/* =============================================================================
   agentverif.com — Shared Design System
   All pages import this file.
   ============================================================================= */

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

/* --- CSS Variables --- */
:root {
  --bg:            #ffffff;
  --primary:       #16a34a;
  --primary-dark:  #15803d;
  --primary-light: #22c55e;
  --accent:        #dcfce7;
  --accent-mid:    #bbf7d0;
  --text:          #111827;
  --text-muted:    #6b7280;
  --text-light:    #9ca3af;
  --border:        #e5e7eb;
  --surface:       #f9fafb;
  --danger:        #dc2626;
  --danger-bg:     #fef2f2;
  --danger-border: #fca5a5;
  --warn-bg:       #fffbeb;
  --warn-border:   #fde68a;
  --warn-text:     #92400e;
  --shadow-xs:     0 1px 2px rgba(0,0,0,0.05);
  --shadow-sm:     0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md:     0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -1px rgba(0,0,0,0.04);
  --shadow-lg:     0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -2px rgba(0,0,0,0.04);
  --radius-sm:     6px;
  --radius-md:     10px;
  --radius-lg:     16px;
  --radius-xl:     24px;
  --font:          'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  --font-mono:     'Fira Code', 'Cascadia Code', 'SF Mono', Consolas, 'Liberation Mono', monospace;
  --max-w:         1080px;
  --header-h:      64px;
  --transition:    0.15s ease;
}

/* --- Reset --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; font-size: 16px; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button, input, select, textarea { font-family: var(--font); }
button { cursor: pointer; border: none; background: none; }
:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }

/* --- Layout --- */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 28px;
}

/* ========================= HEADER ========================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  height: var(--header-h);
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-xs);
}
.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.125rem;
  letter-spacing: -0.03em;
  color: var(--text);
}
.logo:hover { opacity: 0.85; }
.logo-wordmark { color: var(--text); }
/* Nav */
.site-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}
.site-nav a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);
  padding: 7px 13px;
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
}
.site-nav a:hover { color: var(--text); background: var(--accent); }
.nav-cta {
  font-weight: 600 !important;
  color: var(--primary) !important;
  border: 1.5px solid var(--primary) !important;
  padding: 7px 16px !important;
  border-radius: var(--radius-sm) !important;
  transition: background var(--transition), color var(--transition) !important;
}
.nav-cta:hover { background: var(--primary) !important; color: #fff !important; }
/* Mobile menu */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  border-radius: var(--radius-sm);
  background: transparent;
  cursor: pointer;
}
.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all 0.2s;
}

/* ========================= FOOTER ========================= */
.site-footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 32px 0;
  text-align: center;
}
.site-footer p {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.8;
}
.site-footer a { color: var(--primary); transition: opacity var(--transition); }
.site-footer a:hover { opacity: 0.75; text-decoration: underline; }

/* ========================= SECTIONS ========================= */
.section { padding: 96px 0; }
.section-sm { padding: 56px 0; }
.section-xs { padding: 40px 0; }
.section-alt { background: var(--surface); }
.section-accent { background: var(--accent); }

.section-tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--primary);
  background: var(--accent);
  padding: 3px 12px;
  border-radius: 99px;
  margin-bottom: 18px;
}
.section-title {
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1.2;
  color: var(--text);
  margin-bottom: 14px;
}
.section-subtitle {
  font-size: 1.0625rem;
  color: var(--text-muted);
  line-height: 1.65;
  max-width: 540px;
}
.section-header { margin-bottom: 56px; }
.section-header.centered {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* ========================= BUTTONS ========================= */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9375rem;
  font-weight: 600;
  padding: 13px 26px;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  line-height: 1;
  text-decoration: none;
  white-space: nowrap;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}
.btn-primary:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(22,163,74,0.3);
}
.btn-secondary {
  background: transparent;
  color: var(--primary);
  border-color: var(--primary);
}
.btn-secondary:hover {
  background: var(--accent);
  transform: translateY(-1px);
}
.btn-lg { font-size: 1rem; padding: 15px 30px; }
.btn-full { width: 100%; justify-content: center; }
.btn-sm { font-size: 0.875rem; padding: 9px 18px; }

/* ========================= CARDS ========================= */
.card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
}
.card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }

/* ========================= GRIDS ========================= */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }

