/* ================================================
   DATAKANU PROGRAMS — Dark SaaS Theme
   ================================================ */

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

:root {
    --primary: #1B365D;
    --accent: #32E0FF;
    --accent-dark: #1cbfdb;
    --accent-glow: rgba(50, 224, 255, 0.15);
    --bg-deep: #0a0f1a;
    --bg-dark: #0d1520;
    --bg-card: #111b2b;
    --bg-card-hover: #152238;
    --bg-surface: #0f1923;
    --text-white: #FFFFFF;
    --text-light: #c8d6e5;
    --text-muted: #7a8ba3;
    --border-subtle: rgba(50, 224, 255, 0.08);
    --border-card: rgba(50, 224, 255, 0.1);
    --border-accent: rgba(50, 224, 255, 0.25);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
    --shadow-cyan: 0 4px 25px rgba(50, 224, 255, 0.15);
    --gradient-cta: linear-gradient(135deg, #32E0FF 0%, #1cbfdb 100%);
    --gradient-cta-hover: linear-gradient(135deg, #5eeaff 0%, #32E0FF 100%);
    --success: #2ecc71;
    --error: #e74c3c;
    --warning: #f39c12;
}

body {
    font-family: 'Inter', 'Segoe UI', sans-serif;
    line-height: 1.6;
    color: var(--text-light);
    background: var(--bg-deep);
    min-height: 100vh;
}

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

/* =============================== HEADER =============================== */
.header {
    background: rgba(10, 15, 26, 0.9);
    backdrop-filter: blur(24px);
    border-bottom: 1px solid var(--border-subtle);
    padding: 16px 0;
    position: sticky;
    top: 0;
    z-index: 100;
}
.header .container {
    max-width: 1200px; margin: 0 auto; padding: 0 24px;
    display: flex; align-items: center; justify-content: space-between;
}
.logo { font-size: 1.5rem; font-weight: 700; color: var(--text-white); }
.logo span { color: var(--accent); }
.header nav a {
    color: var(--text-muted); margin-left: 24px; font-size: 0.9rem; transition: color 0.2s;
}
.header nav a:hover { color: var(--accent); }

/* =============================== HERO =============================== */
.hero {
    text-align: center; padding: 80px 24px 40px;
    max-width: 800px; margin: 0 auto;
}
.hero h1 { font-size: 2.5rem; color: var(--text-white); margin-bottom: 16px; }
.hero h1 span { color: var(--accent); }
.hero p { font-size: 1.1rem; color: var(--text-muted); max-width: 600px; margin: 0 auto; }

/* =============================== SECTIONS =============================== */
.section {
    max-width: 1200px; margin: 0 auto; padding: 40px 24px;
}
.section-title {
    font-size: 1.6rem; color: var(--text-white); margin-bottom: 8px;
    display: flex; align-items: center; gap: 12px;
}
.section-title .icon { font-size: 1.4rem; }
.section-subtitle { color: var(--text-muted); margin-bottom: 32px; font-size: 0.95rem; }

/* =============================== CARDS =============================== */
.cards-grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 24px;
}
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-card);
    border-radius: 12px; padding: 28px;
    transition: all 0.3s ease;
}
.card:hover {
    border-color: var(--border-accent);
    box-shadow: var(--shadow-cyan);
    transform: translateY(-2px);
}
.card-title {
    font-size: 1.2rem; color: var(--text-white); margin-bottom: 12px; font-weight: 600;
}
.card-description {
    color: var(--text-muted); font-size: 0.9rem; margin-bottom: 16px;
    display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden;
}
.card-meta {
    display: flex; flex-wrap: wrap; gap: 16px; margin-bottom: 20px; font-size: 0.85rem;
}
.card-meta-item {
    display: flex; align-items: center; gap: 6px; color: var(--text-muted);
}
.card-meta-item .icon { color: var(--accent); }
.card-spots {
    font-size: 0.8rem; padding: 4px 10px; border-radius: 20px;
    background: var(--accent-glow); color: var(--accent); display: inline-block;
}
.card-spots.full { background: rgba(231, 76, 60, 0.15); color: var(--error); }

/* =============================== BUTTONS =============================== */
.btn {
    display: inline-block; padding: 10px 24px; border-radius: 8px;
    font-weight: 600; font-size: 0.9rem; border: none; cursor: pointer;
    transition: all 0.3s ease; text-align: center;
}
.btn-primary {
    background: var(--gradient-cta); color: var(--bg-deep);
}
.btn-primary:hover {
    background: var(--gradient-cta-hover); box-shadow: var(--shadow-cyan);
    transform: translateY(-1px);
}
.btn-primary:disabled {
    opacity: 0.5; cursor: not-allowed; transform: none;
}
.btn-outline {
    background: transparent; border: 1px solid var(--border-accent); color: var(--accent);
}
.btn-outline:hover {
    background: var(--accent-glow); border-color: var(--accent);
}
.btn-sm { padding: 6px 14px; font-size: 0.8rem; }
.btn-danger { background: var(--error); color: white; }
.btn-danger:hover { opacity: 0.85; }

