-heading: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --text-h1: clamp(3.5rem, 6vw, 5.5rem);
  --text-h2: clamp(2.5rem, 4vw, 4rem);
  --text-h3: clamp(2rem, 3vw, 3rem);
  --text-h4: clamp(1.5rem, 2vw, 2.25rem);
  --text-h6: clamp(1.1rem, 1.5vw, 1.35rem);
  --text-large: clamp(1.1rem, 1.5vw, 1.35rem);
  --text-medium: clamp(1.05rem, 1.3vw, 1.2rem);
  --text-regular: clamp(1rem, 1.2vw, 1.1rem);
  --text-small: 0.95rem;
  --text-caption: 0.85rem;
  --text-tagline: 0.85rem;

  /* Radius */
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --radius-full: 9999px;
  --radius-large: 50px;

  /* Spacing */
  --section-padding: clamp(4rem, 8vw, 8rem);

  /* Transitions */
  --ease-out-expo: cubic-bezier(0.19, 1, 0.22, 1);
  --ease-out-back: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-out: cubic-bezier(0.25, 0.1, 0.25, 1);
  --ease-power3: cubic-bezier(0.5, 0, 0, 1);

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.12);
  --shadow-xl: 0 20px 60px rgba(0,0,0,0.15);
}

/* --- Reset & Base --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  -webkit-text-size-adjust: 100%;
  -ms-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-neutral-darkest);
  background-color: var(--color-white);
  overflow-x: hidden;
}

::selection {
  background: #FFE2B4;
  color: var(--color-neutral-dark);
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; border: 0; }
video { max-width: 100%; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

/* --- Fluid Font Sizing --- */
@media screen and (min-width: 1366px) {
  html { font-size: clamp(16px, 1.17vw, 20px); }
}
@media screen and (max-width: 1366px) {
  html { font-size: clamp(15.5px, 2.28vw, 17.5px); }
}
@media screen and (max-width: 768px) {
  html { font-size: clamp(15.5px, 2.08vw, 17.5px); }
}
@media screen and (max-width: 375px) {
  html { font-size: clamp(16px, 4.53vw, 17px); }
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.15;
  margin: 0;
}

p { margin: 0; }

.section-label {
  font-family: var(--font-mono);
  font-size: var(--text-caption);
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-accent-violet);
  margin-bottom: 0.75rem;
  display: inline-block;
}

.heading-style-h1 {
  font-size: var(--text-h1);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.02em;
}

.heading-style-h2 {
  font-size: var(--text-h2);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.01em;
}

.heading-style-h3 {
  font-size: var(--text-h3);
  font-weight: 600;
  line-height: 1.15;
}

.heading-style-h4 {
  font-size: var(--text-h4);
  font-weight: 600;
  line-height: 1.2;
}

.heading-style-h6 {
  font-size: var(--text-h6);
  font-weight: 600;
  line-height: 1.25;
}

.text-size-large {
  font-size: var(--text-large);
  line-height: 1.4;
}

.text-size-medium {
  font-size: var(--text-medium);
  line-height: 1.55;
}

.text-size-regular {
  font-size: var(--text-regular);
  line-height: 1.55;
}

.text-size-small {
  font-size: var(--text-small);
  line-height: 1.5;
}

.text-tagline {
  font-size: var(--text-tagline);
  font-weight: 500;
  color: var(--color-neutral-darkest);
  line-height: 1.4;
}

.text-color-white { color: var(--color-white); }
.text-color-orange { color: var(--color-brand-orange); }
.text-color-yellow { color: var(--color-brand-yellow); }
.text-color-neutral-darkest { color: var(--color-neutral-darkest); }

.text-style-muted { color: var(--opacity-neutral-darkest-50); }
.text-style-white-40 { color: var(--opacity-white-40); }
.text-style-muted-alternative { color: var(--opacity-white-50); }

.text-align-center { text-align: center; }
.text-align-left { text-align: left; }

.max-width-xxlarge { max-width: 1200px; }
.max-width-xlarge { max-width: 1024px; }
.max-width-large { max-width: 768px; }
.max-width-medium { max-width: 560px; }
.max-width-small { max-width: 400px; }

.wrap-width-90 { max-width: 90%; }
.align-center { margin-left: auto; margin-right: auto; }

/* --- Layout --- */
.container-large {
  max-width: 1800px;
  margin: 0 auto;
  padding: 0 clamp(2rem, 4vw, 5rem);
  width: 100%;
}

.container {
  max-width: 1600px;
  margin: 0 auto;
  padding: 0 clamp(2rem, 4vw, 5rem);
  width: 100%;
}

.container-medium {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 clamp(2rem, 4vw, 4rem);
  width: 100%;
}

.container-narrow {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 clamp(1.5rem, 3vw, 3rem);
}

.section {
  padding: var(--section-padding) 0;
}

.education-section > .container,
.background-section > .container,
.work-section > .container {
  max-width: 1200px;
}

/* --- Utilities --- */
.margin-0 { margin: 0 !important; }
.padding-0 { padding: 0 !important; }

.margin-top { margin-right: 0; margin-bottom: 0; margin-left: 0; }
.padding-top { padding-right: 0; padding-bottom: 0; padding-left: 0; }
.margin-bottom { margin-top: 0; margin-right: 0; margin-left: 0; }
.padding-bottom { padding-top: 0; padding-right: 0; padding-left: 0; }

.margin-xsmall { margin-bottom: 0.5rem; }
.margin-xxsmall { margin-bottom: 0.25rem; }
.margin-small { margin-bottom: 1rem; }
.margin-medium { margin-bottom: 2rem; }
.margin-large { margin-bottom: 3rem; }
.margin-xlarge { margin-bottom: 4rem; }

.hide { display: none !important; }
.text-nowrap { white-space: nowrap; }

/* ============================================================
   NAVIGATION — Liquid Glass Pill (centered)
   ============================================================ */

nav.navbar_wrapper {
  position: fixed;
  top: -120px !important;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1000;
  max-width: 95vw;
  transition: top 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}

nav.navbar_wrapper.visible {
  top: 0.8rem !important;
}

/* ── Layer 1: Outer liquid glass shell ── */
.nav-outer {
  position: relative;
  background: rgba(195, 170, 255, 0.10);
  backdrop-filter: blur(30px);
  -webkit-backdrop-filter: blur(30px);
  border-radius: 100px;
  padding: 2px;
  box-shadow:
    0 0 0 1px rgba(195, 170, 255, 0.18),
    0 4px 32px rgba(0, 0, 0, 0.06),
    0 0 80px rgba(195, 170, 255, 0.06);
  transition: box-shadow 0.5s ease;
}

.nav-outer.scrolled {
  box-shadow:
    0 0 0 1px rgba(195, 170, 255, 0.35),
    0 4px 32px rgba(0, 0, 0, 0.10),
    0 0 100px rgba(195, 170, 255, 0.12);
}

/* ── Layer 2: Inner liquid glass shell ── */
nav.navbar_wrapper .nav-inner {
  position: relative;
  background: rgba(195, 170, 255, 0.08);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-radius: 100px;
  overflow: hidden;
  display: block;
  max-width: none;
  margin: 0;
  padding: 0;
}

