/* ============================================================
   BuildMyBrandAI — Purple Theme
   ============================================================ */
:root {
    --primary: #8B5CF6;
    --primary-dark: #7C3AED;
    --primary-light: #A78BFA;
    --primary-bg: #F5F3FF;
    --accent: #EC4899;
    --dark: #1E1B4B;
    --gray-900: #111827;
    --gray-700: #374151;
    --gray-500: #6B7280;
    --gray-300: #D1D5DB;
    --gray-100: #F3F4F6;
    --white: #FFFFFF;
    --success: #10B981;
    --warning: #F59E0B;
    --danger: #EF4444;
    --radius: 12px;
    --shadow: 0 4px 24px rgba(139, 92, 246, .12);
    --shadow-lg: 0 12px 48px rgba(139, 92, 246, .18);
    --transition: .25s cubic-bezier(.4,0,.2,1);
}

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

html { scroll-behavior: smooth; }
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--gray-900);
    background: var(--white);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}
a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--primary-dark); }

/* ---- Layout ---- */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }
.section-sm { padding: 48px 0; }

/* ---- Navbar ---- */
.navbar {
    position: sticky; top: 0; z-index: 100;
    background: rgba(255,255,255,.92);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--gray-100);
    padding: 16px 0;
}
.navbar .container { display: flex; align-items: center; justify-content: space-between; }
.nav-brand {
    font-size: 1.4rem; font-weight: 800; color: var(--dark);
    display: flex; align-items: center; gap: 8px;
}
.nav-brand span { color: var(--primary); }
.nav-links { display: flex; align-items: center; gap: 24px; list-style: none; }
.nav-links a { color: var(--gray-700); font-weight: 500; font-size: .95rem; }
.nav-links a:hover { color: var(--primary); }
.nav-toggle { display: none; background: none; border: none; cursor: pointer; }
.nav-toggle span {
    display: block; width: 24px; height: 2px; background: var(--gray-700);
    margin: 5px 0; transition: var(--transition);
}

/* ---- Buttons ---- */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 12px 28px; border-radius: var(--radius); font-weight: 600;
    font-size: .95rem; border: none; cursor: pointer;
    transition: all var(--transition); text-decoration: none;
}
.btn-primary { background: var(--primary); color: var(--white); }
.btn-primary:hover { background: var(--primary-dark); color: var(--white); transform: translateY(-2px); box-shadow: var(--shadow); }
.btn-outline { background: transparent; color: var(--primary); border: 2px solid var(--primary); }
.btn-outline:hover { background: var(--primary); color: var(--white); }
.btn-accent { background: var(--accent); color: var(--white); }
.btn-accent:hover { background: #DB2777; color: var(--white); }
.btn-sm { padding: 8px 18px; font-size: .85rem; }
.btn-lg { padding: 16px 36px; font-size: 1.05rem; }
.btn-block { width: 100%; }

/* ---- Hero ---- */
.hero {
    background: linear-gradient(135deg, var(--dark) 0%, #312E81 50%, var(--primary) 100%);
    color: var(--white);
    padding: 100px 0 120px;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.hero::before {
    content: '';
    position: absolute; inset: 0;
    background: radial-gradient(circle at 30% 50%, rgba(139,92,246,.3) 0%, transparent 60%),
                radial-gradient(circle at 70% 80%, rgba(236,72,153,.2) 0%, transparent 50%);
}
.hero .container { position: relative; z-index: 1; }
.hero h1 { font-size: clamp(2.2rem, 5vw, 3.8rem); font-weight: 800; margin-bottom: 20px; line-height: 1.15; }
.hero p { font-size: 1.2rem; max-width: 640px; margin: 0 auto 36px; opacity: .9; }
.hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ---- Cards ---- */
.card {
    background: var(--white); border-radius: var(--radius);
    border: 1px solid var(--gray-100);
    padding: 32px; transition: all var(--transition);
}
.card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); border-color: var(--primary-light); }
.card-icon {
    width: 56px; height: 56px; border-radius: 14px;
    background: var(--primary-bg); color: var(--primary);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.5rem; margin-bottom: 20px;
}
.card h3 { font-size: 1.2rem; margin-bottom: 10px; }
.card p { color: var(--gray-500); font-size: .95rem; }

