/* ─── BuildMyAppAI — Global Styles ─── */
:root {
    --primary: #2563EB;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --primary-bg: #eff6ff;
    --accent: #06b6d4;
    --dark: #0f172a;
    --dark-2: #1e293b;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    --radius: 12px;
    --radius-sm: 8px;
    --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 4px 12px rgba(0,0,0,0.05);
    --shadow-lg: 0 4px 24px rgba(0,0,0,0.1);
    --shadow-xl: 0 8px 40px rgba(0,0,0,0.12);
    --transition: all 0.2s ease;
}

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

html { scroll-behavior: smooth; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--dark);
    background: var(--gray-50);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary-dark); }

img { max-width: 100%; height: auto; }

/* ─── Typography ─── */
h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.2; color: var(--dark); }
h1 { font-size: 3rem; }
h2 { font-size: 2.25rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
p { color: var(--gray-600); }

/* ─── Container ─── */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.container-sm { max-width: 800px; margin: 0 auto; padding: 0 24px; }
.container-xs { max-width: 480px; margin: 0 auto; padding: 0 24px; }

/* ─── Buttons ─── */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 12px 24px; border-radius: var(--radius-sm); font-weight: 600;
    font-size: 0.95rem; border: none; cursor: pointer; transition: var(--transition);
    text-decoration: none; line-height: 1.4;
}
.btn:hover { transform: translateY(-1px); box-shadow: var(--shadow-lg); }
.btn:active { transform: translateY(0); }

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

.btn-secondary { background: white; color: var(--dark); border: 1px solid var(--gray-200); }
.btn-secondary:hover { background: var(--gray-50); border-color: var(--gray-300); color: var(--dark); }

.btn-accent { background: var(--accent); color: white; }
.btn-accent:hover { background: #0891b2; color: white; }

.btn-danger { background: var(--error); color: white; }
.btn-danger:hover { background: #dc2626; color: white; }

.btn-ghost { background: transparent; color: var(--primary); padding: 8px 16px; }
.btn-ghost:hover { background: var(--primary-bg); }

.btn-lg { padding: 16px 32px; font-size: 1.1rem; border-radius: var(--radius); }
.btn-sm { padding: 8px 16px; font-size: 0.85rem; }
.btn-full { width: 100%; }
.btn-icon { width: 40px; height: 40px; padding: 0; border-radius: 50%; }

/* ─── Navbar ─── */
.navbar {
    position: sticky; top: 0; z-index: 1000;
    background: rgba(255,255,255,0.92); backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--gray-200);
    padding: 0 24px; height: 64px;
}
.navbar .container { display: flex; align-items: center; justify-content: space-between; height: 100%; }
.navbar-brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 1.25rem; color: var(--dark); }
.navbar-brand span { color: var(--primary); }
.navbar-brand:hover { color: var(--dark); }
.nav-links { display: flex; align-items: center; gap: 8px; list-style: none; }
.nav-links a {
    padding: 8px 16px; border-radius: var(--radius-sm); color: var(--gray-600);
    font-weight: 500; font-size: 0.9rem; transition: var(--transition);
}
.nav-links a:hover { color: var(--primary); background: var(--primary-bg); }
.nav-links .active { color: var(--primary); background: var(--primary-bg); }

.mobile-toggle { display: none; background: none; border: none; font-size: 1.5rem; cursor: pointer; color: var(--dark); padding: 8px; }

/* ─── Hero ─── */
.hero {
    padding: 100px 24px 80px;
    text-align: center;
    background: linear-gradient(135deg, var(--primary-bg) 0%, #dbeafe 50%, #e0e7ff 100%);
    position: relative; overflow: hidden;
}
.hero::before {
    content: ''; position: absolute; top: -200px; right: -200px;
    width: 600px; height: 600px; border-radius: 50%;
    background: radial-gradient(circle, rgba(37,99,235,0.08) 0%, transparent 70%);
}
.hero h1 { font-size: 3.5rem; margin-bottom: 20px; letter-spacing: -0.02em; max-width: 800px; margin-left: auto; margin-right: auto; }
.hero h1 span { background: linear-gradient(135deg, var(--primary), var(--accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero p { font-size: 1.25rem; color: var(--gray-500); max-width: 600px; margin: 0 auto 32px; }
.hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.hero-badge {
    display: inline-flex; align-items: center; gap: 8px;
    background: white; padding: 8px 20px; border-radius: 100px;
    font-size: 0.85rem; color: var(--gray-600); margin-bottom: 24px;
    box-shadow: var(--shadow); border: 1px solid var(--gray-200);
}
.hero-badge i { color: var(--primary); }

