/* ============================================
   MK CARBON — DESIGN SYSTEM
   Shared styles across all pages
   ============================================ */

/* ---- CSS Variables ---- */
:root {
  --carbon-950: #0a0a0a;
  --carbon-900: #111111;
  --carbon-800: #1a1a1a;
  --carbon-700: #2d2d2d;
  --carbon-600: #404040;
  --carbon-500: #5c5c5c;
  --carbon-400: #8a8a8a;
  --carbon-300: #b0b0b0;
  --carbon-200: #d4d4d4;
  --carbon-100: #e8e8e8;
  --carbon-50: #f6f6f6;
  --accent: #533a17;
  --accent-light: #533a17;
  --accent-dark: #a67a3a;
  --accent-glow: rgba(200, 150, 78, 0.12);
  --accent-glow-strong: rgba(200, 150, 78, 0.25);
  --white: #ffffff;
  --black: #000000;
  --gray-700: #4b4b4b;
  --success: #22c55e;
  --blue: #3b82f6;
  --red: #ef4444;
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;
  --section-pad: clamp(5rem, 10vw, 8rem);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
}

/* ---- Reset ---- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
body { font-family: var(--font-body); color: var(--carbon-700); background: var(--white); line-height: 1.65; overflow-x: hidden; }
a { text-decoration: none; color: inherit; transition: color 0.3s; }
img { max-width: 100%; display: block; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
ul, ol { list-style: none; }

/* ---- Layout ---- */
.container { max-width: 1200px; margin: 0 auto; padding: 0 clamp(1.25rem, 4vw, 2rem); }
.container-lg { max-width: 1400px; margin: 0 auto; padding: 0 clamp(1.25rem, 4vw, 2rem); }
.container-sm { max-width: 800px; margin: 0 auto; padding: 0 clamp(1.25rem, 4vw, 2rem); }

/* ---- Typography ---- */
.section-label {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}
.section-label::before {
  content: '';
  width: 2rem;
  height: 1px;
  background: var(--accent);
}
.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.25rem);
  font-weight: 700;
  line-height: 1.12;
  color: var(--carbon-900);
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}
.section-subtitle {
  font-size: 1.1rem;
  color: var(--carbon-500);
  max-width: 620px;
  line-height: 1.75;
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.85rem 2rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.92rem;
  transition: all 0.35s var(--ease-out);
  white-space: nowrap;
}
.btn svg { width: 18px; height: 18px; flex-shrink: 0; }
.btn-primary {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
  color: var(--white);
  box-shadow: 0 4px 15px rgba(200,150,78,0.25);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(200,150,78,0.35); filter: brightness(1.1); }
.btn-secondary {
  background: var(--carbon-900);
  color: var(--black);
}
.btn-secondary:hover { background: var(--carbon-700); transform: translateY(-2px); }
.btn-outline {
  border: 1.5px solid #533a17;
  color: var(--black);
  background: var(--accent-glow);
}
.btn-outline:hover { border-color:transparent; background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);color: var(--white); }
.btn-outline-dark {
  border: 1.5px solid var(--carbon-200);
  color: var(--carbon-700);
}
.btn-outline-dark:hover { border-color: var(--accent); color: var(--accent); }

/* ---- 3D Icon System ---- */
.icon-3d {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  background: linear-gradient(145deg, #f8eed8, #e8d4a8);
  /* box-shadow:
    0 6px 20px rgba(200,150,78,0.2),
    0 2px 6px rgba(200,150,78,0.15),
    inset 0 1px 0 var(--black),
    inset 0 -2px 4px rgba(200,150,78,0.15); */
  overflow: hidden;
}
/* .icon-3d::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 50%;
  bottom: 50%;
  background: linear-gradient(135deg, var(--black) 0%, transparent 100%);
  border-radius: var(--radius-md);
  pointer-events: none;
} */
.icon-3d svg {
  position: relative;
  z-index: 1;
  filter: drop-shadow(0 1px 2px rgba(166,122,58,0.3));
}
.icon-3d-sm { width: 44px; height: 44px; }
.icon-3d-sm svg { width: 22px; height: 22px; color: var(--accent-dark); }
.icon-3d-md { width: 56px; height: 56px; }
.icon-3d-md svg { width: 28px; height: 28px; color: var(--accent-dark); }
.icon-3d-lg { width: 72px; height: 72px; border-radius: var(--radius-lg); }
.icon-3d-lg svg { width: 36px; height: 36px; color: var(--accent-dark); }

