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

:root {
    --primary: #0f172a;
    --primary-light: #1e293b;
    --accent: #0d7a6e;
    --accent-light: #14a892;
    --accent-glow: rgba(13, 122, 110, 0.15);
    --text: #1e293b;
    --text-secondary: #64748b;
    --bg: #f8fafc;
    --bg-card: #ffffff;
    --border: #e2e8f0;
    --danger: #dc2626;
    --success: #16a34a;
    --warning: #d97706;
    --radius: 12px;
    --radius-sm: 8px;
    --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
    --shadow-lg: 0 10px 30px rgba(0,0,0,0.08);
    --font-sans: 'Inter', -apple-system, sans-serif;
    --font-body: 'DM Sans', -apple-system, sans-serif;
}

html { scroll-behavior: smooth; font-size: 16px; }
main { display: block; }
.main-dashboard { display: flex; height: 100vh; overflow: hidden; }
.main-dashboard + .footer { display: none; }
body {
    font-family: var(--font-body);
    color: var(--text);
    background: var(--bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* Navbar */
.navbar {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    height: 64px;
}
.navbar .container { display: flex; align-items: center; justify-content: space-between; height: 100%; }
.logo { display: flex; align-items: center; gap: 8px; text-decoration: none; }
.logo-text {
    font-family: var(--font-sans);
    font-weight: 800;
    font-size: 1.35rem;
    color: var(--primary);
    letter-spacing: -0.5px;
}
.logo-text::after { content: "®"; font-size: 0.5rem; vertical-align: super; color: var(--accent); }
.nav-links { display: flex; align-items: center; gap: 8px; list-style: none; }
.nav-links a { text-decoration: none; color: var(--text); font-size: 0.875rem; font-weight: 500; padding: 8px 14px; border-radius: var(--radius-sm); transition: all 0.2s; }
.nav-links a:hover { background: var(--accent-glow); color: var(--accent); }
.menu-toggle { display: none; flex-direction: column; gap: 4px; background: none; border: none; cursor: pointer; padding: 4px; }
.menu-toggle span { display: block; width: 22px; height: 2px; background: var(--text); border-radius: 2px; }

/* Buttons */
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 10px 24px; border-radius: var(--radius-sm); font-family: var(--font-sans); font-weight: 600; font-size: 0.875rem; text-decoration: none; border: none; cursor: pointer; transition: all 0.2s; }
.btn-sm { padding: 6px 16px; font-size: 0.8125rem; }
.btn-lg { padding: 14px 32px; font-size: 1rem; }
.btn-primary { background: var(--accent); color: white; }
.btn-primary:hover { background: var(--accent-light); transform: translateY(-1px); box-shadow: var(--shadow-lg); }
.btn-secondary { background: var(--primary); color: white; }
.btn-secondary:hover { background: var(--primary-light); }
.btn-outline { background: transparent; color: var(--text); border: 1.5px solid var(--border); }
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }
.btn-danger { background: var(--danger); color: white; }
.btn-ghost { background: transparent; color: var(--text-secondary); padding: 8px; }
.btn-ghost:hover { color: var(--text); background: var(--border); }

/* Hero section */
.hero {
    padding: 80px 0 48px;
    background: linear-gradient(135deg, var(--primary) 0%, #1a2744 50%, #0d2137 100%);
    color: white;
    position: relative;
    overflow: hidden;
}
.hero::before {
    content: '';
    position: absolute; top: -50%; right: -20%;
    width: 500px; height: 500px;
    background: radial-gradient(circle, rgba(13,122,110,0.12) 0%, transparent 70%);
    border-radius: 50%;
}
.hero::after {
    content: '';
    position: absolute; bottom: -30%; left: -10%;
    width: 300px; height: 300px;
    background: radial-gradient(circle, rgba(13,122,110,0.08) 0%, transparent 70%);
    border-radius: 50%;
}
.hero .container { position: relative; z-index: 1; }
.hero-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
.hero h1 {
    font-family: var(--font-sans);
    font-size: 2.5rem;
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -1px;
    margin-bottom: 16px;
}
.hero h1 span { color: var(--accent-light); }
.hero p { font-size: 1rem; color: rgba(255,255,255,0.7); margin-bottom: 24px; max-width: 500px; line-height: 1.6; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-actions .btn-primary { background: var(--accent-light); }
.hero-actions .btn-primary:hover { background: #1bc0a6; }
.hero-actions .btn-outline { border-color: rgba(255,255,255,0.2); color: white; }
.hero-actions .btn-outline:hover { border-color: var(--accent-light); background: var(--accent-glow); }
.hero-stats { display: flex; gap: 32px; margin-top: 32px; }
.hero-stat h3 { font-family: var(--font-sans); font-size: 1.75rem; font-weight: 700; }
.hero-stat h3 span { color: var(--accent-light); }
.hero-stat p { font-size: 0.75rem; color: rgba(255,255,255,0.5); margin: 0; }
.hero-visual { display: flex; justify-content: center; align-items: center; }
.hero-card {
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius);
    padding: 20px;
    width: 100%;
    backdrop-filter: blur(8px);
}
.hero-card h4 { font-family: var(--font-sans); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 1px; color: rgba(255,255,255,0.4); margin-bottom: 12px; }
.curve-chart { margin: 12px 0; }
.curve-item { display: flex; align-items: center; gap: 10px; padding: 6px 0; border-bottom: 1px solid rgba(255,255,255,0.06); }
.curve-label { font-size: 0.75rem; color: rgba(255,255,255,0.6); min-width: 80px; }
.curve-bar { flex: 1; height: 6px; background: rgba(255,255,255,0.08); border-radius: 4px; overflow: hidden; }
.curve-fill { height: 100%; border-radius: 4px; transition: width 1s; }
.curve-fill.red { background: var(--danger); width: 25%; }
.curve-fill.green { background: var(--success); width: 81%; }
.curve-value { font-size: 0.75rem; font-weight: 600; min-width: 36px; text-align: right; }

