/* ═══════════════════════════════════════════
   MANAS VARDHAN — PERSONAL WEBSITE
   ═══════════════════════════════════════════ */

:root {
  --bg: #0a0a1a;
  --text: #e8e4de;
  --accent: #d4a574;
  --crimson: #8b2252;
  --teal: #2a6f7f;
  --panel: rgba(10, 10, 26, 0.85);
  --serif: 'Playfair Display', Georgia, serif;
  --mono: 'JetBrains Mono', 'Courier New', monospace;
  --sans: 'Inter', -apple-system, sans-serif;
}

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

html {
  scroll-behavior: smooth;
  scroll-snap-type: y proximity;
  overflow-x: hidden;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-weight: 300;
  font-size: 16px;
  line-height: 1.6;
  cursor: none;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ── Custom Cursor ────────────────────── */
.custom-cursor {
  position: fixed;
  width: 40px;
  height: 40px;
  border: 1px solid rgba(232, 228, 222, 0.4);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9999;
  transform: translate(-50%, -50%);
  transition: width 0.3s ease, height 0.3s ease, border-color 0.3s ease, background 0.3s ease;
  mix-blend-mode: difference;
}

.custom-cursor-dot {
  position: fixed;
  width: 4px;
  height: 4px;
  background: var(--text);
  border-radius: 50%;
  pointer-events: none;
  z-index: 10000;
  transform: translate(-50%, -50%);
}

body.cursor-hover .custom-cursor {
  width: 60px;
  height: 60px;
  border-color: var(--accent);
  background: rgba(212, 165, 116, 0.08);
}

/* ── WebGL Canvas ─────────────────────── */
#bg-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
}

/* ── Film Grain ───────────────────────── */
.grain {
  position: fixed;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  z-index: 1;
  pointer-events: none;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='1'/%3E%3C/svg%3E");
  background-size: 256px 256px;
}

/* ── Side Navigation ──────────────────── */
.side-nav {
  position: fixed;
  left: 2rem;
  top: 50%;
  transform: translateY(-50%);
  z-index: 100;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

.side-nav__line {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 1px;
  background: rgba(232, 228, 222, 0.1);
  left: 50%;
  transform: translateX(-50%);
}

.side-nav__dot {
  position: relative;
  z-index: 1;
  display: block;
  text-decoration: none;
}

.side-nav__dot span {
  display: block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: 1px solid rgba(232, 228, 222, 0.3);
  background: transparent;
  transition: all 0.4s ease;
}

.side-nav__dot.active span {
  background: var(--accent);
  border-color: var(--accent);
  box-shadow: 0 0 12px rgba(212, 165, 116, 0.3);
}

.side-nav__label {
  position: absolute;
  left: 2rem;
  top: 50%;
  transform: translateY(-50%) rotate(-90deg);
  transform-origin: left center;
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: rgba(232, 228, 222, 0.4);
  white-space: nowrap;
  transition: opacity 0.3s ease;
}

/* ── Section Base ─────────────────────── */
.section {
  position: relative;
  min-height: 100vh;
  padding: 15vh 8vw 15vh calc(6rem + 4vw);
  scroll-snap-align: start;
  z-index: 2;
}

.section__inner {
  position: relative;
  max-width: 1200px;
}

.section__number {
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: rgba(232, 228, 222, 0.3);
  margin-bottom: 3rem;
}

.section__watermark {
  position: absolute;
  top: -5vh;
  right: -2vw;
  font-family: var(--serif);
  font-size: 25vw;
  font-weight: 900;
  color: rgba(232, 228, 222, 0.015);
  line-height: 1;
  pointer-events: none;
  user-select: none;
}

.section__title {
  font-family: var(--serif);
  font-size: clamp(2rem, 5vw, 4rem);
  font-weight: 700;
  margin-bottom: 4rem;
}

/* ── Typography ───────────────────────── */
.mono {
  font-family: var(--mono);
  font-size: 0.8em;
  letter-spacing: 0.02em;
}

/* ── Hero ──────────────────────────────── */
.hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 0;
}

.hero__content {
  position: relative;
  z-index: 2;
}

.hero__name {
  font-family: var(--serif);
  font-size: clamp(3rem, 14vw, 15vw);
  font-weight: 900;
  line-height: 0.9;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
}

.hero__name .reveal-line {
  display: block;
}

.hero__subtitle {
  font-size: clamp(0.75rem, 1.2vw, 1rem);
  color: rgba(232, 228, 222, 0.6);
  letter-spacing: 0.1em;
}