/* ── Static gradient border ── */
nav.navbar_wrapper .nav-inner::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 100px;
  padding: 1px;
  background: linear-gradient(
    135deg,
    rgba(195, 170, 255, 0.35),
    rgba(160, 180, 250, 0.25),
    rgba(195, 170, 255, 0.35)
  );
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask-composite: exclude;
  -webkit-mask-composite: xor;
  pointer-events: none;
  z-index: 1;
}

/* ── Button row ── */
.nav-buttons {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.15rem;
  padding: 0.35rem 0.8rem;
  z-index: 2;
}

/* ── Individual liquid nav items ──
   Color is managed by JS (light/dark background auto switch) */
.nav-item {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.38rem 1rem;
  border-radius: 100px;
  text-decoration: none;
  color: rgba(80, 40, 120, 0.85);  /* fallback, overridden by JS on dark bg */
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  white-space: nowrap;
  cursor: pointer;
  transition: color 0.35s ease;
}

/* ── Liquid spot inside each nav item ── */
.nav-item .liquid-spot {
  position: absolute;
  inset: 0;
  border-radius: 100px;
  pointer-events: none;
  z-index: 0;
  background: rgba(195, 170, 255, 0.14);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow:
    0 0 0 1px rgba(195, 170, 255, 0.22),
    inset 0 0 20px rgba(195, 170, 255, 0.10);
  opacity: 0;
  transform: scale(0.9);
  transition:
    opacity 0.4s cubic-bezier(0.22, 1, 0.36, 1),
    transform 0.4s cubic-bezier(0.22, 1, 0.36, 1),
    background 0.4s ease,
    box-shadow 0.4s ease;
}

/* Hover: softly show the liquid spot */
.nav-item:hover .liquid-spot {
  opacity: 0.6;
  transform: scale(1);
  background: rgba(195, 170, 255, 0.20);
  box-shadow:
    0 0 0 1px rgba(195, 170, 255, 0.40),
    inset 0 0 24px rgba(195, 170, 255, 0.15);
}

.nav-item:hover {
  color: #5a3a8a;
}

/* Active state */
.nav-item.active .liquid-spot {
  opacity: 1;
  transform: scale(1);
  background: rgba(195, 170, 255, 0.25);
  box-shadow:
    0 0 0 1px rgba(195, 170, 255, 0.50),
    0 0 18px rgba(195, 170, 255, 0.20),
    inset 0 0 28px rgba(195, 170, 255, 0.18);
}

/* Active state — text color handled by JS for dark/light switching */
.nav-item.active {
  color: #5a3a8a;
  font-weight: 600;
}

/* ── Label above liquid spot ── */
.nav-item span {
  position: relative;
  z-index: 1;
}

/* ── Dark background override: light text + brighter glass ── */
nav.navbar_wrapper.nav-on-dark .nav-item,
nav.navbar_wrapper.nav-on-dark .nav-item.active {
  color: rgba(255, 255, 255, 0.88) !important;
}

nav.navbar_wrapper.nav-on-dark .nav-item:hover,
nav.navbar_wrapper.nav-on-dark .nav-item.active:hover {
  color: #FFFFFF !important;
}

nav.navbar_wrapper.nav-on-dark .nav-outer {
  background: rgba(195, 170, 255, 0.10);
  box-shadow:
    0 0 0 1px rgba(195, 170, 255, 0.25),
    0 4px 32px rgba(0, 0, 0, 0.20),
    0 0 80px rgba(195, 170, 255, 0.08);
}

nav.navbar_wrapper.nav-on-dark .nav-outer.scrolled {
  box-shadow:
    0 0 0 1px rgba(195, 170, 255, 0.40),
    0 4px 32px rgba(0, 0, 0, 0.30),
    0 0 100px rgba(195, 170, 255, 0.15);
}

nav.navbar_wrapper.nav-on-dark .nav-inner {
  background: rgba(195, 170, 255, 0.12);
}

nav.navbar_wrapper.nav-on-dark .nav-inner::before {
  background: linear-gradient(
    135deg,
    rgba(195, 170, 255, 0.45),
    rgba(180, 190, 255, 0.35),
    rgba(195, 170, 255, 0.45)
  );
}

/* liquid spot — brighter on dark bg */
nav.navbar_wrapper.nav-on-dark .nav-item .liquid-spot {
  background: rgba(195, 170, 255, 0.16);
  box-shadow:
    0 0 0 1px rgba(195, 170, 255, 0.32),
    inset 0 0 20px rgba(195, 170, 255, 0.14);
}

nav.navbar_wrapper.nav-on-dark .nav-item:hover .liquid-spot {
  background: rgba(195, 170, 255, 0.25);
  box-shadow:
    0 0 0 1px rgba(195, 170, 255, 0.50),
    inset 0 0 24px rgba(195, 170, 255, 0.22);
}

nav.navbar_wrapper.nav-on-dark .nav-item.active .liquid-spot {
  background: rgba(195, 170, 255, 0.32);
  box-shadow:
    0 0 0 1px rgba(195, 170, 255, 0.60),
    0 0 18px rgba(195, 170, 255, 0.28),
    inset 0 0 28px rgba(195, 170, 255, 0.24);
}

/* ============================================================
   NAVIGATION — Old (removed)
   ============================================================ */

/* ============================================================
   HERO SECTION — Original Design
   ============================================================ */
.hero {
  position: relative;
  width: 100%;
  height: 100vh;
  min-height: 600px;
  overflow: hidden;
  display: flex;
  align-items: center;
  /* Dark fallback removed — background image covers fully */
}

.hero-video_content {
  position: relative;
  z-index: 2;
  width: 100%;
}

.hero-video_content-wrapper {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 2rem;
  width: 100%;
}

/* Hero text hidden class — revealed by JS after Charmonman font loads */
.hero-text-hidden .hero-name,
.hero-text-hidden .hero-tagline,
.hero-text-hidden .button-group {
  opacity: 0;
}

/* Hero Name — Charmonman, right-aligned, large white */
.hero-name_wrapper {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  text-align: right;
  gap: 1.75rem;
  width: fit-content;
  margin-left: auto;
  padding-top: 0.75rem;
}

.hero-name {
  font-family: 'Charmonman', 'Charm', cursive, serif;
  font-size: clamp(3rem, 10vw, 9rem) !important;
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.02em;
  color: #FFFFFF !important;
  margin: 0;
  white-space: nowrap;
  text-align: center;
}

.hero-tagline {
  max-width: 720px !important;
  width: 720px !important;
  color: var(--opacity-white-60);
  text-align: right;
  margin-left: auto;
  margin-top: 1rem;
  display: inline-block !important;
  box-sizing: border-box;
}

.hero-tagline .text-size-regular {
  display: block !important;
  color: var(--opacity-white-60);
  text-align: right;
  width: auto !important;
  max-width: 100% !important;
  font-size: var(--text-medium);
}

/* Hero Background Image */
.hero-video_background-image-wrapper {
  position: absolute;
  inset: 0;
  z-index: 1;
  overflow: hidden;
}

.hero-video_background-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

/* Hero Scroll Indicator */
.hero-scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  animation: bounceDown 2s ease-in-out infinite;
}

