/* =========
   Base + Theme
   ========= */
:root{
  --bg: #0b1220;
  --surface: rgba(255,255,255,0.06);
  --surface-2: rgba(255,255,255,0.10);
  --text: #e9eefc;
  --muted: rgba(233,238,252,0.74);
  --border: rgba(255,255,255,0.14);
  --primary: #7c5cff;
  --primary-2: #a38bff;
  --shadow: 0 12px 30px rgba(0,0,0,0.35);

  --radius: 18px;
  --container: 1080px;

  --font: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
}

:root[data-theme="light"]{
  --bg: #f7f8fe;
  --surface: rgba(13, 20, 44, 0.05);
  --surface-2: rgba(13, 20, 44, 0.08);
  --text: #0d142c;
  --muted: rgba(13, 20, 44, 0.70);
  --border: rgba(13, 20, 44, 0.12);
  --primary: #4b2cff;
  --primary-2: #6b55ff;
  --shadow: 0 12px 30px rgba(13, 20, 44, 0.15);
}

*{ box-sizing: border-box; }
html, body{ height: 100%; }
body{
  margin: 0;
  font-family: var(--font);
  background: radial-gradient(1200px 600px at 20% 10%, rgba(124,92,255,0.35), transparent 60%),
              radial-gradient(900px 600px at 80% 20%, rgba(163,139,255,0.22), transparent 55%),
              var(--bg);
  color: var(--text);
  line-height: 1.6;
}

a{ color: inherit; text-decoration: none; }
a:hover{ text-decoration: underline; }

code{
  padding: 0.15rem 0.35rem;
  border-radius: 10px;
  background: var(--surface);
  border: 1px solid var(--border);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

.container{
  width: min(var(--container), calc(100% - 2rem));
  margin: 0 auto;
}

.skip-link{
  position: absolute;
  left: -999px;
  top: 10px;
  background: var(--text);
  color: var(--bg);
  padding: 0.5rem 0.75rem;
  border-radius: 10px;
  z-index: 1000;
}
.skip-link:focus{ left: 10px; }

/* =========
   Header + Nav
   ========= */
.site-header{
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(10px);
  background: rgba(0,0,0,0.18);
  border-bottom: 1px solid var(--border);
}
:root[data-theme="light"] .site-header{ background: rgba(247,248,254,0.70); }

.header-inner{
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.85rem 0;
}

.brand{
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-width: 220px;
}
.logo{
  width: 42px;
  height: 42px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  display: grid;
  place-items: center;
  font-weight: 800;
  box-shadow: var(--shadow);
}
.brand-title{ font-weight: 750; letter-spacing: 0.2px; }
.brand-subtitle{ font-size: 0.85rem; color: var(--muted); margin-top: -2px; }

.nav{
  flex: 1;
  display: flex;
  justify-content: center;
}
.nav-toggle{
  display: none;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  border-radius: 14px;
  padding: 0.55rem 0.8rem;
  cursor: pointer;
}
.nav-menu{
  display: flex;
  gap: 1rem;
  align-items: center;
  padding: 0.55rem 0.75rem;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: var(--surface);
}
.nav-menu a{
  padding: 0.35rem 0.6rem;
  border-radius: 12px;
}
.nav-menu a:hover{
  background: var(--surface-2);
  text-decoration: none;
}

/* =========
   Buttons
   ========= */
.btn{
  border: 1px solid transparent;
  border-radius: 16px;
  padding: 0.7rem 0.95rem;
  font-weight: 650;
  cursor: pointer;
  display: inline-flex;
  gap: 0.5rem;
  align-items: center;
  justify-content: center;
  transition: transform 120ms ease, background 120ms ease, border-color 120ms ease;
  user-select: none;
}
.btn:active{ transform: translateY(1px); }

.btn-primary{
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: white;
  box-shadow: var(--shadow);
}
.btn-primary:hover{ text-decoration: none; filter: brightness(1.03); }

.btn-secondary{
  background: var(--surface);
  color: var(--text);
  border-color: var(--border);
}
.btn-secondary:hover{ background: var(--surface-2); text-decoration: none; }

.btn-ghost{
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}
.btn-ghost:hover{ background: var(--surface); text-decoration: none; }

/* =========
   Hero
   ========= */
.hero{ padding: 2.4rem 0 1.6rem; }
.hero-grid{
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  gap: 1.4rem;
  align-items: start;
}
h1{ font-size: clamp(2rem, 3vw, 3rem); line-height: 1.15; margin: 0 0 0.6rem; }
.lead{ font-size: 1.05rem; color: var(--muted); max-width: 62ch; }

.hero-actions{ display: flex; gap: 0.75rem; flex-wrap: wrap; margin: 1.2rem 0; }

.hero-aside{
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: var(--radius);
  padding: 1rem;
  box-shadow: var(--shadow);
}

.stat-grid{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.8rem;
}
.stat{
  padding: 0.85rem;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: rgba(0,0,0,0.12);
}
:root[data-theme="light"] .stat{ background: rgba(255,255,255,0.55); }
.stat-num{ font-weight: 800; }
.stat-label{ color: var(--muted); font-size: 0.9rem; }