.hero__divider {
  margin: 0 0.8em;
  color: var(--accent);
}

.scroll-indicator {
  position: absolute;
  bottom: 3rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: rgba(232, 228, 222, 0.3);
  z-index: 2;
}

.scroll-indicator .mono {
  font-size: 0.6rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
}

.scroll-indicator__line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, rgba(232,228,222,0.3), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 1; transform: scaleY(1); }
  50% { opacity: 0.3; transform: scaleY(0.6); }
}

/* ── About ────────────────────────────── */
.about__content {
  background: var(--panel);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(232, 228, 222, 0.05);
  padding: clamp(2rem, 5vw, 4rem);
  border-radius: 2px;
}

.about__text {
  font-size: clamp(1rem, 1.3vw, 1.15rem);
  line-height: 1.8;
  max-width: 700px;
  margin-bottom: 3rem;
}

.about__quote {
  font-family: var(--serif);
  font-style: italic;
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  line-height: 1.4;
  color: var(--accent);
  border-left: 2px solid rgba(212, 165, 116, 0.3);
  padding-left: 2rem;
  margin-bottom: 3rem;
}

.about__quote .reveal-line {
  display: block;
}

.about__skills {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.skill-group {
  display: flex;
  gap: 1.5rem;
  align-items: baseline;
  flex-wrap: wrap;
}

.skill-label {
  color: rgba(232, 228, 222, 0.4);
  min-width: 100px;
  font-size: 0.7rem !important;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* ── Experience ────────────────────────── */
.exp-row {
  position: relative;
  padding: 2.5rem 0;
  border-bottom: 1px solid rgba(232, 228, 222, 0.06);
  background: var(--panel);
  backdrop-filter: blur(10px);
  padding: 2.5rem clamp(1.5rem, 3vw, 3rem);
  margin-bottom: 1px;
  overflow: hidden;
}

.exp-row__bg-text {
  position: absolute;
  right: -1vw;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--serif);
  font-size: 8vw;
  font-weight: 900;
  color: rgba(232, 228, 222, 0.025);
  pointer-events: none;
  user-select: none;
  white-space: nowrap;
}

.exp-row__year {
  font-size: 0.7rem;
  color: rgba(232, 228, 222, 0.4);
  letter-spacing: 0.1em;
  display: block;
  margin-bottom: 0.5rem;
}

.exp-row__title {
  font-family: var(--serif);
  font-size: clamp(1.3rem, 2.5vw, 2rem);
  font-weight: 700;
  margin-bottom: 0.3rem;
}

.exp-row__company {
  color: var(--accent);
  font-size: 0.9rem;
  display: block;
  margin-bottom: 0.5rem;
}

.exp-row__desc {
  color: rgba(232, 228, 222, 0.5);
  font-size: 0.9rem;
  max-width: 500px;
}

/* ── Research ──────────────────────────── */
.research__hero {
  padding: 0 0 2rem 0;
  margin-bottom: 3rem;
}

.research__title {
  font-family: var(--serif);
  font-size: clamp(2rem, 6vw, 5rem);
  font-weight: 900;
  line-height: 1.05;
  margin-bottom: 2rem;
}

.research__title .reveal-line {
  display: block;
}

.research__summary {
  font-size: clamp(1rem, 1.3vw, 1.15rem);
  line-height: 1.8;
  max-width: 600px;
  color: rgba(232, 228, 222, 0.7);
}

.research__list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.research__item {
  display: flex;
  gap: 2rem;
  align-items: baseline;
  padding: 1.5rem 2rem;
  background: var(--panel);
  border: 1px solid rgba(232, 228, 222, 0.05);
  border-radius: 2px;
}

.research__item .mono {
  color: rgba(232, 228, 222, 0.4);
  flex-shrink: 0;
  font-size: 0.7rem;
}

/* ── Projects ─────────────────────────── */
.projects {
  padding-bottom: 5vh;
}

.projects__gallery {
  overflow: hidden;
  cursor: grab;
  position: relative;
  margin-left: calc(6rem + 4vw);
  margin-top: 2rem;
}

.projects__gallery:active {
  cursor: grabbing;
}

.projects__track {
  display: flex;
  gap: 1.5rem;
  padding-right: 30vw;
  will-change: transform;
}

.project-panel {
  flex-shrink: 0;
  width: clamp(280px, 35vw, 450px);
  height: 70vh;
  min-height: 500px;
  background: var(--panel);
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
  border: 1px solid rgba(232, 228, 222, 0.05);
  border-top: 2px solid var(--accent);
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  overflow: hidden;
  border-radius: 2px;
  transition: border-color 0.4s ease;
}

