/* ========== RESET & TOKENS ========== */
* { box-sizing: border-box }
html, body { height: 100% }
html { scroll-behavior: smooth }

/* Respect user's motion preferences */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  margin: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   DESIGN SYSTEM TOKENS
   Single source of truth for all design values
   ============================================ */
:root {
  /* === COLORS === */
  /* Base */
  --color-white: #ffffff;
  --color-black: #000000;
  
  /* Grays */
  --color-gray-50: #fafafa;
  --color-gray-100: #f5f5f5;
  --color-gray-200: #eeeeee;
  --color-gray-300: #e0e0e0;
  --color-gray-400: #bdbdbd;
  --color-gray-500: #9e9e9e;
  --color-gray-600: #757575;
  --color-gray-700: #616161;
  --color-gray-800: #424242;
  --color-gray-900: #212121;
  
  /* Semantic Colors */
  --ink: #0b0b0b;
  --ink-soft: #1a1a1a;
  --ink-soft-enhanced: #2a2a2a;
  --muted: #333333;
  --muted-enhanced: #4a4a4a;
  --bg: #F9F8F4;
  --bg-soft: #fafafa;
  --brand: #0a0a0a;
  
  /* Accents */
  --accent-1: #007a6b;
  --accent-2: #00b39e;
  --rule-grad: linear-gradient(90deg, var(--accent-1), var(--accent-2));
  
  /* === SPACING SCALE === */
  /* Fixed spacing (for precise layouts) */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;
  --space-24: 96px;
  
  /* Fluid spacing (responsive) */
  --space-xs: clamp(0.5rem, 0.45rem + 0.25vw, 0.75rem);
  --space-sm: clamp(0.75rem, 0.7rem + 0.25vw, 1rem);
  --space-md: clamp(1rem, 0.9rem + 0.5vw, 1.5rem);
  --space-lg: clamp(1.5rem, 1.3rem + 1vw, 2.5rem);
  --space-xl: clamp(2rem, 1.5rem + 2vw, 4rem);
  --space-2xl: clamp(3rem, 2rem + 4vw, 6rem);
  
  /* Section spacing */
  --space-section-sm: clamp(32px, 4vw, 56px);
  --space-section-md: clamp(56px, 7vw, 100px);
  --space-section-lg: clamp(72px, 8vw, 120px);
  --space-heading-gap: 2rem;
  
  /* === TYPOGRAPHY === */
  /* Font sizes (fluid) */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.85rem + 0.125vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.5vw, 1.5rem);
  --text-xl: clamp(1.25rem, 1.1rem + 0.75vw, 1.875rem);
  --text-2xl: clamp(1.5rem, 1.2rem + 1.5vw, 2.5rem);
  
  /* Heading sizes */
  --h1-size: clamp(2.6rem, 5.2vw, 5.2rem);
  --h2-size: clamp(2rem, 4.2vw, 3.6rem);
  --h3-size: clamp(1.3rem, 2.2vw, 1.8rem);
  
  /* Font weights */
  --font-normal: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;
  --font-extrabold: 800;
  --font-black: 900;
  
  /* Line heights */
  --leading-tight: 1.1;
  --leading-snug: 1.2;
  --leading-normal: 1.6;
  --leading-relaxed: 1.8;
  
  /* Letter spacing */
  --tracking-tight: -0.02em;
  --tracking-normal: 0;
  --tracking-wide: 0.025em;
  
  /* === BORDERS === */
  /* Border radius */
  --radius: 28px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-2xl: 22px;
  --radius-enhanced: 16px;
  --radius-pill: 999px;
  
  /* Legacy aliases for backward compatibility */
  --radius-1: 8px;
  --radius-2: 12px;
  --radius-3: 16px;
  --radius-4: 24px;
  
  /* Border widths */
  --border-1: 1px;
  --border-2: 2px;
  
  /* === SHADOWS === */
  /* Standard shadows */
  --shadow: 0 12px 50px rgba(0,0,0,.12);
  --shadow-xs: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.1), 0 2px 4px rgba(0,0,0,0.06);
  --shadow-lg: 0 10px 24px rgba(0,0,0,0.08);
  --shadow-xl: 0 20px 60px rgba(0,0,0,0.15);
  