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

/* ---- Feature section ---- */
.section-header { text-align: center; max-width: 640px; margin: 0 auto 48px; }
.section-header h2 { font-size: 2rem; font-weight: 800; margin-bottom: 12px; color: var(--dark); }
.section-header p { color: var(--gray-500); font-size: 1.05rem; }
.badge { display: inline-block; padding: 6px 14px; border-radius: 999px; font-size: .8rem; font-weight: 600; background: var(--primary-bg); color: var(--primary); margin-bottom: 12px; }

/* ---- Pricing ---- */
.pricing-card {
    background: var(--white); border-radius: var(--radius);
    border: 2px solid var(--gray-100); padding: 40px 32px;
    text-align: center; transition: all var(--transition);
}
.pricing-card.featured { border-color: var(--primary); position: relative; }
.pricing-card.featured::before {
    content: 'Most Popular'; position: absolute; top: -14px; left: 50%; transform: translateX(-50%);
    background: var(--primary); color: var(--white); padding: 4px 20px; border-radius: 999px;
    font-size: .8rem; font-weight: 600;
}
.pricing-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.pricing-card h3 { font-size: 1.3rem; margin-bottom: 8px; }
.pricing-amount { font-size: 3rem; font-weight: 800; color: var(--dark); margin: 16px 0; }
.pricing-amount span { font-size: 1rem; color: var(--gray-500); font-weight: 400; }
.pricing-features { list-style: none; margin: 24px 0; text-align: left; }
.pricing-features li { padding: 8px 0; color: var(--gray-700); font-size: .95rem; display: flex; align-items: center; gap: 10px; }
.pricing-features li::before { content: '\2713'; color: var(--success); font-weight: 700; }

/* ---- Forms ---- */
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-weight: 600; margin-bottom: 6px; font-size: .9rem; color: var(--gray-700); }
.form-control {
    width: 100%; padding: 12px 16px; border-radius: var(--radius);
    border: 2px solid var(--gray-300); font-size: .95rem;
    transition: border-color var(--transition); background: var(--white);
    font-family: inherit;
}
.form-control:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 4px rgba(139,92,246,.15); }
textarea.form-control { resize: vertical; min-height: 100px; }
select.form-control { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236B7280' d='M6 8L1 3h10z'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 16px center; }

/* ---- Auth pages ---- */
.auth-wrapper {
    min-height: 100vh; display: flex; align-items: center; justify-content: center;
    background: linear-gradient(135deg, var(--dark), #312E81);
    padding: 24px;
}
.auth-card {
    background: var(--white); border-radius: var(--radius);
    padding: 48px 40px; width: 100%; max-width: 440px;
    box-shadow: var(--shadow-lg);
}
.auth-card h2 { text-align: center; margin-bottom: 8px; font-size: 1.6rem; }
.auth-card .sub { text-align: center; color: var(--gray-500); margin-bottom: 32px; }

/* ---- Dashboard ---- */
.dash-header { padding: 40px 0 20px; }
.dash-header h1 { font-size: 1.8rem; }
.stats-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-bottom: 32px; }
.stat-card {
    background: var(--white); border-radius: var(--radius);
    border: 1px solid var(--gray-100); padding: 24px;
}
.stat-card .stat-value { font-size: 2rem; font-weight: 800; color: var(--primary); }
.stat-card .stat-label { color: var(--gray-500); font-size: .85rem; margin-top: 4px; }

.tool-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 32px; }
.tool-card {
    background: var(--white); border-radius: var(--radius);
    border: 1px solid var(--gray-100); padding: 28px;
    text-align: center; transition: all var(--transition);
    text-decoration: none; color: inherit;
}
.tool-card:hover { border-color: var(--primary); box-shadow: var(--shadow); transform: translateY(-3px); color: inherit; }
.tool-card .tool-icon { font-size: 2.2rem; margin-bottom: 12px; }
.tool-card h3 { font-size: 1rem; margin-bottom: 6px; }
.tool-card p { font-size: .85rem; color: var(--gray-500); }

