/* asenar-learn — minimal base styles (placeholder; full design in next iteration) */
:root {
    --c-bg: #fafafa;
    --c-fg: #1a1a1a;
    --c-muted: #666;
    --c-primary: #C8102E;
    --c-primary-dark: #a20d25;
    --c-border: #e5e5e5;
    --c-ok: #1a7f3e;
    --c-err: #c8102e;
    --radius: 6px;
    --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }
body { margin: 0; font-family: var(--font); color: var(--c-fg); background: var(--c-bg); line-height: 1.55; }

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

/* Nav */
.site-nav { background: #fff; border-bottom: 1px solid var(--c-border); position: sticky; top: 0; z-index: 100; }
.nav-inner { max-width: 1200px; margin: 0 auto; padding: 12px 20px; display: flex; align-items: center; gap: 24px; }
.nav-logo { display: flex; align-items: center; gap: 8px; color: var(--c-fg); font-weight: 700; font-size: 1.1rem; }
.logo-mark { color: var(--c-primary); font-family: monospace; font-size: 1.3rem; letter-spacing: -0.05em; }
.nav-menu { list-style: none; margin: 0 0 0 auto; padding: 0; display: flex; gap: 20px; align-items: center; }
.nav-menu a { color: var(--c-fg); }
.nav-toggle { display: none; background: none; border: 0; cursor: pointer; flex-direction: column; gap: 4px; }
.nav-toggle span { width: 24px; height: 2px; background: var(--c-fg); }
.inline-form { display: inline; margin: 0; }
.btn-link { background: none; border: 0; color: var(--c-primary); cursor: pointer; padding: 0; font: inherit; }

@media (max-width: 768px) {
    .nav-toggle { display: flex; }
    .nav-menu { display: none; position: absolute; top: 100%; right: 0; background: #fff; flex-direction: column; padding: 16px; box-shadow: 0 4px 12px rgba(0,0,0,0.08); min-width: 220px; }
    .nav-menu.open { display: flex; }
}

/* Buttons */
.btn { display: inline-block; padding: 10px 20px; border-radius: var(--radius); border: 1px solid transparent; font: inherit; cursor: pointer; text-align: center; }
.btn-primary { background: var(--c-primary); color: #fff; }
.btn-primary:hover { background: var(--c-primary-dark); color: #fff; text-decoration: none; }
.btn-ghost { background: transparent; color: var(--c-fg); border-color: var(--c-border); }
.btn-ghost:hover { background: #f5f5f5; text-decoration: none; }
.btn-success { background: var(--c-ok); color: #fff; }
.btn-lg { padding: 14px 28px; font-size: 1.1rem; }
.btn-sm { padding: 6px 14px; font-size: 0.9rem; }
.btn-block { display: block; width: 100%; }

/* Layout */
main { min-height: calc(100vh - 200px); }
.section-inner { max-width: 1200px; margin: 0 auto; padding: 48px 20px; }
.page-narrow { max-width: 720px; margin: 0 auto; padding: 48px 20px; }

/* Hero */
.hero { background: linear-gradient(135deg, #fff 0%, #f5f5f5 100%); padding: 80px 20px; text-align: center; }
.hero-inner { max-width: 900px; margin: 0 auto; }
.hero-eyebrow { display: inline-block; padding: 4px 12px; background: var(--c-primary); color: #fff; border-radius: 999px; font-size: 0.85rem; margin-bottom: 20px; }
.hero h1 { font-size: 2.5rem; line-height: 1.2; margin: 0 0 20px; }
.hero h1 em { color: var(--c-primary); font-style: normal; display: block; font-size: 1.5rem; margin-top: 8px; font-weight: 500; }
.hero-lede { font-size: 1.15rem; color: var(--c-muted); margin: 0 auto 28px; max-width: 720px; }
.hero-cta { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.hero-note { color: var(--c-muted); margin-top: 16px; font-size: 0.9rem; }

/* Grids */
.section-title { font-size: 2rem; text-align: center; margin: 0 0 12px; }
.section-lede { text-align: center; color: var(--c-muted); max-width: 720px; margin: 0 auto 40px; }
.track-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px; }
.track-card { background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius); padding: 24px; }
.track-card h3 { margin: 0 0 10px; }
.badge-new { display: inline-block; background: var(--c-primary); color: #fff; font-size: 0.7rem; padding: 2px 8px; border-radius: 999px; margin-left: 6px; }
.value-grid { list-style: none; padding: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 20px; }
.value-grid li { background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius); padding: 20px; }
.value-grid h3 { margin: 0 0 8px; color: var(--c-primary); }

/* Pricing */
.plan-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 20px; }
.plan { background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius); padding: 28px 22px; position: relative; }
.plan-featured { border-color: var(--c-primary); border-width: 2px; transform: translateY(-4px); }
.plan-badge { position: absolute; top: -12px; left: 50%; transform: translateX(-50%); background: var(--c-primary); color: #fff; padding: 4px 12px; border-radius: 999px; font-size: 0.75rem; }
.plan h2 { margin: 0 0 8px; }
.plan-price { font-size: 2rem; font-weight: 700; margin: 0 0 20px; }
.plan-price span { font-size: 0.9rem; color: var(--c-muted); font-weight: 400; }
.plan-feats { list-style: none; padding: 0; margin: 0 0 24px; }
.plan-feats li { padding: 6px 0; border-bottom: 1px solid var(--c-border); }