/* Dark variant */
.icon-3d-dark {
  /* background: linear-gradient(145deg, var(--carbon-700), var(--carbon-900)); */
  /* box-shadow:
    0 6px 20px rgba(0,0,0,0.3),
    0 2px 6px rgba(0,0,0,0.2),
    inset 0 1px 0 rgb(0 0 0 / 8%),
    inset 0 -2px 4px rgba(0,0,0,0.3); */
}
.icon-3d-dark::before {
  background: linear-gradient(135deg, rgb(0 0 0 / 10%) 0%, transparent 100%);
}
.icon-3d-dark svg { color: var(--accent); filter: drop-shadow(0 1px 3px rgba(200,150,78,0.4)); }

/* ---- Cards ---- */
.card {
  background: var(--white);
  border: 1px solid var(--carbon-100);
  border-radius: var(--radius-md);
  transition: all 0.4s var(--ease-out);
}
.card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(0,0,0,0.07);
}

/* ---- Animations ---- */
.reveal { opacity: 0; transform: translateY(40px); transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out); }
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }
.reveal-delay-5 { transition-delay: 0.5s; }

/* ---- Scroll Progress ---- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-light));
  z-index: 1001;
  transition: width 0.1s linear;
}

/* ============================================
   NAVIGATION
   ============================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1rem 0;
  transition: all 0.4s var(--ease-out);
}
.nav.scrolled {
  background: #ededed;
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  padding: 0.6rem 0;
  box-shadow: 0 1px 0 rgb(0 0 0 / 4%);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo { display: flex; align-items: center; gap: 0.6rem; }
.nav-logo-icon {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.85rem;
  color: var(--white);
  box-shadow: 0 2px 8px rgba(200,150,78,0.3);
}
.nav-logo-text {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--white);
}
.nav-logo-text span { color: var(--accent); }
.nav-links { display: flex; gap: 0; align-items: center; }
.nav-links a {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--gray-700);
  padding: 0.5rem 1.1rem;
  border-radius: 6px;
  transition: all 0.3s;
}
.nav-links a:hover { color: var(--white); color: var(--accent); }
.nav-links a.active { color: var(--accent); }
.nav-cta {
  background: linear-gradient(135deg, var(--accent), var(--accent-dark)) !important;
  color: var(--white) !important;
  padding: 0.55rem 1.4rem !important;
  font-weight: 600 !important;
  margin-left: 0.5rem;
  box-shadow: 0 2px 10px rgba(200,150,78,0.3);
}
.nav-cta:hover { filter: brightness(1.1); transform: translateY(-1px); }

.nav-hamburger { display: none; flex-direction: column; gap: 5px; width: 28px; padding: 4px 0; z-index: 1002; }
.nav-hamburger span { display: block; height: 2px; background: var(--white); border-radius: 2px; transition: all 0.3s; }
.nav-hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-hamburger.active span:nth-child(2) { opacity: 0; }
.nav-hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

@media (max-width: 900px) {
  .nav-hamburger { display: flex; }
  .nav-links {
    position: fixed; top: 0; right: -100%; width: min(340px, 85vw); height: 100vh;
    background: var(--carbon-900); flex-direction: column; padding: 5rem 2rem 2rem; gap: 0.25rem;
    transition: right 0.4s var(--ease-out); box-shadow: -20px 0 60px rgba(0,0,0,0.5);
  }
  .nav-links.open { right: 0; }
  .nav-links a { font-size: 1.05rem; padding: 0.75rem 1rem; width: 100%; }
  .nav-cta { margin-left: 0 !important; margin-top: 1rem; text-align: center; justify-content: center; }
}

/* ============================================
   PAGE HERO (subpages)
   ============================================ */
.page-hero {
  position: relative;
  padding: 10rem 0 5rem;
  background: var(--white);
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  /* background:
    radial-gradient(ellipse 60% 50% at 20% 60%, rgba(200,150,78,0.07) 0%, transparent 60%),
    radial-gradient(ellipse 40% 60% at 80% 30%, rgba(200,150,78,0.04) 0%, transparent 50%);
     */
  background: linear-gradient(90deg, rgba(254, 209, 145, 1) 0%, rgba(255, 241, 221, 1) 100%);
}
.page-hero-content { position: relative; z-index: 1; }
.page-hero .section-label { margin-bottom: 1.5rem; }
.page-hero .section-title { color: var(--black); font-size: clamp(2.5rem, 5vw, 4rem); margin-bottom: 1.25rem; }
.page-hero .section-subtitle { color: var(--gray-700); max-width: 600px; }
.breadcrumb {
  display: flex; align-items: center; gap: 0.5rem;
  font-size: 0.82rem; color: var(--carbon-700); margin-bottom: 2rem;
}
.breadcrumb a { color: var(--gray-700); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb svg { width: 14px; height: 14px; }

