/* ═══════════════════════════════════════════════════
   AlexAI Design System — theme.css
   Linked by every page. Per-page <style> blocks
   contain only page-specific rules.
   Cascade: theme.css first → inline <style> overrides.
   ═══════════════════════════════════════════════════ */

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

body {
  font-family: 'Inter', system-ui, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }

/* ── Design Tokens ── */
:root {
  --orange:       #ea580c;
  --orange-dark:  #c2410c;
  --amber:        #d97706;
  --text:         #0f172a;
  --muted:        #64748b;
  --subtle:       #94a3b8;
  --border:       rgba(0,0,0,0.08);
  --border-input: rgba(0,0,0,0.12);

  --radius-sm:   10px;
  --radius-md:   12px;
  --radius-lg:   20px;
  --radius-pill: 999px;

  --shadow-btn:  0 4px 16px rgba(234,88,12,0.35);
  --shadow-card: 0 4px 20px rgba(0,0,0,0.08);
  --shadow-nav:  0 2px 12px rgba(0,0,0,0.06);
}

/* ── Scrollbars ── */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(0,0,0,0.12); border-radius: 99px; }
::-webkit-scrollbar-thumb:hover { background: rgba(0,0,0,0.2); }

/* ── Animations ── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes shake {
  0%,100% { transform: translateX(0); }
  20%,60%  { transform: translateX(-6px); }
  40%,80%  { transform: translateX(6px); }
}
.fade-up { animation: fadeUp 0.3s ease both; }
.shake   { animation: shake 0.4s ease; }

/* ── Glass surfaces ── */
.glass {
  background: rgba(255,255,255,0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.glass-nav {
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-nav);
}

.glass-input {
  background: rgba(255,255,255,0.8);
  border: 1px solid var(--border-input);
  border-radius: var(--radius-sm);
  color: var(--text);
  padding: 10px 14px;
  font-size: 0.85rem;
  font-family: inherit;
  width: 100%;
  transition: border-color 0.2s, background 0.2s;
}
.glass-input:focus {
  border-color: rgba(234,88,12,0.5);
  background: rgba(255,255,255,0.95);
  outline: none;
}
.glass-input::placeholder { color: var(--subtle); }

/* ── Nav ── */
/* nav element mirrors .glass-nav values. Both exist so pages using
   semantic <nav> elements AND pages using <div class="glass-nav">
   get identical glass treatment without requiring an extra class. */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 50;
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-nav);
}
.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}
.logo-mark {
  width: 32px; height: 32px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--orange), var(--amber));
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 14px;
  color: white;
  box-shadow: 0 4px 12px rgba(234,88,12,0.4);
  flex-shrink: 0;
}
.nav-brand {
  font-weight: 700;
  font-size: 0.875rem;
  color: var(--text);
  letter-spacing: -0.01em;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-links a {
  font-size: 0.875rem;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.15s;
}
.nav-links a:hover { color: var(--text); }
.nav-links a.active { color: var(--text); font-weight: 500; }
.nav-cta {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  font-weight: 600;
  color: white;
  text-decoration: none;
  padding: 8px 16px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--orange), var(--amber));
  box-shadow: 0 4px 12px rgba(234,88,12,0.3);
  transition: opacity 0.15s, transform 0.1s;
}
.nav-cta:hover { opacity: 0.9; transform: translateY(-1px); }
@media (max-width: 640px) { .nav-links { display: none; } }

/* ── Cards ── */
.card {
  background: rgba(255,255,255,0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: 32px;
}
.card-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
}
.card-subtitle {
  font-size: 0.8125rem;
  color: var(--subtle);
  margin-bottom: 24px;
}
.card-footer {
  text-align: center;
  font-size: 0.75rem;
  color: var(--muted);
  margin-top: 20px;
}
.card-footer a {
  color: var(--orange);
  text-decoration: none;
  transition: color 0.15s;
}
.card-footer a:hover { color: var(--orange-dark); }
.page-footer {
  text-align: center;
  font-size: 0.72rem;
  color: var(--subtle);
  margin-top: 24px;
}

/* ── Logo block (auth pages) ── */
.logo-block {
  text-align: center;
  margin-bottom: 28px;
}
.logo-block a { text-decoration: none; }
.logo-hero {
  width: 64px; height: 64px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--orange), var(--amber));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  font-weight: 800;
  color: white;
  box-shadow: 0 8px 32px rgba(234,88,12,0.45);
  margin: 0 auto 14px;
}
.logo-block h1 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.02em;
}
.logo-block p {
  font-size: 0.875rem;
  color: var(--subtle);
  margin-top: 4px;
}

/* ── Buttons ── */
/* Note: width is NOT set here — pages add width:100% locally if needed */
.btn-primary {
  background: linear-gradient(135deg, var(--orange), var(--amber));
  border-radius: var(--radius-md);
  color: #fff;
  font-weight: 600;
  font-family: inherit;
  border: none;
  cursor: pointer;
  box-shadow: var(--shadow-btn);
  transition: opacity 0.2s, transform 0.2s, box-shadow 0.15s;
}
.btn-primary:hover:not(:disabled) {
  opacity: 0.9;
  transform: translateY(-1px);
  box-shadow: 0 8px 28px rgba(234,88,12,0.5);
}
.btn-primary:active:not(:disabled) { transform: translateY(0); }
.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