/* ─── Feature Cards ─── */
.section { padding: 80px 24px; }
.section-dark { background: var(--dark); color: white; }
.section-dark h2, .section-dark h3, .section-dark h4 { color: white; }
.section-dark p { color: var(--gray-400); }
.section-title { text-align: center; margin-bottom: 48px; }
.section-title h2 { margin-bottom: 12px; }
.section-title p { font-size: 1.1rem; max-width: 600px; margin: 0 auto; }

.grid { display: grid; gap: 24px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
    background: white; border-radius: var(--radius); padding: 32px;
    border: 1px solid var(--gray-200); transition: var(--transition);
}
.card:hover { box-shadow: var(--shadow-lg); border-color: var(--gray-300); transform: translateY(-2px); }

.feature-card { text-align: center; }
.feature-icon {
    width: 64px; height: 64px; border-radius: 16px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.5rem; margin: 0 auto 20px;
    background: var(--primary-bg); color: var(--primary);
}
.feature-card h3 { margin-bottom: 8px; font-size: 1.2rem; }
.feature-card p { font-size: 0.95rem; }

/* ─── Tool Cards (Dashboard) ─── */
.tool-card {
    display: flex; flex-direction: column; gap: 16px;
    padding: 24px; cursor: pointer; text-decoration: none;
}
.tool-card:hover { border-color: var(--primary); }
.tool-card .tool-icon {
    width: 48px; height: 48px; border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.2rem; background: var(--primary-bg); color: var(--primary);
}
.tool-card h4 { color: var(--dark); }
.tool-card p { font-size: 0.9rem; margin: 0; }

/* ─── Dashboard ─── */
.dashboard-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 32px; flex-wrap: wrap; gap: 16px; }
.stats-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin-bottom: 32px; }
.stat-card { background: white; border: 1px solid var(--gray-200); border-radius: var(--radius); padding: 24px; }
.stat-card .stat-value { font-size: 2rem; font-weight: 800; color: var(--primary); }
.stat-card .stat-label { font-size: 0.85rem; color: var(--gray-500); margin-top: 4px; }

.usage-bar-container { margin-top: 8px; }
.usage-bar { height: 8px; border-radius: 4px; background: var(--gray-200); overflow: hidden; }
.usage-bar-fill { height: 100%; border-radius: 4px; background: linear-gradient(90deg, var(--primary), var(--accent)); transition: width 0.5s ease; }

/* ─── Project List ─── */
.project-item {
    display: flex; align-items: center; gap: 16px;
    padding: 20px 24px; background: white; border: 1px solid var(--gray-200);
    border-radius: var(--radius); transition: var(--transition); margin-bottom: 12px;
}
.project-item:hover { box-shadow: var(--shadow); border-color: var(--gray-300); }
.project-type-badge {
    padding: 4px 12px; border-radius: 100px; font-size: 0.75rem; font-weight: 600;
    background: var(--primary-bg); color: var(--primary); white-space: nowrap;
}
.project-info { flex: 1; min-width: 0; }
.project-info h4 { margin-bottom: 2px; }
.project-info p { font-size: 0.85rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.project-date { font-size: 0.8rem; color: var(--gray-400); white-space: nowrap; }

/* ─── Tool Page ─── */
.tool-header { display: flex; align-items: center; gap: 16px; margin-bottom: 32px; }
.tool-header .tool-icon {
    width: 56px; height: 56px; border-radius: 16px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.5rem; background: var(--primary-bg); color: var(--primary);
}
.tool-header h1 { font-size: 2rem; }

