/* ==========================================================================
   SEO Content Brief Generator — design tokens & base
   Display: Outfit / Body: Inter
   ========================================================================== */
:root {
  --bg: #FAF9F6;
  --bg-elevated: #FFFFFF;
  --bg-sunken: #F1EFE9;
  --ink: #171A21;
  --ink-soft: #565B66;
  --border: #E4E1D8;
  --accent: #4C4FE0;
  --accent-ink: #FFFFFF;
  --accent-soft: #EDEDFC;
  --gold: #C8862E;
  --success: #1F8A5F;
  --danger: #C43D3D;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow: 0 8px 30px rgba(23, 26, 33, 0.08);
  --font-display: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;
  --max-w: 1180px;
}

[data-theme="dark"] {
  --bg: #12131A;
  --bg-elevated: #191B24;
  --bg-sunken: #0D0E13;
  --ink: #F1F1EF;
  --ink-soft: #A2A6B4;
  --border: #2A2D3A;
  --accent: #7B7EFA;
  --accent-ink: #12131A;
  --accent-soft: #23243A;
  --gold: #E3A84C;
  --shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background .2s ease, color .2s ease;
}
img { max-width: 100%; display: block; }
h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 700; line-height: 1.15; margin: 0 0 .5em; color: var(--ink); }
p { margin: 0 0 1em; color: var(--ink-soft); }
a { color: inherit; text-decoration: none; }
button { font-family: var(--font-body); cursor: pointer; }

.skip-link {
  position: absolute; left: -999px; top: 0; background: var(--accent); color: var(--accent-ink);
  padding: 10px 16px; z-index: 999; border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }

.eyebrow { font-size: .8rem; letter-spacing: .12em; text-transform: uppercase; color: var(--accent); font-weight: 600; margin: 0 0 .6em; }
.center { text-align: center; margin-left: auto; margin-right: auto; }
.section-inner { max-width: var(--max-w); margin: 0 auto; padding: 72px 24px; }
.section-inner.narrow { max-width: 780px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 24px; border-radius: 999px; font-weight: 600; font-size: .95rem;
  border: 1px solid transparent; transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { box-shadow: 0 6px 18px rgba(76,79,224,.35); }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--border); }
.btn-ghost:hover { background: var(--bg-sunken); }
.btn-ghost-invert { background: transparent; color: #fff; border-color: rgba(255,255,255,.4); }
.btn-ghost-invert:hover { background: rgba(255,255,255,.12); }
.btn-secondary { background: var(--accent-soft); color: var(--accent); }
.btn-secondary:hover { filter: brightness(0.97); }
.btn[disabled] { opacity: .6; cursor: not-allowed; }

/* ============== HEADER ============== */
.site-header {
  position: sticky; top: 0; z-index: 50; background: var(--bg);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  max-width: var(--max-w); margin: 0 auto; padding: 14px 24px;
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
}
.brand { display: flex; align-items: center; gap: 10px; font-family: var(--font-display); font-weight: 700; }
.brand-mark {
  display: inline-flex; align-items: center; justify-content: center;
  width: 34px; height: 34px; border-radius: 9px; background: var(--accent); color: var(--accent-ink);
  font-size: .75rem; letter-spacing: .02em;
}
.brand-name { font-size: 1.05rem; }

.main-nav ul { list-style: none; display: flex; gap: 4px; margin: 0; padding: 0; }
.nav-link {
  background: none; border: none; color: var(--ink); font-size: .92rem; font-weight: 500;
  padding: 10px 14px; border-radius: 8px; display: inline-flex; align-items: center; gap: 6px;
}
.nav-link:hover { background: var(--bg-sunken); }
.has-dropdown { position: relative; }
.dropdown-panel {
  position: absolute; top: 100% ; left: 0; background: var(--bg-elevated);
  border: 1px solid var(--border); border-radius: var(--radius-md); box-shadow: var(--shadow);
  padding: 10px; display: grid; grid-template-columns: repeat(2, minmax(190px, 1fr)); gap: 2px;
  opacity: 0; visibility: hidden; transform: translateY(4px); transition: .15s ease; min-width: 420px;
}
.has-dropdown.open .dropdown-panel,
.has-dropdown:hover .dropdown-panel { opacity: 1; visibility: visible; transform: translateY(0); }
.dropdown-panel a { padding: 8px 10px; border-radius: 6px; font-size: .88rem; color: var(--ink-soft); }
.dropdown-panel a:hover { background: var(--bg-sunken); color: var(--ink); }

.header-actions { display: flex; align-items: center; gap: 8px; }
.theme-toggle {
  width: 38px; height: 38px; border-radius: 50%; border: 1px solid var(--border); background: var(--bg-elevated);
  display: flex; align-items: center; justify-content: center; color: var(--ink);
}
.theme-toggle .icon-moon { display: none; }
[data-theme="dark"] .theme-toggle .icon-sun { display: none; }
[data-theme="dark"] .theme-toggle .icon-moon { display: block; }

