/* ============================================================
   DESIGN TOKENS
   ============================================================ */
:root {
  /* Core palette */
  --bg:           #0a0a0f;
  --surface:      #111118;
  --surface-2:    #1a1a26;
  --border:       rgba(255,255,255,0.07);
  --text:         #e2e8f0;
  --text-muted:   #8892a4;

  /* Accent – violet → cyan */
  --accent-1:     #6C63FF;
  --accent-2:     #00D4FF;
  --gradient:     linear-gradient(135deg, #6C63FF 0%, #00D4FF 100%);

  /* Glass */
  --glass:        rgba(255,255,255,0.04);
  --glass-hover:  rgba(255,255,255,0.08);
  --glass-border: rgba(255,255,255,0.08);
  --glass-shadow: 0 8px 32px rgba(0,0,0,0.45);

  /* Layout */
  --max-w:   1200px;
  --nav-h:   68px;
  --r-s:     6px;
  --r-m:     12px;
  --r-l:     18px;
  --r-xl:    24px;

  /* Spacing */
  --sp-1: 8px;
  --sp-2: 16px;
  --sp-3: 24px;
  --sp-4: 32px;
  --sp-5: 48px;
  --sp-6: 64px;

  /* Typography */
  --font-body:    'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-display: 'Syne', 'Inter', sans-serif;
  --h1: clamp(38px, 5.5vw, 64px);
  --h2: clamp(26px, 3.5vw, 40px);
  --h3: clamp(18px, 2vw, 24px);

  /* Motion */
  --ease:        cubic-bezier(0.4, 0, 0.2, 1);
  --ease-out:    cubic-bezier(0, 0, 0.2, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --t-fast: 150ms;
  --t-base: 300ms;
  --t-slow: 500ms;

  /* Legacy aliases used by old class names / existing JS */
  --accent-blue:      var(--accent-1);
  --accent-cyan:      var(--accent-2);
  --text-primary:     var(--text);
  --text-secondary:   var(--text-muted);
  --bg-start:         var(--bg);
  --bg-end:           var(--surface);
  --glass-bg:         var(--glass);
  --glass-bg-hover:   var(--glass-hover);
  --glass-blur:       20px;
  --border-radius:    var(--r-m);
  --border-radius-small: var(--r-s);
  --nav-height:       var(--nav-h);
  --max-width:        var(--max-w);
  --transition-fast:  var(--t-fast);
  --transition-base:  var(--t-base);
  --transition-slow:  var(--t-slow);
  --easing:           var(--ease);
  --space-xs:  var(--sp-1);
  --space-sm:  var(--sp-2);
  --space-md:  var(--sp-3);
  --space-lg:  var(--sp-4);
  --space-xl:  var(--sp-5);
  --font-family:        var(--font-body);
  --font-size-body:     16px;
  --font-size-body-lg:  18px;
  --font-size-h1:       var(--h1);
  --font-size-h2:       var(--h2);
  --font-size-h3:       var(--h3);
}

/* ============================================================
   LIGHT THEME
   ============================================================ */
body[data-theme="light"] {
  --bg:          #f4f4f8;
  --surface:     #ffffff;
  --surface-2:   #eeeef5;
  --border:      rgba(0,0,0,0.07);
  --text:        #0f0f1a;
  --text-muted:  #5a6070;
  --accent-1:    #5952e8;
  --accent-2:    #0099cc;
  --glass:       rgba(255,255,255,0.75);
  --glass-hover: rgba(255,255,255,0.92);
  --glass-border: rgba(0,0,0,0.08);
  --glass-shadow: 0 8px 32px rgba(0,0,0,0.1);

  --text-primary:   var(--text);
  --text-secondary: var(--text-muted);
  --bg-start:       var(--bg);
  --bg-end:         var(--surface);
  --glass-bg:       var(--glass);
  --glass-bg-hover: var(--glass-hover);
  --accent-blue:    var(--accent-1);
  --accent-cyan:    var(--accent-2);
}

/* ============================================================
   RESET
   ============================================================ */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--t-base) var(--ease);
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

:focus-visible {
  outline: 2px solid var(--accent-1);
  outline-offset: 4px;
  border-radius: var(--r-s);
}

/* ============================================================
   BASE
   ============================================================ */
body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  min-height: 100vh;
  min-width: 320px;
  overflow-x: hidden;
}

/* Ambient glow behind everything */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 90% 70% at 15% 15%, rgba(108,99,255,0.1) 0%, transparent 55%),
    radial-gradient(ellipse 70% 60% at 85% 80%, rgba(0,212,255,0.07) 0%, transparent 55%);
  pointer-events: none;
  z-index: 0;
}

body[data-theme="light"]::before {
  background:
    radial-gradient(ellipse 90% 70% at 15% 15%, rgba(89,82,232,0.07) 0%, transparent 55%),
    radial-gradient(ellipse 70% 60% at 85% 80%, rgba(0,153,204,0.05) 0%, transparent 55%);
}

