/* ============================================================
   SoftUniSource — Premium Design System v2.0
   Typography: Space Grotesk (display) + Instrument Sans (body) + JetBrains Mono (code)
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Instrument+Sans:ital,wght@0,400;0,500;0,600;0,700&family=JetBrains+Mono:wght@400;500;600;700&display=swap');

:root {
  /* ── Color Tokens (Preserved Palette) ── */
  --color-navy:       #0A0F1D;
  --color-navy-card:  #13192B;
  --color-navy-mid:   #0E1428;
  --color-flame:      #FF3B00;
  --color-flame-hover:#E03400;
  --color-cyan:       #00E5FF;

  --color-paper:      #F8F9FA;
  --color-card:       #FFFFFF;
  --color-border:     #E2E8F0;

  --color-ink:        #0F172A;
  --color-slate:      #475569;
  --color-muted:      #94A3B8;

  /* ── Typography ── */
  --font-display: 'Space Grotesk', system-ui, -apple-system, sans-serif;
  --font-sans:    'Instrument Sans', system-ui, -apple-system, sans-serif;
  --font-mono:    'JetBrains Mono', 'Fira Code', monospace;

  /* ── Spacing & Layout ── */
  --container-narrow: 1100px;
  --container-default: 1320px;
  --container-wide:   1440px;

  /* ── Motion ── */
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out-quart: cubic-bezier(0.25, 1, 0.5, 1);

  /* ── Mouse tracking ── */
  --mouse-x: 50%;
  --mouse-y: 50%;
}

/* ============================================================
   BASE
   ============================================================ */
html {
  scroll-behavior: auto;
  background-color: var(--color-paper);
  color: var(--color-ink);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: 'cv02', 'cv03', 'cv04', 'cv11';
}

body {
  margin: 0;
  padding: 0;
  background-color: var(--color-paper);
  color: var(--color-ink);
  overflow-x: hidden;
  line-height: 1.65;
}

/* ============================================================
   TYPOGRAPHY SYSTEM
   ============================================================ */
.font-display {
  font-family: var(--font-display);
  letter-spacing: -0.04em;
}

.font-body {
  font-family: var(--font-sans);
  letter-spacing: -0.01em;
}

.font-mono {
  font-family: var(--font-mono);
  letter-spacing: -0.02em;
}

/* Hero display — massive, tight tracking */
.text-display-hero {
  font-family: var(--font-display);
  font-size: clamp(3rem, 6.5vw, 5.5rem);
  line-height: 1.05;
  letter-spacing: -0.05em;
  font-weight: 700;
}

/* Section headings */
.text-section-heading {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.5rem);
  line-height: 1.1;
  letter-spacing: -0.04em;
  font-weight: 700;
  color: var(--color-ink);
}

/* Eyebrow labels */
.text-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-cyan);
}

/* Large body text */
.text-body-large {
  font-family: var(--font-sans);
  font-size: 1.125rem;
  line-height: 1.7;
  color: var(--color-muted);
  letter-spacing: -0.01em;
}

/* ============================================================
   COLOR UTILITIES
   ============================================================ */
.bg-navy       { background-color: var(--color-navy); }
.bg-navy-card  { background-color: var(--color-navy-card); }
.bg-flame      { background-color: var(--color-flame); }
.bg-paper      { background-color: var(--color-paper); }
.bg-card       { background-color: var(--color-card); }

.text-flame    { color: var(--color-flame); }
.text-cyan     { color: var(--color-cyan); }
.text-navy     { color: var(--color-navy); }

/* ============================================================
   BUTTONS
   ============================================================ */
.btn-flame, .btn-signal {
  background-color: var(--color-flame);
  color: #FFFFFF;
  font-family: var(--font-sans);
  font-weight: 600;
  letter-spacing: 0.04em;
  transition: all 0.4s var(--ease-out-expo);
  box-shadow:
    0 1px 2px rgba(255, 59, 0, 0.2),
    0 4px 12px rgba(255, 59, 0, 0.15);
  border: none;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.btn-flame::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.15) 0%, transparent 50%);
  opacity: 0;
  transition: opacity 0.4s var(--ease-out-expo);
}