  /* Soft shadows */
  --shadow-soft: 0 2px 8px rgba(0,0,0,0.04), 0 4px 16px rgba(0,0,0,0.06);
  --shadow-hover-soft: 0 4px 16px rgba(0,0,0,0.08), 0 8px 32px rgba(0,0,0,0.12);
  
  /* Strong shadows */
  --shadow-strong: 0 18px 60px rgba(0,0,0,.18);
  --shadow-strong-hover: 0 24px 60px rgba(0,0,0,.12);
  
  /* Hover shadows */
  --shadow-hover: 0 16px 60px rgba(0,0,0,.14);
  
  /* Elevation system */
  --elev-1: 0 1px 2px rgba(0,0,0,.06), 0 8px 18px rgba(0,0,0,.08);
  --elev-2: 0 12px 50px rgba(0,0,0,.12);
  
  /* === GLASS EFFECTS === */
  --glass-bg: var(--glass-bg-airy);
  --glass-border: var(--glass-border-airy);
  --glass-bg-airy: linear-gradient(180deg, rgba(255,255,255,.78), rgba(255,255,255,.64));
  --glass-border-airy: rgba(255,255,255,.28);
  --glass-bg-strong: linear-gradient(180deg, rgba(255,255,255,.90), rgba(255,255,255,.84));
  --glass-border-strong: rgba(231,235,240,.9);
  
  /* === Z-INDEX SCALE === */
  --z-base: 1;
  --z-10: 10;
  --z-20: 20;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-fixed: 300;
  --z-modal-backdrop: 400;
  --z-modal: 500;
  --z-popover: 600;
  --z-tooltip: 700;
  --z-toast: 800;
  --z-max: 9999;
  
  /* === TRANSITIONS === */
  /* Durations */
  --duration-fast: 150ms;
  --duration-base: 200ms;
  --duration-slow: 300ms;
  --duration-slower: 500ms;
  
  /* Legacy durations */
  --dur-1: .2s;
  --dur-2: .35s;
  
  /* Easing functions */
  --ease-linear: linear;
  --ease-in: cubic-bezier(0.4, 0, 1, 1);
  --ease-out: cubic-bezier(0, 0, 0.2, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
  
  /* Legacy easing */
  --transition-smooth: cubic-bezier(0.4, 0, 0.2, 1);
  --bezier: cubic-bezier(.19, 1, .22, 1);
  
  /* === LAYOUT === */
  --container: 1200px;
  --max-width-prose: 65ch;
  
  /* === BACKDROP FILTERS === */
  --backdrop-blur-sm: blur(4px);
  --backdrop-blur-md: blur(10px);
  --backdrop-blur-lg: blur(20px);
  --backdrop-saturate: saturate(140%);
  --backdrop-saturate-high: saturate(180%);
}

/* ========== TYPOGRAPHY — Heading rhythm ========== */
h1, h2 { font-weight:800; line-height:1.1; letter-spacing:-0.02em }
h3 { font-weight:700; line-height:1.2; letter-spacing:-0.01em }
h1 { font-size: var(--h1-size); }
h2 { font-size: var(--h2-size); }
h3 { font-size: var(--h3-size); }

/* Unified heading variants */
.heading{ margin:0; line-height:1.1; letter-spacing:-0.02em; }
.heading--accent{ position:relative; filter:drop-shadow(0 2px 12px rgba(0,0,0,.24)); }
.heading--accent::after{
  content:""; display:block; width: clamp(64px, 10ch, 120px); height:6px; margin:.8rem 0 0; border-radius:4px;
  background: var(--rule-grad); box-shadow:0 2px 6px -2px rgba(0,0,0,.28);
}
.heading--plain{ font-size: clamp(2rem, 4vw, 3rem); font-weight: 800; line-height: 1.15; letter-spacing: -0.02em; color: var(--ink); }
/* Consistent gap from heading to body text */
.heading--plain,
.heading--accent{ margin-block-end: var(--space-heading-gap); }