/* ============================================================
   SCROLL PROGRESS BAR
   ============================================================ */
#progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: var(--gradient);
  z-index: 9999;
  transition: width 80ms linear;
}

/* ============================================================
   CUSTOM CURSOR (desktop only)
   ============================================================ */
.cursor-dot,
.cursor-ring {
  position: fixed;
  top: 0;
  left: 0;
  border-radius: 50%;
  pointer-events: none;
  z-index: 9998;
  transform: translate(-50%, -50%);
  opacity: 0;
  transition: opacity var(--t-base);
}

.cursor-dot {
  width: 6px;
  height: 6px;
  background: var(--accent-2);
}

.cursor-ring {
  width: 30px;
  height: 30px;
  border: 1.5px solid var(--accent-1);
  transition: width var(--t-base) var(--ease-spring),
              height var(--t-base) var(--ease-spring),
              border-color var(--t-base),
              opacity var(--t-base);
}

.cursor-ring.is-hovering {
  width: 50px;
  height: 50px;
  border-color: var(--accent-2);
}

@media (hover: none) {
  .cursor-dot,
  .cursor-ring { display: none; }
}

/* ============================================================
   SKIP LINK
   ============================================================ */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--accent-1);
  color: #fff;
  padding: var(--sp-2);
  z-index: 10000;
  font-weight: 600;
  border-radius: var(--r-s);
}

.skip-link:focus {
  top: var(--sp-2);
  outline: 2px solid var(--accent-2);
  outline-offset: 2px;
}

/* ============================================================
   NAVBAR
   ============================================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-h);
  background: transparent;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  border-bottom: 1px solid transparent;
  z-index: 1000;
  transition:
    background var(--t-base) var(--ease),
    border-color var(--t-base) var(--ease),
    backdrop-filter var(--t-base) var(--ease),
    box-shadow var(--t-base) var(--ease),
    transform var(--t-base) var(--ease);
}

.navbar.is-scrolled {
  background: rgba(10,10,15,0.82);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom-color: rgba(108,99,255,0.18);
  box-shadow: 0 1px 32px rgba(0,0,0,0.35);
}

body[data-theme="light"] .navbar.is-scrolled {
  background: rgba(244,244,248,0.88);
  border-bottom-color: rgba(89,82,232,0.15);
  box-shadow: 0 1px 24px rgba(0,0,0,0.08);
}

.navbar.is-hidden {
  transform: translateY(calc(-1 * var(--nav-h) - 4px));
}

.nav-container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--sp-2);
  height: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

@media (min-width: 768px)  { .nav-container { padding: 0 var(--sp-3); } }
@media (min-width: 1280px) { .nav-container { padding: 0 var(--sp-5); } }

.nav-logo a {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 800;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.02em;
}

.nav-menu {
  display: flex;
  gap: var(--sp-3);
  align-items: center;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  margin-left: auto;
}

.nav-link {
  font-weight: 500;
  font-size: 14px;
  color: var(--text-muted);
  padding: var(--sp-1) var(--sp-2);
  border-radius: var(--r-s);
  position: relative;
  transition: color var(--t-base);
  letter-spacing: 0.01em;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: var(--sp-2);
  right: var(--sp-2);
  height: 2px;
  background: var(--gradient);
  border-radius: 2px;
  opacity: 0;
  transform: scaleX(0);
  transition: opacity var(--t-base), transform var(--t-base) var(--ease-spring);
}

.nav-link:hover,
.nav-link:focus-visible,
.nav-link.active {
  color: var(--text);
}

.nav-link:hover::after,
.nav-link:focus-visible::after,
.nav-link.active::after {
  opacity: 1;
  transform: scaleX(1);
}

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 32px;
  height: 32px;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  border-radius: var(--r-s);
  transition: background var(--t-base);
}

.nav-toggle:hover { background: var(--glass); }

.nav-toggle .bar {
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all var(--t-base);
}

.nav-toggle.active .bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active .bar:nth-child(2) { opacity: 0; }
.nav-toggle.active .bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Theme / Lang toggles */
.theme-toggle,
.lang-toggle {
  height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--r-s);
  background: var(--glass);
  border: 1px solid var(--glass-border);
  color: var(--text-muted);
  transition: transform var(--t-base) var(--ease-spring),
              color var(--t-base),
              border-color var(--t-base),
              background var(--t-base);
}

.theme-toggle { width: 38px; }
.lang-toggle  { min-width: 42px; padding: 0 10px; font-weight: 700; font-size: 12px; letter-spacing: 0.06em; }

.theme-toggle:hover,
.theme-toggle:focus-visible,
.lang-toggle:hover,
.lang-toggle:focus-visible {
  transform: translateY(-2px);
  border-color: var(--accent-1);
  color: var(--accent-2);
}

