/* ============================================================
   BASE.CSS — INGCO Forge + Blueprint Hybrid Design System
   Reset · Body · Utilities · GSAP States · Scrollbar
   ============================================================ */

/* ── Custom Properties ──────────────────────────────────────── */
:root {
  /* Colors */
  --c-base:            #0F0D0A;
  --c-surface:         #1A1712;
  --c-surface-2:       #242018;
  --c-border:          #2E2920;
  --c-brand:           #FF9900;
  --c-brand-dim:       #CC7A00;
  --c-brand-glow:      rgba(255, 153, 0, 0.18);
  --c-text-primary:    #F0EDE8;
  --c-text-secondary:  #9A9080;
  --c-text-muted:      #5A5248;
  --c-success:         #3DBE6C;
  --c-error:           #E84545;

  /* Shadows */
  --shadow-card:       0 2px 8px rgba(0,0,0,0.4), 0 0 0 1px var(--c-border);
  --shadow-glow-lg:    0 0 40px rgba(255,153,0,0.35), 0 0 80px rgba(255,153,0,0.15);
  --shadow-brand:      0 0 12px rgba(255,153,0,0.4);

  /* Typography */
  --font-display: 'Bebas Neue', 'Arial Narrow', Impact, sans-serif;
  --font-ui:      'Barlow Condensed', 'Arial Narrow', sans-serif;
  --font-body:    'DM Sans', system-ui, -apple-system, sans-serif;

  /* Type scale */
  --text-hero:   clamp(3.5rem, 8vw, 7rem);
  --text-h1:     clamp(2rem, 4vw, 3.5rem);
  --text-h2:     clamp(1.5rem, 3vw, 2.5rem);
  --text-h3:     clamp(1.1rem, 2vw, 1.5rem);
  --text-body:   1rem;
  --text-small:  0.85rem;
  --text-label:  0.75rem;
  --text-xs:     0.65rem;

  /* Spacing */
  --space-xs:  0.25rem;
  --space-sm:  0.5rem;
  --space-md:  1rem;
  --space-lg:  2rem;
  --space-xl:  4rem;

  /* Layout */
  --max-width:     1280px;
  --header-height: 72px;
  --radius-sm:     2px;
  --radius-md:     4px;
  --radius-lg:     8px;

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-base: 0.2s ease;
  --transition-slow: 0.3s ease;
}

/* ── Box-Sizing Reset ───────────────────────────────────────── */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* ── HTML & Body ────────────────────────────────────────────── */
html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  background-color: var(--c-base) !important;
  color: var(--c-text-primary);
  font-family: var(--font-body);
  font-size: var(--text-body);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* ── Gear Texture Background ────────────────────────────────── */
.gear-texture {
  background-image:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='80' height='80' viewBox='0 0 80 80'%3E%3Ccircle cx='40' cy='40' r='15' fill='none' stroke='%23FF9900' stroke-width='1' opacity='0.05'/%3E%3Ccircle cx='40' cy='40' r='25' fill='none' stroke='%23FF9900' stroke-width='0.5' opacity='0.03'/%3E%3C/svg%3E");
  background-size: 80px 80px;
  background-repeat: repeat;
}

/* ── Scrollbar ──────────────────────────────────────────────── */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: var(--c-base);
}
::-webkit-scrollbar-thumb {
  background: var(--c-border);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--c-text-muted);
}
* {
  scrollbar-width: thin;
  scrollbar-color: var(--c-border) var(--c-base);
}

/* ── Canvas Background ──────────────────────────────────────── */
#bg-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
}

/* ── Selection ──────────────────────────────────────────────── */
::selection {
  background: var(--c-brand-glow);
  color: var(--c-base);
}
::-moz-selection {
  background: var(--c-brand-glow);
  color: var(--c-base);
}

/* ── Links ──────────────────────────────────────────────────── */
a {
  color: var(--c-brand);
  text-decoration: none;
  transition: color var(--transition-base);
}
a:hover {
  color: var(--c-brand-dim);
}