/* ========== ACCESSIBILITY ========== */
.skip-link {
  position:absolute; left:-999px; top:auto; width:1px; height:1px; overflow:hidden;
}
.skip-link:focus {
  left:12px; top:12px; width:auto; height:auto;
  background:#000; color:#fff; padding:8px 12px; border-radius:8px; z-index:999;
}

/* Visually hidden but screen-reader accessible */
.sr-only {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0); clip-path: inset(50%);
  white-space: nowrap; border: 0;
}

/* Focus states for keyboard navigation */
:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 2px;
}

/* ========== LAYOUT ========== */
.container { max-width:var(--container); margin:0 auto; padding:0 clamp(20px, 5vw, 24px) }

/* ======= HEADER & NAV ======= */
.site-header {
  position: absolute; top:0; left:0; width:100%; z-index: var(--z-sticky);
  padding: var(--space-5) 0; background: transparent;
}
.site-header .navbar { display:flex; align-items:center; gap:var(--space-6); width:100%; padding:0 clamp(20px, 5vw, 24px); }
.logo { font-weight:var(--font-bold); color:var(--ink); text-decoration:none; margin:0; transition: color var(--duration-base) var(--transition-smooth); }
.logo:hover { color: var(--muted); }

/* Desktop links */
.nav-links {
  display:flex; gap:28px; list-style:none;
  margin:0 0 0 auto; padding:0; justify-content:flex-end;
}
.nav-links a { color:var(--ink); text-decoration:none; font-weight: 500; transition:color .2s var(--transition-smooth) }
.nav-links a:hover { color:var(--muted) }

/* White-on-image variant (when body[data-nav="on-image"]) */
.on-image .logo,
.on-image .nav-links a { color:#fff; text-shadow:0 2px 12px rgba(0,0,0,.35) }

/* Mobile toggle (hidden on desktop) */
.menu-toggle{
  display:none; margin-left:auto; appearance:none; border:0; background:transparent; padding:8px;
  width:40px; height:40px; border-radius:12px; cursor:pointer;
  transition: background 0.2s var(--transition-smooth);
}
.menu-toggle:hover { background: rgba(0,0,0,0.04); }
.menu-toggle:focus-visible{ outline:3px solid #000; outline-offset:3px }
.menu-icon, .menu-icon::before, .menu-icon::after{
  display:block; width:20px; height:2px; background: currentColor; border-radius:2px; position:relative;
  transition: all 0.2s var(--transition-smooth);
}
.menu-icon{ color: var(--ink) }
.on-image .menu-icon{ color:#fff }
.menu-icon::before, .menu-icon::after{ content:""; position:absolute; left:0; }
.menu-icon::before{ top:-6px } .menu-icon::after{ top:6px }

/* Fullscreen mobile menu */
.mobile-menu{ position:fixed; inset:0; z-index:1200; display:block; background:rgba(0,0,0,0.4); backdrop-filter:blur(8px); -webkit-backdrop-filter:blur(8px); }
.mobile-menu[hidden]{ display:none }
.mobile-menu__panel{
  position:absolute; inset:0; background:#fff;
  padding:max(24px, env(safe-area-inset-top)) max(24px, env(safe-area-inset-right)) max(24px, env(safe-area-inset-bottom)) max(24px, env(safe-area-inset-left));
  display:flex; flex-direction:column; gap:24px; animation:mmSlide .3s var(--transition-smooth);
}
@keyframes mmSlide{ from{ opacity:0; transform:translateY(12px)} to{ opacity:1; transform:none } }

.menu-close{
  align-self:flex-end; appearance:none; border:0; background:#f3f3f3; color:var(--ink);
  width:40px; height:40px; border-radius:12px; font-size:20px; cursor:pointer;
  transition: all 0.2s var(--transition-smooth);
}
.menu-close:hover { background: #e9e9e9; transform: scale(1.05); }
.menu-close:focus-visible{ outline:3px solid #000; outline-offset:3px }