.btn-secondary {
  background: rgba(0,0,0,0.05);
  border: 1px solid rgba(0,0,0,0.1);
  border-radius: var(--radius-md);
  color: #334155;
  cursor: pointer;
  font-family: inherit;
  transition: background 0.2s, color 0.2s;
}
.btn-secondary:hover { background: rgba(0,0,0,0.09); color: var(--text); }

/* ── Alerts ── */
.alert {
  display: none;
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-size: 0.82rem;
  margin-bottom: 20px;
  align-items: flex-start;
  gap: 8px;
}
.alert.visible { display: flex; }
.alert-error   { background: rgba(239,68,68,0.08);  border: 1px solid rgba(239,68,68,0.25);  color: #dc2626; }
.alert-success { background: rgba(5,150,105,0.08);  border: 1px solid rgba(5,150,105,0.2);   color: #065f46; }
.alert-warning { background: rgba(245,158,11,0.08); border: 1px solid rgba(245,158,11,0.25); color: #92400e; }

/* ── Form inputs (auth pages) ── */
input[type="text"],
input[type="password"],
input[type="email"] {
  width: 100%;
  background: rgba(255,255,255,0.8);
  border: 1px solid var(--border-input);
  border-radius: var(--radius-md);
  color: var(--text);
  padding: 12px 16px;
  font-size: 0.875rem;
  font-family: inherit;
  transition: border-color 0.2s, background 0.2s;
}
input[type="text"]:focus,
input[type="password"]:focus,
input[type="email"]:focus {
  border-color: rgba(234,88,12,0.6);
  background: rgba(255,255,255,0.95);
  outline: none;
}
input::placeholder { color: var(--subtle); }
input.has-toggle { padding-right: 40px; }

.pw-toggle {
  position: absolute;
  right: 12px; top: 50%;
  transform: translateY(-50%);
  background: none; border: none;
  cursor: pointer;
  color: var(--subtle);
  font-size: 0.875rem;
  transition: color 0.15s;
  padding: 4px; line-height: 1;
}
.pw-toggle:hover { color: var(--muted); }

.field { margin-bottom: 16px; }
.field label {
  display: block;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--muted);
  margin-bottom: 6px;
}

/* ══════════════════════════════════════
   Dark mode — shared component overrides
   No !important needed: per-page <style>
   blocks are inline and come after this
   file in the cascade.
   ══════════════════════════════════════ */
[data-theme="dark"] body {
  background: radial-gradient(ellipse at 15% 10%, #1e0a3c 0%, #080d1a 55%, #020918 100%);
  color: #cbd5e1;
}
[data-theme="dark"] h1,
[data-theme="dark"] h2,
[data-theme="dark"] h3 { color: #e2e8f0; }

[data-theme="dark"] .glass {
  background: rgba(5,10,25,0.6);
  border-color: rgba(255,255,255,0.08);
}
[data-theme="dark"] .glass-nav {
  background: rgba(5,10,25,0.75);
  border-bottom-color: rgba(255,255,255,0.08);
}
[data-theme="dark"] .glass-input {
  background: rgba(255,255,255,0.05);
  border-color: rgba(255,255,255,0.1);
  color: #f1f5f9;
}
[data-theme="dark"] .glass-input:focus { background: rgba(255,255,255,0.08); }

[data-theme="dark"] nav {
  background: rgba(5,10,25,0.75);
  border-bottom-color: rgba(255,255,255,0.08);
}
[data-theme="dark"] .nav-brand { color: #e2e8f0; }
[data-theme="dark"] .nav-links a { color: #94a3b8; }
[data-theme="dark"] .nav-links a:hover { color: #e2e8f0; }
[data-theme="dark"] .nav-links a.active { color: #e2e8f0; }

[data-theme="dark"] .card {
  background: rgba(5,10,25,0.6);
  border-color: rgba(255,255,255,0.08);
}
[data-theme="dark"] .card-title  { color: #e2e8f0; }
[data-theme="dark"] .card-subtitle { color: #94a3b8; }
[data-theme="dark"] .card-footer { color: #64748b; }
[data-theme="dark"] .page-footer { color: #64748b; }
[data-theme="dark"] .logo-block h1 { color: #e2e8f0; }

[data-theme="dark"] .btn-secondary {
  background: rgba(255,255,255,0.05);
  border-color: rgba(255,255,255,0.1);
  color: #94a3b8;
}
[data-theme="dark"] .btn-secondary:hover {
  background: rgba(255,255,255,0.09);
  color: #e2e8f0;
}

[data-theme="dark"] input[type="text"],
[data-theme="dark"] input[type="password"],
[data-theme="dark"] input[type="email"] {
  background: rgba(255,255,255,0.05);
  border-color: rgba(255,255,255,0.1);
  color: #f1f5f9;
}
[data-theme="dark"] input[type="text"]:focus,
[data-theme="dark"] input[type="password"]:focus,
[data-theme="dark"] input[type="email"]:focus { background: rgba(255,255,255,0.08); }
[data-theme="dark"] .field label { color: #94a3b8; }