.hero-scroll-indicator span {
  display: block;
  width: 24px;
  height: 24px;
  border-right: 2px solid rgba(255,255,255,0.4);
  border-bottom: 2px solid rgba(255,255,255,0.4);
  transform: rotate(45deg);
}

@keyframes bounceDown {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(10px); }
}

/* ============================================================
   BUTTONS
   ============================================================ */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  font-size: var(--text-regular);
  font-weight: 600;
  line-height: 1.2;
  text-align: center;
  border: 1.5px solid transparent;
  border-radius: var(--radius-large);
  cursor: pointer;
  transition: all 0.35s var(--ease-out);
  white-space: nowrap;
}

.button-group {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.button.is-liquid-glass {
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-large);
  color: #FFFFFF;
  box-shadow:
    0 4px 16px rgba(0, 0, 0, 0.12),
    inset 0 1px 0 rgba(255, 255, 255, 0.15);
  position: relative;
  overflow: hidden;
  transition: all 0.35s var(--ease-out);
}

.button.is-liquid-glass:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.35);
  box-shadow:
    0 6px 24px rgba(0, 0, 0, 0.2),
    inset 0 1px 0 rgba(255, 255, 255, 0.25),
    0 0 20px rgba(255, 255, 255, 0.05);
  transform: translateY(-2px);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.8rem 1.8rem;
  font-size: var(--text-regular);
  font-weight: 600;
  letter-spacing: 0.02em;
  border-radius: var(--radius-full);
  transition: all 0.35s var(--ease-smooth);
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--color-accent-violet);
  color: white;
  box-shadow: 0 4px 20px rgba(167, 139, 250, 0.3);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(167, 139, 250, 0.4);
}

.btn-outline-light {
  background: transparent;
  border: 1.5px solid rgba(26,26,46,0.25);
  color: rgba(26,26,46,0.7);
  padding: 0.6rem 1.2rem;
  font-size: var(--text-small);
  font-weight: 600;
  border-radius: var(--radius-full);
}
.btn-outline-light:hover {
  background: rgba(26,26,46,0.05);
  border-color: rgba(26,26,46,0.5);
}

/* Pulse ring for live indicator */
.pulse-dot {
  width: 8px;
  height: 8px;
  background: #22C55E;
  border-radius: 50%;
  position: relative;
  display: inline-block;
}
.pulse-dot::after {
  content: '';
  position: absolute;
  inset: -3px;
  border-radius: 50%;
  background: #22C55E;
  opacity: 0.4;
  animation: pulseRing 2s ease-out infinite;
}
@keyframes pulseRing {
  0% { transform: scale(1); opacity: 0.6; }
  100% { transform: scale(2.5); opacity: 0; }
}

/* ============================================================
   SECTION 1: EDUCATION (Light)
   ============================================================ */
.education-section {
  background: linear-gradient(180deg, #F8F7FC 0%, #FFFFFF 100%);
  position: relative;
  overflow: hidden;
  padding-top: calc(var(--section-padding) + 6rem);
}

.education-section::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(240, 230, 250, 0.5) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.education-grid {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  max-width: 1200px;
}

.education-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: #F5F0FF;
  border-radius: var(--radius-full);
  font-size: var(--text-small);
  font-weight: 600;
  color: var(--color-accent-violet);
  margin-bottom: 1.5rem;
}

.education-section-title {
  font-family: var(--font-display);
  font-size: var(--text-h2);
  color: var(--color-neutral-darkest);
  letter-spacing: 0.03em;
  margin-bottom: 2rem;
}

.education-school-row {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  margin-bottom: 0.75rem;
}

.education-school-item {
  font-family: var(--font-display);
  font-size: var(--text-h4);
  color: var(--color-neutral-darkest);
  letter-spacing: 0.02em;
  margin: 0;
}

.school-icons-stack {
  display: flex;
  gap: 0.5rem;
  flex-shrink: 0;
  background: #F5F2FA;
  padding: 0.6rem 0.75rem;
  border-radius: var(--radius-lg);
  align-items: center;
}

.school-icon {
  height: 3.2rem;
  width: 3.2rem;
  object-fit: contain;
  border-radius: 8px;
  flex-shrink: 0;
}

.education-major {
  font-family: var(--font-heading);
  font-size: var(--text-large);
  font-weight: 600;
  color: var(--color-neutral-darkest);
  margin-top: 1.25rem;
  margin-bottom: 1rem;
  line-height: 2;
}

.education-details {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.education-stat {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.education-stat-value {
  font-family: var(--font-heading);
  font-size: var(--text-h4);
  font-weight: 700;
  color: var(--color-accent-violet);
}

.education-stat-label {
  font-size: var(--text-caption);
  color: var(--color-neutral);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.education-courses {
  font-size: var(--text-regular);
  color: var(--color-neutral);
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

.education-courses strong {
  display: inline-block;
  margin-bottom: 0.35rem;
  color: var(--color-accent-violet);
  font-weight: 600;
}

.education-tech-tags {
  margin-bottom: 1.5rem;
}

.education-contact {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.contact-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 1rem;
  font-size: var(--text-caption);
  font-weight: 500;
  border-radius: var(--radius-full);
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid rgba(0,0,0,0.06);
  transition: all 0.3s var(--ease-smooth);
}
.contact-chip:hover {
  background: white;
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.contact-chip svg {
  width: 16px;
  height: 16px;
  color: var(--color-accent-violet);
}

/* ============================================================
   SECTION 2: MY BACKGROUND
   ============================================================ */
.background-section {
  background: var(--color-white);
  position: relative;
}

.background-header {
  text-align: center;
  margin-bottom: 4rem;
}

.background-header h2 {
  font-family: var(--font-display);
  font-size: var(--text-h2);
  color: var(--color-neutral-darkest);
  letter-spacing: 0.03em;
  margin-bottom: 1rem;
}

.background-header p {
  color: var(--color-neutral);
  width: fit-content;
  margin: 0 auto;
  font-size: var(--text-medium);
  white-space: nowrap;
}

/* Skill Bento Grid */
.skills-grid {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

/* Hero bento — full-width top row */
.skill-bento-hero {
  width: 100%;
  background: linear-gradient(135deg, #FDF2F8 0%, #F5F0FF 50%, #EEF4FF 100%) !important;
  border: 1px solid rgba(167, 139, 250, 0.12);
  border-radius: var(--radius-lg);
  padding: 2rem 2.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.skill-bento-hero-inner {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.skill-bento-hero .skill-bento-icon {
  font-size: 3rem;
  margin: 0;
}

.skill-bento-hero .skill-bento-title {
  font-size: var(--text-h4);
  margin-bottom: 0.25rem;
}

.skill-bento-hero .tech-tags {
  margin: 0;
}

/* Row of 4 smaller bentos */
.skills-grid-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.skill-bento {
  background: #F8F7FC;
  border: 1px solid rgba(0,0,0,0.04);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  transition: all 0.4s var(--ease-smooth);
  position: relative;
  overflow: hidden;
}

.skill-bento:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  background: white;
}