.theme-toggle i { font-size: 15px; }

/* ============================================================
   SECTION MAP
   ============================================================ */
.section-map {
  position: fixed;
  left: 14px;
  top: 50%;
  transform: translateY(-50%) translateX(-14px);
  z-index: 950;
  display: none;
  width: 164px;
  flex-direction: column;
  gap: 8px;
  padding: 12px 10px;
  border-radius: var(--r-l);
  border: 1px solid var(--glass-border);
  background: var(--glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--glass-shadow);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--t-base), transform var(--t-base);
}

.section-map::before {
  content: '';
  position: absolute;
  left: 20px;
  top: 16px;
  bottom: 74px;
  width: 2px;
  background: linear-gradient(180deg, rgba(108,99,255,0.2), rgba(0,212,255,0.4), rgba(108,99,255,0.2));
}

.section-map.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(-50%) translateX(0);
}

.map-item {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 8px;
  border-radius: 999px;
  color: var(--text-muted);
  transition: transform var(--t-base), color var(--t-base), background var(--t-base);
}

.map-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 2px solid rgba(108,99,255,0.4);
  background: var(--bg);
  z-index: 1;
  flex-shrink: 0;
  transition: transform var(--t-base), background var(--t-base), border-color var(--t-base), box-shadow var(--t-base);
}

.map-label {
  font-size: 13px;
  font-weight: 600;
  opacity: 0.72;
  white-space: nowrap;
  transition: opacity var(--t-base), transform var(--t-base);
}

.map-item:hover .map-dot,
.map-item:focus-visible .map-dot {
  border-color: var(--accent-2);
  transform: scale(1.15);
}

.map-item.is-active {
  transform: translateX(6px);
  background: rgba(108,99,255,0.1);
  color: var(--text);
}

.map-item.is-active .map-dot {
  background: var(--gradient);
  border-color: transparent;
  box-shadow: 0 0 0 5px rgba(108,99,255,0.15);
  transform: scale(1.2);
}

.map-item.is-active .map-label {
  opacity: 1;
  transform: translateX(3px);
}

.map-controls {
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid rgba(108,99,255,0.15);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  position: relative;
  z-index: 1;
}

.section-map .theme-toggle,
.section-map .lang-toggle {
  width: 100%;
  min-width: 0;
  height: 32px;
  border-radius: var(--r-s);
}

.section-map .theme-toggle i { font-size: 13px; }
.section-map .lang-toggle { font-size: 11px; }

@media (min-width: 1180px) { .section-map { display: flex; } }
@media (max-width: 1179px) { .section-map { display: none !important; } }

/* ============================================================
   HERO
   ============================================================ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  padding-top: var(--nav-h);
  padding-bottom: var(--sp-5);
  overflow: hidden;
}

#hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

.hero-container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: var(--sp-5) var(--sp-2);
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-5);
  align-items: center;
  position: relative;
  z-index: 1;
}

@media (min-width: 768px) {
  .hero-container {
    grid-template-columns: 55fr 45fr;
    padding: var(--sp-5) var(--sp-3);
  }
}

@media (min-width: 1280px) {
  .hero-container { padding: var(--sp-5); }
}

.hero-content { text-align: center; }

@media (min-width: 768px) { .hero-content { text-align: left; } }

/* Title */
.hero-title {
  font-family: var(--font-display);
  font-size: var(--h1);
  font-weight: 800;
  line-height: 1.08;
  margin-bottom: var(--sp-3);
  color: var(--text);
  letter-spacing: -0.03em;
}

.hero-title .highlight {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Animated highlight chars (typewriter) */
.hero-title .highlight-animated {
  display: inline-flex;
  gap: 0.01em;
  margin-left: 0.12em;
  background: none;
  -webkit-text-fill-color: initial;
  color: var(--accent-2);
}

.hero-title .highlight-char {
  display: inline-block;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  opacity: 0;
  transform: translateY(18px) scale(0.88);
  filter: blur(3px);
  animation: char-in 550ms var(--ease) forwards;
}

@keyframes char-in {
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
    filter: blur(0);
  }
}

/* Glitch RGB effect */
.highlight-animated.is-glitching {
  animation: glitch-rgb 1.5s linear forwards;
}

@keyframes glitch-rgb {
  0%, 100% { filter: none; transform: none; }
  6%  { filter: drop-shadow(-3px 0 rgba(255,30,30,0.85)) drop-shadow(3px 0 rgba(0,200,255,0.85)); transform: translate(-1px,0); }
  12% { filter: drop-shadow(3px 0 rgba(255,30,30,0.85)) drop-shadow(-3px 0 rgba(0,200,255,0.85)); transform: translate(1px,0); }
  18% { filter: none; transform: none; }
  32% { filter: drop-shadow(-2px 0 rgba(255,50,100,0.8)) drop-shadow(2px 0 rgba(0,180,255,0.8)); transform: translate(0,-1px); }
  38% { filter: none; }
  52% { filter: drop-shadow(-4px 0 rgba(255,20,20,0.7)) drop-shadow(4px 0 rgba(0,200,255,0.7)); transform: translate(2px,0); }
  58% { filter: none; transform: none; }
  72% { filter: drop-shadow(-1px 0 rgba(255,30,30,0.6)) drop-shadow(1px 0 rgba(0,212,255,0.6)); }
  78% { filter: none; }
}