/* Sections */
.section { padding: 48px 0; }
.section[id] { scroll-margin-top: 48px; }
.section-dark { background: var(--primary); color: white; }
.section-header { text-align: center; margin-bottom: 32px; }
.section-header h2 {
    font-family: var(--font-sans);
    font-size: 1.75rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    margin-bottom: 8px;
    color: var(--primary);
}
.section-dark .section-header h2 { color: white; }
.section-header p { color: var(--text-secondary); font-size: 1rem; max-width: 600px; margin: 0 auto; }
.section-dark .section-header p { color: rgba(255,255,255,0.6); }

/* Cards grid */
.cards-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 16px; }
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    transition: all 0.25s;
}
.card:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.card-perfil-unico { padding: 24px; }
.card-perfil-unico h1 { font-size: 1.35rem; font-weight: 800; letter-spacing: -0.5px; }
.card-icon { width: 40px; height: 40px; border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; font-size: 1.25rem; margin-bottom: 12px; }
.card-icon.green { background: rgba(13,122,110,0.1); color: var(--accent); }
.card-icon.blue { background: rgba(15,23,42,0.08); color: var(--primary); }
.card-icon.gold { background: rgba(217,119,6,0.1); color: var(--warning); }
.card h3 { font-family: var(--font-sans); font-size: 1rem; font-weight: 700; margin-bottom: 4px; }
.card p { color: var(--text-secondary); font-size: 0.85rem; line-height: 1.5; }

/* Method comparison table */
.comparison { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
.comparison-methods { display: flex; flex-direction: column; gap: 8px; }
.method-item { display: flex; align-items: center; gap: 12px; padding: 12px 16px; background: var(--bg-card); border-radius: var(--radius-sm); border: 1px solid var(--border); }
.method-item .icon { font-size: 1.25rem; opacity: 0.5; }
.method-item .label { flex: 1; font-weight: 500; }
.method-item .pct { font-weight: 700; font-family: var(--font-sans); }
.method-item .pct.high { color: var(--accent); }
.method-item .pct.low { color: var(--text-secondary); }
.method-bar { width: 80px; height: 6px; background: var(--border); border-radius: 3px; overflow: hidden; }
.method-fill { height: 100%; border-radius: 3px; }
.method-fill.high { background: var(--accent); width: 82%; }
.method-fill.med { background: var(--warning); width: 78%; }
.method-fill.low { background: var(--text-secondary); width: 40%; }
.method-fill.vlow { background: var(--danger); width: 25%; }

.curve-journey { position: relative; padding: 40px; background: var(--bg-card); border-radius: var(--radius); border: 1px solid var(--border); }
.curve-label-row, .curve-row { display: grid; grid-template-columns: 80px 1fr; align-items: center; gap: 16px; padding: 8px 0; }
.curve-label-row span:first-child, .curve-row span:first-child { font-size: 0.8125rem; color: var(--text-secondary); }
.curve-track { position: relative; height: 40px; }
.curve-line { position: absolute; top: 50%; left: 0; right: 0; height: 3px; background: var(--border); transform: translateY(-50%); border-radius: 2px; }
.curve-dots { position: absolute; top: 50%; left: 0; right: 0; transform: translateY(-50%); display: flex; justify-content: space-between; }
.curve-dot { width: 14px; height: 14px; border-radius: 50%; background: var(--border); position: relative; }
.curve-dot.active { background: var(--accent); box-shadow: 0 0 0 4px var(--accent-glow); }
.curve-dot.dim { opacity: 0.3; }
.curve-path { position: absolute; top: 50%; left: 0; height: 3px; background: linear-gradient(90deg, var(--accent) 0%, var(--accent-light) 100%); transform: translateY(-50%); border-radius: 2px; }