/* ---- Tool pages ---- */
.tool-page { padding: 40px 0 80px; }
.tool-page h1 { font-size: 1.8rem; margin-bottom: 8px; }
.tool-page .subtitle { color: var(--gray-500); margin-bottom: 32px; }
.tool-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; align-items: start; }
.result-box {
    background: var(--gray-100); border-radius: var(--radius);
    padding: 28px; min-height: 300px; white-space: pre-wrap;
    font-size: .9rem; line-height: 1.7; overflow-x: auto;
}
.result-box h1, .result-box h2, .result-box h3 { margin: 16px 0 8px; color: var(--dark); }
.result-box code { background: var(--white); padding: 2px 6px; border-radius: 4px; font-size: .85rem; }

/* ---- Color swatches ---- */
.palette-swatches { display: flex; gap: 12px; margin-bottom: 20px; flex-wrap: wrap; }
.swatch {
    width: 80px; height: 80px; border-radius: 12px;
    display: flex; align-items: flex-end; justify-content: center;
    padding-bottom: 8px; font-size: .7rem; font-weight: 700;
    color: var(--white); text-shadow: 0 1px 3px rgba(0,0,0,.5);
    box-shadow: var(--shadow);
}

/* ---- Flash messages ---- */
.flash-messages { padding: 12px 0; }
.flash {
    padding: 14px 20px; border-radius: var(--radius);
    margin-bottom: 12px; font-size: .9rem; font-weight: 500;
}
.flash-success { background: #D1FAE5; color: #065F46; }
.flash-danger { background: #FEE2E2; color: #991B1B; }
.flash-warning { background: #FEF3C7; color: #92400E; }
.flash-info { background: #EDE9FE; color: #5B21B6; }

/* ---- Footer ---- */
.footer {
    background: var(--dark); color: rgba(255,255,255,.6);
    padding: 48px 0 24px; font-size: .9rem;
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; margin-bottom: 32px; }
.footer h4 { color: var(--white); margin-bottom: 16px; }
.footer a { color: rgba(255,255,255,.6); }
.footer a:hover { color: var(--primary-light); }
.footer-links { list-style: none; }
.footer-links li { margin-bottom: 10px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); padding-top: 20px; text-align: center; }

/* ---- Table ---- */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 12px 16px; text-align: left; border-bottom: 1px solid var(--gray-100); font-size: .9rem; }
th { font-weight: 600; color: var(--gray-500); font-size: .8rem; text-transform: uppercase; letter-spacing: .5px; }
tr:hover td { background: var(--primary-bg); }

/* ---- Plan badge ---- */
.plan-badge {
    display: inline-block; padding: 4px 12px; border-radius: 999px;
    font-size: .75rem; font-weight: 700; text-transform: uppercase;
}
.plan-free { background: var(--gray-100); color: var(--gray-500); }
.plan-starter { background: #D1FAE5; color: #065F46; }
.plan-pro { background: #EDE9FE; color: #5B21B6; }

/* ---- Spinner ---- */
.spinner {
    display: inline-block; width: 20px; height: 20px;
    border: 3px solid var(--gray-300); border-top-color: var(--primary);
    border-radius: 50%; animation: spin .6s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---- Responsive ---- */
@media (max-width: 900px) {
    .grid-3, .tool-grid { grid-template-columns: repeat(2, 1fr); }
    .stats-row { grid-template-columns: repeat(2, 1fr); }
    .tool-layout { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
    .grid-3, .grid-2, .tool-grid, .stats-row { grid-template-columns: 1fr; }
    .hero { padding: 60px 0 80px; }
    .hero h1 { font-size: 2rem; }
    .nav-links { display: none; position: absolute; top: 100%; left: 0; right: 0; background: var(--white); padding: 20px; flex-direction: column; border-bottom: 1px solid var(--gray-100); }
    .nav-links.active { display: flex; }
    .nav-toggle { display: block; }
    .auth-card { padding: 32px 24px; }
    .pricing-card { padding: 28px 20px; }
}