.hero-subtitle {
  font-size: clamp(16px, 2vw, 22px);
  font-weight: 600;
  color: var(--accent-1);
  margin-bottom: var(--sp-2);
  letter-spacing: -0.01em;
}

.hero-description {
  font-size: 17px;
  color: var(--text-muted);
  margin-bottom: var(--sp-4);
  line-height: 1.75;
  max-width: 540px;
  margin-left: auto;
  margin-right: auto;
}

@media (min-width: 768px) {
  .hero-description { margin-left: 0; margin-right: 0; }
}

.hero-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: var(--sp-4);
  justify-content: center;
}

@media (min-width: 768px) { .hero-pills { justify-content: flex-start; } }

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 14px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  border: 1px solid rgba(108,99,255,0.3);
  background: rgba(108,99,255,0.08);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: border-color var(--t-base), background var(--t-base), transform var(--t-base);
}

.hero-pill:hover {
  border-color: var(--accent-2);
  background: rgba(0,212,255,0.1);
  transform: translateY(-2px);
}

.hero-pill i { color: var(--accent-2); font-size: 12px; }

body[data-theme="light"] .hero-pill {
  color: #0f172a;
  border-color: rgba(89,82,232,0.28);
  background: rgba(255,255,255,0.85);
}

body[data-theme="light"] .hero-pill i { color: var(--accent-1); }

.hero-buttons {
  display: flex;
  gap: var(--sp-3);
  flex-wrap: wrap;
  justify-content: center;
}

@media (min-width: 768px) { .hero-buttons { justify-content: flex-start; } }

/* Profile image */
.hero-image {
  display: flex;
  justify-content: center;
  align-items: center;
}

/* Animated border ring via conic-gradient */
.profile-ring {
  padding: 3px;
  border-radius: var(--r-xl);
  background: conic-gradient(from 0deg, var(--accent-1), var(--accent-2), var(--accent-1));
  animation: border-spin 4s linear infinite;
  display: inline-block;
  max-width: 380px;
  width: 100%;
}

@keyframes border-spin { to { transform: rotate(360deg); } }

.profile-image-container {
  border-radius: calc(var(--r-xl) - 2px);
  overflow: hidden;
  background: var(--surface);
  aspect-ratio: 1 / 1;
  position: relative;
  /* counter-rotate so the image stays upright while the gradient border spins */
  animation: border-spin-counter 4s linear infinite;
}

@keyframes border-spin-counter { to { transform: rotate(-360deg); } }

.profile-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
}

.profile-badge {
  position: absolute;
  right: 14px;
  bottom: 14px;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 7px 12px;
  border-radius: 999px;
  border: 1px solid rgba(108,99,255,0.4);
  background: rgba(10,10,15,0.75);
  color: var(--text);
  font-size: 13px;
  font-weight: 600;
  backdrop-filter: blur(8px);
}

.profile-badge i { color: var(--accent-2); }

body[data-theme="light"] .profile-badge {
  color: #0f172a;
  border-color: rgba(89,82,232,0.3);
  background: rgba(255,255,255,0.88);
}

body[data-theme="light"] .profile-badge i { color: var(--accent-1); }

/* Scroll indicator */
.scroll-indicator {
  position: absolute;
  bottom: var(--sp-4);
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
}

.scroll-arrow {
  width: 18px;
  height: 18px;
  border-right: 2px solid var(--text-muted);
  border-bottom: 2px solid var(--text-muted);
  transform: rotate(45deg);
  animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
  0%, 100% { transform: translateY(0) rotate(45deg); }
  50%       { transform: translateY(8px) rotate(45deg); }
}

/* ============================================================
   LAYOUT HELPERS
   ============================================================ */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--sp-2);
}

@media (min-width: 768px)  { .container { padding: 0 var(--sp-3); } }
@media (min-width: 1280px) { .container { padding: 0 var(--sp-5); } }

section {
  padding: var(--sp-5) 0;
  position: relative;
  z-index: 1;
}

@media (min-width: 768px)  { section { padding: 80px 0; } }
@media (min-width: 1024px) { section { padding: 100px 0; } }

/* Decorative section dividers */
section:not(.hero)::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: min(70%, 500px);
  height: 1px;
  background: linear-gradient(90deg,
    transparent 0%,
    rgba(108,99,255,0.3) 25%,
    rgba(0,212,255,0.4) 50%,
    rgba(108,99,255,0.3) 75%,
    transparent 100%);
  opacity: 0.5;
}