.skill-bento-icon {
  font-size: 2.5rem;
  margin-bottom: 0.75rem;
}

.skill-bento-label {
  font-family: var(--font-mono);
  font-size: var(--text-caption);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-neutral);
  margin-bottom: 0.5rem;
}

.skill-bento-title {
  font-family: var(--font-heading);
  font-size: var(--text-h4);
  font-weight: 700;
  color: var(--color-neutral-darkest);
  margin-bottom: 0.5rem;
}

.skill-bento-desc {
  font-size: var(--text-regular);
  color: var(--color-neutral);
  line-height: 1.6;
}

/* Tech Tags */
.tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.75rem;
}

.tech-tag {
  padding: 0.35rem 0.85rem;
  font-size: 0.85rem;
  font-weight: 500;
  border-radius: var(--radius-full);
  background: white;
  border: 1px solid rgba(0,0,0,0.06);
  color: var(--color-neutral);
  transition: all 0.3s;
}

.tech-tag.accent {
  background: #F5F0FF;
  color: var(--color-accent-violet);
  border-color: transparent;
  font-weight: 600;
}

.tech-tag.subtle {
  background: #F9F7FC;
  color: #B0A8C0;
  border-color: transparent;
}

/* Language Cards */
.lang-cards {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.lang-card {
  flex: 1;
  min-width: 120px;
  background: white;
  border: 1px solid rgba(0,0,0,0.06);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  text-align: center;
  transition: all 0.3s;
}

.lang-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.lang-flag {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
}

.lang-name {
  font-weight: 600;
  font-size: var(--text-regular);
  color: var(--color-neutral-darkest);
  margin-bottom: 0.25rem;
}

.lang-level {
  font-size: var(--text-small);
  color: var(--color-neutral);
}

/* ============================================================
   SECTION 3: WORK EXPERIENCE (Dark)
   ============================================================ */
.work-section {
  background: var(--color-dark-bg);
  color: #FFFFFF;
  position: relative;
  overflow: hidden;
}

.work-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 200px;
  background: linear-gradient(180deg, rgba(255,255,255,0.03) 0%, transparent 100%);
  pointer-events: none;
}

.work-section::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 200px;
  background: linear-gradient(0deg, rgba(167, 139, 250, 0.03) 0%, transparent 100%);
  pointer-events: none;
}

.work-section .section-label {
  color: var(--color-accent-purple);
}

.work-header {
  margin-bottom: 4rem;
}

.work-header h2 {
  font-family: var(--font-display);
  font-size: var(--text-h2);
  color: #FFFFFF;
  letter-spacing: 0.03em;
  margin-bottom: 1rem;
}

.work-header p {
  color: var(--opacity-white-60);
  font-size: var(--text-medium);
  white-space: nowrap;
}

/* Work Experience Card */
.work-card {
  background: var(--color-dark-card);
  border: 1px solid var(--color-dark-border);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  position: relative;
  overflow: hidden;
  margin-bottom: 2rem;
  transition: all 0.4s var(--ease-smooth);
}

/* GeeLark card — solid light purple, no top accent line */
.work-card-geelark {
  background: #F3EFFF;
  border: 1px solid rgba(167, 139, 250, 0.15);
}

.work-card-geelark::before {
  display: none;
}

.work-card-geelark .work-company {
  color: #1A1A2E;
}

.work-card-geelark .work-role {
  color: rgba(26, 26, 46, 0.65);
}

.work-card-geelark .work-meta {
  color: rgba(26, 26, 46, 0.55);
}

.work-card-geelark .work-live-badge {
  background: rgba(34, 197, 94, 0.08);
  border-color: rgba(34, 197, 94, 0.15);
}

.work-card-geelark .work-achievements {
  background: rgba(255, 255, 255, 0.5);
}

.work-card-geelark .work-achievement-list li {
  color: rgba(26, 26, 46, 0.75);
}

.work-card-geelark .kpi-card {
  background: rgba(255, 255, 255, 0.5);
}

/* GeeLark card KPI — gradient text on black card bg */
.work-card-geelark .kpi-value {
  background: linear-gradient(135deg, var(--color-accent-purple), var(--color-accent-rose));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.work-card-geelark .kpi-card {
  background: #1A1A24;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.work-card-geelark .kpi-label {
  color: rgba(255, 255, 255, 0.4);
}

.work-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg,
    var(--color-accent-purple) 0%,
    var(--color-accent-rose) 50%,
    var(--color-accent-blue) 100%
  );
  opacity: 0.6;
}

.work-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2rem;
}

.work-company {
  font-family: var(--font-heading);
  font-size: var(--text-h4);
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 0.5rem;
}

.work-role {
  font-size: var(--text-medium);
  color: var(--opacity-white-60);
  margin-bottom: 0.25rem;
}

.work-meta {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  font-size: var(--text-regular);
  color: var(--opacity-white-60);
}

.work-meta span {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.work-live-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  background: rgba(34, 197, 94, 0.1);
  border: 1px solid rgba(34, 197, 94, 0.2);
  border-radius: var(--radius-full);
  font-size: var(--text-small);
  font-weight: 600;
  color: #22C55E;
}

.work-achievements {
  background: var(--color-dark-card2);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

.work-achievement-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.work-achievement-list li {
  font-size: var(--text-regular);
  color: var(--opacity-white-60);
  padding-left: 1.75rem;
  position: relative;
  line-height: 1.6;
}

.work-achievement-list li::before {
  content: '▸';
  position: absolute;
  left: 0;
  top: -0.02rem;
  color: var(--color-accent-purple);
  font-size: 1.2em;
  font-weight: 700;
}

/* KPI Stats */
.work-kpis {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.kpi-card {
  background: var(--color-dark-card3);
  border: 1px solid var(--color-dark-border);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  text-align: center;
}

.kpi-value {
  font-family: var(--font-heading);
  font-size: var(--text-h3);
  font-weight: 700;
  background: linear-gradient(135deg, var(--color-accent-purple), var(--color-accent-rose));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.kpi-label {
  font-size: var(--text-small);
  color: var(--opacity-white-40);
  margin-top: 0.25rem;
}

/* Dify Dashboard Embed Panel */
.dify-embed-panel {
  display: none;
  background: rgba(0,0,0,0.03);
  border: 1px solid rgba(0,0,0,0.1);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-top: 1.5rem;
}

.dify-embed-panel.open {
  display: block;
  animation: slideDown 0.4s var(--ease-smooth);
}

.dify-zoom-btn {
  padding: 0.35rem 0.75rem;
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  color: var(--opacity-white-50);
  border: 1px solid var(--opacity-white-15);
  cursor: pointer;
  transition: all 0.3s;
}

/* Default light-section button */
.dify-zoom-btn {
  background: rgba(0,0,0,0.05);
  color: rgba(26,26,46,0.6);
  border: 1px solid rgba(0,0,0,0.12);
}

.dify-zoom-btn:hover {
  background: rgba(0,0,0,0.1);
  color: #1A1A2E;
}

.dify-embed-body {
  position: relative;
  width: 100%;
  background: #fff;
}

.dify-preview-img {
  cursor: zoom-in;
  transition: opacity 0.2s ease;
}

.dify-preview-img:hover {
  opacity: 0.9;
}

.dify-embed-body.fullscreen {
  position: fixed;
  inset: 0;
  z-index: 9999;
  height: 100vh;
  background: rgba(0,0,0,0.95);
}