/* Depoimentos */
.depoimentos-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 16px; }
.depoimento-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    position: relative;
}
.depoimento-card::before { content: '"'; position: absolute; top: 8px; left: 16px; font-size: 2.5rem; color: var(--accent); opacity: 0.15; font-family: serif; line-height: 1; }
.depoimento-text { font-size: 0.85rem; color: var(--text); line-height: 1.6; margin-bottom: 12px; }
.depoimento-author { display: flex; align-items: center; gap: 10px; }
.depoimento-avatar { width: 36px; height: 36px; border-radius: 50%; background: var(--accent-glow); display: flex; align-items: center; justify-content: center; font-weight: 700; color: var(--accent); font-size: 0.8rem; }
.depoimento-info h4 { font-size: 0.85rem; font-weight: 600; }
.depoimento-info p { font-size: 0.75rem; color: var(--text-secondary); }

/* Planos */
.planos-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 16px; align-items: start; }
.plano-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px 24px;
    text-align: center;
    transition: all 0.2s;
    position: relative;
}
.plano-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.plano-card.destaque { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent-glow); }
.plano-card.destaque::before { content: 'Mais popular'; position: absolute; top: -12px; left: 50%; transform: translateX(-50%); background: var(--accent); color: white; padding: 4px 16px; border-radius: 20px; font-size: 0.75rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; }
.plano-nome { font-family: var(--font-sans); font-size: 1.1rem; font-weight: 700; margin-bottom: 2px; }
.plano-desc { font-size: 0.8rem; color: var(--text-secondary); margin-bottom: 16px; }
.plano-preco { margin-bottom: 16px; }
.plano-preco .valor { font-family: var(--font-sans); font-size: 2rem; font-weight: 800; color: var(--primary); }
.plano-preco .valor small { font-size: 0.875rem; font-weight: 600; }
.plano-preco .periodo { font-size: 0.8rem; color: var(--text-secondary); }
.plano-recursos { list-style: none; text-align: left; margin-bottom: 20px; }
.plano-recursos li { padding: 6px 0; font-size: 0.8125rem; border-bottom: 1px solid var(--border); }
.plano-recursos li::before { content: '✓'; color: var(--accent); font-weight: 700; margin-right: 10px; }

/* FAQ */
.faq-list { max-width: 700px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--border); }
.faq-question { width: 100%; text-align: left; padding: 20px 0; background: none; border: none; font-family: var(--font-sans); font-size: 1rem; font-weight: 600; cursor: pointer; display: flex; justify-content: space-between; align-items: center; color: var(--text); }
.faq-question::after { content: '+'; font-size: 1.25rem; color: var(--accent); transition: transform 0.2s; }
.faq-item.open .faq-question::after { transform: rotate(45deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; }
.faq-answer p { padding: 0 0 20px; color: var(--text-secondary); font-size: 0.9rem; line-height: 1.7; }
.faq-item.open .faq-answer { max-height: 300px; }

/* Footer */
.footer { background: var(--primary); color: rgba(255,255,255,0.7); padding: 40px 0 16px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 32px; margin-bottom: 24px; }
.footer-brand .logo-text { color: white; font-size: 1.25rem; }
.footer-brand p { margin-top: 12px; font-size: 0.85rem; line-height: 1.6; color: rgba(255,255,255,0.5); }
.footer-col h4 { color: white; font-family: var(--font-sans); font-size: 0.875rem; font-weight: 700; margin-bottom: 16px; text-transform: uppercase; letter-spacing: 0.5px; }
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 8px; }
.footer-col a { color: rgba(255,255,255,0.5); text-decoration: none; font-size: 0.875rem; transition: color 0.2s; }
.footer-col a:hover { color: var(--accent-light); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding-top: 20px; text-align: center; font-size: 0.8rem; color: rgba(255,255,255,0.3); }