.mobile-links{ list-style:none; margin:12px 0 0; padding:0; display:flex; flex-direction:column; gap:18px; }
.mobile-links a{
  display:block; text-decoration:none; color:var(--ink); font-weight:800;
  font-size:clamp(28px, 6.4vw, 40px); letter-spacing:-.02em; padding:6px 0;
  transition: color 0.2s var(--transition-smooth), transform 0.2s var(--transition-smooth);
}
.mobile-links a:hover { color: var(--muted); transform: translateX(4px); }
.mobile-links a[aria-current="page"]{ color:var(--muted) }

body.menu-open{ overflow:hidden }

/* Breakpoint: switch to mobile menu */
@media (max-width: 900px){
  .nav-links{ display:none }
  .menu-toggle{ display:inline-flex; align-items:center; justify-content:center }
}

/* ============================================
   BUTTONS - Single Source of Truth
   ============================================ */

/* Base Button */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 40px;
  padding: 0 var(--space-5);
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  font-weight: var(--font-bold);
  font-size: 0.9375rem;
  line-height: 1;
  font-family: inherit;
  letter-spacing: 0.02em;
  cursor: pointer;
  text-decoration: none;
  gap: var(--space-2);
  transition: transform var(--duration-base) var(--transition-smooth),
              background var(--duration-base) var(--transition-smooth),
              border-color var(--duration-base) var(--transition-smooth),
              color var(--duration-base) var(--transition-smooth),
              box-shadow var(--duration-base) var(--transition-smooth);
}

.btn:hover {
  transform: translateY(-2px);
}

.btn:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 4px;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

/* Button Variants */
.btn--primary {
  background: var(--brand);
  color: var(--bg);
  border-color: var(--brand);
  box-shadow: var(--shadow-soft);
}

.btn--primary:hover {
  background: #171717;
  box-shadow: var(--shadow-hover-soft);
}

.btn--secondary {
  background: var(--bg);
  color: var(--ink);
  border-color: #e6e6e6;
}

.btn--secondary:hover {
  background: rgba(0, 0, 0, 0.04);
  border-color: #d9d9d9;
  box-shadow: var(--shadow-soft);
}

.btn--inverse {
  background: var(--bg);
  color: var(--ink);
  border-color: rgba(255, 255, 255, 0.3);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.btn--inverse:hover {
  background: rgba(255, 255, 255, 0.95);
  color: #000000;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
}

.btn--ghost {
  background: transparent;
  color: var(--bg);
  border-color: rgba(255, 255, 255, 0.28);
}

.btn--ghost:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.45);
}

/* Button Sizes */
.btn--sm {
  height: 34px;
  padding: 0 var(--space-3);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
}

.btn--md {
  height: 40px;
  padding: 0 var(--space-5);
}

.btn--lg {
  height: 48px;
  padding: 0 var(--space-8);
  border-radius: var(--radius-lg);
  font-size: 1.05rem;
}



/* ========== GLASS UTILITIES ========== */
.glass-strong{
  --glass-bg: var(--glass-bg-strong);
  --glass-border: var(--glass-border-strong);
  --shadow: var(--shadow-strong);
  --shadow-hover: var(--shadow-strong-hover);
}
.glass-airy{
  --glass-bg: var(--glass-bg-airy);
  --glass-border: var(--glass-border-airy);
}

/* ========== UTILITIES ========== */
[data-fade] {
  --fade-y:38px; --fade-dur:.9s; --fade-delay:0ms;
  opacity:0; transform:translate3d(0,var(--fade-y),0);
  transition:opacity var(--fade-dur) var(--bezier),
             transform var(--fade-dur) var(--bezier);
  transition-delay:var(--fade-delay);
  will-change:transform,opacity;
}
[data-fade].is-in { opacity:1; transform:none }
[data-parallax] { will-change:transform }



/* ========== SECTION SPACING UTILITIES ========== */
.section{ padding-block: var(--space-section-md); padding-inline: clamp(20px, 5vw, 24px); }
.section--sm{ padding-block: var(--space-section-sm); padding-inline: clamp(20px, 5vw, 24px); }
.section--lg{ padding-block: var(--space-section-lg); padding-inline: clamp(20px, 5vw, 24px); }



