/* ============================================================
   Preframed — style.css
   Font: DM Sans (loaded via <link> in base.html)
   ============================================================ */

/* ── Custom properties ─────────────────────────────────────── */
:root {
  --bg: #F5F5F0;
  --bg-hero: #0A0F1E;
  --text: #1A1A2E;
  --text-muted: #6B6B80;
  --accent: #FF5A1F;
  --accent-hover: #E04A10;
  --white: #FFFFFF;
  --border: #E2E2DC;
  --danger: #D72638;
  --danger-hover: #B51E2E;
  --warning-bg: #FFF8E1;
  --warning-border: #FFD600;
  --error-bg: #FFF0EE;
  --error-border: #FF5A1F;
  --success-bg: #E8F5E9;
  --success-border: #43A047;
  --card-bg: #FFFFFF;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.10);
  --radius: 8px;
  --radius-lg: 12px;
  --font: 'DM Sans', system-ui, sans-serif;
  --nav-h: 60px;
  --container: 1100px;
  --container-sm: 600px;
}

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

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}

a {
  color: var(--accent);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}

img, svg {
  display: block;
  max-width: 100%;
}

/* ── Layout helpers ─────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 24px;
}

.container-sm {
  max-width: var(--container-sm);
}

.page-container {
  padding-top: 48px;
  padding-bottom: 80px;
}

/* ── Navigation ─────────────────────────────────────────────── */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--white);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  height: var(--nav-h);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 24px;
}

.nav-logo {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.02em;
  text-decoration: none;
}
.nav-logo:hover {
  text-decoration: none;
  color: var(--text);
}

.logo-dot {
  color: var(--accent);
}

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

/* ── Buttons ────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-family: var(--font);
  font-size: 0.9rem;
  font-weight: 500;
  line-height: 1;
  padding: 10px 20px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.15s, color 0.15s, border-color 0.15s, opacity 0.15s;
  white-space: nowrap;
}

.btn:hover {
  text-decoration: none;
}

.btn-primary {
  background: var(--accent);
  color: var(--white);
  border-color: var(--accent);
}
.btn-primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  color: var(--white);
}

.btn-secondary {
  background: var(--white);
  color: var(--text);
  border-color: var(--border);
}
.btn-secondary:hover {
  background: var(--bg);
  color: var(--text);
}

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border-color: transparent;
}
.btn-ghost:hover {
  background: var(--bg);
  color: var(--text);
}

.btn-danger {
  background: var(--danger);
  color: var(--white);
  border-color: var(--danger);
}
.btn-danger:hover {
  background: var(--danger-hover);
  border-color: var(--danger-hover);
  color: var(--white);
}

.btn-sm {
  font-size: 0.8rem;
  padding: 7px 14px;
}

.btn-lg {
  font-size: 1rem;
  padding: 14px 28px;
}

.btn:disabled,
.btn.loading {
  opacity: 0.6;
  cursor: not-allowed;
  pointer-events: none;
}

/* ── Hero section ───────────────────────────────────────────── */
.hero {
  background: var(--bg-hero);
  color: var(--white);
  padding: 100px 0 80px;
}

.hero-title {
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.03em;
  max-width: 700px;
  margin-bottom: 20px;
}

.hero-sub {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.65);
  max-width: 480px;
  margin-bottom: 36px;
}

.login-form {
  max-width: 500px;
}

.input-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.input-row .input {
  flex: 1;
  min-width: 220px;
}

/* ── Form elements ──────────────────────────────────────────── */
.input {
  font-family: var(--font);
  font-size: 0.95rem;
  color: var(--text);
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 14px;
  width: 100%;
  transition: border-color 0.15s, box-shadow 0.15s;
  outline: none;
}

.input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(255, 90, 31, 0.12);
}

.input::placeholder {
  color: var(--text-muted);
}

/* Hero input override — dark background */
.hero .input {
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.2);
  color: var(--white);
}
.hero .input::placeholder {
  color: rgba(255,255,255,0.4);
}
.hero .input:focus {
  border-color: var(--accent);
  background: rgba(255,255,255,0.12);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 24px;
}