.mobile-menu-toggle { display: none; width: 38px; height: 38px; border: none; background: none; flex-direction: column; justify-content: center; gap: 5px; }
.mobile-menu-toggle span { display: block; width: 20px; height: 2px; background: var(--ink); border-radius: 2px; }

/* ============== BREADCRUMB ============== */
.breadcrumb-bar { background: var(--bg-sunken); border-bottom: 1px solid var(--border); }
.breadcrumb-inner { max-width: var(--max-w); margin: 0 auto; padding: 10px 24px; font-size: .82rem; color: var(--ink-soft); display: flex; gap: 8px; flex-wrap: wrap; }
.breadcrumb-inner a:hover { color: var(--accent); }

/* ============== HERO ============== */
.hero {
  max-width: var(--max-w); margin: 0 auto; padding: 64px 24px 40px;
  display: grid; grid-template-columns: 1.1fr .9fr; gap: 40px; align-items: center;
}
.hero h1 { font-size: clamp(2rem, 4vw, 3rem); }
.accent { color: var(--accent); }
.hero-sub { font-size: 1.05rem; max-width: 52ch; }
.hero-cta-row { display: flex; gap: 12px; flex-wrap: wrap; margin: 24px 0 32px; }
.hero-stats { display: flex; gap: 32px; flex-wrap: wrap; }
.hero-stats div { display: flex; flex-direction: column; }
.hero-stats strong { font-family: var(--font-display); font-size: 1.3rem; }
.hero-stats span { font-size: .8rem; color: var(--ink-soft); }

.hero-visual { display: flex; justify-content: center; }
.brief-card-preview {
  width: 100%; max-width: 340px; background: var(--bg-elevated); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 26px; box-shadow: var(--shadow); display: flex; flex-direction: column; gap: 12px;
}
.bcp-row { border-radius: 6px; background: var(--bg-sunken); height: 12px; }
.bcp-title { height: 18px; width: 70%; background: var(--accent-soft); }
.bcp-line.short { width: 55%; }
.bcp-chip-row { display: flex; gap: 8px; margin: 4px 0; }
.bcp-chip { height: 22px; width: 60px; border-radius: 999px; background: var(--accent-soft); }

/* ============== TOOL FORM ============== */
.tool-section { background: var(--bg-elevated); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.tool-inner { max-width: 820px; margin: 0 auto; padding: 64px 24px; }
.tool-intro { margin-bottom: 28px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.field-full { grid-column: 1 / -1; }
.field { display: flex; flex-direction: column; gap: 6px; }
label { font-size: .88rem; font-weight: 600; }
.req { color: var(--danger); }
.opt { color: var(--ink-soft); font-weight: 400; font-size: .8rem; }
input[type="text"], select, textarea {
  font-family: var(--font-body); font-size: .95rem; padding: 12px 14px; border-radius: var(--radius-sm);
  border: 1px solid var(--border); background: var(--bg); color: var(--ink); width: 100%;
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
input.invalid, textarea.invalid { border-color: var(--danger); }
.field-msg { font-size: .78rem; min-height: 1em; color: var(--danger); }
.field-msg.ok { color: var(--success); }

.btn-submit { margin-top: 24px; width: 100%; position: relative; }
.btn-spinner {
  width: 16px; height: 16px; border-radius: 50%; border: 2px solid rgba(255,255,255,.4);
  border-top-color: #fff; display: none; animation: spin .7s linear infinite;
}
.btn-submit.loading .btn-spinner { display: inline-block; }
.btn-submit.loading .btn-label { opacity: .85; }
@keyframes spin { to { transform: rotate(360deg); } }
.form-error { color: var(--danger); font-size: .88rem; min-height: 1em; margin-top: 12px; }

/* ============== RESULT ============== */
.result-section { margin-top: 48px; border-top: 1px dashed var(--border); padding-top: 40px; }
.result-header { display: flex; justify-content: space-between; align-items: baseline; flex-wrap: wrap; gap: 8px; margin-bottom: 16px; }
.result-meta { font-size: .8rem; color: var(--ink-soft); }
.brief-doc {
  background: var(--bg-sunken); border: 1px solid var(--border); border-radius: var(--radius-lg);
  padding: 28px; display: flex; flex-direction: column; gap: 22px;
}
.brief-block h4 { font-family: var(--font-display); font-size: 1rem; margin-bottom: 8px; color: var(--accent); }
.brief-block p, .brief-block li { color: var(--ink); }
.brief-block ul { margin: 0; padding-left: 20px; }
.chip-list { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; padding: 0; margin: 0; }
.chip-list li { background: var(--accent-soft); color: var(--accent); padding: 5px 12px; border-radius: 999px; font-size: .82rem; }
.outline-item { border-left: 2px solid var(--border); padding-left: 12px; margin-bottom: 10px; }
.outline-item.h3 { margin-left: 20px; border-left-color: var(--accent-soft); }
.outline-item strong { display: block; }
.outline-item span { font-size: .82rem; color: var(--ink-soft); }

.result-actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 20px; }
.copy-toast {
  display: block; margin-top: 8px; font-size: .82rem; color: var(--success); opacity: 0; transition: opacity .3s ease;
}
.copy-toast.show { opacity: 1; }