.dify-embed-body iframe {
  width: 100%;
  height: 100%;
  border: none;
}

/* ============================================================
   SECTION 4: MY PROJECTS (Card Stack — vertical scroll)
   ============================================================ */
.projects-section {
  background: linear-gradient(180deg, var(--color-dark-bg) 0%, #1A1A24 50%, #F8F7FC 100%);
  position: relative;
  padding-bottom: calc(var(--section-padding) * 1.5);
}

.projects-header {
  margin-bottom: 4rem;
  padding-top: 2rem;
}

.projects-header .section-label {
  color: var(--color-accent-purple);
}

.projects-header h2 {
  font-family: var(--font-display);
  font-size: var(--text-h2);
  color: #FFFFFF;
  letter-spacing: 0.03em;
  margin-bottom: 1rem;
}

.projects-header p {
  color: var(--opacity-white-60);
  font-size: var(--text-medium);
  white-space: nowrap;
}

/* Card Stack — desktop-optimized, vertical flow, generous spacing */
.card-stack {
  position: relative;
  max-width: 100%;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 6rem;
  padding-bottom: 12rem;
}

/* Each project card */
.project-card {
  border-radius: var(--radius-xl);
  padding: 4rem 5rem;
  transition: all 0.4s var(--ease-smooth);
  box-shadow: var(--shadow-lg);
  overflow: visible;
  position: static;
}

/* Cards stack from bottom-up: PSEO on bottom, Innovation on top */
.project-card.card-pseo       { }
.project-card.card-face       { }
.project-card.card-spotify    { }
.project-card.card-innovation { }

/* Card color variants */
.project-card.card-pseo {
  background: #EFE8FD;
  color: #1A1A2E;
  border: 1px solid rgba(139, 120, 210, 0.15);
}

.card-pseo .project-card-title {
  white-space: nowrap;
}

.project-card.card-face {
  background: #FDE8F0;
  color: #1A1A2E;
  border: 1px solid rgba(230, 160, 180, 0.15);
}

.project-card.card-spotify {
  background: #E8FDF0;
  color: #1A1A2E;
  border: 1px solid rgba(150, 220, 170, 0.15);
}

.project-card.card-innovation {
  background: #E8F0FD;
  color: #1A1A2E;
  border: 1px solid rgba(140, 180, 230, 0.15);
}

.project-card:hover {
  box-shadow: 0 24px 80px rgba(0,0,0,0.2);
}

/* Card top accent line — removed */
.project-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 0;
}

.project-card-date {
  font-family: var(--font-mono);
  font-size: var(--text-small);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
  opacity: 0.65;
}

.project-card-title {
  font-family: var(--font-heading);
  font-size: var(--text-h3);
  font-weight: 700;
  margin-bottom: 1.5rem;
  line-height: 1.2;
}

.project-card-body {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 3.5rem;
}

.project-card-desc {
  font-size: var(--text-regular);
  line-height: 1.7;
  color: rgba(26,26,46,0.8);
}

.project-card-desc p {
  font-size: var(--text-regular);
  margin-bottom: 0.75rem;
}

.project-card-desc ul {
  list-style: none;
  padding: 0;
}

.project-card-desc li {
  padding-left: 1.65rem;
  position: relative;
  margin-bottom: 0.5rem;
  font-size: var(--text-regular);
}

.project-card-desc li::before {
  content: '';
  position: absolute;
  left: 0.1rem;
  top: 0.55rem;
  width: 0.7rem;
  height: 0.7rem;
  border-radius: 3px;
  background: var(--color-accent-violet);
  transform: rotate(45deg);
  box-shadow:
    0 0 0 4px rgba(167, 139, 250, 0.12),
    0 4px 10px rgba(167, 139, 250, 0.18);
}

.card-pseo .project-card-desc li::before {
  content: '</>';
  left: 0;
  top: 0.26rem;
  width: 1.45rem;
  height: 1.45rem;
  border-radius: 8px;
  background: rgba(167, 139, 250, 0.13);
  color: #7C5CE1;
  transform: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 800;
  letter-spacing: -0.08em;
  box-shadow:
    inset 0 0 0 1px rgba(167, 139, 250, 0.18),
    0 4px 12px rgba(167, 139, 250, 0.12);
}

.card-face .project-card-desc li::before {
  content: '';
  left: 0.18rem;
  top: 0.52rem;
  width: 0.8rem;
  height: 0.8rem;
  border-radius: 999px;
  background: #F472B6;
  transform: none;
  box-shadow:
    0 0 0 4px rgba(244, 114, 182, 0.14),
    0 4px 10px rgba(244, 114, 182, 0.16);
}

.card-spotify .project-card-desc li::before {
  background: #34D399;
  box-shadow:
    0 0 0 4px rgba(52, 211, 153, 0.12),
    0 4px 10px rgba(52, 211, 153, 0.18);
}

.card-innovation .project-card-desc li::before {
  content: '✓';
  left: 0.15rem;
  top: 0.34rem;
  width: 1.25rem;
  height: 1.25rem;
  border-radius: 0;
  background: transparent;
  color: #2B6CB0;
  transform: none;
  font-size: 1.08rem;
  font-weight: 900;
  line-height: 1;
  box-shadow: none;
}

.project-card-desc li strong {
  color: #1A1A2E;
}

.project-card-highlights {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
}

.project-tech-tag {
  padding: 0.35rem 0.85rem;
  font-size: 0.85rem;
  font-weight: 600;
  font-family: var(--font-mono);
  letter-spacing: 0.03em;
  border-radius: var(--radius-full);
  background: rgba(0,0,0,0.05);
  border: 1px solid rgba(0,0,0,0.08);
  color: rgba(26,26,46,0.7);
}

/* Project card CTA */
.project-card-cta {
  margin-top: 1.5rem;
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

/* Code Preview Panel — VS Code Dark+ theme */
.code-preview-panel {
  display: none;
  background: #1E1E1E;
  border: 1px solid #333;
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-top: 1.5rem;
}

.code-preview-panel.open {
  display: block;
  animation: slideDown 0.4s var(--ease-smooth);
}

.code-preview-panel .code-preview-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.5rem 0.9rem;
  background: #252526;
  border-bottom: 1px solid #333;
}

.code-preview-panel .code-preview-tabs {
  display: flex;
  gap: 0;
}

.code-preview-panel .code-preview-tab {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: #8B8B8B;
  cursor: pointer;
  padding: 0.3rem 0.8rem;
  border-bottom: 2px solid transparent;
  transition: all 0.2s;
  background: transparent;
}

.code-preview-panel .code-preview-tab.active {
  color: #FFFFFF;
  border-bottom-color: var(--color-accent-violet);
}

.code-preview-panel .code-preview-tab:hover {
  color: #CCC;
}

.code-preview-panel .code-preview-close {
  color: #8B8B8B;
  font-size: 1.1rem;
  cursor: pointer;
  transition: color 0.2s;
}
.code-preview-panel .code-preview-close:hover { color: #FFF; }

