/* ================================================================
   AERY SITES — DESIGN SYSTEM
   Premium dark-mode SaaS aesthetic
   Inspired by Vercel · Linear · Framer · Supabase
   ================================================================ */

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

/* ---------- Emoji Polyfill for Windows Flags ---------- */
@font-face {
  font-family: "Twemoji Country Flags";
  unicode-range: U+1F1E6-1F1FF, U+1F3F4, U+E0062-E007F;
  src: url("https://cdn.jsdelivr.net/npm/country-flag-emoji-polyfill@0.1/dist/TwemojiCountryFlags.woff2") format("woff2");
  font-display: swap;
}

.emoji-flag, .currency-flag {
  font-family: "Twemoji Country Flags", "Segoe UI Emoji", "Twemoji Mozilla", "Apple Color Emoji", sans-serif !important;
}

/* ---------- CSS Custom Properties ---------- */
:root {
  /* Background / Surface */
  --bg-primary:    #09090b;
  --bg-secondary:  #0f0f14;
  --bg-tertiary:   #16161d;
  --bg-card:       rgba(255, 255, 255, 0.03);
  --bg-card-hover: rgba(255, 255, 255, 0.06);

  /* Glass */
  --glass-bg:      rgba(255, 255, 255, 0.04);
  --glass-border:  rgba(255, 255, 255, 0.08);
  --glass-blur:    16px;

  /* Text */
  --text-primary:   #f4f4f5;
  --text-secondary: #a1a1aa;
  --text-muted:     #71717a;
  --text-accent:    #3b65ef;

  /* Accent gradient */
  --gradient-start: #6366f1;   /* Indigo */
  --gradient-mid:   #3b65ef;   /* Blue */
  --gradient-end:   #3b65ef;   /* Blue */
  --gradient:       linear-gradient(135deg, var(--gradient-start), var(--gradient-mid), var(--gradient-end));

  /* Accent solid */
  --accent:         #3b65ef;
  --accent-hover:   #2c4fc7;
  --accent-glow:    rgba(59, 101, 239, 0.35);

  /* Success / Warning / Error */
  --success:  #10b981;
  --warning:  #f59e0b;
  --error:    #ef4444;

  /* Border */
  --border:       rgba(255, 255, 255, 0.08);
  --border-hover: rgba(255, 255, 255, 0.15);

  /* Radii */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Font */
  --font-sans: 'Twemoji Country Flags', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Shadows */
  --shadow-sm:  0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md:  0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-lg:  0 20px 60px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 40px var(--accent-glow);

  /* Transitions */
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --duration: 0.3s;
}

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

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

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

a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
button { font-family: var(--font-sans); cursor: pointer; }

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

.heading-xl   { font-size: clamp(2.5rem, 6vw, 4.5rem); font-weight: 800; line-height: 1.1; letter-spacing: -0.03em; }
.heading-lg   { font-size: clamp(2rem, 4vw, 3rem);   font-weight: 700; line-height: 1.15; letter-spacing: -0.02em; }
.heading-md   { font-size: clamp(1.5rem, 3vw, 2rem);  font-weight: 700; line-height: 1.2; }
.heading-sm   { font-size: clamp(1.125rem, 2vw, 1.5rem); font-weight: 600; line-height: 1.3; }
.body-lg      { font-size: 1.125rem; line-height: 1.7; color: var(--text-secondary); }
.body-md      { font-size: 1rem; line-height: 1.6; color: var(--text-secondary); }
.body-sm      { font-size: 0.875rem; line-height: 1.5; color: var(--text-muted); }
.label        { font-size: 0.75rem; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-muted); }

/* ---------- Container ---------- */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.container-sm { max-width: 800px; }
.container-lg { max-width: 1400px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  border: none;
  transition: all var(--duration) var(--ease);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--gradient);
  color: #fff;
  box-shadow: 0 4px 20px var(--accent-glow);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px var(--accent-glow);
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border);
}
.btn-secondary:hover {
  border-color: var(--border-hover);
  background: var(--glass-bg);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  padding: 8px 16px;
}
.btn-ghost:hover {
  color: var(--text-primary);
}

.btn-sm { padding: 8px 20px; font-size: 0.8125rem; }
.btn-lg { padding: 16px 36px; font-size: 1rem; }

/* Gradient border button */
.btn-gradient-border {
  background: var(--bg-primary);
  color: var(--text-primary);
  border: none;
  position: relative;
  z-index: 1;
}
.btn-gradient-border::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-full);
  padding: 1.5px;
  background: var(--gradient);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}
.btn-gradient-border:hover {
  background: var(--glass-bg);
}

/* ---------- Glass Card ---------- */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  transition: all var(--duration) var(--ease);
}

.glass-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-glow);
  transform: translateY(-4px);
}

/* ---------- Badge / Pill ---------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  border-radius: var(--radius-full);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-accent);
}

.badge-success { background: rgba(16, 185, 129, 0.12); border-color: rgba(16, 185, 129, 0.2); color: var(--success); }

/* ---------- Section ---------- */
.section {
  padding: 120px 0;
  position: relative;
}
.section-sm { padding: 80px 0; }

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 64px;
}

.section-header .label { margin-bottom: 16px; }
.section-header .heading-lg { margin-bottom: 16px; }
.section-header .body-lg { margin-bottom: 0; }

/* ---------- Navbar ---------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 0 24px;
  height: 72px;
  display: flex;
  align-items: center;
  transition: all var(--duration) var(--ease);
}