.btn-flame:hover, .btn-signal:hover {
  background-color: var(--color-flame-hover);
  transform: translateY(-2px);
  box-shadow:
    0 4px 8px rgba(255, 59, 0, 0.2),
    0 12px 32px rgba(255, 59, 0, 0.25);
}

.btn-flame:hover::before {
  opacity: 1;
}

.btn-flame:active {
  transform: translateY(0px);
  transition-duration: 0.1s;
}

.btn-outline {
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #FFFFFF;
  background-color: transparent;
  font-family: var(--font-sans);
  font-weight: 500;
  transition: all 0.35s var(--ease-out-expo);
  cursor: pointer;
}

.btn-outline:hover {
  background-color: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.3);
  transform: translateY(-1px);
}

/* Ghost button for light backgrounds */
.btn-ghost {
  border: 1.5px solid var(--color-border);
  color: var(--color-ink);
  background-color: transparent;
  font-family: var(--font-sans);
  font-weight: 600;
  transition: all 0.35s var(--ease-out-expo);
  cursor: pointer;
}

.btn-ghost:hover {
  border-color: var(--color-ink);
  background-color: var(--color-ink);
  color: #FFFFFF;
  transform: translateY(-1px);
}

/* ============================================================
   GLASSMORPHISM & DEPTH
   ============================================================ */
.glass-panel {
  background: rgba(10, 15, 29, 0.55);
  backdrop-filter: blur(20px) saturate(1.4);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: 20px;
}

.glass-panel-light {
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(20px) saturate(1.2);
  -webkit-backdrop-filter: blur(20px) saturate(1.2);
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: 20px;
}

/* ============================================================
   CARDS
   ============================================================ */

/* Elevated card — multi-layer shadow for true depth */
.card-elevated {
  background-color: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: 20px;
  transition: all 0.5s var(--ease-out-expo);
  box-shadow:
    0 1px 2px rgba(0,0,0,0.04),
    0 4px 8px rgba(0,0,0,0.03),
    0 12px 24px rgba(0,0,0,0.03);
}

.card-elevated:hover {
  transform: translateY(-6px);
  border-color: rgba(0, 229, 255, 0.2);
  box-shadow:
    0 2px 4px rgba(0,0,0,0.04),
    0 8px 16px rgba(0,0,0,0.06),
    0 24px 48px rgba(0,0,0,0.06);
}

/* Standard hover card (kept for compatibility) */
.card-hover {
  background-color: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: 20px;
  transition: all 0.5s var(--ease-out-expo);
  box-shadow: 0 1px 3px rgba(0,0,0,0.03);
}

.card-hover:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 229, 255, 0.3);
  box-shadow:
    0 8px 16px rgba(0,0,0,0.04),
    0 20px 40px rgba(0,0,0,0.06);
}

/* Dark card */
.card-dark {
  background-color: var(--color-navy-card);
  color: #FFFFFF;
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 20px;
  transition: all 0.5s var(--ease-out-expo);
}

.card-dark:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 229, 255, 0.2);
  box-shadow:
    0 8px 16px rgba(0,0,0,0.2),
    0 24px 48px rgba(0,0,0,0.25);
}

/* Flame top border accent */
.flame-top-border {
  border-top: 3px solid var(--color-flame);
}

/* ============================================================
   SECTION DIVIDERS
   ============================================================ */
.divider-curve {
  position: relative;
}

.divider-curve::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  height: 80px;
  background: var(--color-paper);
  clip-path: ellipse(55% 100% at 50% 100%);
  z-index: 2;
}

.divider-curve-dark::after {
  background: var(--color-navy);
}

.divider-curve-white::after {
  background: #FFFFFF;
}

/* Diagonal divider */
.divider-diagonal {
  position: relative;
}

.divider-diagonal::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  height: 60px;
  background: inherit;
  clip-path: polygon(0 60%, 100% 0%, 100% 100%, 0% 100%);
  z-index: 2;
}

/* Section overlap utility */
.section-overlap {
  position: relative;
  z-index: 5;
  margin-top: -50px;
}

/* ============================================================
   HERO SPECIFIC
   ============================================================ */
.hero-canvas-container {
  position: absolute;
  inset: 0;
  z-index: 1;
  overflow: hidden;
}