.section-title {
  font-family: var(--font-display);
  font-size: var(--h2);
  font-weight: 800;
  text-align: center;
  margin-bottom: var(--sp-5);
  margin-top: var(--sp-4);
  color: var(--text);
  position: relative;
  padding-bottom: var(--sp-3);
  letter-spacing: -0.02em;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 48px;
  height: 3px;
  background: var(--gradient);
  border-radius: 2px;
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-1);
  padding: 12px var(--sp-4);
  font-size: 15px;
  font-weight: 600;
  font-family: inherit;
  border-radius: var(--r-m);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--t-base) var(--ease);
  text-align: center;
  white-space: nowrap;
  position: relative;
  overflow: hidden;
  letter-spacing: 0.01em;
}

/* Hover shine sweep */
.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15), transparent);
  transition: left var(--t-slow);
  pointer-events: none;
}

.btn:hover::before { left: 100%; }

.btn-primary {
  background: var(--glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-color: rgba(108,99,255,0.35);
  color: var(--text);
  box-shadow: 0 0 0 1px rgba(108,99,255,0.1) inset;
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background: rgba(108,99,255,0.15);
  border-color: var(--accent-1);
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(108,99,255,0.3);
  color: var(--accent-2);
}

.btn-secondary {
  background: transparent;
  border-color: var(--glass-border);
  color: var(--text-muted);
}

.btn-secondary:hover,
.btn-secondary:focus-visible {
  background: var(--glass);
  border-color: var(--accent-2);
  color: var(--accent-2);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  border-color: var(--glass-border);
  color: var(--text-muted);
  font-size: 14px;
}

.btn-outline:hover,
.btn-outline:focus-visible {
  background: rgba(108,99,255,0.1);
  border-color: var(--accent-1);
  color: var(--accent-1);
}

/* Ripple */
.ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(255,255,255,0.55);
  transform: scale(0);
  animation: ripple-anim 0.55s linear;
  pointer-events: none;
}

@keyframes ripple-anim {
  to { transform: scale(4); opacity: 0; }
}

/* ============================================================
   ABOUT
   ============================================================ */
.about-content { max-width: 860px; margin: 0 auto; }

.about-text > p {
  font-size: 17px;
  color: var(--text-muted);
  margin-bottom: var(--sp-3);
  line-height: 1.8;
  text-align: center;
}

@media (min-width: 768px) { .about-text > p { text-align: left; } }

/* Slide-up reveal for about panels */
.about-reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.65s var(--ease-out), transform 0.65s var(--ease-out);
}

.about-reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

.about-panel {
  margin-top: var(--sp-4);
  padding: var(--sp-3);
  border-radius: var(--r-l);
  border: 1px solid rgba(108,99,255,0.2);
  background: rgba(17,17,24,0.6);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 12px 32px rgba(0,0,0,0.3);
  transition: border-color var(--t-base), box-shadow var(--t-base), transform var(--t-base);
}

.about-panel:hover {
  border-color: rgba(0,212,255,0.35);
  box-shadow: 0 16px 40px rgba(108,99,255,0.18);
  transform: translateY(-3px);
}

body[data-theme="light"] .about-panel {
  border-color: rgba(89,82,232,0.18);
  background: rgba(255,255,255,0.88);
  box-shadow: 0 12px 32px rgba(89,82,232,0.1);
}

body[data-theme="light"] .about-panel:hover {
  border-color: rgba(0,153,204,0.3);
  box-shadow: 0 16px 40px rgba(89,82,232,0.14);
}

.about-panel h3 {
  font-family: var(--font-display);
  font-size: clamp(18px, 2vw, 22px);
  font-weight: 700;
  margin-bottom: var(--sp-2);
  color: var(--text);
}

.about-points {
  list-style: none;
  display: grid;
  gap: 10px;
}

.about-points li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  color: var(--text-muted);
  line-height: 1.7;
}

.about-points i {
  color: var(--accent-2);
  margin-top: 4px;
  flex-shrink: 0;
}

body[data-theme="light"] .about-points li { color: #1e293b; }

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

@media (max-width: 480px) { .social-skills-list { grid-template-columns: 1fr; } }

.about-focus {
  margin-top: var(--sp-3);
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.about-focus span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid rgba(108,99,255,0.28);
  background: rgba(108,99,255,0.1);
  color: var(--text);
  font-weight: 500;
  font-size: 14px;
  transition: border-color var(--t-base), transform var(--t-base);
}

.about-focus span:hover { border-color: var(--accent-2); transform: translateY(-2px); }
.about-focus i { color: var(--accent-2); }

body[data-theme="light"] .about-focus span {
  color: #0f172a;
  border-color: rgba(89,82,232,0.28);
  background: rgba(255,255,255,0.85);
}