/* ============================================
   FOOTER
   ============================================ */
.footer {
  padding: 4rem 0 1.5rem;
  background: var(--black);
  border-top: 1px solid rgba(255,255,255,0.05);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2.5fr 1fr 1fr 1.2fr;
  gap: 3rem;
  margin-bottom: 3rem;
}
.footer-brand p {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.4);
  line-height: 1.7;
  margin-top: 1rem;
  max-width: 320px;
}
.footer-cert {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1.25rem;
  padding: 0.5rem 1rem;
  background: rgb(255 255 255 / 4%);
  border: 1px solid rgb(0 0 0 / 8%);
  border-radius: var(--radius-sm);
  font-size: 0.78rem;
  color: var(--gray-700);
}
.footer-cert svg { width: 16px; height: 16px; color: var(--accent); }
.footer-col h4 {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 1.25rem;
}
.footer-col a {
  display: block;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.4);
  padding: 0.3rem 0;
  transition: all 0.3s;
}
.footer-col a:hover { color: var(--accent-dark); transform: translateX(3px); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255,255,255,0.05);
  font-size: 0.78rem;
  color: rgba(255,255,255,0.3);
  flex-wrap: wrap;
  gap: 0.5rem;
}

@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
}
@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; }
}

/* ---- Back to Top ---- */
.back-to-top {
  position: fixed; bottom: 2rem; right: 2rem;
  width: 46px; height: 46px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: var(--white);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; transform: translateY(10px);
  transition: all 0.3s; z-index: 999;
  box-shadow: 0 4px 16px rgba(200,150,78,0.35);
}
.back-to-top.visible { opacity: 1; transform: translateY(0); }
.back-to-top:hover { filter: brightness(1.15); transform: translateY(-3px); }
.back-to-top svg { width: 20px; height: 20px; }

/* ============================================
   GRAPHIC ELEMENTS
   ============================================ */
.graphic-grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(200,150,78,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(200,150,78,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 50%, black 20%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 50%, black 20%, transparent 70%);
  pointer-events: none;
}

.graphic-dots {
  position: absolute;
  background-image: radial-gradient(circle, rgba(200,150,78,0.15) 1px, transparent 1px);
  background-size: 24px 24px;
  pointer-events: none;
}

.graphic-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(200,150,78,0.1);
  pointer-events: none;
}

/* Floating shapes */
.float-shape {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  opacity: 0.5;
}

/* ---- SVG Illustration Containers ---- */
.illustration-box {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: linear-gradient(145deg, var(--carbon-50), var(--carbon-100));
}

/* ---- Stat Cards ---- */
.stat-card {
  padding: 1.5rem;
  border-radius: var(--radius-md);
  background: rgb(0 0 0 / 8%);
  border: 1px solid rgb(0 0 0 / 8%);
  text-align: center;
  transition: all 0.3s;
}
.stat-card:hover { border-color: rgba(200,150,78,0.3); background: rgba(255,255,255,0.06); }
.stat-value {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--white);
  letter-spacing: -0.02em;
  line-height: 1;
}
.stat-value span { color: var(--accent); }
.stat-label {
  font-size: 0.8rem;
  color: var(--black);
  margin-top: 0.4rem;
}

/* ============================================
   FORM STYLES
   ============================================ */
.form-group { display: flex; flex-direction: column; gap: 0.4rem; }
.form-group label {
  font-size: 0.8rem; font-weight: 600; color: var(--carbon-700);
}
.form-group input,
.form-group select,
.form-group textarea {
  padding: 0.85rem 1.1rem;
  border: 1.5px solid var(--carbon-200);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: var(--carbon-800);
  transition: all 0.3s;
  background: var(--white);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-glow);
}
.form-group textarea { resize: vertical; min-height: 130px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
@media (max-width: 600px) { .form-row { grid-template-columns: 1fr; } }

/* ============================================
   CTA BANNER
   ============================================ */
.cta-banner {
  padding: 5rem 0;
  background: var(--white);
  position: relative;
  overflow: hidden;
}
.cta-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 50% 70% at 25% 50%, rgba(200,150,78,0.08), transparent 60%),
    radial-gradient(ellipse 40% 60% at 80% 50%, rgba(200,150,78,0.05), transparent 50%);
}
.cta-inner { position: relative; text-align: center; max-width: 700px; margin: 0 auto; }
.cta-inner h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 700;
  color: var(--black);
  line-height: 1.2;
  margin-bottom: 1rem;
}
.cta-inner p {
  font-size: 1.05rem;
  color: var(--gray-700);
  margin-bottom: 2rem;
  line-height: 1.7;
}
.cta-actions { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }