/* ============================================================
   MEMBOOK DESIGN SYSTEM v2
   Unified theme for all pages (public + dashboard)
   Dark slate palette, emerald accents
   ============================================================ */

:root {
    --bg-deep: #0a0e17;
    --bg-primary: #0f172a;
    --bg-surface: #1e293b;
    --bg-elevated: #334155;
    --bg-card: #1a2332;
    --border-subtle: #475569;
    --border-accent: #10b981;

    --text-primary: #f4f4f5;
    --text-secondary: #a1a1aa;
    --text-muted: #71717a;

    --accent-emerald: #10b981;
    --accent-emerald-hover: #0da271;
    --accent-blue: #3b82f6;
    --accent-purple: #8b5cf6;
    --accent-amber: #f59e0b;
    --accent-red: #ef4444;

    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;

    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.4);
    --shadow-lg: 0 8px 30px rgba(0,0,0,0.5);
}

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

html { scroll-behavior: smooth; }

body {
    font-family: var(--font-sans);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

a { color: var(--accent-emerald); text-decoration: none; transition: color 0.2s; }
a:hover { color: #34d399; }

h1, h2, h3, h4, h5, h6 { color: var(--text-primary); font-weight: 600; line-height: 1.3; }
h1 { font-size: 2.5rem; letter-spacing: -0.02em; }
h2 { font-size: 2rem; letter-spacing: -0.01em; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

p { color: var(--text-secondary); }
small { color: var(--text-muted); }

/* ---------- NAVIGATION ---------- */
.navbar-membook {
    background: linear-gradient(180deg, var(--bg-deep) 0%, var(--bg-primary) 100%);
    border-bottom: 1px solid var(--border-subtle);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(12px);
}
.navbar-membook .container { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; }
.navbar-membook .nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.navbar-membook .brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}
.navbar-membook .brand-icon {
    color: var(--accent-emerald);
    font-size: 1.5rem;
}
.navbar-membook .nav-links {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    list-style: none;
}
.navbar-membook .nav-link {
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    transition: all 0.15s;
}
.navbar-membook .nav-link:hover {
    color: var(--text-primary);
    background: rgba(255,255,255,0.05);
}
.navbar-membook .nav-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

/* Mobile nav toggle */
.nav-membook-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
}
@media (max-width: 768px) {
    .nav-membook-toggle { display: block; }
    .navbar-membook .nav-links,
    .navbar-membook .nav-actions {
        display: none;
    }
    .navbar-membook .nav-links.active,
    .navbar-membook .nav-actions.active {
        display: flex;
        flex-direction: column;
    }
    .nav-mobile-expanded .nav-links,
    .nav-mobile-expanded .nav-actions {
        display: flex;
        flex-direction: column;
    }
}

/* ---------- BUTTONS ---------- */
.btn-membook {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1.5rem;
    font-size: 0.9rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    border: none;
    cursor: pointer;
    transition: all 0.15s;
    text-decoration: none;
    font-family: var(--font-sans);
}
.btn-membook-primary {
    background: var(--accent-emerald);
    color: #000;
}
.btn-membook-primary:hover {
    background: var(--accent-emerald-hover);
    color: #000;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(16,185,129,0.3);
}
.btn-membook-outline {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-subtle);
}
.btn-membook-outline:hover {
    border-color: var(--accent-emerald);
    color: var(--accent-emerald);
}
.btn-membook-secondary {
    background: var(--bg-elevated);
    color: var(--text-primary);
    border: 1px solid var(--border-subtle);
}
.btn-membook-secondary:hover {
    background: var(--border-subtle);
    color: var(--text-primary);
}
.btn-membook-ghost {
    background: transparent;
    color: var(--text-secondary);
    padding: 0.5rem 0.75rem;
}
.btn-membook-ghost:hover {
    color: var(--text-primary);
    background: rgba(255,255,255,0.05);
}
.btn-membook-lg {
    padding: 0.875rem 2rem;
    font-size: 1rem;
}

/* ---------- CARDS ---------- */
.card-membook {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    transition: all 0.2s;
}
.card-membook:hover {
    border-color: var(--accent-emerald);
    box-shadow: 0 0 0 1px var(--accent-emerald), var(--shadow-md);
}
.card-header-membook {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

/* ---------- HERO ---------- */
.hero-membook {
    background: linear-gradient(180deg, var(--bg-deep) 0%, var(--bg-primary) 100%);
    padding: 6rem 0 4rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.hero-membook::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: radial-gradient(ellipse at 50% 0%, rgba(16,185,129,0.08) 0%, transparent 70%);
    pointer-events: none;
}
.hero-membook .container { max-width: 900px; margin: 0 auto; padding: 0 1.5rem; position: relative; z-index: 1; }
.hero-membook h1 {
    font-size: 3rem;
    letter-spacing: -0.03em;
    line-height: 1.1;
    margin-bottom: 1.25rem;
    color: var(--text-primary);
}
.hero-membook h1 .highlight { color: var(--accent-emerald); }
.hero-membook .subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 2rem;
}
.hero-membook .actions {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

/* ---------- SECTIONS ---------- */
.section-membook {
    padding: 5rem 0;
}
.section-membook .container { max-width: 1100px; margin: 0 auto; padding: 0 1.5rem; }
.section-membook h2 {
    text-align: center;
    margin-bottom: 1rem;
}
.section-membook .section-lead {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 3rem;
}

/* ---------- GRID ---------- */
.grid-membook {
    display: grid;
    gap: 1.5rem;
}
.grid-col-2 { grid-template-columns: repeat(2, 1fr); }
.grid-col-3 { grid-template-columns: repeat(3, 1fr); }
.grid-col-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 992px) {
    .grid-col-3, .grid-col-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 576px) {
    .grid-col-2, .grid-col-3, .grid-col-4 { grid-template-columns: 1fr; }
    .hero-membook h1 { font-size: 2rem; }
}

/* ---------- STATS ---------- */
.stat-membook {
    text-align: center;
    padding: 2rem;
}
.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent-emerald);
    line-height: 1;
    margin-bottom: 0.5rem;
}
.stat-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* ---------- BADGE ---------- */
.badge-membook {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 999px;
    background: rgba(16,185,129,0.15);
    color: var(--accent-emerald);
    border: 1px solid rgba(16,185,129,0.3);
}

/* ---------- TABLE ---------- */
.table-membook {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}
.table-membook th, .table-membook td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border-subtle);
    text-align: left;
}
.table-membook th {
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.table-membook td { color: var(--text-primary); }

/* ---------- DIVIDER ---------- */
.divider-membook {
    border: none;
    border-top: 1px solid var(--border-subtle);
    margin: 0;
}

/* ---------- FOOTER ---------- */
.footer-membook {
    background: var(--bg-deep);
    border-top: 1px solid var(--border-subtle);
    padding: 3rem 0 2rem;
}
.footer-membook .container { max-width: 1100px; margin: 0 auto; padding: 0 1.5rem; }
.footer-brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}
.footer-membook h5 {
    color: var(--text-primary);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
}
.footer-membook ul { list-style: none; }
.footer-membook li { margin-bottom: 0.5rem; }
.footer-membook .footer-link {
    color: var(--text-secondary);
    font-size: 0.9rem;
}
.footer-membook .footer-link:hover { color: var(--accent-emerald); }
.footer-copyright {
    padding-top: 2rem;
    margin-top: 2rem;
    border-top: 1px solid var(--border-subtle);
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* ---------- FORM ---------- */
input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="tel"],
input[type="url"],
textarea,
select {
    width: 100%;
    padding: 0.625rem 1rem;
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 0.9rem;
    transition: border-color 0.15s;
}
input:focus, textarea:focus, select:focus {
    outline: none;
    border-color: var(--accent-emerald);
    box-shadow: 0 0 0 3px rgba(16,185,129,0.15);
}
label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 0.375rem;
}

/* ---------- ALERTS ---------- */
.alert-membook {
    padding: 1rem 1.25rem;
    border-radius: var(--radius-md);
    border: 1px solid;
    font-size: 0.9rem;
}
.alert-success { background: rgba(16,185,129,0.1); border-color: rgba(16,185,129,0.3); color: #34d399; }
.alert-warning { background: rgba(245,158,11,0.1); border-color: rgba(245,158,11,0.3); color: #fbbf24; }
.alert-danger   { background: rgba(239,68,68,0.1);  border-color: rgba(239,68,68,0.3);  color: #f87171; }
.alert-info      { background: rgba(59,130,246,0.1); border-color: rgba(59,130,246,0.3); color: #60a5fa; }

/* ---------- UTILITY ---------- */
.text-center { text-align: center; }
.text-emerald { color: var(--accent-emerald); }
.text-muted { color: var(--text-muted); }
.mt-4 { margin-top: 2rem; }
.mb-4 { margin-bottom: 2rem; }
.mb-2 { margin-bottom: 0.75rem; }
.py-2 { padding-top: 0.5rem; padding-bottom: 0.5rem; }
.py-3 { padding-top: 1rem; padding-bottom: 1rem; }
.gap-4 { gap: 2rem; }
.flex { display: flex; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.hidden { display: none; }