/* ============================================================
   SKILLS  — 3D flip cascade
   ============================================================ */
.skills-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-3);
  perspective: 1200px;
}

@media (min-width: 768px) {
  .skills-grid { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: var(--sp-4); }
}

.skill-category {
  background: var(--glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: var(--r-l);
  padding: var(--sp-4);
  box-shadow: var(--glass-shadow);
  /* Initial state for flip animation */
  opacity: 0;
  transform: rotateY(90deg);
  transform-style: preserve-3d;
  transition: opacity 0.6s var(--ease),
              transform 0.6s var(--ease),
              border-color var(--t-base),
              box-shadow var(--t-base),
              background var(--t-base);
}

.skill-category.flip-in {
  opacity: 1;
  transform: rotateY(0deg);
}

/* Hover lift — only after flipped in */
.skill-category.flip-in:hover {
  border-color: rgba(108,99,255,0.4);
  background: var(--glass-hover);
  box-shadow: 0 16px 40px rgba(108,99,255,0.2);
  transform: rotateY(0deg) translateY(-4px);
}

.skill-category h3 {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: var(--sp-3);
  display: flex;
  align-items: center;
  gap: 10px;
}

.skill-category h3 i { color: var(--accent-2); }

.skills-info-list {
  list-style: none;
  display: grid;
  gap: 8px;
}

.skill-info-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 12px;
  border: 1px solid rgba(108,99,255,0.15);
  border-radius: var(--r-m);
  background: rgba(255,255,255,0.02);
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.6;
  transition: border-color var(--t-base), background var(--t-base), transform var(--t-base);
}

.skill-info-item:hover {
  border-color: rgba(0,212,255,0.35);
  background: rgba(0,212,255,0.06);
  transform: translateX(4px);
}

.skill-info-item i {
  color: var(--accent-2);
  margin-top: 3px;
  font-size: 15px;
  flex-shrink: 0;
}

/* ============================================================
   JOURNEY (Studies / Work)
   ============================================================ */
.journey-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-4);
}

@media (min-width: 1024px) {
  .journey-layout { grid-template-columns: 1.35fr 1fr; }
  .journey-layout--single { grid-template-columns: 1fr; }
}

.timeline {
  position: relative;
  padding-left: 32px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 9px;
  top: 14px;
  bottom: 14px;
  width: 2px;
  background: linear-gradient(180deg,
    rgba(108,99,255,0.2) 0%,
    rgba(0,212,255,0.7) 50%,
    rgba(108,99,255,0.2) 100%);
}

.timeline-item {
  position: relative;
  margin-bottom: var(--sp-3);
}

.timeline-item:last-child { margin-bottom: 0; }

.timeline-dot {
  position: absolute;
  left: -32px;
  top: 18px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--gradient);
  box-shadow: 0 0 0 5px rgba(108,99,255,0.12);
}

.timeline-card {
  background: var(--glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: var(--r-l);
  padding: var(--sp-3);
  box-shadow: var(--glass-shadow);
  transition: border-color var(--t-base), background var(--t-base), transform var(--t-base), box-shadow var(--t-base);
}

.timeline-card:hover {
  transform: translateY(-3px);
  border-color: rgba(108,99,255,0.4);
  background: var(--glass-hover);
  box-shadow: 0 12px 36px rgba(108,99,255,0.2);
}

.timeline-date {
  color: var(--accent-2);
  font-weight: 600;
  font-size: 13px;
  margin-bottom: 6px;
  letter-spacing: 0.02em;
}

.timeline-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 6px;
}

.timeline-card-header .timeline-date { margin-bottom: 0; }

.badge-active {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: #06101b;
  background: linear-gradient(135deg, var(--accent-2), #b8fff0);
  text-transform: uppercase;
}

.badge-active::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #06101b;
  animation: pulse-dot 1.5s ease-in-out infinite;
  flex-shrink: 0;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.4; transform: scale(0.6); }
}

@media (prefers-reduced-motion: reduce) {
  .badge-active::before { animation: none; }
}

.timeline-card h3 {
  font-size: clamp(16px, 1.8vw, 20px);
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text);
}

.timeline-card p { color: var(--text-muted); margin: 0; font-size: 14px; line-height: 1.7; }

.milestones { display: grid; gap: var(--sp-3); }

.milestones--studies { grid-template-columns: 1fr; }

@media (min-width: 640px) {
  .milestones--studies { grid-template-columns: repeat(2, 1fr); }
}

.milestone-card {
  background: linear-gradient(140deg, rgba(108,99,255,0.12), rgba(0,212,255,0.06));
  border: 1px solid rgba(108,99,255,0.22);
  border-radius: var(--r-l);
  padding: var(--sp-3);
  transition: border-color var(--t-base), box-shadow var(--t-base), transform var(--t-base);
}