.project-panel:hover {
  border-top-color: var(--accent);
}

.project-panel__name {
  position: absolute;
  left: 1.2rem;
  top: 50%;
  transform: translateY(-50%) rotate(-90deg);
  transform-origin: center center;
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: rgba(232, 228, 222, 0.2);
  white-space: nowrap;
}

.project-panel__content {
  padding: 2.5rem;
  padding-left: 3.5rem;
}

.project-panel__content h3 {
  font-family: var(--serif);
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--text);
}

.project-panel__content h3 a {
  color: var(--text);
  text-decoration: none;
  transition: color 0.3s ease;
}

.project-panel__content h3 a:hover {
  color: var(--accent);
}

.project-panel__content p {
  font-size: 0.9rem;
  line-height: 1.7;
  color: rgba(232, 228, 222, 0.6);
  margin-bottom: 1.5rem;
}

.project-panel__content .mono {
  font-size: 0.65rem;
  color: var(--accent);
  letter-spacing: 0.08em;
}

/* ── Contact ──────────────────────────── */
.contact {
  display: flex;
  align-items: center;
}

.contact__content {
  background: var(--panel);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(232, 228, 222, 0.05);
  padding: clamp(3rem, 6vw, 6rem);
  border-radius: 2px;
}

.contact__title {
  font-family: var(--serif);
  font-size: clamp(3rem, 8vw, 7rem);
  font-weight: 900;
  line-height: 1;
  margin-bottom: 2rem;
}

.contact__email {
  display: inline-block;
  font-size: clamp(1rem, 2.5vw, 1.8rem);
  color: var(--accent);
  text-decoration: none;
  margin-bottom: 3rem;
  transition: color 0.3s ease;
  word-break: break-all;
}

.contact__email:hover {
  color: var(--text);
}

.contact__links {
  display: flex;
  gap: 2.5rem;
}

.text-link {
  font-family: var(--sans);
  font-size: 1rem;
  color: var(--text);
  text-decoration: none;
  position: relative;
}

.text-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--accent);
  transition: width 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.text-link:hover::after {
  width: 100%;
}

/* ── Footer ───────────────────────────── */
.footer {
  padding: 2rem 0 2rem calc(6rem + 4vw);
  z-index: 2;
  position: relative;
}

.footer .mono {
  font-size: 0.65rem;
  color: rgba(232, 228, 222, 0.25);
  letter-spacing: 0.1em;
}

/* ── Reveal Animations ────────────────── */
.reveal-line {
  display: inline-block;
  clip-path: inset(0 0 100% 0);
  transition: clip-path 0.8s cubic-bezier(0.77, 0, 0.175, 1);
}

.reveal-text.revealed .reveal-line {
  clip-path: inset(0 0 0% 0);
}

.reveal-text.revealed .reveal-line:nth-child(2) { transition-delay: 0.1s; }
.reveal-text.revealed .reveal-line:nth-child(3) { transition-delay: 0.2s; }
.reveal-text.revealed .reveal-line:nth-child(4) { transition-delay: 0.3s; }

.reveal-fade {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

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

/* ── Reduced Motion ───────────────────── */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal-line { clip-path: none !important; transition: none !important; }
  .reveal-fade { opacity: 1 !important; transform: none !important; transition: none !important; }
  .scroll-indicator__line { animation: none; }
  #bg-canvas { display: none; }
  body { background: linear-gradient(135deg, #0a0a1a 0%, #1a1a2e 50%, #0a0a1a 100%); }
}

/* ── Mobile ───────────────────────────── */
@media (max-width: 768px) {
  html { scroll-snap-type: none; }

  .side-nav { display: none; }

  .section {
    padding: 10vh 6vw;
  }

  .hero__name {
    font-size: clamp(2.5rem, 18vw, 8rem);
  }

  .custom-cursor, .custom-cursor-dot { display: none; }
  body { cursor: auto; }

  .exp-row__bg-text { font-size: 15vw; }

  .section__watermark { font-size: 40vw; }

  .projects__gallery {
    margin-left: 0;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    padding: 0 6vw;
  }

  .projects__track {
    flex-direction: column;
    padding-right: 0;
  }

  .project-panel {
    width: 100%;
    height: auto;
    min-height: 350px;
  }

  .contact__links {
    flex-direction: column;
    gap: 1.5rem;
  }

  .research__item {
    flex-direction: column;
    gap: 0.5rem;
  }

  .skill-group {
    flex-direction: column;
    gap: 0.3rem;
  }
}

@media (max-width: 480px) {
  .hero__subtitle {
    flex-direction: column;
  }
  .hero__divider { display: none; }
  .hero__subtitle .mono { display: block; margin-bottom: 0.3rem; }
}