.nav.scrolled {
  background: rgba(9, 9, 11, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
  list-style: none;
}

.nav-links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--duration) var(--ease);
  position: relative;
}
.nav-links a:hover { color: var(--text-primary); }
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1.5px;
  background: var(--gradient);
  transition: width var(--duration) var(--ease);
  border-radius: 1px;
}
.nav-links a:hover::after { width: 100%; }

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Mobile nav */
.nav-mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 4px;
}

.nav-mobile-menu {
  display: none;
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--bg-primary);
  z-index: 99;
  padding: 32px 24px;
  flex-direction: column;
  gap: 24px;
  border-top: 1px solid var(--border);
}
.nav-mobile-menu.open { display: flex; }
.nav-mobile-menu a {
  font-size: 1.125rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
  transition: color var(--duration) var(--ease);
}
.nav-mobile-menu a:hover { color: var(--text-primary); }
.nav-mobile-menu .btn { width: 100%; margin-top: 8px; text-align: center; }

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-actions .btn { display: none; }
  .nav-mobile-toggle { display: block; }
  .nav-actions #navUser { display: none; }
}

/* ---------- Footer ---------- */
.footer {
  border-top: 1px solid var(--border);
  padding: 80px 0 40px;
  background: var(--bg-secondary);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 60px;
}

.footer-brand .nav-logo { margin-bottom: 16px; }
.footer-brand p { color: var(--text-muted); font-size: 0.875rem; max-width: 280px; }

.footer-col h4 {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 20px;
}
.footer-col a {
  display: block;
  font-size: 0.875rem;
  color: var(--text-muted);
  padding: 6px 0;
  transition: color var(--duration) var(--ease);
}
.footer-col a:hover { color: var(--text-primary); }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}

.footer-bottom p { color: var(--text-muted); font-size: 0.8125rem; }

.footer-socials {
  display: flex;
  gap: 16px;
}
.footer-socials a {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-muted);
  transition: all var(--duration) var(--ease);
}
.footer-socials a:hover {
  color: var(--text-primary);
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
}
.footer-socials a svg { width: 18px; height: 18px; }

@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; gap: 16px; }
}
@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; }
}

/* ---------- Futuristic Background ---------- */
.bg-grid {
  position: fixed;
  inset: 0;
  z-index: -2;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse at center, rgba(0,0,0,0.6) 0%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at center, rgba(0,0,0,0.6) 0%, transparent 70%);
}

.bg-glow {
  position: fixed;
  top: -40%;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 600px;
  background: radial-gradient(
    ellipse at center,
    rgba(99, 102, 241, 0.15) 0%,
    rgba(139, 92, 246, 0.08) 35%,
    transparent 70%
  );
  z-index: -1;
  pointer-events: none;
}

.bg-noise {
  position: fixed;
  inset: 0;
  z-index: -3;
  opacity: 0.03;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 128px 128px;
}

/* ---------- Scroll Animations ---------- */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
.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; }

/* ---------- Utility ---------- */
.text-center { text-align: center; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.gap-8  { gap: 8px; }
.gap-12 { gap: 12px; }
.gap-16 { gap: 16px; }
.gap-24 { gap: 24px; }
.mt-8  { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }
.mt-48 { margin-top: 48px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }

/* ---------- Toast Notifications ---------- */
.toast {
  position: fixed;
  right: 24px;
  bottom: 24px;
  padding: 14px 20px;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 600;
  color: #fff;
  background: var(--accent);
  box-shadow: var(--shadow-md);
  z-index: 2000;
  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
  transition: opacity 0.25s var(--ease), transform 0.25s var(--ease);
}
.toast.show { opacity: 1; transform: translateY(0); pointer-events: auto; }
.toast.error { background: var(--error); }

/* ---------- Auth pages ---------- */
.auth-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.auth-container {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 24px;
  position: relative;
}

.auth-card {
  width: 440px;
  max-width: 100%;
  padding: 48px 40px;
  border-radius: var(--radius-xl);
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  position: relative;
}

.auth-card h1 {
  font-size: 2rem;
  font-weight: 800;
  text-align: center;
  margin-bottom: 8px;
}

.auth-card .subtitle {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.875rem;
  margin-bottom: 32px;
}

.form-group { margin-bottom: 20px; }
.form-group label {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.form-group input {
  width: 100%;
  padding: 14px 16px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.9375rem;
  font-family: var(--font-sans);
  transition: border-color var(--duration) var(--ease), background var(--duration) var(--ease);
}
.form-group input::placeholder { color: var(--text-muted); }
.form-group input:focus {
  outline: none;
  border-color: var(--accent);
  background: rgba(255, 255, 255, 0.06);
  box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.15);
}

.auth-btn {
  width: 100%;
  padding: 14px;
  background: var(--gradient);
  color: #fff;
  border: none;
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--duration) var(--ease);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  box-shadow: 0 4px 20px var(--accent-glow);
}
.auth-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px var(--accent-glow);
}

.auth-error {
  color: var(--error);
  font-size: 0.8125rem;
  text-align: center;
  margin-top: 12px;
  min-height: 20px;
}

.auth-link {
  text-align: center;
  margin-top: 24px;
  font-size: 0.875rem;
  color: var(--text-muted);
}
.auth-link a {
  color: var(--accent);
  font-weight: 600;
  transition: color var(--duration) var(--ease);
}
.auth-link a:hover { color: var(--text-accent); }