/* Auth pages */
.auth-page { flex: 1; display: flex; align-items: center; justify-content: center; padding: 16px; background: var(--bg); }
.auth-card { width: 100%; max-width: 440px; background: var(--bg-card); border-radius: var(--radius); padding: 40px; border: 1px solid var(--border); box-shadow: var(--shadow-lg); }
.auth-card.auth-card-wide { max-width: 960px; padding: 24px 32px; }
.auth-card.auth-card-compact .logo-text { margin-bottom: 8px; font-size: 1.35rem; }
.auth-card.auth-card-compact h2 { font-size: 1.15rem; margin-bottom: 2px; }
.auth-card.auth-card-compact .subtitle { margin-bottom: 10px; font-size: 0.8rem; }
.auth-card.auth-card-compact .form-group { margin-bottom: 6px; }
.auth-card.auth-card-compact .form-group label { margin-bottom: 2px; font-size: 0.75rem; }
.auth-card.auth-card-compact .form-group input,
.auth-card.auth-card-compact .form-group select { padding: 6px 10px; font-size: 0.8rem; }
.auth-card.auth-card-compact .auth-section-divider { margin: 6px 0 6px; font-size: 0.7rem; }
.auth-card.auth-card-compact .auth-section-title { margin-bottom: 6px; font-size: 0.75rem; }
.auth-card.auth-card-compact .auth-section-title .icon { font-size: 0.9rem; }
.auth-card.auth-card-compact .plano-option { padding: 6px 10px; gap: 8px; }
.auth-card.auth-card-compact .plano-option:has(input:checked)::before { width: 14px; height: 14px; line-height: 14px; font-size: 0.55rem; top: 4px; right: 4px; }
.auth-card.auth-card-compact .plano-option-content strong { font-size: 0.8rem; }
.auth-card.auth-card-compact .plano-option-content .plano-recursos { margin-top: 0; }
.auth-card.auth-card-compact .plano-option-content .plano-recursos li { padding: 0; font-size: 0.65rem; }
.auth-card.auth-card-compact .plano-meta { font-size: 0.65rem; }
.auth-card.auth-card-compact .plano-option-destaque::after { font-size: 0.55rem; padding: 1px 10px; top: -8px; }
.auth-card.auth-card-compact .alert { margin-bottom: 8px; padding: 6px 10px; font-size: 0.75rem; }
.auth-card.auth-card-compact .form-link { margin-top: 8px; font-size: 0.75rem; }
.auth-card.auth-card-compact .btn-lg { padding: 8px 20px; font-size: 0.8rem; }
.auth-card.auth-card-compact .password-toggle { font-size: 0.85rem; padding: 2px; }
.auth-card.auth-card-compact .password-wrapper input { padding-right: 30px; }
.auth-card .logo-text { display: block; text-align: center; font-size: 1.5rem; margin-bottom: 32px; }
.auth-card h2 { font-family: var(--font-sans); font-size: 1.5rem; font-weight: 700; text-align: center; margin-bottom: 8px; }
.auth-card .subtitle { text-align: center; color: var(--text-secondary); font-size: 0.9rem; margin-bottom: 32px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 0.875rem; font-weight: 600; margin-bottom: 6px; color: var(--text); }
.form-group input, .form-group select, .form-group textarea {
    width: 100%; padding: 10px 14px; border: 1.5px solid var(--border); border-radius: var(--radius-sm);
    font-family: var(--font-body); font-size: 0.9rem; transition: border-color 0.2s; background: var(--bg);
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-glow); }
.form-group .btn { width: 100%; justify-content: center; }
.form-link { text-align: center; margin-top: 20px; font-size: 0.875rem; color: var(--text-secondary); }
.form-link a { color: var(--accent); text-decoration: none; font-weight: 600; }
.form-link a:hover { text-decoration: underline; }
.alert { padding: 12px 16px; border-radius: var(--radius-sm); margin-bottom: 20px; font-size: 0.875rem; }
.alert-error { background: rgba(220,38,38,0.08); color: var(--danger); border: 1px solid rgba(220,38,38,0.2); }
.alert-success { background: rgba(22,163,74,0.08); color: var(--success); border: 1px solid rgba(22,163,74,0.2); }

/* Auth sections */
.auth-section-divider {
    display: flex; align-items: center; gap: 12px; margin: 28px 0 24px;
    font-size: 0.8rem; font-weight: 600; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.5px;
}
.auth-section-divider::before,
.auth-section-divider::after { content: ''; flex: 1; height: 1px; background: var(--border); }
.auth-section-title {
    font-family: var(--font-sans); font-size: 0.95rem; font-weight: 700; color: var(--primary); margin-bottom: 16px;
    display: flex; align-items: center; gap: 8px;
}
.auth-section-title .icon { font-size: 1.1rem; }

/* Form rows */
.auth-card-wide .form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
@media (max-width: 768px) { .auth-card-wide .form-row { grid-template-columns: 1fr; gap: 0; } }