/* ── Focus Visible ──────────────────────────────────────────── */
:focus-visible {
  outline: 2px solid var(--c-brand);
  outline-offset: 2px;
}

/* ── Typography Base ────────────────────────────────────────── */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  line-height: 1.1;
  color: var(--c-text-primary);
  letter-spacing: 0.02em;
}

h1 { font-size: var(--text-h1); }
h2 { font-size: var(--text-h2); }
h3 { font-size: var(--text-h3); }

p {
  color: var(--c-text-secondary);
  line-height: 1.7;
}

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

/* ── Container ──────────────────────────────────────────────── */
.container {
  max-width: var(--max-width);
  width: 100%;
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2rem);
}

/* ── Skip Link (Accessibility) ──────────────────────────────── */
.skip-link {
  position: absolute;
  top: -100%;
  left: 0;
  background: var(--c-brand);
  color: #000;
  font-family: var(--font-ui);
  font-weight: 700;
  padding: 12px 24px;
  z-index: 9999;
  text-decoration: none;
  transition: top 0.2s;
}
.skip-link:focus {
  top: 0;
}

/* ── Utility: Text Colors ───────────────────────────────────── */
.text-brand     { color: var(--c-brand); }
.text-primary   { color: var(--c-text-primary); }
.text-secondary { color: var(--c-text-secondary); }
.text-muted     { color: var(--c-text-muted); }
.text-success   { color: var(--c-success); }
.text-error     { color: var(--c-error); }

/* ── Utility: Display ───────────────────────────────────────── */
.d-flex        { display: flex; }
.d-grid        { display: grid; }
.d-block       { display: block; }
.d-inline      { display: inline; }
.d-inline-flex { display: inline-flex; }
.d-none        { display: none; }

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}
.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.flex-col  { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.align-center { align-items: center; }
.gap-sm { gap: 0.5rem; }
.gap-md { gap: 1rem; }
.gap-lg { gap: 2rem; }

/* ── Utility: Spacing ───────────────────────────────────────── */
.mt-0 { margin-top: 0; }
.mt-sm { margin-top: 0.5rem; }
.mt-md { margin-top: 1rem; }
.mt-lg { margin-top: 2rem; }
.mt-xl { margin-top: 4rem; }
.mb-0 { margin-bottom: 0; }
.mb-sm { margin-bottom: 0.5rem; }
.mb-md { margin-bottom: 1rem; }
.mb-lg { margin-bottom: 2rem; }
.mb-xl { margin-bottom: 4rem; }
.py-md { padding-block: 1rem; }
.py-lg { padding-block: 2rem; }
.py-xl { padding-block: 4rem; }
.px-md { padding-inline: 1rem; }

/* ── Utility: Text ──────────────────────────────────────────── */
.text-center  { text-align: center; }
.text-right   { text-align: right; }
.text-upper   { text-transform: uppercase; }
.text-bold    { font-weight: 700; }
.font-display { font-family: var(--font-display); }
.font-ui      { font-family: var(--font-ui); }
.font-body    { font-family: var(--font-body); }
.ls-wide      { letter-spacing: 0.1em; }
.ls-wider     { letter-spacing: 0.15em; }

/* ── Utility: Visibility ────────────────────────────────────── */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

.visually-hidden {
  visibility: hidden;
  pointer-events: none;
}

/* ── Divider ────────────────────────────────────────────────── */
.divider {
  border: none;
  border-top: 1px solid var(--c-border);
  margin-block: 2rem;
}

/* ── Section Heading ────────────────────────────────────────── */
.section-heading {
  font-family: var(--font-display);
  font-size: var(--text-h1);
  color: var(--c-text-primary);
  letter-spacing: 0.03em;
  margin-bottom: 0.5rem;
}
.section-subheading {
  font-family: var(--font-ui);
  font-size: var(--text-body);
  color: var(--c-text-secondary);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 2rem;
}