/* ===== Global Footer - Premium Editorial ===== */
.site-footer{ background:var(--bg); border-top:1px solid rgba(0,0,0,.06); margin-top:var(--space-section-lg); }
.footer-inner{
  max-width:1080px; margin:0 auto;
  padding:clamp(80px, 10vw, 120px) clamp(32px, 5vw, 56px) clamp(56px, 7vw, 80px);
  display:flex; flex-direction:column; gap:clamp(72px, 9vw, 100px);
}

/* Band 1: CTA Section */
.footer-outro{ text-align:center; max-width:680px; margin:0 auto; }
.outro-headline{
  font-size:clamp(1.75rem, 3.5vw, 2.75rem); font-weight:700; line-height:1.2; letter-spacing:-0.02em;
  color:var(--ink); margin:0 0 clamp(16px, 2vw, 24px);
}
.outro-subline{
  font-size:clamp(1rem, 1.2vw, 1.2rem); line-height:1.6; color:var(--ink-soft-enhanced);
  margin:0 0 clamp(40px, 5vw, 48px); font-weight:400;
}
.outro-buttons{ display:flex; align-items:center; justify-content:center; gap:20px; flex-wrap:wrap; }
.outro-buttons .btn { min-width: 180px; }

/* Band 2: Editorial Grid */
.footer-grid{
  display:grid; grid-template-columns:repeat(auto-fit, minmax(260px, 1fr));
  gap:clamp(48px, 6vw, 64px) clamp(40px, 5vw, 56px);
  padding-top:clamp(40px, 5vw, 56px); border-top:1px solid rgba(0,0,0,.08);
  max-width:900px; margin:0 auto;
}
.footer-col{ display:flex; flex-direction:column; gap:16px; text-align:center; }
.col-headline{
  font-size:clamp(0.9rem, 1vw, 1rem); text-transform:uppercase; letter-spacing:0.1em;
  font-weight:700; color:var(--ink-soft); margin:0 0 4px;
}
.col-copy{ font-size:clamp(0.9rem, 0.95vw, 1rem); line-height:1.6; color:var(--ink-soft); margin:0; font-weight:400; }
.col-links{ list-style:none; margin:0; padding:0; display:flex; flex-direction:column; gap:12px; align-items:center; }
.col-links a{
  color:var(--ink); text-decoration:none; font-size:clamp(0.9rem, 0.95vw, 1rem); font-weight:500;
  position:relative; display:inline-block; transition:color 0.2s var(--transition-smooth);
}
.col-links a::after{
  content:''; position:absolute; bottom:-2px; left:0; width:0; height:1px; background:currentColor;
  transition:width 0.3s var(--transition-smooth);
}
.col-links a:focus-visible { outline: 3px solid var(--ink); outline-offset: 4px; }
.col-links a:hover{ color:var(--ink-soft); }
.col-links a:hover::after{ width:100%; }
.col-links--social a{ word-break:break-word; }

/* Band 3: Meta Line */
.footer-meta{ text-align:center; padding-top:clamp(32px, 4vw, 40px); border-top:1px solid rgba(0,0,0,.06); }
.footer-meta p{
  font-size:clamp(0.8rem, 0.85vw, 0.875rem); color:var(--muted); line-height:1.6;
  margin:0; opacity:0.85; font-weight:400;
}

/* Responsive: Mobile */
@media (max-width: 768px){
  .footer-inner{ gap:clamp(56px, 9vw, 72px); }
  .outro-buttons{ flex-direction:column; width:100%; }
  .outro-buttons .btn{ width:100%; max-width:320px; }
  .footer-grid{ grid-template-columns:1fr; gap:clamp(48px, 7vw, 56px); }
  .footer-col{ text-align:center; }
  .col-links{ align-items:center; }
}
@media (max-width: 480px){
  .footer-meta p{ font-size:0.75rem; }
}

/* ========================================
   MOBILE RESPONSIVE IMPROVEMENTS
   ======================================== */
@media (max-width: 900px) {
  :root {
    --radius-enhanced: 12px;
  }
  
  /* Disable hover transforms on touch devices */
  .btn:hover,
  .menu-toggle:hover,
  .menu-close:hover {
    transform: none;
  }
}