/* =============================== MODAL =============================== */
.modal-overlay {
    display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.7);
    backdrop-filter: blur(4px); z-index: 200;
    align-items: flex-start; justify-content: center;
    overflow-y: auto; padding: 40px 0;
}
.modal-overlay.active { display: flex; }
.modal {
    background: var(--bg-card); border: 1px solid var(--border-accent);
    border-radius: 16px; padding: 36px; max-width: 500px; width: 90%;
    box-shadow: var(--shadow-cyan); margin: auto 0; flex-shrink: 0;
}
.modal h2 {
    color: var(--text-white); margin-bottom: 8px; font-size: 1.3rem;
}
.modal .modal-subtitle { color: var(--text-muted); margin-bottom: 24px; font-size: 0.9rem; }
.modal-close {
    float: right; background: none; border: none; color: var(--text-muted);
    font-size: 1.5rem; cursor: pointer; line-height: 1;
}
.modal-close:hover { color: var(--text-white); }

/* =============================== FORMS =============================== */
.form-group { margin-bottom: 18px; }
.form-group label {
    display: block; color: var(--text-light); font-size: 0.85rem;
    margin-bottom: 6px; font-weight: 500;
}
.form-group input,
.form-group select,
.form-group textarea {
    width: 100%; padding: 10px 14px; border-radius: 8px;
    background: var(--bg-surface); border: 1px solid var(--border-card);
    color: var(--text-white); font-size: 0.9rem;
    transition: border-color 0.2s;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none; border-color: var(--accent);
}
.form-group select option { background: var(--bg-dark); color: var(--text-white); }

/* =============================== ALERTS =============================== */
.alert {
    padding: 14px 18px; border-radius: 8px; margin-bottom: 16px;
    font-size: 0.9rem; display: none;
}
.alert.show { display: block; }
.alert-success { background: rgba(46,204,113,0.12); border: 1px solid rgba(46,204,113,0.3); color: var(--success); }
.alert-error { background: rgba(231,76,60,0.12); border: 1px solid rgba(231,76,60,0.3); color: var(--error); }

/* =============================== EMPTY STATE =============================== */
.empty-state {
    text-align: center; padding: 60px 24px; color: var(--text-muted);
}
.empty-state .icon { font-size: 3rem; margin-bottom: 16px; }
.empty-state p { font-size: 1rem; }

/* =============================== FOOTER =============================== */
.footer {
    text-align: center; padding: 40px 24px; border-top: 1px solid var(--border-subtle);
    color: var(--text-muted); font-size: 0.85rem; margin-top: 60px;
}

/* =============================== ADMIN =============================== */
.admin-login { max-width: 400px; margin: 80px auto; padding: 0 24px; }
.admin-header {
    display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px;
}
.tabs {
    display: flex; gap: 0; margin-bottom: 32px; border-bottom: 1px solid var(--border-card);
}
.tab {
    padding: 12px 24px; cursor: pointer; color: var(--text-muted);
    border-bottom: 2px solid transparent; transition: all 0.2s; background: none;
    border-top: none; border-left: none; border-right: none; font-size: 0.95rem;
}
.tab.active { color: var(--accent); border-bottom-color: var(--accent); }
.tab:hover { color: var(--text-light); }

.table-container { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th { text-align: left; color: var(--text-muted); font-size: 0.8rem; text-transform: uppercase;
     padding: 10px 14px; border-bottom: 1px solid var(--border-card); }
td { padding: 12px 14px; border-bottom: 1px solid var(--border-subtle); font-size: 0.9rem; color: var(--text-light); }
tr:hover td { background: var(--bg-card-hover); }
.badge {
    padding: 3px 10px; border-radius: 12px; font-size: 0.75rem; font-weight: 600;
}
.badge-active { background: rgba(46,204,113,0.15); color: var(--success); }
.badge-cancelled { background: rgba(231,76,60,0.15); color: var(--error); }
.badge-completed { background: rgba(243,156,18,0.15); color: var(--warning); }
.actions { display: flex; gap: 8px; }

/* =============================== RESPONSIVE =============================== */
@media (max-width: 768px) {
    .hero h1 { font-size: 1.8rem; }
    .cards-grid { grid-template-columns: 1fr; }
    .header .container { flex-direction: column; gap: 12px; }
    .card-meta { flex-direction: column; gap: 8px; }
    .tabs { overflow-x: auto; }
}