/* ── Buttons ────────────────────────────────────────────────── */
.btn-primary {
  background: var(--c-brand);
  color: #000;
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: var(--text-body);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: background var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
  text-decoration: none;
  line-height: 1;
  white-space: nowrap;
}
.btn-primary:hover {
  background: var(--c-brand-dim);
  color: #000;
  transform: translateY(-1px);
  box-shadow: var(--shadow-glow-lg);
}
.btn-primary:active {
  transform: translateY(0);
}

.btn-outline {
  background: transparent;
  color: var(--c-brand);
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: var(--text-body);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  border: 2px solid var(--c-brand);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: background var(--transition-base), color var(--transition-base), transform var(--transition-base);
  text-decoration: none;
  line-height: 1;
  white-space: nowrap;
}
.btn-outline:hover {
  background: var(--c-brand);
  color: #000;
  transform: translateY(-1px);
}
.btn-outline:active {
  transform: translateY(0);
}

.btn-ghost {
  background: transparent;
  color: var(--c-text-secondary);
  font-family: var(--font-ui);
  font-weight: 600;
  font-size: var(--text-small);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--c-border);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: color var(--transition-base), border-color var(--transition-base), background var(--transition-base);
  text-decoration: none;
  line-height: 1;
}
.btn-ghost:hover {
  color: var(--c-brand);
  border-color: var(--c-brand);
  background: var(--c-surface);
}

.btn-sm {
  padding: 8px 16px;
  font-size: var(--text-small);
}
.btn-lg {
  padding: 16px 32px;
  font-size: 1.1rem;
}

/* ── Badge ──────────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  background: var(--c-brand);
  color: #000;
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  line-height: 1.4;
}
.badge-outline {
  background: transparent;
  border: 1px solid var(--c-brand);
  color: var(--c-brand);
}
.badge-surface {
  background: var(--c-surface-2);
  border: 1px solid var(--c-border);
  color: var(--c-text-secondary);
}

/* ── Card Base ──────────────────────────────────────────────── */
.card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  padding: 1.5rem;
}

/* ── Tag / Pill ─────────────────────────────────────────────── */
.tag {
  display: inline-block;
  background: var(--c-surface-2);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-sm);
  padding: 4px 10px;
  font-family: var(--font-ui);
  font-size: var(--text-label);
  color: var(--c-text-secondary);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* ── Icon Button ────────────────────────────────────────────── */
.icon-btn {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--c-text-secondary);
  padding: 8px;
  border-radius: var(--radius-md);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: color var(--transition-base), background var(--transition-base);
  min-width: 44px;
  min-height: 44px;
}
.icon-btn:hover {
  color: var(--c-brand);
  background: var(--c-surface);
}

/* ── Section Block ──────────────────────────────────────────── */
.section {
  padding-block: clamp(3rem, 6vw, 5rem);
}

/* ── Overlay ────────────────────────────────────────────────── */
.overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 13, 10, 0.75);
  backdrop-filter: blur(4px);
  z-index: 400;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-slow);
}
.overlay.active {
  opacity: 1;
  pointer-events: all;
}

/* ── GSAP Animation Initial States ─────────────────────────── */
.gsap-fade-up {
  opacity: 0;
  transform: translateY(30px);
}
.gsap-fade-in {
  opacity: 0;
}
.gsap-fade-left {
  opacity: 0;
  transform: translateX(-30px);
}
.gsap-fade-right {
  opacity: 0;
  transform: translateX(30px);
}
.gsap-scale-in {
  opacity: 0;
  transform: scale(0.92);
}
.gsap-reveal-up {
  clip-path: inset(100% 0 0 0);
}
.gsap-stagger > * {
  opacity: 0;
  transform: translateY(20px);
}

/* ── 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;
  }

  .gsap-fade-up,
  .gsap-fade-in,
  .gsap-fade-left,
  .gsap-fade-right,
  .gsap-scale-in,
  .gsap-reveal-up {
    opacity: 1;
    transform: none;
    clip-path: none;
  }

  .gsap-stagger > * {
    opacity: 1;
    transform: none;
  }

  .marquee-track {
    animation: none !important;
  }
}