/* Code content — VS Code Dark+ editor background */
.code-preview-content {
  padding: 1rem 1.25rem;
  max-height: 500px;
  overflow-y: auto;
  font-family: 'Consolas', 'Courier New', 'Fira Code', monospace;
  font-size: 0.84rem;
  line-height: 1.65;
  color: #D4D4D4;
  white-space: pre-wrap;
  word-break: break-all;
  background: #1E1E1E;
}

/* VS Code scrollbar */
.code-preview-content::-webkit-scrollbar { width: 10px; }
.code-preview-content::-webkit-scrollbar-track { background: #1E1E1E; }
.code-preview-content::-webkit-scrollbar-thumb { background: #424242; border-radius: 5px; }
.code-preview-content::-webkit-scrollbar-thumb:hover { background: #555; }

/* --- Syntax Highlighting (VS Code Dark+ theme) --- */
/* storage.type — def, class, as, lambda, yield */
.py-storage     { color: #569CD6; }
/* keyword.control — import, from, return, if, else, for, while, try, except, raise, with, etc. */
.py-control     { color: #C586C0; }
/* keyword — True, False, None, in, not, and, or, is */
.py-keyword     { color: #569CD6; }
/* string */
.py-string      { color: #CE9178; }
/* comment */
.py-comment     { color: #6A9955; font-style: italic; }
/* numeric */
.py-number      { color: #B5CEA8; }
/* support.function — built-in functions */
.py-builtin     { color: #DCDCAA; }
/* entity.name.type — class name after "class" */
.py-classname   { color: #4EC9B0; }
/* variable.language — self */
.py-self        { color: #569CD6; }
/* decorator */
.py-decorator   { color: #DCDCAA; }
/* loading placeholder */
.code-loading   { color: #8B8B8B; font-style: normal; }

/* ============================================================
   NOTEBOOK RENDERER — VS Code dark theme
   ============================================================ */
/* When .code-preview-content contains notebook HTML, apply these overrides.
   We use a parent selector class added by JS to avoid breaking .py files. */
.code-preview-content.notebook-mode {
  padding: 0.5rem 0;
  max-height: 600px;
  overflow-y: auto;
  background: #1E1E1E;
  color: #D4D4D4;
  font-family: 'Consolas', 'Cascadia Code', 'Fira Code', monospace;
  font-size: 0.82rem;
  line-height: 1.55;
  white-space: normal;
  word-break: normal;
}

/* ── Notebook cell ── */
.nb-cell {
  border-bottom: 1px solid #2D2D2D;
  padding-left: 1rem;
  padding-right: 1rem;
}

/* ── Markdown cell ── */
.nb-cell.nb-md {
  background: #1E1E1E;
  padding: 0.75rem 1.5rem;
  font-family: var(--font-body);
  color: #CCCCCC;
  line-height: 1.6;
}
.nb-md-h2 { font-size: 1.35rem; font-weight: 700; color: #E0E0E0; margin: 0.5rem 0 0.25rem; }
.nb-md-h3 { font-size: 1.15rem; font-weight: 600; color: #D0D0D0; margin: 0.4rem 0 0.2rem; }
.nb-md-h4 { font-size: 1.0rem;  font-weight: 600; color: #C0C0C0; margin: 0.35rem 0 0.15rem; }
.nb-md-line { display: block; }
.nb-inline-code {
  font-family: 'Consolas', monospace;
  font-size: 0.8rem;
  background: #2D2D2D;
  color: #CE9178;
  padding: 0.1em 0.35em;
  border-radius: 3px;
}

/* ── Code cell ── */
.nb-code-cell {
  background: #1E1E1E;
}

/* Input area */
.nb-input {
  display: flex;
  gap: 0;
  background: #1E1E1E;
  padding-top: 0.15rem;
  padding-bottom: 0.15rem;
}
.nb-prompt {
  flex-shrink: 0;
  width: 100px;
  min-width: 100px;
  padding: 0.35rem 1.2rem 0 0.8rem;
  text-align: right;
  font-family: 'Consolas', monospace;
  font-size: 0.78rem;
  color: #6A9955;
  user-select: none;
  -webkit-user-select: none;
  white-space: nowrap;
}
.nb-code-wrapper {
  flex: 1;
  min-width: 0;
  overflow-x: auto;
}
.nb-code-pre {
  margin: 0;
  padding: 0.35rem 0;
  white-space: pre;
  tab-size: 4;
}
.nb-code {
  display: inline-block;
  min-width: 100%;
  font-family: 'Consolas', 'Cascadia Code', 'Fira Code', monospace;
  font-size: 0.82rem;
  line-height: 1.55;
  color: #D4D4D4;
}

/* ── Outputs area ── */
.nb-outputs {
  background: #1E1E1E;
  padding-bottom: 0.5rem;
}

/* Out[] prompt — red-ish for output */
.nb-out-prompt {
  color: #C586C0 !important;
}

/* Stream (stdout / stderr) output */
.nb-output-stream {
  display: flex;
  gap: 0;
}
.nb-stream-pre {
  flex: 1;
  min-width: 0;
  margin: 0;
  padding: 0.25rem 0;
  font-family: 'Consolas', monospace;
  font-size: 0.82rem;
  line-height: 1.5;
  color: #CCCCCC;
  white-space: pre-wrap;
  word-break: break-word;
  background: transparent;
}

/* Execute result / display_data output */
.nb-output-result {
  display: flex;
  gap: 0;
}
.nb-out-content {
  flex: 1;
  min-width: 0;
  padding: 0.25rem 0;
}

/* Embedded images */
.nb-out-img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 0.25rem 0;
  border-radius: 4px;
  cursor: zoom-in;
}
.nb-out-img:hover {
  opacity: 0.92;
}

/* DataFrame dark table */
.nb-df-wrapper {
  overflow-x: auto;
  margin: 0.25rem 0;
}
.nb-df-table {
  border-collapse: collapse;
  font-family: 'Consolas', 'Cascadia Code', monospace;
  font-size: 0.78rem;
  color: #D4D4D4;
  background: #252526;
  border: 1px solid #3E3E3E;
}
.nb-df-table thead th {
  background: #2D2D2D;
  color: #569CD6;
  font-weight: 600;
  padding: 0.35rem 0.65rem;
  border: 1px solid #3E3E3E;
  text-align: right;
  white-space: nowrap;
}
.nb-df-table tbody th {
  background: #252526;
  color: #808080;
  font-weight: 400;
  padding: 0.3rem 0.6rem;
  border: 1px solid #3E3E3E;
  text-align: right;
  white-space: nowrap;
}
.nb-df-table tbody td {
  padding: 0.3rem 0.6rem;
  border: 1px solid #3E3E3E;
  text-align: right;
  white-space: nowrap;
}
.nb-df-table tbody tr:hover {
  background: #2A2D2E;
}

/* Error output */
.nb-output-error {
  display: flex;
  gap: 0;
}
.nb-err-pre {
  flex: 1;
  min-width: 0;
  margin: 0;
  padding: 0.25rem 0;
  font-family: 'Consolas', monospace;
  font-size: 0.82rem;
  line-height: 1.5;
  color: #F44747;
  white-space: pre-wrap;
  word-break: break-word;
  background: transparent;
}