/* Plan selection on register */
.plano-selecao { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
@media (max-width: 768px) { .plano-selecao { grid-template-columns: 1fr; } }
.plano-option {
    display: flex; align-items: flex-start; gap: 14px;
    padding: 16px 18px;
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s;
    position: relative;
}
.plano-option:hover { border-color: var(--accent); background: var(--accent-glow); }
.plano-option:has(input:checked) {
    border-color: var(--accent);
    background: rgba(13,122,110,0.06);
    box-shadow: 0 0 0 3px var(--accent-glow);
}
.plano-option:has(input:checked)::before {
    content: '✓';
    position: absolute; top: 8px; right: 8px;
    width: 20px; height: 20px;
    background: var(--accent);
    color: white;
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 0.7rem; font-weight: 700; line-height: 20px; text-align: center;
}
.plano-option input[type="radio"] {
    position: absolute; opacity: 0; width: 0; height: 0;
}
.plano-option-content { flex: 1; min-width: 0; }
.plano-option-content strong { display: block; font-size: 0.95rem; font-weight: 700; color: var(--primary); }
.plano-option-content .plano-meta { display: block; color: var(--text-secondary); font-size: 0.8rem; margin-top: 2px; }
.plano-option-content .plano-recursos {
    margin: 6px 0 0; padding: 0; list-style: none;
    font-size: 0.78rem; color: var(--text-secondary);
}
.plano-option-content .plano-recursos li { padding: 2px 0; }
.plano-option-content .plano-recursos li::before { content: '✓'; color: var(--accent); font-weight: 700; margin-right: 6px; }
.plano-option-content .plano-recursos .mais-recursos { color: var(--accent); font-weight: 600; }
.plano-option-destaque {
    border-color: var(--accent);
    background: rgba(13,122,110,0.04);
}
.plano-option-destaque::after {
    content: 'Mais popular'; position: absolute; top: -10px; left: 12px;
    background: var(--accent); color: white; padding: 2px 12px;
    border-radius: 20px; font-size: 0.65rem; font-weight: 700;
    text-transform: uppercase; letter-spacing: 0.5px;
}

/* Password wrapper with toggle */
.password-wrapper {
    position: relative;
}
.password-wrapper input { padding-right: 44px; }
.password-toggle {
    position: absolute; right: 10px; top: 50%; transform: translateY(-50%);
    background: none; border: none; cursor: pointer;
    color: var(--text-secondary); font-size: 1.1rem; padding: 6px;
    line-height: 1; display: flex; align-items: center; justify-content: center;
    transition: color 0.2s;
}
.password-toggle:hover { color: var(--accent); }

.auth-page-admin { background: linear-gradient(135deg, #0c0f1a 0%, #1a1a2e 100%); }
.auth-page-admin .auth-card { border-color: var(--accent); }

.perfil-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
    max-width: 600px;
}
.perfil-card h2 {
    font-family: var(--font-sans);
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 16px;
}
.perfil-card hr { margin: 24px 0; }

/* Dashboard layout */
.dashboard-layout { display: block; }
.sidebar {
    width: 240px; background: var(--primary); color: white; position: fixed; top: 0; left: 0; bottom: 0;
    padding: 12px 0; overflow-y: auto; z-index: 100;
    transition: left 0.3s ease;
}
.sidebar-close { display: none; }
.sidebar-header { padding: 0 20px 12px; border-bottom: 1px solid rgba(255,255,255,0.08); }
.sidebar-header .logo-text { color: white; }
.sidebar-nav a {
    display: flex; align-items: center; gap: 10px; padding: 8px 20px; color: rgba(255,255,255,0.6);
    text-decoration: none; font-size: 0.875rem; transition: all 0.2s; position: relative;
}
.sidebar-nav a:hover, .sidebar-nav a.active { background: rgba(255,255,255,0.06); color: white; }
.sidebar-nav a.active::before { content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 3px; background: var(--accent-light); border-radius: 0 2px 2px 0; }
.sidebar-nav hr { border: none; border-top: 1px solid rgba(255,255,255,0.08); margin: 12px 20px; }
.sidebar-user { padding: 4px 20px; font-size: 0.8rem; }
.sidebar-user span { display: block; color: white; font-weight: 600; }
.sidebar-user small { color: rgba(255,255,255,0.4); text-transform: uppercase; font-size: 0.7rem; letter-spacing: 0.5px; }
.logout-link { margin-top: 8px; color: rgba(255,255,255,0.4) !important; }
.badge {
    display: inline-flex; align-items: center; justify-content: center;
    background: var(--danger); color: white; font-size: 0.7rem; font-weight: 700;
    min-width: 20px; height: 20px; border-radius: 10px; padding: 0 6px; margin-left: auto;
}
.dashboard-content { margin-left: 240px; flex: 1; padding: 16px 24px; overflow-y: auto; }
.dashboard-content h1 { font-family: var(--font-sans); font-size: 1.35rem; font-weight: 800; margin-bottom: 2px; letter-spacing: -0.5px; }
.dashboard-content .subtitle { color: var(--text-secondary); margin-bottom: 12px; font-size: 0.875rem; }
.sidebar-toggle {
    display: none;
    align-items: center; justify-content: center;
    width: 36px; height: 36px; border-radius: var(--radius-sm);
    background: var(--bg-card); border: 1px solid var(--border);
    cursor: pointer; font-size: 1.2rem; color: var(--text);
    flex-shrink: 0; transition: all 0.2s;
}
.sidebar-toggle:hover { border-color: var(--accent); color: var(--accent); }
.dashboard-stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 12px; margin-bottom: 12px; }
.stat-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 16px; }
.stat-card .icon { font-size: 1.2rem; margin-bottom: 4px; }
.stat-card h3 { font-family: var(--font-sans); font-size: 1.35rem; font-weight: 800; color: var(--primary); }
.stat-card p { font-size: 0.8rem; color: var(--text-secondary); }