/* ─── Forms ─── */
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-weight: 600; font-size: 0.9rem; margin-bottom: 6px; color: var(--dark); }
.form-input {
    width: 100%; padding: 12px 16px; border: 1px solid var(--gray-200);
    border-radius: var(--radius-sm); font-size: 0.95rem; font-family: inherit;
    transition: var(--transition); background: white; color: var(--dark);
}
.form-input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37,99,235,0.1); }
textarea.form-input { min-height: 200px; resize: vertical; line-height: 1.6; }

/* ─── Code Output ─── */
.code-output {
    background: var(--dark); color: #e2e8f0; border-radius: var(--radius);
    padding: 24px; overflow-x: auto; font-family: 'JetBrains Mono', 'Fira Code', monospace;
    font-size: 0.85rem; line-height: 1.7; white-space: pre-wrap; word-wrap: break-word;
    border: 1px solid var(--dark-2);
}
.code-output-header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 12px 24px; background: var(--dark-2); border-radius: var(--radius) var(--radius) 0 0;
    border: 1px solid var(--dark-2); border-bottom: none;
}
.code-output-header span { font-size: 0.85rem; color: var(--gray-400); font-weight: 600; }
.code-output.has-header { border-radius: 0 0 var(--radius) var(--radius); }

.copy-btn {
    padding: 6px 14px; background: var(--gray-700); color: var(--gray-300);
    border: none; border-radius: 6px; font-size: 0.8rem; cursor: pointer;
    transition: var(--transition);
}
.copy-btn:hover { background: var(--gray-600); color: white; }

/* ─── Pricing ─── */
.pricing-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 24px; align-items: start; }
.price-card {
    background: white; border: 2px solid var(--gray-200); border-radius: var(--radius);
    padding: 36px 28px; text-align: center; transition: var(--transition); position: relative;
}
.price-card:hover { box-shadow: var(--shadow-xl); }
.price-card.popular { border-color: var(--primary); }
.price-card.popular::before {
    content: 'Most Popular'; position: absolute; top: -14px; left: 50%; transform: translateX(-50%);
    background: var(--primary); color: white; padding: 4px 20px; border-radius: 100px;
    font-size: 0.8rem; font-weight: 700;
}
.price-card h3 { margin-bottom: 8px; }
.price-amount { font-size: 3rem; font-weight: 800; color: var(--dark); margin: 16px 0; }
.price-amount span { font-size: 1rem; font-weight: 500; color: var(--gray-500); }
.price-features { list-style: none; text-align: left; margin: 24px 0; }
.price-features li { padding: 8px 0; font-size: 0.9rem; color: var(--gray-600); display: flex; align-items: center; gap: 10px; }
.price-features li i { color: var(--success); font-size: 0.85rem; }

/* ─── Templates Marketplace ─── */
.template-filters { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 32px; }
.filter-btn {
    padding: 8px 20px; border-radius: 100px; border: 1px solid var(--gray-200);
    background: white; color: var(--gray-600); font-size: 0.85rem; font-weight: 500;
    cursor: pointer; transition: var(--transition);
}
.filter-btn:hover, .filter-btn.active { background: var(--primary); color: white; border-color: var(--primary); }

.template-card { overflow: hidden; }
.template-card .template-icon {
    width: 48px; height: 48px; border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.3rem; background: var(--primary-bg); color: var(--primary); margin-bottom: 16px;
}
.template-card h4 { margin-bottom: 8px; }
.template-card p { font-size: 0.9rem; margin-bottom: 16px; }
.template-meta { display: flex; align-items: center; justify-content: space-between; }
.template-downloads { font-size: 0.8rem; color: var(--gray-400); }

