/*
  Global Styles and Theme
  - Light/Dark theme via [data-theme]
  - Modern, responsive typography and layout
  - Component classes: .navbar, .hero, .section, .card, .button, .marquee
*/

:root {
  --bg: #0f1221;
  --bg-elev: #151936;
  --text: #e7e9f1;
  --muted: #a9afc6;
  --primary: #7c5cff;
  --primary-600: #6a49ff;
  --accent: #00e0d6;
  --shadow: 0 10px 30px rgba(0,0,0,0.25);
  --card-glass: rgba(255,255,255,0.06);
  --border: rgba(255,255,255,0.12);
}

[data-theme="light"] {
  --bg: #f7f8fb;
  --bg-elev: #ffffff;
  --text: #111322;
  --muted: #40465a;
  --primary: #5b34ff;
  --primary-600: #4a26e6;
  --accent: #06b6d4;
  --shadow: 0 12px 28px rgba(16,24,40,0.12);
  --card-glass: rgba(0,0,0,0.04);
  --border: rgba(17,19,34,0.08);
}

* {
  box-sizing: border-box;
}

html, body {
  height: 100%;
}

body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, Helvetica Neue, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  position: relative;
}

/* Fixed site-wide background layer (stays constant while content scrolls) */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background: radial-gradient(1200px 1200px at 90% -10%, rgba(124,92,255,0.18), rgba(0,0,0,0) 40%), radial-gradient(800px 800px at 10% 110%, rgba(0,224,214,0.18), rgba(0,0,0,0) 40%), var(--bg);
  background-attachment: fixed;
  will-change: transform;
}

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

/* Layout Utilities */
.container {
  width: min(1180px, 92%);
  margin: 0 auto;
}

.grid {
  display: grid;
  gap: 24px;
}

.center {
  display: grid;
  place-items: center;
}

/* Navbar */
.navbar-wrap {
  position: fixed;
  inset: 16px 0 auto 0;
  display: flex;
  justify-content: center;
  z-index: 40;
}

.navbar {
  display: flex;
  gap: 18px;
  align-items: center;
  background: linear-gradient(180deg, rgba(255,255,255,0.06), rgba(255,255,255,0.04));
  border: 1px solid var(--border);
  backdrop-filter: blur(10px);
  border-radius: 999px;
  padding: 10px 14px;
  box-shadow: var(--shadow);
}

.nav-brand {
  font-weight: 800;
  letter-spacing: 0.4px;
  font-size: 14px;
  text-transform: uppercase;
  color: var(--muted);
  padding: 8px 12px;
}

.nav-links {
  display: flex;
  gap: 6px;
}

.nav-link {
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid transparent;
  transition: all .25s ease;
}

.nav-link:hover {
  background: var(--card-glass);
  border-color: var(--border);
}

.theme-toggle {
  margin-left: 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 999px;
  background: var(--primary);
  color: white;
  border: none;
  cursor: pointer;
  transition: transform .2s ease, box-shadow .2s ease, background .25s ease;
  box-shadow: 0 6px 20px rgba(124,92,255,0.45);
}

.theme-toggle:hover { transform: translateY(-1px) scale(1.02); }
.theme-toggle:active { transform: translateY(0) scale(0.98); }

/* Hero */
.hero {
  padding-top: 120px;
  padding-bottom: 56px;
}

.hero .hero-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 28px;
  align-items: center;
}

.hero .photo-wrap {
  position: relative;
}

.blob {
  position: absolute;
  inset: -30px -30px -30px -30px;
  background: radial-gradient(400px 400px at 30% 30%, rgba(124,92,255,0.5), rgba(0,0,0,0)), radial-gradient(400px 400px at 70% 70%, rgba(0,224,214,0.5), rgba(0,0,0,0));
  filter: blur(40px);
  animation: float 8s ease-in-out infinite;
  z-index: 0;
}

.photo {
  position: relative;
  z-index: 1;
  border-radius: 18px;
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  width: min(420px, 100%);
  aspect-ratio: 5 / 6;
  will-change: transform;
}

.photo img { width: 100%; height: 100%; object-fit: cover; }

.hero h1 {
  font-size: clamp(36px, 5vw, 64px);
  line-height: 1.05;
  margin: 0 0 12px 0;
  font-weight: 900;
}

.hero p {
  color: var(--muted);
  font-size: clamp(16px, 2vw, 18px);
  margin: 0 0 18px 0;
}