.hero-canvas-container canvas {
  width: 100%;
  height: 100%;
  display: block;
}

/* Stats bar glass overlay */
.hero-stats-bar {
  position: relative;
  z-index: 10;
  margin-top: -44px;
}

/* ============================================================
   FLAME BANNER (full-width accent)
   ============================================================ */
.flame-banner {
  background: linear-gradient(135deg, #FF3B00 0%, #FF5500 50%, #FF3B00 100%);
  background-size: 200% 100%;
  color: #FFFFFF;
  position: relative;
  overflow: hidden;
}

.flame-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='40' height='40' viewBox='0 0 40 40' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%23ffffff' fill-opacity='0.04'%3E%3Ccircle cx='20' cy='20' r='1'/%3E%3C/g%3E%3C/svg%3E");
  pointer-events: none;
}

/* ============================================================
   PROCESS STEPS
   ============================================================ */
.step-circle {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background-color: var(--color-navy);
  border: 2px solid rgba(0, 229, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--color-cyan);
  box-shadow:
    0 4px 12px rgba(0, 0, 0, 0.1),
    0 0 0 4px rgba(0, 229, 255, 0.05);
  transition: all 0.5s var(--ease-out-expo);
}

.step-circle:hover,
.group:hover .step-circle {
  background-color: var(--color-flame);
  border-color: var(--color-flame);
  color: #FFFFFF;
  box-shadow:
    0 4px 12px rgba(255, 59, 0, 0.2),
    0 0 0 4px rgba(255, 59, 0, 0.1);
}

/* ============================================================
   DIAMOND PHOTO GRID (preserved)
   ============================================================ */
.diamond-wrapper {
  position: relative;
  width: 340px;
  height: 340px;
  margin: 40px auto;
}

.diamond-grid {
  width: 100%;
  height: 100%;
  transform: rotate(45deg);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  overflow: hidden;
  border-radius: 24px;
}

.diamond-tile {
  overflow: hidden;
  position: relative;
  background-color: #0A0F1D;
}

.diamond-img {
  width: 140%;
  height: 140%;
  object-fit: cover;
  position: absolute;
  top: -20%;
  left: -20%;
  transform: rotate(-45deg);
  transition: transform 0.6s var(--ease-out-expo);
}

.diamond-tile:hover .diamond-img {
  transform: rotate(-45deg) scale(1.05);
}

.flame-corner-bracket-left {
  position: absolute;
  top: 50%;
  left: -24px;
  transform: translateY(-50%);
  width: 48px;
  height: 96px;
  border-left: 3px solid var(--color-cyan);
  border-top: 3px solid var(--color-cyan);
  border-bottom: 3px solid var(--color-cyan);
  border-radius: 16px 0 0 16px;
  pointer-events: none;
  opacity: 0.5;
}

.flame-corner-bracket-right {
  position: absolute;
  top: 50%;
  right: -24px;
  transform: translateY(-50%);
  width: 48px;
  height: 96px;
  border-right: 3px solid var(--color-cyan);
  border-top: 3px solid var(--color-cyan);
  border-bottom: 3px solid var(--color-cyan);
  border-radius: 0 16px 16px 0;
  pointer-events: none;
  opacity: 0.5;
}

/* ============================================================
   SCROLL REVEAL ANIMATIONS
   ============================================================ */
.reveal-up {
  opacity: 0;
  transform: translateY(40px);
  transition: all 0.8s var(--ease-out-expo);
}

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

.reveal-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: all 0.8s var(--ease-out-expo);
}

.reveal-left.is-visible {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(40px);
  transition: all 0.8s var(--ease-out-expo);
}

.reveal-right.is-visible {
  opacity: 1;
  transform: translateX(0);
}

.reveal-scale {
  opacity: 0;
  transform: scale(0.92);
  transition: all 0.8s var(--ease-out-expo);
}

.reveal-scale.is-visible {
  opacity: 1;
  transform: scale(1);
}

/* Stagger delays */
.stagger-1 { transition-delay: 0.05s; }
.stagger-2 { transition-delay: 0.1s; }
.stagger-3 { transition-delay: 0.15s; }
.stagger-4 { transition-delay: 0.2s; }
.stagger-5 { transition-delay: 0.25s; }
.stagger-6 { transition-delay: 0.3s; }