/* ─── Auth Pages ─── */
.auth-page { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 40px 24px; background: var(--gray-50); }
.auth-card { width: 100%; max-width: 440px; background: white; border-radius: var(--radius); padding: 40px; box-shadow: var(--shadow-lg); border: 1px solid var(--gray-200); }
.auth-card h1 { font-size: 1.75rem; margin-bottom: 8px; text-align: center; }
.auth-card .subtitle { text-align: center; margin-bottom: 32px; }
.auth-divider { text-align: center; margin: 24px 0; color: var(--gray-400); font-size: 0.85rem; }

/* ─── Alerts ─── */
.alert {
    padding: 14px 20px; border-radius: var(--radius-sm); margin-bottom: 20px;
    font-size: 0.9rem; display: flex; align-items: center; gap: 10px;
}
.alert-success { background: #ecfdf5; color: #065f46; border: 1px solid #a7f3d0; }
.alert-error { background: #fef2f2; color: #991b1b; border: 1px solid #fecaca; }
.alert-info { background: var(--primary-bg); color: #1e40af; border: 1px solid #bfdbfe; }
.alert-warning { background: #fffbeb; color: #92400e; border: 1px solid #fde68a; }

/* ─── Footer ─── */
.footer {
    background: var(--dark); color: var(--gray-400); padding: 60px 24px 32px;
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer h4 { color: white; margin-bottom: 16px; font-size: 1rem; }
.footer-links { list-style: none; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { color: var(--gray-400); font-size: 0.9rem; }
.footer-links a:hover { color: white; }
.footer-brand { font-size: 1.1rem; font-weight: 700; color: white; margin-bottom: 12px; }
.footer-brand span { color: var(--primary-light); }
.footer-bottom { border-top: 1px solid var(--dark-2); padding-top: 24px; text-align: center; font-size: 0.85rem; }

/* ─── Misc ─── */
.badge {
    display: inline-flex; padding: 4px 10px; border-radius: 100px;
    font-size: 0.75rem; font-weight: 600;
}
.badge-primary { background: var(--primary-bg); color: var(--primary); }
.badge-success { background: #ecfdf5; color: #065f46; }
.badge-warning { background: #fffbeb; color: #92400e; }

.empty-state { text-align: center; padding: 60px 24px; }
.empty-state i { font-size: 3rem; color: var(--gray-300); margin-bottom: 16px; }
.empty-state h3 { color: var(--gray-500); margin-bottom: 8px; }
.empty-state p { margin-bottom: 24px; }

.loading-spinner {
    display: inline-block; width: 20px; height: 20px;
    border: 2px solid rgba(255,255,255,0.3); border-top-color: white;
    border-radius: 50%; animation: spin 0.6s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.plan-badge {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 4px 14px; border-radius: 100px; font-size: 0.8rem; font-weight: 700;
    text-transform: uppercase; letter-spacing: 0.05em;
}
.plan-free { background: var(--gray-100); color: var(--gray-600); }
.plan-starter { background: #ecfdf5; color: #065f46; }
.plan-pro { background: var(--primary-bg); color: var(--primary); }
.plan-business { background: #fef3c7; color: #92400e; }

/* ─── Responsive ─── */
@media (max-width: 1024px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    h1 { font-size: 2.25rem; }
    h2 { font-size: 1.75rem; }
    .hero { padding: 60px 24px 50px; }
    .hero h1 { font-size: 2.5rem; }
    .hero p { font-size: 1.05rem; }
    .section { padding: 60px 24px; }
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .pricing-grid { grid-template-columns: 1fr; max-width: 400px; margin: 0 auto; }
    .nav-links { display: none; flex-direction: column; position: absolute; top: 64px; left: 0; right: 0; background: white; border-bottom: 1px solid var(--gray-200); padding: 16px; box-shadow: var(--shadow-lg); }
    .nav-links.active { display: flex; }
    .mobile-toggle { display: block; }
    .dashboard-header { flex-direction: column; align-items: flex-start; }
    .footer-grid { grid-template-columns: 1fr; }
    .tool-header h1 { font-size: 1.5rem; }
}

@media (max-width: 480px) {
    .hero h1 { font-size: 2rem; }
    .card { padding: 20px; }
    .auth-card { padding: 28px; }
    .hero-actions { flex-direction: column; align-items: center; }
}