/* ===== DESIGN TOKENS ===== */
:root {
  /* Type Scale */
  --text-xs:   clamp(0.75rem,  0.7rem  + 0.25vw, 0.875rem);
  --text-sm:   clamp(0.875rem, 0.8rem  + 0.35vw, 1rem);
  --text-base: clamp(1rem,     0.95rem + 0.25vw, 1.125rem);
  --text-lg:   clamp(1.125rem, 1rem    + 0.75vw, 1.5rem);
  --text-xl:   clamp(1.5rem,   1.2rem  + 1.25vw, 2.25rem);
  --text-2xl:  clamp(2rem,     1.2rem  + 2.5vw,  3.5rem);
  --text-3xl:  clamp(2.5rem,   1rem    + 4vw,    5rem);
  --text-hero: clamp(3rem,     0.5rem  + 7vw,    8rem);

  /* Spacing */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);

  /* Content widths */
  --content-narrow: 640px;
  --content-default: 960px;
  --content-wide: 1200px;

  /* Fonts */
  --font-display: 'Cabinet Grotesk', 'Helvetica Neue', sans-serif;
  --font-body: 'Satoshi', 'Inter', sans-serif;
}

/* ===== CUSTOM PALETTE — Dark abstract tech ===== */
:root, [data-theme="dark"] {
  --color-bg:             #0a0a0f;
  --color-surface:        #111118;
  --color-surface-2:      #181822;
  --color-surface-offset: #0e0e15;
  --color-border:         #2a2a3a;
  --color-divider:        #1e1e2e;

  --color-text:           #e8e6f0;
  --color-text-muted:     #8a889a;
  --color-text-faint:     #4e4c5e;
  --color-text-inverse:   #0a0a0f;

  --color-primary:        #6c5ce7;
  --color-primary-hover:  #8677ed;
  --color-primary-active: #5a4bd6;
  --color-primary-glow:   rgba(108, 92, 231, 0.15);

  --color-accent:         #00d2ff;
  --color-accent-2:       #a855f7;
  --color-accent-3:       #f472b6;

  --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.4);
  --shadow-lg: 0 12px 32px rgba(0,0,0,0.5);
}

[data-theme="light"] {
  --color-bg:             #f5f3ff;
  --color-surface:        #ffffff;
  --color-surface-2:      #ede9fe;
  --color-surface-offset: #e8e4f8;
  --color-border:         #c4b5fd;
  --color-divider:        #ddd6fe;

  --color-text:           #1e1b4b;
  --color-text-muted:     #6b6794;
  --color-text-faint:     #a5a0c8;
  --color-text-inverse:   #f5f3ff;

  --color-primary:        #6c5ce7;
  --color-primary-hover:  #5a4bd6;
  --color-primary-active: #4c3ecf;
  --color-primary-glow:   rgba(108, 92, 231, 0.1);

  --color-accent:         #0091b3;
  --color-accent-2:       #7c3aed;
  --color-accent-3:       #db2777;

  --shadow-sm: 0 1px 3px rgba(30,27,75,0.06);
  --shadow-md: 0 4px 12px rgba(30,27,75,0.08);
  --shadow-lg: 0 12px 32px rgba(30,27,75,0.12);
}

/* ===== GLOBAL STYLES ===== */
body {
  overflow-x: hidden;
}

/* ===== HEADER ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: var(--space-5) clamp(var(--space-6), 5vw, var(--space-16));
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: transparent;
  transition: background 0.4s ease, backdrop-filter 0.4s ease;
}

.site-header.scrolled {
  background: oklch(from var(--color-bg) l c h / 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.logo-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-text);
}

.logo-mark {
  width: 40px;
  height: 40px;
}

.logo-text {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.theme-toggle {
  color: var(--color-text-muted);
  padding: var(--space-2);
  border-radius: var(--radius-full);
  transition: color var(--transition-interactive), background var(--transition-interactive);
}

.theme-toggle:hover {
  color: var(--color-text);
  background: var(--color-primary-glow);
}