/* Flashcards */
.flashcard-review {
    max-width: 640px; margin: 0 auto; perspective: 1000px;
}
.flashcard {
    position: relative; width: 100%; min-height: 380px;
    cursor: pointer; transform-style: preserve-3d; transition: transform 0.5s;
}
.flashcard.flipped { transform: rotateY(180deg); }
.flashcard-face {
    position: absolute; top: 0; left: 0; width: 100%; min-height: 380px;
    backface-visibility: hidden; border-radius: var(--radius);
    background: var(--bg-card); border: 1px solid var(--border);
    padding: 40px 32px; display: flex; flex-direction: column;
    box-shadow: var(--shadow);
}
.flashcard-back { transform: rotateY(180deg); }
.flashcard-face .card-label {
    font-size: 0.75rem; text-transform: uppercase; letter-spacing: 1px;
    color: var(--text-secondary); margin-bottom: 16px;
}
.flashcard-face .card-content { flex: 1; display: flex; align-items: center; justify-content: center; text-align: center; font-size: 1.1rem; line-height: 1.7; }
.flashcard-face .card-footer { display: flex; justify-content: space-between; align-items: center; margin-top: 16px; font-size: 0.8rem; color: var(--text-secondary); }
.flashcard-actions { display: flex; gap: 8px; margin-top: 24px; }
.flashcard-actions .btn { flex: 1; justify-content: center; padding: 14px; }
.flashcard-actions .btn-hard { background: rgba(220,38,38,0.1); color: var(--danger); }
.flashcard-actions .btn-good { background: rgba(217,119,6,0.1); color: var(--warning); }
.flashcard-actions .btn-easy { background: rgba(13,122,110,0.1); color: var(--accent); }
.flashcard-actions .btn-perfect { background: rgba(22,163,74,0.1); color: var(--success); }
.flashcard-progress-bar { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.flashcard-timer { display: flex; justify-content: center; gap: 16px; margin-top: 12px; font-size: 0.85rem; font-weight: 600; font-family: var(--font-sans); }
.timer-card { color: var(--text-secondary); }
.timer-total { color: var(--accent); }
.flashcard-progress-track { flex: 1; height: 8px; background: var(--border); border-radius: 4px; overflow: hidden; }
.flashcard-progress-fill { height: 100%; background: var(--accent); border-radius: 4px; transition: width 0.4s ease; }
.flashcard-progress-text { font-size: 0.85rem; color: var(--text-secondary); white-space: nowrap; }
.flashcard-img { display: block; max-width: 100%; max-height: 200px; margin: 0 auto 12px; border-radius: var(--radius-sm); border: 1px solid var(--border); object-fit: contain; }
.flashcard-progress { text-align: center; color: var(--text-secondary); font-size: 0.85rem; margin-bottom: 16px; }

/* Questões */
.question-container { max-width: 720px; margin: 0 auto; }
.question-header { margin-bottom: 16px; }
.question-header .meta { font-size: 0.8rem; color: var(--text-secondary); display: flex; gap: 12px; flex-wrap: wrap; }
.question-card {
    background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; margin-bottom: 16px;
}
.question-enunciado { font-size: 0.925rem; line-height: 1.7; margin-bottom: 16px; }
.question-alternativas { display: flex; flex-direction: column; gap: 12px; }
.alternativa {
    display: flex; align-items: flex-start; gap: 12px; padding: 14px 16px;
    border: 1.5px solid var(--border); border-radius: var(--radius-sm);
    cursor: pointer; transition: all 0.2s; font-size: 0.9rem; line-height: 1.5;
}
.alternativa:hover { border-color: var(--accent); background: var(--accent-glow); }
.alternativa.selected { border-color: var(--accent); background: rgba(13,122,110,0.08); }
.alternativa.correct { border-color: var(--success); background: rgba(22,163,74,0.08); }
.alternativa.wrong { border-color: var(--danger); background: rgba(220,38,38,0.08); }
.alternativa .letter { font-weight: 700; color: var(--text-secondary); min-width: 24px; }
.question-feedback { margin-top: 20px; padding: 20px; border-radius: var(--radius-sm); background: var(--bg); border: 1px solid var(--border); }
.question-feedback h4 { font-family: var(--font-sans); margin-bottom: 8px; }
.question-feedback p { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.7; }