.accent {
  background: linear-gradient(90deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* Typewriter caret */
.type {
  position: relative;
  display: inline-block;
}
.type::after {
  content: '';
  display: inline-block;
  width: 2px;
  height: 1.1em;
  background: currentColor;
  margin-left: 4px;
  animation: caret 1s steps(1) infinite;
}

@keyframes caret {
  0%, 60% { opacity: 1; }
  60.01%, 100% { opacity: 0; }
}

.button {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 18px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: linear-gradient(180deg, var(--bg-elev), color-mix(in oklab, var(--bg-elev) 80%, black 20%));
  color: var(--text);
  text-decoration: none;
  font-weight: 700;
  transition: transform .2s ease, box-shadow .2s ease, border-color .25s ease;
  box-shadow: var(--shadow);
}

.button:hover { transform: translateY(-2px); border-color: var(--primary); }

/* Sections */
.section {
  padding: 40px 0 72px 0;
}

.section .section-title {
  font-size: 28px;
  font-weight: 800;
  margin: 0 0 16px 0;
}

.muted { color: var(--muted); }

/* Cards */
.cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.card {
  background: linear-gradient(180deg, var(--card-glass), transparent);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 18px;
  transition: transform .25s ease, border-color .25s ease, background .25s ease;
  position: relative;
  overflow: hidden;
}

.card:hover {
  transform: translateY(-6px);
  border-color: color-mix(in oklab, var(--primary) 60%, var(--border));
  background: linear-gradient(180deg, color-mix(in oklab, var(--primary) 12%, var(--card-glass)), transparent);
}

.card h3 { margin: 0 0 8px 0; font-size: 20px; }
.card p { margin: 0; color: var(--muted); }

.card-link { text-decoration: none; color: inherit; display: block; height: 100%; }

/* Marquee / Project carousel (continuous scroll) */
.marquee {
  overflow: hidden;
  position: relative;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: linear-gradient(180deg, var(--card-glass), transparent);
}

.marquee-track {
  display: flex;
  gap: 18px;
  padding: 14px;
  animation: scroll 22s linear infinite;
}

.marquee:hover .marquee-track { animation-play-state: paused; }

.project-pill {
  white-space: nowrap;
  padding: 10px 14px;
  background: var(--bg-elev);
  border-radius: 999px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

/* About overlay */
.cover {
  position: relative;
  border-radius: 18px;
  overflow: hidden;
  border: 1px solid var(--border);
}

.cover img { width: 100%; height: 420px; object-fit: cover; filter: saturate(1.1) contrast(1.1); }

.cover .overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0,0,0,0.2), rgba(0,0,0,0.5));
  display: grid;
  place-items: center;
  text-align: center;
  padding: 24px;
}

.cover .overlay h2 {
  font-size: clamp(24px, 4vw, 40px);
  margin: 0 0 10px 0;
}

.socials {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.social {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--bg-elev);
  text-decoration: none;
  color: var(--text);
  transition: transform .2s ease, border-color .25s ease;
}

.social:hover { transform: translateY(-2px); border-color: var(--primary); }

/* About features */
.about-features {
  margin-top: 16px;
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 18px;
}

.about-card {
  background: linear-gradient(180deg, var(--card-glass), transparent);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 18px;
  box-shadow: var(--shadow);
}

.stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0,1fr));
  gap: 12px;
}

.stat {
  text-align: center;
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: linear-gradient(180deg, var(--bg-elev), color-mix(in oklab, var(--bg-elev) 85%, black 15%));
}

.stat .num { font-size: 28px; font-weight: 900; }
.stat .label { color: var(--muted); font-weight: 600; font-size: 12px; letter-spacing: .3px; text-transform: uppercase; }

.chips { display: flex; flex-wrap: wrap; gap: 10px; }
.chip {
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--bg-elev);
  color: var(--text);
}

.cta-row { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 12px; }
.button.secondary { background: linear-gradient(180deg, var(--card-glass), transparent); }

/* Reveal on scroll */
.reveal { opacity: 0; transform: translateY(8px); transition: all .6s ease; }
.reveal.in { opacity: 1; transform: none; }

/* Page headers */
.page-hero {
  padding-top: 120px;
  padding-bottom: 28px;
}

.page-hero h1 {
  font-size: clamp(40px, 6vw, 78px);
  margin: 0;
  line-height: .95;
  letter-spacing: -0.02em;
  background: linear-gradient(90deg, var(--text), color-mix(in oklab, var(--text) 72%, var(--primary)));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: glow 3s ease-in-out infinite;
}