.milestone-card:hover {
  transform: translateY(-3px);
  border-color: rgba(0,212,255,0.4);
  box-shadow: 0 12px 32px rgba(108,99,255,0.18);
}

.milestone-card i {
  color: var(--accent-2);
  font-size: 20px;
  margin-bottom: 8px;
  display: block;
}

.milestone-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text);
}

.milestone-card p { color: var(--text-muted); margin: 0; font-size: 14px; }

/* ============================================================
   PROJECTS  — 3D tilt + shine + number
   ============================================================ */
.projects-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-3);
}

@media (min-width: 500px) {
  .projects-grid { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
}

@media (min-width: 768px) { .projects-grid { gap: var(--sp-4); } }

.project-card {
  background: var(--glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: var(--r-l);
  overflow: hidden;
  box-shadow: var(--glass-shadow);
  display: flex;
  flex-direction: column;
  position: relative;
  transform-style: preserve-3d;
  transform-origin: center;
  transition: border-color var(--t-base), box-shadow var(--t-base);
  will-change: transform;
}

/* Shine layer — moves with mouse via CSS custom props */
.project-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(
    circle at var(--mouse-x, 50%) var(--mouse-y, 50%),
    rgba(108,99,255,0.14) 0%,
    transparent 60%
  );
  opacity: 0;
  transition: opacity var(--t-base);
  pointer-events: none;
  z-index: 1;
}

.project-card:hover::before { opacity: 1; }

.project-card:hover {
  border-color: rgba(108,99,255,0.35);
  box-shadow: 0 20px 50px rgba(108,99,255,0.22);
}

/* Decorative project number */
.project-number {
  position: absolute;
  bottom: -10px;
  right: 14px;
  font-family: var(--font-display);
  font-size: 7rem;
  font-weight: 800;
  line-height: 1;
  color: var(--text);
  opacity: 0.045;
  pointer-events: none;
  user-select: none;
  z-index: 0;
  letter-spacing: -0.04em;
}

.project-image {
  width: 100%;
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, rgba(108,99,255,0.15), rgba(0,212,255,0.08));
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
  z-index: 2;
}

.project-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 3;
  padding: 5px 10px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: #06101b;
  background: linear-gradient(135deg, var(--accent-2), #b8fff0);
}

.project-placeholder {
  font-size: 2.8rem;
  color: var(--accent-1);
  opacity: 0.55;
}

.project-content {
  padding: var(--sp-4);
  display: flex;
  flex-direction: column;
  flex-grow: 1;
  position: relative;
  z-index: 2;
}

.project-content h3 {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: var(--sp-2);
  letter-spacing: -0.01em;
}

.project-content p {
  color: var(--text-muted);
  margin-bottom: var(--sp-3);
  line-height: 1.7;
  flex-grow: 1;
  font-size: 14px;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: var(--sp-3);
}

.project-tech span {
  background: rgba(108,99,255,0.12);
  color: var(--accent-2);
  padding: 4px 10px;
  border-radius: var(--r-s);
  font-size: 12px;
  font-weight: 600;
  border: 1px solid rgba(108,99,255,0.25);
  letter-spacing: 0.02em;
}

.project-links {
  display: flex;
  gap: var(--sp-2);
  flex-wrap: wrap;
}

.project-links .btn { min-width: 120px; }

/* ============================================================
   CONTACT
   ============================================================ */
/* SVG animated separator */
.contact-divider {
  display: block;
  width: 100%;
  max-width: 560px;
  margin: 0 auto var(--sp-5);
  overflow: visible;
}

.contact-divider line {
  stroke: url(#sep-grad);
  stroke-width: 2;
  stroke-dasharray: 600;
  stroke-dashoffset: 600;
  transition: stroke-dashoffset 1.2s var(--ease-out);
}

.contact-divider.drawn line { stroke-dashoffset: 0; }

.contact-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-5);
}

@media (min-width: 768px) {
  .contact-content { grid-template-columns: 1fr 1fr; }
}

.contact-info h3 {
  font-family: var(--font-display);
  font-size: var(--h3);
  font-weight: 700;
  color: var(--text);
  margin-bottom: var(--sp-2);
}

.contact-info > p {
  font-size: 16px;
  color: var(--text-muted);
  margin-bottom: var(--sp-4);
  line-height: 1.7;
}

.contact-items { margin-bottom: var(--sp-4); }

.contact-item {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  margin-bottom: var(--sp-3);
  color: var(--text-muted);
}

.contact-item i {
  width: 22px;
  color: var(--accent-1);
  font-size: 16px;
  flex-shrink: 0;
}

.social-links {
  display: flex;
  gap: var(--sp-2);
  flex-wrap: wrap;
}

.social-link {
  width: 46px;
  height: 46px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: var(--r-m);
  color: var(--text-muted);
  transition: all var(--t-base);
}