/* Grid de cards */
.grid-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 12px; }
.deck-card {
    background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 16px; transition: all 0.2s; text-decoration: none; color: inherit; display: block;
}
.deck-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.deck-card h3 { font-family: var(--font-sans); font-size: 0.95rem; font-weight: 700; margin-bottom: 2px; }
.deck-card p { font-size: 0.8rem; color: var(--text-secondary); margin-bottom: 8px; }
.deck-card .meta { font-size: 0.75rem; color: var(--text-secondary); display: flex; gap: 12px; }

/* ── Grid utilities ── */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; }
.grid-2-1fr-auto { display: grid; grid-template-columns: auto 1fr auto auto; gap: 16px; align-items: center; }
.grid-2-1fr-1fr { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.grid-2-1fr-1fr-8 { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.grid-2fr-1fr { display: grid; grid-template-columns: 2fr 1fr; gap: 12px; }
.grid-auto { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px; }
.grid-auto-sm { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 12px; }

@media (max-width: 768px) {
    .grid-2 { grid-template-columns: 1fr; }
    .grid-3 { grid-template-columns: 1fr; }
    .grid-2-1fr-auto { grid-template-columns: 1fr 1fr; }
    .grid-2-1fr-1fr { grid-template-columns: 1fr; }
    .grid-2-1fr-1fr-8 { grid-template-columns: 1fr; }
    .grid-2fr-1fr { grid-template-columns: 1fr; }
    .grid-auto { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
    .grid-2-1fr-auto { grid-template-columns: 1fr; gap: 8px; }
    .grid-2-1fr-auto > div { border-left: none !important; padding: 4px 0 !important; text-align: left !important; }
}

/* ==============================
   RESPONSIVE — Mobile First
   ============================== */

/* ── Telas grandes (≥1280px) ── */
@media (min-width: 1280px) {
    .container { max-width: 1280px; }
    .hero h1 { font-size: 3rem; }
    .section-header h2 { font-size: 2rem; }
}

/* ── Desktop / Tablet grande (≥1024px) ── */
@media (min-width: 1024px) {
    .menu-toggle { display: none; }
    .nav-links { display: flex !important; }
    .sidebar { width: 240px; }
    .dashboard-content { margin-left: 240px; }

    /* sidebar overlay nunca aparece em desktop */
    .sidebar-overlay { display: none !important; }
    .sidebar-close { display: none !important; }
    .sidebar-toggle { display: none !important; }
}

/* ── Tablet paisagem / desktop pequeno (768–1279px) ── */
@media (max-width: 1279px) {
    .dashboard-stats { grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); }
}

/* ── Tablet retrato / mobile grande (≤768px) ── */
@media (max-width: 768px) {
    /* ── Navbar ── */
    .menu-toggle { display: flex; }
    .nav-links {
        display: none;
        position: absolute; top: 64px; left: 0; right: 0;
        background: white; flex-direction: column; padding: 16px;
        border-bottom: 1px solid var(--border); box-shadow: var(--shadow);
    }
    .nav-links.open { display: flex; }
    .nav-links a { padding: 12px 14px; font-size: 0.95rem; }

    /* ── Landing Hero ── */
    .hero { padding: 64px 0 40px; }
    .hero-grid { grid-template-columns: 1fr; gap: 24px; text-align: center; }
    .hero h1 { font-size: 1.5rem; }
    .hero p { max-width: 100%; margin-left: auto; margin-right: auto; }
    .hero-actions { justify-content: center; }
    .hero-stats { gap: 16px; justify-content: center; }
    .hero-stat h3 { font-size: 1.35rem; }
    .hero-visual { display: none; }

    /* ── Sections ── */
    .section { padding: 32px 0; }
    .section-header h2 { font-size: 1.5rem; }
    .section-header { margin-bottom: 24px; }

    /* ── Comparison ── */
    .comparison { grid-template-columns: 1fr; gap: 24px; }

    /* ── Dashboard Layout ── */
    .sidebar {
        position: fixed; top: 0; left: -280px; width: 260px;
        bottom: 0; z-index: 1100;
        transition: left 0.3s ease;
        padding-top: 12px;
    }
    .sidebar.open { left: 0; }
    .dashboard-content { margin-left: 0; padding: 16px; }
    .dashboard-layout { height: auto; }

    /* Sidebar overlay escuro */
    .sidebar-overlay {
        display: none; position: fixed; top: 0; left: 0; right: 0; bottom: 0;
        background: rgba(0,0,0,0.5); z-index: 1099;
    }
    .sidebar-overlay.open { display: block; }