.callout{
  margin-top: 0.9rem;
  border-radius: 16px;
  padding: 0.9rem;
  border: 1px dashed rgba(124,92,255,0.45);
  background: rgba(124,92,255,0.10);
}
.h3{ margin: 0 0 0.4rem; font-size: 1.05rem; }

.tip-card{
  margin-top: 1rem;
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: var(--radius);
  padding: 0.95rem;
  max-width: 720px;
}
.tip-label{ font-size: 0.85rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.1em; }
.tip-text{ font-weight: 650; margin-top: 0.25rem; }
.tip-actions{ display: flex; gap: 0.5rem; margin-top: 0.65rem; flex-wrap: wrap; }

/* =========
   Sections
   ========= */
.section{ padding: 2.2rem 0; }
.section-alt{ background: rgba(0,0,0,0.10); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
:root[data-theme="light"] .section-alt{ background: rgba(255,255,255,0.5); }

.section-head{
  margin-bottom: 1rem;
}
h2{ margin: 0 0 0.2rem; font-size: 1.7rem; }
.muted{ color: var(--muted); }
.small{ font-size: 0.9rem; }

.cards{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}
.card{
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: var(--radius);
  padding: 1rem;
  box-shadow: var(--shadow);
}
.card h3{ margin: 0 0 0.5rem; }
.card ul{ margin: 0; padding-left: 1.2rem; }

.two-col{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
.panel{
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: var(--radius);
  padding: 1rem;
}
.chips{ display: flex; gap: 0.5rem; flex-wrap: wrap; margin: 0.8rem 0 1rem; }
.chip{
  border: 1px solid var(--border);
  background: var(--surface-2);
  padding: 0.35rem 0.6rem;
  border-radius: 999px;
  font-size: 0.9rem;
}

/* =========
   Form
   ========= */
.form{
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: var(--radius);
  padding: 1rem;
  box-shadow: var(--shadow);
}
.form-row{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.85rem;
  align-items: end;
}
label{ display: grid; gap: 0.35rem; font-weight: 650; }
input, textarea{
  width: 100%;
  padding: 0.8rem 0.85rem;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: rgba(0,0,0,0.12);
  color: var(--text);
  outline: none;
}
:root[data-theme="light"] input, :root[data-theme="light"] textarea{ background: rgba(255,255,255,0.7); }
input:focus, textarea:focus{ border-color: rgba(124,92,255,0.65); box-shadow: 0 0 0 4px rgba(124,92,255,0.16); }

.field-hint{ color: var(--muted); font-weight: 500; font-size: 0.85rem; }
.checkbox{ grid-template-columns: 18px 1fr; align-items: center; gap: 0.55rem; font-weight: 600; }
.checkbox input{ width: 18px; height: 18px; margin: 0; }

.form-status{ margin-top: 0.75rem; min-height: 1.3rem; font-weight: 650; }
.form-status.ok{ color: #66ffb3; }
.form-status.err{ color: #ff8aa3; }

/* =========
   Footer
   ========= */
.site-footer{
  border-top: 1px solid var(--border);
  padding: 1.2rem 0 2rem;
}
.footer-grid{
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}
.footer-title{ font-weight: 800; }
.footer-links{ display: flex; gap: 1rem; align-items: center; flex-wrap: wrap; }

/* =========
   Cookie banner + Toast
   ========= */
.cookie-banner{
  position: fixed;
  left: 1rem;
  right: 1rem;
  bottom: 1rem;
  display: none;
  gap: 0.8rem;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: rgba(0,0,0,0.55);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow);
}
:root[data-theme="light"] .cookie-banner{ background: rgba(247,248,254,0.85); }
.cookie-banner.show{ display: flex; }
.cookie-text{ color: var(--muted); max-width: 65ch; }
.cookie-actions{ display: flex; gap: 0.5rem; flex-wrap: wrap; }

.toast{
  position: fixed;
  top: 84px;
  right: 1rem;
  min-width: 220px;
  max-width: 420px;
  opacity: 0;
  transform: translateY(-8px);
  pointer-events: none;
  padding: 0.85rem 0.95rem;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: rgba(0,0,0,0.55);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow);
  transition: opacity 160ms ease, transform 160ms ease;
}
:root[data-theme="light"] .toast{ background: rgba(247,248,254,0.88); }
.toast.show{
  opacity: 1;
  transform: translateY(0);
}

/* =========
   Responsive breakpoints
   ========= */
@media (max-width: 900px){
  .hero-grid{ grid-template-columns: 1fr; }
  .cards{ grid-template-columns: 1fr; }
  .two-col{ grid-template-columns: 1fr; }
  .form-row{ grid-template-columns: 1fr; }
  .brand{ min-width: auto; }
  .nav{ justify-content: flex-start; }

  .nav-toggle{ display: inline-flex; }
  .nav-menu{
    display: none;
    position: absolute;
    top: 68px;
    left: 1rem;
    right: 1rem;
    flex-direction: column;
    align-items: stretch;
    gap: 0.25rem;
    padding: 0.65rem;
  }
  .nav-menu.show{ display: flex; }
  .nav-menu a{ padding: 0.6rem 0.7rem; }
}