.social-link:hover,
.social-link:focus-visible {
  transform: translateY(-4px);
  border-color: var(--accent-1);
  color: var(--accent-2);
  background: rgba(108,99,255,0.12);
  box-shadow: 0 8px 24px rgba(108,99,255,0.25);
}

.social-link i { font-size: 18px; }

/* ============================================================
   FLOATING LABEL FORM
   ============================================================ */
.contact-form {
  background: var(--glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: var(--r-l);
  padding: var(--sp-4);
  box-shadow: var(--glass-shadow);
}

.form-field {
  position: relative;
  margin-bottom: var(--sp-4);
}

.form-field input,
.form-field textarea {
  width: 100%;
  padding: 20px 0 8px;
  background: transparent;
  border: none;
  border-bottom: 1.5px solid rgba(108,99,255,0.25);
  color: var(--text);
  font-size: 15px;
  font-family: inherit;
  outline: none;
  transition: border-color var(--t-base);
  resize: vertical;
}

.form-field input:focus,
.form-field textarea:focus {
  border-bottom-color: var(--accent-1);
}

.form-field label {
  position: absolute;
  left: 0;
  top: 20px;
  color: var(--text-muted);
  font-size: 15px;
  pointer-events: none;
  transition: top 0.2s var(--ease), font-size 0.2s var(--ease), color 0.2s var(--ease);
}

/* Float label when focused OR input has value */
.form-field input:focus ~ label,
.form-field input:not(:placeholder-shown) ~ label,
.form-field textarea:focus ~ label,
.form-field textarea:not(:placeholder-shown) ~ label,
.form-field.has-value label {
  top: 2px;
  font-size: 11px;
  color: var(--accent-1);
  letter-spacing: 0.05em;
  font-weight: 600;
}

.form-field textarea { min-height: 90px; }

/* Bottom border glow on focus */
.form-field::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--gradient);
  border-radius: 2px;
  transition: width var(--t-slow) var(--ease-out);
}

.form-field:focus-within::after { width: 100%; }

.contact-form .btn { width: 100%; margin-top: var(--sp-2); }

body[data-theme="light"] .form-field input,
body[data-theme="light"] .form-field textarea {
  color: #0f172a;
  border-bottom-color: rgba(89,82,232,0.25);
}

body[data-theme="light"] .form-field input::placeholder,
body[data-theme="light"] .form-field textarea::placeholder { color: transparent; }

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: rgba(10,10,15,0.75);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-top: 1px solid var(--glass-border);
  padding: var(--sp-4) 0;
  text-align: center;
  position: relative;
  z-index: 1;
}

.footer p { color: var(--text-muted); font-size: 14px; }

body[data-theme="light"] .footer {
  background: rgba(244,244,248,0.85);
  border-top-color: rgba(89,82,232,0.12);
}

body[data-theme="light"] .footer p { color: #5a6070; }

/* ============================================================
   SCROLL REVEAL (slide-up)
   ============================================================ */
.slide-up {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity var(--t-slow) var(--ease), transform var(--t-slow) var(--ease);
}

.slide-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   RESPONSIVE — MOBILE NAV
   ============================================================ */
@media (max-width: 767px) {
  .nav-menu {
    position: fixed;
    left: -100%;
    top: var(--nav-h);
    flex-direction: column;
    background: rgba(10,10,15,0.96);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    width: 100%;
    padding: var(--sp-4);
    transition: left var(--t-base);
    box-shadow: 0 8px 32px rgba(0,0,0,0.5);
    border-top: 1px solid var(--glass-border);
  }

  .nav-menu.active { left: 0; }

  .nav-toggle { display: flex; }

  .nav-link {
    padding: var(--sp-2);
    width: 100%;
    text-align: center;
    font-size: 16px;
  }
}

@media (max-width: 640px) {
  .hero { min-height: auto; padding-top: calc(var(--nav-h) + 12px); }
  .hero-container { gap: var(--sp-4); padding-top: var(--sp-4); }
  .section-title { margin-top: var(--sp-3); margin-bottom: var(--sp-4); }
  .project-links .btn { min-width: 0; width: 100%; }
  .profile-ring { max-width: 280px; }
}

/* ============================================================
   PREFERS-REDUCED-MOTION
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .cursor-dot,
  .cursor-ring { display: none; }

  .about-reveal { opacity: 1 !important; transform: none !important; transition: none !important; }

  .skill-category {
    opacity: 1 !important;
    transform: none !important;
  }

  .profile-ring { animation: none; }

  .slide-up { opacity: 1; transform: none; transition: none; }
}

/* ============================================================
   BACKDROP-FILTER FALLBACK
   ============================================================ */
@supports not (backdrop-filter: blur(1px)) {
  .navbar.is-scrolled,
  .skill-category,
  .project-card,
  .timeline-card,
  .about-panel,
  .contact-form,
  .social-link,
  .btn-primary {
    background: rgba(17,17,24,0.97);
  }
}