/* Auth */
.auth-page { min-height: 60vh; display: flex; align-items: center; justify-content: center; padding: 40px 20px; }
.auth-card { background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius); padding: 40px; max-width: 420px; width: 100%; }
.auth-card h1 { margin: 0 0 8px; }
.auth-lede { color: var(--c-muted); margin: 0 0 20px; }
.auth-alt { text-align: center; margin-top: 20px; color: var(--c-muted); }
.auth-card input[type=text], .auth-card input[type=password], .auth-card input[type=email] { width: 100%; padding: 10px 12px; border: 1px solid var(--c-border); border-radius: var(--radius); font: inherit; }

/* Dashboard */
.dashboard h1 { margin: 0 0 4px; }
.dash-sub { color: var(--c-muted); margin: 0 0 32px; }
.dash-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 20px; }
.dash-card { background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius); padding: 24px; }

/* Chat */
.chat-room { max-width: 900px; margin: 0 auto; padding: 20px; }
.chat-header { display: flex; align-items: center; gap: 20px; border-bottom: 1px solid var(--c-border); padding-bottom: 12px; margin-bottom: 20px; }
.chat-log { min-height: 400px; max-height: 60vh; overflow-y: auto; padding: 12px; background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius); margin-bottom: 16px; }
.chat-msg { padding: 10px 14px; margin-bottom: 10px; border-radius: var(--radius); }
.chat-msg-user { background: #f0f0f0; }
.chat-msg-assistant { background: #fff; border: 1px solid var(--c-border); }
.chat-composer { display: flex; gap: 8px; }
.chat-composer textarea { flex: 1; padding: 10px; border: 1px solid var(--c-border); border-radius: var(--radius); font: inherit; resize: vertical; }

/* Lesson */
.lesson-page { display: grid; grid-template-columns: 1fr 320px; gap: 40px; max-width: 1200px; margin: 0 auto; padding: 40px 20px; }
@media (max-width: 900px) { .lesson-page { grid-template-columns: 1fr; } }
.video-embed { position: relative; padding-bottom: 56.25%; height: 0; margin: 20px 0; }
.video-embed iframe { position: absolute; top: 0; left: 0; width: 100%; height: 100%; border-radius: var(--radius); }
.quiz-question { background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius); padding: 20px; margin-bottom: 16px; }
.quiz-question label { display: block; padding: 6px 0; }
.feedback { margin-top: 12px; padding: 12px; border-radius: var(--radius); }
.feedback-ok { background: #e8f5ec; color: var(--c-ok); }
.feedback-err { background: #fce8ec; color: var(--c-err); }
.lesson-aside { background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius); padding: 20px; height: fit-content; }

/* Breadcrumb */
.breadcrumb { color: var(--c-muted); font-size: 0.9rem; margin-bottom: 16px; }
.breadcrumb a { color: var(--c-muted); }

/* Lists */
.topic-list, .lesson-list { line-height: 1.8; }
.duration { color: var(--c-muted); font-size: 0.85rem; }

/* Messages */
.messages { max-width: 1200px; margin: 20px auto 0; padding: 0 20px; }
.msg { padding: 12px 16px; border-radius: var(--radius); margin-bottom: 8px; }
.msg-success { background: #e8f5ec; color: var(--c-ok); }
.msg-error { background: #fce8ec; color: var(--c-err); }
.msg-info { background: #e8f0fe; color: #1a4fb8; }

/* Footer */
.site-footer { background: #fff; border-top: 1px solid var(--c-border); margin-top: 80px; padding: 48px 20px 24px; }
.footer-inner { max-width: 1200px; margin: 0 auto; display: grid; grid-template-columns: 1fr 2fr; gap: 40px; }
.footer-brand { color: var(--c-muted); }
.footer-brand strong { color: var(--c-fg); display: inline-block; margin-left: 4px; }
.footer-tagline { margin-top: 12px; }
.footer-links { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.footer-col h3 { margin: 0 0 12px; font-size: 0.95rem; text-transform: uppercase; letter-spacing: 0.05em; }
.footer-col ul { list-style: none; padding: 0; margin: 0; line-height: 2; }
.footer-bottom { max-width: 1200px; margin: 32px auto 0; padding-top: 20px; border-top: 1px solid var(--c-border); display: flex; justify-content: space-between; color: var(--c-muted); flex-wrap: wrap; gap: 12px; }
.disclaimer { color: var(--c-muted); font-size: 0.85rem; font-style: italic; }

@media (max-width: 768px) {
    .footer-inner { grid-template-columns: 1fr; }
    .footer-links { grid-template-columns: repeat(2, 1fr); }
    .hero h1 { font-size: 1.75rem; }
}

/* Profile */
.profile-list { display: grid; grid-template-columns: auto 1fr; gap: 8px 24px; margin: 24px 0; }
.profile-list dt { font-weight: 600; color: var(--c-muted); }

/* Error */
.error-page { text-align: center; }
.error-page h1 { font-size: 5rem; color: var(--c-primary); margin: 40px 0 20px; }

/* Checkout */
.checkout { text-align: center; }
.price-big { font-size: 3rem; font-weight: 700; margin: 20px 0; }
.price-big span { font-size: 1rem; color: var(--c-muted); font-weight: 400; }
.payment-methods { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin: 24px 0; }