.form-label {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text);
}

.input-meta {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.counter {
  font-variant-numeric: tabular-nums;
}
.counter.warn {
  color: var(--accent);
  font-weight: 600;
}

/* ── Alerts ─────────────────────────────────────────────────── */
.alert {
  padding: 12px 16px;
  border-radius: var(--radius);
  font-size: 0.9rem;
  border-left: 3px solid;
  margin-bottom: 20px;
}

.alert-error {
  background: var(--error-bg);
  border-color: var(--accent);
  color: #7A2000;
}

.alert-warning {
  background: var(--warning-bg);
  border-color: var(--warning-border);
  color: #5C4000;
}

.alert-success {
  background: var(--success-bg);
  border-color: var(--success-border);
  color: #1B5E20;
}

/* ── Page header ────────────────────────────────────────────── */
.page-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.page-header h1 {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

/* ── Dashboard sets grid ────────────────────────────────────── */
.sets-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

.set-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 20px;
  transition: box-shadow 0.15s;
}

.set-card:hover {
  box-shadow: var(--shadow-md);
}

.set-card-body {
  margin-bottom: 16px;
}

.set-name {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 4px;
}

.set-date {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.set-card-actions {
  display: flex;
  gap: 8px;
  align-items: center;
}

/* ── Empty state ────────────────────────────────────────────── */
.empty-state {
  text-align: center;
  padding: 80px 24px;
  color: var(--text-muted);
}

.empty-state p {
  font-size: 1.1rem;
  margin-bottom: 20px;
}

/* ── Centered section (check email, messages) ───────────────── */
.centered-section {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: calc(100vh - var(--nav-h));
  padding: 48px 24px;
}

.message-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: 40px;
  max-width: 480px;
  width: 100%;
}

.message-card h1 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.message-card p {
  margin-bottom: 12px;
  color: var(--text);
}

/* ── Landing questions preview ──────────────────────────────── */
.questions-preview {
  padding: 80px 0;
  background: var(--bg);
}

.section-title {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}

.section-sub {
  color: var(--text-muted);
  font-size: 1rem;
  margin-bottom: 40px;
  max-width: 560px;
}

.questions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}

.question-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}

.question-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-bottom: 8px;
}

.question-text {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  line-height: 1.4;
  margin-bottom: 8px;
}

.question-explanation {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* ── View set — question list ───────────────────────────────── */
.questions-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.question-item {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  box-shadow: var(--shadow-sm);
}

.question-header {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 10px;
  flex-wrap: wrap;
}

.question-category {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--accent);
  white-space: nowrap;
  flex-shrink: 0;
}

.question-abstract {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-style: italic;
  line-height: 1.4;
}

.question-concrete {
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--text);
  line-height: 1.5;
}

/* ── Back link ──────────────────────────────────────────────── */
.back-link {
  display: inline-block;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 8px;
  text-decoration: none;
}
.back-link:hover {
  color: var(--text);
  text-decoration: none;
}

/* ── Utility ────────────────────────────────────────────────── */
.text-muted {
  color: var(--text-muted);
}

.text-sm {
  font-size: 0.85rem;
}

/* ── Responsive — 768px ─────────────────────────────────────── */
@media (max-width: 768px) {
  .hero {
    padding: 60px 0 50px;
  }

  .hero-title {
    font-size: 1.6rem;
  }

  .input-row {
    flex-direction: column;
  }

  .input-row .input {
    min-width: 0;
  }

  .page-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .sets-grid {
    grid-template-columns: 1fr;
  }

  .questions-grid {
    grid-template-columns: 1fr;
  }

  .question-header {
    flex-direction: column;
    gap: 4px;
  }

  .message-card {
    padding: 28px 20px;
  }

  .page-container {
    padding-top: 32px;
    padding-bottom: 48px;
  }

  .btn-lg {
    width: 100%;
  }
}