/* ============================================================
   Notebook Syntax Highlighting (VS Code Dark+ theme)
   ============================================================ */
.nb-s-storage   { color: #569CD6; }  /* def, class, lambda */
.nb-s-control   { color: #C586C0; }  /* import, return, if, for... */
.nb-s-keyword   { color: #569CD6; }  /* True, False, None, in, not... */
.nb-s-string    { color: #CE9178; }  /* "string", 'string' */
.nb-s-comment   { color: #6A9955; font-style: italic; }
.nb-s-number    { color: #B5CEA8; }
.nb-s-builtin   { color: #DCDCAA; }  /* print, range, pd, np... */
.nb-s-classname { color: #4EC9B0; }  /* ClassName after "class" */
.nb-s-self      { color: #569CD6; }
.nb-s-decorator { color: #DCDCAA; }

/* ============================================================
   Dify / PPT panels keep original light header styles
   ============================================================ */
.dify-embed-panel .code-preview-header,
.ppt-embed-panel .code-preview-header {
  display: flex; justify-content: space-between; align-items: center;
  padding: 0.75rem 1.25rem; background: rgba(0,0,0,0.06);
  border-bottom: 1px solid rgba(0,0,0,0.06);
}
.dify-embed-panel .code-preview-close,
.ppt-embed-panel .code-preview-close {
  color: rgba(26,26,46,0.45); font-size: 1.3rem; cursor: pointer; transition: color 0.3s;
}
.dify-embed-panel .code-preview-close:hover,
.ppt-embed-panel .code-preview-close:hover { color: #1A1A2E; }

/* PPT Embed Panel */
.ppt-embed-panel {
  display: none;
  background: rgba(0,0,0,0.03);
  border: 1px solid rgba(0,0,0,0.1);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-top: 1.5rem;
}

.ppt-embed-panel.open {
  display: block;
  animation: slideDown 0.4s var(--ease-smooth);
}

.ppt-embed-body {
  position: relative;
  width: 100%;
  background: #f5f5f5;
}

.ppt-embed-body.fullscreen {
  position: fixed;
  inset: 0;
  z-index: 9999;
  height: 100vh;
  background: rgba(0,0,0,0.95);
}

.ppt-embed-body iframe {
  width: 100%;
  height: 100%;
  border: none;
}

/* Slide Viewer */
.slide-viewer {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #fff;
  position: relative;
  padding: 1rem 3rem;
}

.slide-image-wrapper {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.slide-image {
  width: 100%;
  height: auto;
  display: block;
  image-rendering: auto;
  user-select: none;
  -webkit-user-drag: none;
}

/* Counter + dots — bottom bar */
.slide-bottom-bar {
  position: absolute;
  bottom: 0.6rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.3rem;
  z-index: 10;
}

.slide-counter {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  color: rgba(26,26,46,0.45);
  text-align: center;
}

.slide-dots {
  display: flex;
  gap: 0.3rem;
  flex-wrap: wrap;
  justify-content: center;
  max-width: 100%;
}

.slide-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: rgba(0,0,0,0.12);
  cursor: pointer;
  transition: all 0.3s ease;
  border: none;
  padding: 0;
  display: inline-block;
  flex-shrink: 0;
}

.slide-dot.active {
  background: #8CB4E6;
  transform: scale(1.5);
}

.slide-dot:hover {
  background: rgba(140, 180, 230, 0.6);
}

/* Nav buttons — floating left/right */
.slide-nav-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid rgba(0,0,0,0.1);
  background: rgba(255,255,255,0.85);
  font-size: 1.5rem;
  color: rgba(26,26,46,0.55);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.25s ease;
  font-family: var(--font-mono);
  line-height: 1;
  padding: 0;
  z-index: 10;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

#slidePrev { left: 0.6rem; }
#slideNext { right: 0.6rem; }

.slide-nav-btn:hover {
  background: #8CB4E6;
  color: white;
  border-color: #8CB4E6;
  box-shadow: 0 4px 16px rgba(140, 180, 230, 0.3);
}

/* Fullscreen slide viewer */
.ppt-embed-body.fullscreen .slide-viewer {
  background: rgba(0,0,0,0.95);
}

.ppt-embed-body.fullscreen .slide-nav-btn {
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.15);
  color: rgba(255,255,255,0.7);
}

.ppt-embed-body.fullscreen .slide-nav-btn:hover {
  background: #8CB4E6;
  color: white;
}

.ppt-embed-body.fullscreen .slide-counter {
  color: rgba(255,255,255,0.5);
}

.ppt-embed-body.fullscreen .slide-dot {
  background: rgba(255,255,255,0.15);
}

.ppt-embed-body.fullscreen .slide-dot.active {
  background: #8CB4E6;
}

/* Score badge */
.score-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.9rem;
  background: rgba(0,0,0,0.05);
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
  font-size: var(--text-small);
  font-weight: 600;
  color: rgba(26,26,46,0.85);
}

.score-badge .score {
  color: var(--color-accent-violet);
  font-weight: 700;
}

/* ============================================================
   SECTION 5: CAMPUS EXPERIENCE (Light Section)
   ============================================================ */
.campus-section {
  background: linear-gradient(180deg, #FFFFFF 0%, #F8F7FC 100%);
  position: relative;
  overflow: hidden;
}

.campus-section::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 400px;
  background: radial-gradient(ellipse, rgba(240, 230, 250, 0.4) 0%, transparent 70%);
  pointer-events: none;
}

.campus-header {
  text-align: center;
  margin-bottom: 4rem;
}

.campus-header h2 {
  font-family: var(--font-display);
  font-size: var(--text-h2);
  color: var(--color-neutral-darkest);
  letter-spacing: 0.03em;
  margin-bottom: 1rem;
}

.campus-header p {
  color: var(--color-neutral);
  font-size: var(--text-medium);
}

.campus-timeline {
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
}

/* Each event: 90px marker (dot + line) + 1fr card */
.campus-event {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 1.5rem;
  margin-bottom: 0;
  padding-bottom: 2.5rem;
}

.campus-event:last-child {
  padding-bottom: 0;
}

.campus-event-marker {
  display: flex;
  flex-direction: column;
  align-items: center;
  align-self: stretch;
}

.campus-event-dot {
  width: 16px;
  height: 16px;
  background: var(--color-accent-violet);
  border-radius: 50%;
  border: 3px solid white;
  box-shadow: 0 0 0 4px rgba(167, 139, 250, 0.15);
  flex-shrink: 0;
  margin-top: 0.5rem;
  z-index: 2;
}

.campus-event-line {
  width: 2px;
  background: linear-gradient(180deg, var(--color-accent-violet) 0%, var(--color-accent-purple) 60%, #EDE4F5 100%);
  border-radius: 1px;
  margin: 4px auto 0;
  flex: 1;
  min-height: 0;
}

.campus-timeline .campus-event:last-child .campus-event-line {
  min-height: 80px;
  flex: 1;
}

.campus-event-card {
  background: white;
  border: 1px solid rgba(0,0,0,0.04);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s var(--ease-smooth);
  margin-bottom: 0;
}