/* ========================= CODE BLOCK ========================= */
.code-block {
  display: inline-flex;
  align-items: center;
  background: #1e2433;
  border-radius: var(--radius-sm);
  padding: 13px 18px;
  gap: 14px;
  max-width: 100%;
}
.code-block code {
  font-family: var(--font-mono);
  font-size: 0.9375rem;
  color: #a3e635;
  white-space: nowrap;
}
.copy-btn {
  font-size: 0.78rem;
  font-weight: 600;
  color: #94a3b8;
  padding: 4px 10px;
  border-radius: 4px;
  border: 1px solid #374151;
  background: transparent;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
  font-family: var(--font);
}
.copy-btn:hover { color: #fff; border-color: #6b7280; }
.copy-btn.copied { color: #a3e635; border-color: #a3e635; }

/* ========================= FORM ========================= */
.form-group { margin-bottom: 20px; }
.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text);
}
.form-input {
  width: 100%;
  padding: 13px 16px;
  font-size: 1rem;
  font-family: var(--font);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  background: #fff;
  color: var(--text);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
  appearance: none;
}
.form-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(22,163,74,0.12);
}
.form-input::placeholder { color: var(--text-light); }
.form-hint {
  margin-top: 5px;
  font-size: 0.8125rem;
  color: var(--text-muted);
}

/* ========================= RESULT CARD ========================= */
.result-card { display: none; margin-top: 28px; }
.result-card.visible { display: block; }

.result-verified {
  background: #f0fdf4;
  border: 1.5px solid var(--accent-mid);
  border-radius: var(--radius-md);
  padding: 28px;
}
.result-revoked {
  background: var(--danger-bg);
  border: 1.5px solid var(--danger-border);
  border-radius: var(--radius-md);
  padding: 28px;
}
.result-notfound {
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-md);
  padding: 28px;
}
.result-error {
  background: var(--warn-bg);
  border: 1.5px solid var(--warn-border);
  border-radius: var(--radius-md);
  padding: 28px;
}

/* Status badge */
.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  padding: 4px 12px;
  border-radius: 99px;
  margin-bottom: 16px;
}
.status-verified-pill  { background: var(--accent); color: #15803d; }
.status-revoked-pill   { background: #fee2e2; color: #b91c1c; }
.status-notfound-pill  { background: #f3f4f6; color: #6b7280; }
.status-error-pill     { background: var(--warn-bg); color: var(--warn-text); }

/* Result detail rows */
.result-meta { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 24px; margin-top: 16px; }
.meta-item { }
.meta-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 2px;
}
.meta-value {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text);
  word-break: break-all;
}
.result-badge-block {
  margin-top: 20px;
  padding: 14px 18px;
  background: rgba(255,255,255,0.7);
  border-radius: var(--radius-sm);
  border: 1px solid var(--accent-mid);
  font-family: var(--font-mono);
  font-size: 0.9375rem;
  color: #166534;
}
.result-title {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--text);
}
.result-subtitle {
  font-size: 0.9375rem;
  color: var(--text-muted);
}

/* ========================= BADGE CHIP ========================= */
.badge-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8125rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 99px;
  background: var(--accent);
  color: var(--primary);
}

/* ========================= DIVIDER ========================= */
.divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 0;
}

/* ========================= UTILITIES ========================= */
.text-center { text-align: center; }
.text-muted  { color: var(--text-muted); }
.mt-4  { margin-top: 16px; }
.mt-6  { margin-top: 24px; }
.mt-8  { margin-top: 32px; }
.mb-4  { margin-bottom: 16px; }
.hidden { display: none !important; }

/* ========================= LOADING SPINNER ========================= */
.spinner {
  display: inline-block;
  width: 18px; height: 18px;
  border: 2.5px solid rgba(255,255,255,0.4);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ========================= RESPONSIVE ========================= */
@media (max-width: 900px) {
  .grid-3 { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  :root { --header-h: 60px; }
  .container { padding: 0 20px; }
  .section { padding: 64px 0; }
  .section-sm { padding: 40px 0; }
  .grid-3 { grid-template-columns: 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
  .result-meta { grid-template-columns: 1fr; }

  /* Mobile nav */
  .site-nav {
    display: none;
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    padding: 12px 20px;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    box-shadow: var(--shadow-md);
  }
  .site-nav.open { display: flex; }
  .site-nav a { padding: 10px 12px; border-radius: var(--radius-sm); }
  .menu-toggle { display: flex; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .section { padding: 48px 0; }
  .btn-lg { padding: 13px 22px; font-size: 0.9375rem; }
}