/* ============== FEATURES ============== */
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 36px; }
.feature-card { background: var(--bg-elevated); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 24px; }
.feature-icon { font-size: 1.4rem; color: var(--accent); margin-bottom: 10px; font-family: var(--font-display); }
.feature-card h3 { font-size: 1.05rem; }
.feature-card p { font-size: .9rem; margin: 0; }

/* ============== HOW IT WORKS ============== */
.how-it-works { background: var(--bg-sunken); }
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 36px; }
.step { background: var(--bg-elevated); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 22px; }
.step-num {
  display: inline-flex; align-items: center; justify-content: center; width: 30px; height: 30px;
  border-radius: 50%; background: var(--accent); color: var(--accent-ink); font-family: var(--font-display);
  font-weight: 700; font-size: .85rem; margin-bottom: 12px;
}
.step h3 { font-size: 1rem; }
.step p { font-size: .88rem; margin: 0; }

/* ============== ARTICLE ============== */
.article-section p { color: var(--ink); font-size: .98rem; }

/* ============== FAQ ============== */
.faq-list { margin-top: 28px; display: flex; flex-direction: column; gap: 10px; }
.faq-item { background: var(--bg-elevated); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 16px 20px; }
.faq-item summary { cursor: pointer; font-weight: 600; font-family: var(--font-display); list-style: none; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: '+'; float: right; color: var(--accent); font-size: 1.1rem; }
.faq-item[open] summary::after { content: '−'; }
.faq-item p { margin-top: 10px; font-size: .92rem; }

/* ============== CTA ============== */
.cta { background: #171A21; color: #fff; }
.cta h2 { color: #fff; }
.cta p { color: rgba(255,255,255,.75); }
.cta-buttons { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-top: 20px; }

/* ============== MORE TOOLS ============== */
.more-tools-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-top: 24px; }
.more-tools-grid a { font-size: .88rem; padding: 10px 14px; border: 1px solid var(--border); border-radius: 8px; color: var(--ink-soft); }
.more-tools-grid a:hover { border-color: var(--accent); color: var(--accent); }

/* ============== COOKIE BANNER ============== */
.cookie-banner {
  position: fixed; bottom: 16px; left: 16px; right: 16px; max-width: 560px; margin: 0 auto;
  background: var(--bg-elevated); border: 1px solid var(--border); border-radius: var(--radius-md);
  box-shadow: var(--shadow); padding: 18px 20px; z-index: 100;
}
.cookie-banner p { font-size: .85rem; margin: 0 0 12px; }
.cookie-actions { display: flex; gap: 10px; justify-content: flex-end; }

/* ============== FOOTER ============== */
.site-footer { background: var(--bg-sunken); border-top: 1px solid var(--border); }
.footer-inner { max-width: var(--max-w); margin: 0 auto; padding: 56px 24px 32px; display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 32px; }
.footer-col h4 { font-size: .82rem; text-transform: uppercase; letter-spacing: .06em; margin-bottom: 12px; color: var(--ink-soft); }
.footer-col a { display: block; font-size: .85rem; color: var(--ink-soft); padding: 4px 0; }
.footer-col a:hover { color: var(--accent); }
.footer-brand p { font-size: .85rem; }
.footer-links-inline { display: flex; gap: 14px; flex-wrap: wrap; }
.footer-links-inline a { font-size: .8rem; padding: 0; }
.footer-bottom { border-top: 1px solid var(--border); padding: 20px 24px 32px; max-width: var(--max-w); margin: 0 auto; }
.footer-bottom p { font-size: .78rem; margin: 0 0 6px; }
.disclaimer { color: var(--ink-soft); }

/* ============== RESPONSIVE ============== */
@media (max-width: 960px) {
  .hero { grid-template-columns: 1fr; }
  .hero-visual { order: -1; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .more-tools-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 720px) {
  .main-nav { position: fixed; top: 62px; left: 0; right: 0; bottom: 0; background: var(--bg);
    transform: translateX(100%); transition: transform .2s ease; overflow-y: auto; padding: 20px; z-index: 40; }
  .main-nav.open { transform: translateX(0); }
  .main-nav ul { flex-direction: column; }
  .dropdown-panel { position: static; opacity: 1; visibility: visible; transform: none; display: none;
    grid-template-columns: 1fr; box-shadow: none; border: none; min-width: 0; }
  .has-dropdown.open .dropdown-panel { display: grid; }
  .mobile-menu-toggle { display: flex; }
  .form-grid { grid-template-columns: 1fr; }
  .features-grid, .steps, .footer-inner, .more-tools-grid { grid-template-columns: 1fr; }
  .hero-stats { gap: 20px; }
  .cookie-banner { left: 10px; right: 10px; }
}

@media (max-width: 480px) {
  .header-inner, .section-inner, .hero, .tool-inner { padding-left: 16px; padding-right: 16px; }
  .btn { width: 100%; }
  .hero-cta-row .btn, .cta-buttons .btn { width: auto; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
}