.page-sub {
  color: var(--muted);
  margin-top: 8px;
}

/* Coder page components */
.hero-coder h1 {
  font-size: clamp(44px, 7vw, 92px);
  margin: 0;
  line-height: .9;
  letter-spacing: -0.02em;
  background: linear-gradient(90deg, var(--primary) 20%, var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: glow 4s ease-in-out infinite;
}

.badges { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 12px; }
.badge {
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: linear-gradient(180deg, var(--card-glass), transparent);
  color: var(--text);
  font-weight: 600;
  font-size: 12px;
  letter-spacing: .3px;
  text-transform: uppercase;
}

.terminal {
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  background: linear-gradient(180deg, var(--bg-elev), color-mix(in oklab, var(--bg-elev) 85%, black 15%));
  box-shadow: var(--shadow);
}
.terminal .titlebar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, var(--card-glass), transparent);
}
.dot { width: 10px; height: 10px; border-radius: 50%; display: inline-block; }
.dot.red { background: #ff5f56; }
.dot.yellow { background: #ffbd2e; }
.dot.green { background: #27c93f; }
.terminal pre {
  margin: 0;
  padding: 16px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 13px;
  color: color-mix(in oklab, var(--text) 90%, #b2b7d0);
  min-height: 160px;
  white-space: pre-wrap;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}
.project-card {
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  background: linear-gradient(180deg, var(--card-glass), transparent);
  transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
  display: block;
  text-decoration: none;
  color: inherit;
}
.project-card:hover { transform: translateY(-6px); border-color: var(--primary); box-shadow: var(--shadow); }
.project-media { height: 160px; background: var(--bg-elev); display: grid; place-items: center; color: var(--muted); font-weight: 700; letter-spacing: .6px; }
.project-body { padding: 14px; }
.project-body h3 { margin: 0 0 8px 0; }
.project-tags { display: flex; gap: 8px; flex-wrap: wrap; }
.tag { font-size: 12px; padding: 6px 10px; border-radius: 999px; border: 1px solid var(--border); color: var(--muted); }

/* End-cap */
.end-cap { padding: 32px 0 28px 0; }
.end-cap .bar {
  height: 2px;
  width: 100%;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: 999px;
  box-shadow: 0 0 18px color-mix(in oklab, var(--primary) 60%, transparent);
}
.end-cap .line {
  margin-top: 12px;
  font-weight: 900;
  letter-spacing: -0.01em;
  font-size: clamp(18px, 3vw, 22px);
}

@media (max-width: 1024px) {
  .projects-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 640px) {
  .projects-grid { grid-template-columns: 1fr; }
}

/* Lists and skills */
.skills-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.skill {
  text-align: center;
  padding: 16px 12px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: linear-gradient(180deg, var(--card-glass), transparent);
  transition: transform .25s ease, border-color .25s ease;
}

.skill:hover { transform: translateY(-6px) rotate(-1deg); border-color: var(--primary); }

/* Organizer roles */
.role {
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px;
  background: linear-gradient(180deg, var(--card-glass), transparent);
  transition: transform .25s ease, border-color .25s ease;
}

.role:hover { transform: translateY(-4px); border-color: var(--primary); }

/* Footer spacer */
.footer-space { height: 60px; }

/* Signature section */
.signature {
  padding: 36px 0 24px 0;
}
.signature .sig-box {
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 18px;
  background: linear-gradient(180deg, var(--card-glass), transparent);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.sig-title {
  font-weight: 900;
  font-size: clamp(18px, 3vw, 24px);
}
.sig-sub { color: var(--muted); }

/* Animations */
@keyframes float {
  0%, 100% { transform: translateY(0) translateX(0); }
  50% { transform: translateY(-10px) translateX(6px); }
}

@keyframes scroll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

@keyframes glow {
  0%, 100% { filter: drop-shadow(0 0 0 rgba(124,92,255,0.0)); }
  50% { filter: drop-shadow(0 0 18px rgba(124,92,255,0.35)); }
}

/* Responsive */
@media (max-width: 1024px) {
  .skills-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .cards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero .hero-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .skills-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .cards { grid-template-columns: 1fr; }
  .navbar { gap: 10px; padding: 8px 10px; }
  .nav-link { padding: 8px 10px; font-size: 14px; }
}