/* ============================================================
   MARQUEE
   ============================================================ */
@keyframes marquee {
  0%   { transform: translateX(0%); }
  100% { transform: translateX(-50%); }
}

.animate-marquee {
  display: flex;
  width: max-content;
  animation: marquee 45s linear infinite;
}

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

/* ============================================================
   NOISE TEXTURE OVERLAY
   ============================================================ */
.noise-overlay::before {
  content: '';
  position: absolute;
  inset: 0;
  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='0.03'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 0;
}

/* Grid background pattern */
.grid-bg-pattern {
  background-image:
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 60px 60px;
}

/* ============================================================
   CUSTOM SCROLLBAR
   ============================================================ */
::-webkit-scrollbar {
  width: 6px;
}
::-webkit-scrollbar-track {
  background: var(--color-navy);
}
::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.15);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.25);
}

/* ============================================================
   FOCUS & ACCESSIBILITY
   ============================================================ */
*:focus-visible {
  outline: 2px solid var(--color-cyan);
  outline-offset: 3px;
}

::selection {
  background-color: var(--color-flame);
  color: #FFFFFF;
}

/* ============================================================
   MODAL
   ============================================================ */
.modal-backdrop {
  background-color: rgba(10, 15, 29, 0.8);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

/* ============================================================
   RESPONSIVE REFINEMENTS
   ============================================================ */
@media (max-width: 768px) {
  .text-display-hero {
    font-size: clamp(2.25rem, 8vw, 3.5rem);
    letter-spacing: -0.04em;
  }

  .text-section-heading {
    font-size: clamp(1.75rem, 6vw, 2.5rem);
  }

  .hero-stats-bar {
    margin-top: -24px;
  }

  .diamond-wrapper {
    width: 260px;
    height: 260px;
  }

  .step-circle {
    width: 64px;
    height: 64px;
    font-size: 1rem;
  }
}

@media (max-width: 480px) {
  .text-display-hero {
    font-size: 2rem;
  }
}

/* ============================================================
   SCROLLABLE PROJECT BROWSER MOCKUP CARDS
   ============================================================ */
.project-card {
  transition: transform 0.4s var(--ease-out-expo), box-shadow 0.4s var(--ease-out-expo), border-color 0.4s ease;
}

.project-card:hover {
  transform: translateY(-6px);
  border-color: rgba(255, 59, 0, 0.4);
  box-shadow: 0 20px 40px -15px rgba(255, 59, 0, 0.2), 0 0 30px rgba(0, 0, 0, 0.5);
}

.project-browser-frame {
  position: relative;
  border-radius: 16px;
  background: #0E1428;
  border: 1px solid rgba(255, 255, 255, 0.12);
  overflow: hidden;
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.35);
}

.project-browser-header {
  height: 40px;
  background: #131A2E;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  padding: 0 16px;
  gap: 8px;
}

.browser-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
}

.browser-url-bar {
  flex: 1;
  margin-left: 8px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 8px;
  height: 24px;
  display: flex;
  align-items: center;
  padding: 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: #94A3B8;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.project-scroll-viewport {
  position: relative;
  height: 440px;
  overflow: hidden;
  background: #0A0F1D;
  cursor: pointer;
}

.project-scroll-viewport img {
  width: 100%;
  height: auto;
  min-height: 100%;
  display: block;
  object-fit: cover;
  object-position: top center;
  transition: transform 7s cubic-bezier(0.25, 1, 0.5, 1);
  transform: translateY(0);
}

/* On hover, scroll the image down smoothly */
.project-card:hover .project-scroll-viewport img {
  transform: translateY(calc(-100% + 440px));
}

/* Hover overlay tooltip indicator */
.project-scroll-hint {
  position: absolute;
  bottom: 14px;
  right: 14px;
  background: rgba(10, 15, 29, 0.85);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #00E5FF;
  font-family: var(--font-mono);
  font-size: 10px;
  padding: 4px 10px;
  border-radius: 20px;
  pointer-events: none;
  transition: opacity 0.3s ease;
  display: flex;
  align-items: center;
  gap: 6px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}

.project-card:hover .project-scroll-hint {
  opacity: 0;
}