/* ============================================================
   FOCACCINE — Global Design System
   Light theme · Sage accent · 8px grid
   ============================================================ */

/* ── Google Fonts ── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=JetBrains+Mono:wght@400;500;600&display=swap');

/* ── CSS Variables ── */
:root {
  /* Palette */
  --clr-bg:            #f8f9f7;
  --clr-surface:       #ffffff;
  --clr-surface-alt:   #f2f4f1;
  --clr-border:        rgba(120,140,110,0.18);
  --clr-border-strong: rgba(120,140,110,0.32);

  /* Sage gradient accent */
  --clr-sage:          #7a9a6e;
  --clr-sage-light:    #9db88e;
  --clr-sage-dark:     #5a7a50;
  --clr-sage-muted:    rgba(122,154,110,0.12);
  --clr-sage-glow:     rgba(122,154,110,0.25);

  --gradient-sage:     linear-gradient(135deg, #7a9a6e 0%, #9db88e 50%, #b5cf9e 100%);
  --gradient-sage-alt: linear-gradient(135deg, #5a7a50 0%, #7a9a6e 60%, #9db88e 100%);
  --gradient-sage-text:linear-gradient(120deg, #5a7a50 0%, #7a9a6e 40%, #9db88e 100%);

  /* Text */
  --clr-text:          #1a1f16;
  --clr-text-muted:    #6b7563;
  --clr-text-faint:    #9aa38e;

  /* Glassmorphism */
  --glass-bg:          rgba(255,255,255,0.72);
  --glass-bg-dark:     rgba(248,249,247,0.85);
  --glass-blur:        blur(18px);
  --glass-border:      1px solid rgba(122,154,110,0.2);

  /* Shadows */
  --shadow-sm:         0 1px 3px rgba(30,50,20,0.06), 0 1px 2px rgba(30,50,20,0.04);
  --shadow-md:         0 4px 16px rgba(30,50,20,0.08), 0 2px 6px rgba(30,50,20,0.04);
  --shadow-lg:         0 12px 40px rgba(30,50,20,0.10), 0 4px 12px rgba(30,50,20,0.06);
  --shadow-glow:       0 0 32px rgba(122,154,110,0.18);

  /* Spacing (8px grid) */
  --space-1:  8px;
  --space-2:  16px;
  --space-3:  24px;
  --space-4:  32px;
  --space-5:  40px;
  --space-6:  48px;
  --space-8:  64px;
  --space-10: 80px;
  --space-12: 96px;
  --space-16: 128px;

  /* Typography */
  --font-sans:  'Inter', system-ui, sans-serif;
  --font-mono:  'JetBrains Mono', monospace;
  --text-xs:    0.6875rem;  /* 11px */
  --text-sm:    0.8125rem;  /* 13px */
  --text-base:  0.9375rem;  /* 15px */
  --text-lg:    1.0625rem;  /* 17px */
  --text-xl:    1.25rem;
  --text-2xl:   1.5rem;
  --text-3xl:   2rem;
  --text-4xl:   2.5rem;
  --text-5xl:   3.5rem;
  --text-6xl:   4.5rem;
  --text-7xl:   5.5rem;

  /* Radius */
  --radius-sm:  4px;
  --radius-md:  8px;
  --radius-lg:  16px;
  --radius-xl:  24px;

  /* Transitions */
  --ease-out:   cubic-bezier(0.22, 1, 0.36, 1);
  --ease-in-out:cubic-bezier(0.65, 0, 0.35, 1);
  --dur-fast:   150ms;
  --dur-base:   280ms;
  --dur-slow:   480ms;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  color: var(--clr-text);
  background-color: var(--clr-bg);
  line-height: 1.6;
  overflow-x: hidden;
}

img, video, canvas, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: none; background: none; }
ul, ol { list-style: none; }
input, textarea, select { font: inherit; }

/* ── Typography helpers ── */
.font-mono { font-family: var(--font-mono); }

.label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--clr-sage);
  font-weight: 500;
}

.display-xl {
  font-size: clamp(var(--text-4xl), 8vw, var(--text-7xl));
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.0;
}

.display-lg {
  font-size: clamp(var(--text-3xl), 5vw, var(--text-5xl));
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.05;
}

.display-md {
  font-size: clamp(var(--text-2xl), 3vw, var(--text-4xl));
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.text-gradient {
  background: var(--gradient-sage-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── Layout ── */
.container {
  max-width: 1280px;
  margin-inline: auto;
  padding-inline: var(--space-6);
}

@media (max-width: 768px) {
  .container { padding-inline: var(--space-3); }
}

/* ── Navigation ── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: var(--space-2) 0;
  transition: background var(--dur-base) var(--ease-out),
              backdrop-filter var(--dur-base) var(--ease-out),
              border-color var(--dur-base) var(--ease-out);
  border-bottom: 1px solid transparent;
}

.nav.scrolled {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-color: var(--clr-border);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
}

.nav__logo {
  font-size: var(--text-lg);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--clr-text);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.nav__logo-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--gradient-sage);
  flex-shrink: 0;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-5);
}

.nav__link {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--clr-text-muted);
  letter-spacing: 0.02em;
  transition: color var(--dur-fast) var(--ease-out);
  position: relative;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0; right: 0;
  height: 1px;
  background: var(--gradient-sage);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur-base) var(--ease-out);
}

.nav__link:hover { color: var(--clr-text); }
.nav__link:hover::after { transform: scaleX(1); }
.nav__link.active { color: var(--clr-text); }
.nav__link.active::after { transform: scaleX(1); }