/* ===== HERO ===== */
.hero {
  position: relative;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  z-index: 2;
  background: radial-gradient(
    ellipse at center,
    transparent 0%,
    oklch(from var(--color-bg) l c h / 0.3) 50%,
    oklch(from var(--color-bg) l c h / 0.7) 80%,
    var(--color-bg) 100%
  );
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 3;
  text-align: center;
  padding: var(--space-8);
  max-width: 900px;
}

.hero-tagline {
  font-family: var(--font-display);
  font-size: var(--text-hero);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--color-text);
  margin-bottom: var(--space-6);
  opacity: 0;
  animation: fadeUp 1s var(--ease-out) 0.3s forwards;
}

.hero-tagline .gradient-text {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 50%, var(--color-accent-2) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 540px;
  margin: 0 auto;
  opacity: 0;
  animation: fadeUp 1s var(--ease-out) 0.6s forwards;
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===== ABSTRACT SECTION DIVIDER ===== */
.section-divider {
  width: 100%;
  height: 200px;
  position: relative;
  overflow: hidden;
}

.section-divider canvas {
  width: 100%;
  height: 100%;
}

/* ===== ABOUT SECTION ===== */
.about {
  position: relative;
  padding: clamp(var(--space-16), 10vw, var(--space-32)) clamp(var(--space-6), 5vw, var(--space-16));
  overflow: hidden;
}

.about-inner {
  max-width: var(--content-default);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(var(--space-8), 5vw, var(--space-16));
  align-items: center;
}

.about-visual {
  position: relative;
  aspect-ratio: 1;
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.about-visual canvas {
  width: 100%;
  height: 100%;
}

.about-text {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.section-label {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-primary);
}

.section-heading {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.1;
}

.section-body {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ===== FLOATING SHAPES (abstract ambient) ===== */
.floating-shapes {
  position: relative;
  padding: clamp(var(--space-16), 8vw, var(--space-24)) clamp(var(--space-6), 5vw, var(--space-16));
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 50vh;
  overflow: hidden;
}

.shapes-canvas {
  position: absolute;
  inset: 0;
  z-index: 1;
}

.shapes-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 700px;
}

.shapes-content .section-heading {
  margin-bottom: var(--space-4);
}

/* ===== CONTACT / FOOTER ===== */
.contact {
  position: relative;
  padding: clamp(var(--space-16), 8vw, var(--space-24)) clamp(var(--space-6), 5vw, var(--space-16));
  border-top: 1px solid var(--color-divider);
}

.contact-inner {
  max-width: var(--content-default);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(var(--space-8), 5vw, var(--space-16));
  align-items: start;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.contact-info .section-heading {
  font-size: var(--text-xl);
  margin-bottom: var(--space-2);
}

.contact-detail {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  line-height: 1.6;
}

.contact-detail svg {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  margin-top: 2px;
  color: var(--color-primary);
}

.contact-detail a {
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition-interactive);
}

.contact-detail a:hover {
  color: var(--color-primary);
}

.contact-visual {
  position: relative;
  aspect-ratio: 16/10;
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.contact-visual canvas {
  width: 100%;
  height: 100%;
}

/* ===== FOOTER ===== */
.site-footer {
  padding: var(--space-8) clamp(var(--space-6), 5vw, var(--space-16));
  border-top: 1px solid var(--color-divider);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer-copy {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

.footer-links {
  display: flex;
  gap: var(--space-6);
}

.footer-links a {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-decoration: none;
  transition: color var(--transition-interactive);
}

.footer-links a:hover {
  color: var(--color-text-muted);
}

/* ===== SCROLL REVEALS ===== */
.reveal {
  opacity: 1;
}

@supports (animation-timeline: scroll()) {
  .reveal {
    opacity: 0;
    animation: revealFade linear both;
    animation-timeline: view();
    animation-range: entry 0% entry 80%;
  }
}

@keyframes revealFade {
  to { opacity: 1; }
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .about-inner {
    grid-template-columns: 1fr;
  }

  .about-visual {
    max-height: 360px;
  }

  .contact-inner {
    grid-template-columns: 1fr;
  }

  .contact-visual {
    max-height: 240px;
  }

  .hero-tagline {
    font-size: var(--text-3xl);
  }

  .logo-text {
    font-size: var(--text-sm);
  }
}

@media (max-width: 480px) {
  .site-footer {
    flex-direction: column;
    align-items: flex-start;
  }
}