    /* Botão fechar sidebar */
    .sidebar-close {
        display: none; position: absolute; top: 12px; right: 12px;
        background: none; border: none; color: rgba(255,255,255,0.6);
        font-size: 1.5rem; cursor: pointer; z-index: 1101;
    }
    .sidebar.open .sidebar-close { display: block; }

    /* Botão hamburger no dashboard */
    .sidebar-toggle { display: inline-flex; margin-bottom: 8px; }

    /* ── Grids ── */
    .dashboard-stats { grid-template-columns: repeat(2, 1fr); }
    .planos-grid { grid-template-columns: 1fr; }
    .depoimentos-grid { grid-template-columns: 1fr; }
    .cards-grid { grid-template-columns: 1fr; }
    .grid-cards { grid-template-columns: 1fr; }

    /* ── Footer ── */
    .footer-grid { grid-template-columns: 1fr; gap: 16px; }
    .footer { padding: 32px 0 16px; }
    .footer-brand p { max-width: 100%; }

    /* ── Auth ── */
    .auth-card { padding: 24px; }
    .auth-page { padding: 24px 16px; }

    /* ── Buttons ── */
    .btn-lg { padding: 12px 24px; font-size: 0.9rem; }

    /* ── FAQ ── */
    .faq-question { font-size: 0.9rem; padding: 16px 0; }

    /* ── Flashcards ── */
    .flashcard-face { padding: 24px 16px; }
    .flashcard-face .card-content { font-size: 1rem; }
    .flashcard { min-height: 300px; }
    .flashcard-face { min-height: 300px; }

    /* ── Questões ── */
    .question-card { padding: 16px; }
    .alternativa { padding: 12px; font-size: 0.85rem; }
    .question-enunciado { font-size: 0.875rem; }

    /* ── Perfil ── */
    .perfil-card { padding: 20px; }

    /* ── Admin modals ── */
    .modal-content { padding: 24px; margin: 16px; width: calc(100% - 32px); max-height: 90vh; overflow-y: auto; }

    /* ── Tabelas / listas ── */
    .table-responsive { overflow-x: auto; -webkit-overflow-scrolling: touch; }
}

/* ── Mobile pequeno (≤480px) ── */
@media (max-width: 480px) {
    .container { padding: 0 16px; }

    /* ── Hero ── */
    .hero h1 { font-size: 1.25rem; }
    .hero p { font-size: 0.875rem; }
    .hero-actions { flex-direction: column; }
    .hero-actions .btn { width: 100%; justify-content: center; }
    .hero-stats { gap: 12px; }

    /* ── Dashboard ── */
    .dashboard-stats { grid-template-columns: 1fr; }
    .dashboard-content { padding: 12px; }

    /* ── Section ── */
    .section-header h2 { font-size: 1.25rem; }

    /* ── Cards ── */
    .card { padding: 16px; }

    /* ── Buttons ── */
    .btn { padding: 8px 18px; font-size: 0.8125rem; }
    .btn-sm { padding: 5px 12px; font-size: 0.75rem; }
    .btn-lg { padding: 10px 20px; }

    /* ── Auth ── */
    .auth-card { padding: 20px 16px; }

    /* ── Plano ── */
    .plano-preco .valor { font-size: 1.5rem; }
    .plano-card { padding: 20px 16px; }

    /* ── Footer ── */
    .footer-col a { font-size: 0.85rem; }

    /* ── Sidebar ── */
    .sidebar { width: 260px; }

    /* ── Modals ── */
    .modal-content { padding: 20px; }

    /* ── Stats ── */
    .stat-card { padding: 12px; }
    .stat-card h3 { font-size: 1.1rem; }

    /* ── Forms ── */
    .sidebar-toggle { width: 32px; height: 32px; font-size: 1rem; }

    /* ── Search / inline forms ── */
    .search-flex { flex-direction: column; }
    .search-flex input { width: 100%; }
}

/* ── Landscape phone fix ── */
@media (max-height: 500px) {
    .hero { padding: 56px 0 24px; }
    .hero h1 { font-size: 1.15rem; }
    .hero-stats { margin-top: 16px; }
    .hero-stat h3 { font-size: 1.1rem; }
    .section { padding: 24px 0; }
}

/* ── Sidebar - Beta Badge ── */
.badge-beta-sidebar {
    font-size: 0.55rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    padding: 1px 5px;
    border-radius: 999px;
    background: rgba(245,158,11,0.15);
    color: var(--warning);
    border: 1px solid var(--warning);
    line-height: 1.4;
}

/* ── Print ── */
@media print {
    .sidebar, .navbar, .footer, .btn { display: none !important; }
    .dashboard-content { margin-left: 0 !important; }
    .main-dashboard { display: block !important; height: auto !important; overflow: visible !important; }
}