.campus-event-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateX(4px);
}

.campus-event-title {
  font-family: var(--font-heading);
  font-size: var(--text-h4);
  font-weight: 700;
  color: var(--color-neutral-darkest);
  margin-bottom: 0.5rem;
}

.campus-event-role {
  font-size: var(--text-regular);
  color: var(--color-accent-violet);
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.campus-event-desc {
  font-size: var(--text-regular);
  color: var(--color-neutral);
  line-height: 1.7;
  margin-bottom: 1rem;
}

.campus-event-highlights {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.campus-tag {
  padding: 0.35rem 0.85rem;
  font-size: 0.85rem;
  font-weight: 500;
  border-radius: var(--radius-full);
  background: #F5F0FF;
  color: var(--color-accent-violet);
}

.campus-tag.gold {
  background: #FFF7ED;
  color: #9A3412;
  font-weight: 600;
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: linear-gradient(135deg, #F5E8F0 0%, #EDE4FA 50%, #E2ECFB 100%);
  color: var(--color-neutral-darkest);
  padding: 3rem 0;
  text-align: center;
  border-top: 1px solid rgba(167, 139, 250, 0.12);
}

.footer-name {
  font-family: var(--font-script);
  font-size: 2.5rem;
  color: var(--color-neutral-darkest);
  margin-bottom: 0.5rem;
  margin-top: 2rem;
}

.footer-tagline {
  font-family: var(--font-script);
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  font-weight: 400;
  color: var(--color-accent-violet);
  margin-bottom: 1.5rem;
  line-height: 1.15;
}

.footer-links {
  display: flex;
  gap: 2rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.footer .contact-chip {
  padding: 0.55rem 1.2rem;
  font-size: var(--text-regular);
  font-weight: 600;
}

/* ============================================================
   BACK TO TOP
   ============================================================ */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 100;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-accent-violet);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(167, 139, 250, 0.4);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all 0.4s var(--ease-smooth);
  cursor: pointer;
  border: none;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(167, 139, 250, 0.5);
}

/* ============================================================
   ANIMATIONS
   ============================================================ */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s var(--ease-out-expo), transform 0.8s var(--ease-out-expo);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 991px) {
  .hide-tablet { display: none !important; }

  .skills-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .work-kpis {
    grid-template-columns: repeat(2, 1fr);
  }

  .project-card-body {
    position: static;
  }

  .card-stack {
    max-width: 100%;
  }

  .hero-name_wrapper {
    padding-right: 2rem;
  }

  .container-large {
    padding: 0 1.5rem;
  }

  .container {
    max-width: 100%;
    padding: 0 2rem;
  }
}

@media (max-width: 767px) {
  .hide-mobile-landscape { display: none !important; }

  /* Nav: shrink for tablet/mobile */
  nav.navbar_wrapper.visible { top: 0.6rem; }
  .nav-buttons { gap: 0.1rem; padding: 0.3rem 0.55rem; }
  .nav-item { padding: 0.35rem 0.7rem; font-size: 0.78rem; }

  .container-large {
    padding: 0 1rem;
  }

  .skills-grid {
    grid-template-columns: 1fr;
  }

  .skill-bento-hero {
    flex-direction: column;
    align-items: flex-start;
  }

  .work-kpis {
    grid-template-columns: 1fr;
  }

  .work-card {
    padding: 1.5rem;
  }

  .project-card {
    padding: 1.5rem;
    position: static;
  }

  .campus-event {
    grid-template-columns: 1fr;
    gap: 0.5rem;
  }

  .campus-event-marker {
    flex-direction: row;
    align-items: center;
    padding-top: 0;
    height: auto;
    gap: 0.75rem;
  }

  .campus-event-line {
    display: none;
  }

  .education-details {
    flex-direction: column;
    gap: 1rem;
  }

  .dify-embed-body {
    height: 350px;
  }

  .ppt-embed-body {
    height: 350px;
  }

  .hero-name {
    font-size: clamp(2.5rem, 6vw, 5rem) !important;
  }

  .hero-tagline {
    max-width: 100% !important;
    width: 100% !important;
  }
}

@media (max-width: 479px) {
  .hide-mobile { display: none !important; }

  /* Nav: further shrink */
  .nav-item { padding: 0.3rem 0.5rem; font-size: 0.65rem; }
  nav.navbar_wrapper.visible { max-width: 99vw; }

  .hero-name {
    font-size: clamp(2rem, 10vw, 3rem) !important;
  }

  .education-contact {
    flex-direction: column;
  }

  .hero-name_wrapper {
    align-items: center;
    text-align: center;
    margin: 0 auto;
    padding-right: 0;
  }

  .hero-tagline {
    text-align: center !important;
    margin: 1rem auto 0;
  }

  .hero-tagline .text-size-regular {
    text-align: center !important;
  }
}

/* ============================================================
   IMAGE LIGHTBOX — click to zoom, scroll to scale, ESC/btn close
   ============================================================ */
.lightbox-overlay {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(0, 0, 0, 0.92);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
  cursor: default;
}

.lightbox-overlay.open {
  opacity: 1;
  visibility: visible;
}

.lightbox-image {
  max-width: 90vw;
  max-height: 90vh;
  object-fit: contain;
  image-rendering: auto;
  transform: scale(1);
  transform-origin: center center;
  transition: none;
  cursor: grab;
  user-select: none;
  -webkit-user-drag: none;
}

.lightbox-image:active {
  cursor: grabbing;
}

/* Close button — purple circle with white X, top-right */
.lightbox-close {
  position: fixed;
  top: 1.5rem;
  right: 1.5rem;
  z-index: 10001;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--color-accent-violet);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFFFFF;
  transition: all 0.3s ease;
  box-shadow: 0 4px 20px rgba(167, 139, 250, 0.4);
}

.lightbox-close:hover {
  background: #C4B5FD;
  transform: scale(1.1);
  box-shadow: 0 6px 28px rgba(167, 139, 250, 0.6);
}

.lightbox-close svg {
  width: 26px;
  height: 26px;
}

/* Inline project link — clickable cross-reference */
.inline-project-link {
  position: relative;
  background: linear-gradient(180deg, rgba(167, 139, 250, 0.22) 0%, rgba(167, 139, 250, 0.14) 100%);
  box-shadow: 0 0 0 3px rgba(167, 139, 250, 0.12);
  border-radius: 6px;
  color: var(--color-accent-violet);
  padding: 0.1em 0.35em;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.35s var(--ease-smooth);
  white-space: nowrap;
}
.inline-project-link::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2.5px;
  border-radius: 1px;
  background: linear-gradient(90deg, var(--color-accent-purple), var(--color-accent-rose));
  opacity: 1;
}
.inline-project-link .link-arrow {
  display: inline-block;
  font-size: 0.85em;
  margin-left: 0.1em;
  opacity: 1;
  transform: translateX(0);
  color: var(--color-accent-violet);
  font-weight: 700;
  animation: arrowBounce 1.8s ease-in-out infinite;
}
.inline-project-link:hover {
  box-shadow: 0 0 0 6px rgba(167, 139, 250, 0.18);
}
.inline-project-link:hover .link-arrow {
  animation: none;
}
@keyframes arrowBounce {
  0%, 100% { transform: translateX(0); }
  50% { transform: translateX(3px); }
}