.nav__cta {
  font-size: var(--text-sm);
  font-weight: 600;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-sm);
  background: var(--gradient-sage);
  color: #fff;
  letter-spacing: 0.02em;
  transition: opacity var(--dur-fast), box-shadow var(--dur-base) var(--ease-out),
              transform var(--dur-fast);
  box-shadow: var(--shadow-sm);
}

.nav__cta:hover {
  opacity: 0.92;
  box-shadow: var(--shadow-glow);
  transform: translateY(-1px);
}

/* Hamburger */
.nav__burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-1);
  cursor: pointer;
}

.nav__burger span {
  display: block;
  width: 22px; height: 1.5px;
  background: var(--clr-text);
  border-radius: 2px;
  transition: transform var(--dur-base) var(--ease-out),
              opacity var(--dur-fast);
}

.nav__burger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav__burger.open span:nth-child(2) { opacity: 0; }
.nav__burger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* Mobile nav */
.nav__mobile {
  position: fixed;
  top: 0; 
  left: 0; 
  right: 0; 
  height: 100dvh;
  z-index: 999;
  background: var(--glass-bg-dark);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  justify-content: flex-start;
  padding-top: 100px;
  padding-right: var(--space-3);
  
  /* Reduced from var(--space-5) to var(--space-3) or var(--space-2) */
  gap: var(--space-3); 
  
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur-base) var(--ease-out);
}

.nav__mobile a {
  /* Matched to the .nav__logo text size and weight */
  font-size: var(--text-lg); 
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--clr-text);
  transition: color var(--dur-fast);
}

.nav__mobile.open {
  opacity: 1;
  pointer-events: auto;
}

.nav__mobile a:hover { color: var(--clr-sage); }

@media (max-width: 768px) {
  .nav__links { display: none; }
  .nav__burger { display: flex; }
}

/* ── Social icons ── */
.social-bar {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.social-icon {
  width: 36px; height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  color: var(--clr-text-muted);
  transition: color var(--dur-fast), background var(--dur-fast),
              transform var(--dur-fast);
}

.social-icon:hover {
  color: var(--clr-sage);
  background: var(--clr-sage-muted);
  transform: translateY(-2px);
}

.social-icon svg { width: 16px; height: 16px; }

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: all var(--dur-base) var(--ease-out);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--gradient-sage);
  color: #fff;
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}

.btn-outline {
  border: 1px solid var(--clr-border-strong);
  color: var(--clr-text);
  background: transparent;
}

.btn-outline:hover {
  border-color: var(--clr-sage);
  color: var(--clr-sage);
  background: var(--clr-sage-muted);
}

/* ── Glass Card ── */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  transition: box-shadow var(--dur-base) var(--ease-out),
              transform var(--dur-base) var(--ease-out),
              border-color var(--dur-base) var(--ease-out);
}

.glass-card:hover {
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  transform: translateY(-3px);
  border-color: rgba(122,154,110,0.35);
}

/* ── Section ── */
.section {
  padding-block: var(--space-16);
}

.section-header {
  margin-bottom: var(--space-8);
}

.section-label {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--clr-sage);
  margin-bottom: var(--space-2);
}

/* ── Tag/Badge ── */
.tag {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  border: 1px solid var(--clr-border);
  color: var(--clr-text-muted);
  background: var(--clr-surface-alt);
  letter-spacing: 0.04em;
  transition: all var(--dur-fast);
}

.tag-accent {
  border-color: rgba(122,154,110,0.35);
  color: var(--clr-sage-dark);
  background: var(--clr-sage-muted);
}

/* ── Divider ── */
.divider {
  width: 100%;
  height: 1px;
  background: var(--clr-border);
}

/* ── Footer ── */
.footer {
  border-top: 1px solid var(--clr-border);
  padding-block: var(--space-8);
  background: var(--clr-surface);
}

.footer__inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: var(--space-6);
}

.footer__nav {
  display: flex;
  justify-content: center;
  gap: var(--space-5);
}

.footer__nav a {
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--clr-text-muted);
  transition: color var(--dur-fast);
}

.footer__nav a:hover { color: var(--clr-sage); }

.footer__right {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: var(--space-2);
}

.footer__copy {
  font-size: var(--text-xs);
  color: var(--clr-text-faint);
}

@media (max-width: 768px) {
  .footer__inner {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .footer__right { align-items: center; }
  .footer__nav { flex-wrap: wrap; justify-content: center; }
}

/* ── Reveal animations ── */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity var(--dur-slow) var(--ease-out),
              transform var(--dur-slow) var(--ease-out);
}

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

.reveal-delay-1 { transition-delay: 100ms; }
.reveal-delay-2 { transition-delay: 200ms; }
.reveal-delay-3 { transition-delay: 300ms; }
.reveal-delay-4 { transition-delay: 400ms; }
.reveal-delay-5 { transition-delay: 500ms; }
.reveal-delay-6 { transition-delay: 600ms; }

/* ── Cursor glow ── */
.cursor-glow {
  position: fixed;
  pointer-events: none;
  z-index: 9999;
  width: 300px; height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(122,154,110,0.12) 0%, transparent 70%);
  transform: translate(-50%, -50%);
  transition: left 0.12s ease, top 0.12s ease;
  will-change: left, top;
}

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--clr-sage-muted); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--clr-sage-light); }

/* ── Page transitions ── */
.page-transition {
  animation: pageFadeIn 0.5s var(--ease-out) forwards;
}

@keyframes pageFadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: none; }
}

/* ── Utility ── */
.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;
}

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: var(--space-1); }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.text-muted { color: var(--clr-text-muted); }
.text-sage { color: var(--clr-sage); }
.w-full { width: 100%; }
.relative { position: relative; }
.overflow-hidden { overflow: hidden; }