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

:root {
    --navy: #1E3C6E;
    --navy-light: #2A5298;
    --gold: #D4A843;
    --bg: #F5F5F0;
    --card: #FFFFFF;
    --text: #1A1A1A;
    --text-muted: #6B6B6B;
    --border: #E0E0E0;
    --success: #2D8544;
    --warning: #B8860B;
    --danger: #C0392B;
    --radius: 8px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
}

/* ---- NAV ---- */
.navbar {
    background: var(--navy);
    color: white;
    padding: 16px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}
.navbar h1 { font-size: 20px; font-weight: 700; letter-spacing: 1px; }
.navbar h1 span { color: var(--gold); }
.navbar .user-info { font-size: 13px; opacity: 0.8; }
.navbar button {
    background: rgba(255,255,255,0.15);
    color: white;
    border: 1px solid rgba(255,255,255,0.3);
    padding: 6px 14px;
    border-radius: var(--radius);
    cursor: pointer;
    font-size: 13px;
}
.navbar button:hover { background: rgba(255,255,255,0.25); }

/* ---- TABS ---- */
.tabs {
    display: flex;
    gap: 0;
    background: white;
    border-bottom: 2px solid var(--border);
    padding: 0 24px;
}
.tab {
    padding: 14px 24px;
    cursor: pointer;
    font-weight: 600;
    font-size: 14px;
    color: var(--text-muted);
    border-bottom: 3px solid transparent;
    transition: all 0.2s;
    user-select: none;
}
.tab:hover { color: var(--navy); }
.tab.active { color: var(--navy); border-bottom-color: var(--gold); }

/* ---- LAYOUT ---- */
.container { max-width: 1100px; margin: 0 auto; padding: 24px; }
.page { display: none; }
.page.active { display: block; }

/* ---- CARDS ---- */
.card {
    background: var(--card);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    padding: 20px;
    margin-bottom: 16px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.04);
}
.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}
.card-header h2 { font-size: 18px; color: var(--navy); }

/* ---- STATS ROW ---- */
.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}
.stat-card {
    background: var(--card);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    padding: 20px;
    text-align: center;
}
.stat-card .number { font-size: 32px; font-weight: 700; color: var(--navy); }
.stat-card .label { font-size: 13px; color: var(--text-muted); margin-top: 4px; }

/* ---- TABLE ---- */
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th {
    text-align: left;
    padding: 10px 12px;
    background: var(--navy);
    color: white;
    font-weight: 600;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
td { padding: 10px 12px; border-bottom: 1px solid var(--border); }
tr:hover td { background: #F8F9FA; }

/* ---- BADGES ---- */
.badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
}
.badge-easy { background: #E8F5E9; color: var(--success); }
.badge-medium { background: #FFF8E1; color: var(--warning); }
.badge-hard { background: #FFEBEE; color: var(--danger); }
.badge-draft { background: #E3F2FD; color: #1565C0; }
.badge-published { background: #E8F5E9; color: var(--success); }
.badge-live { background: #FFF8E1; color: var(--warning); }
.badge-completed { background: #F3E5F5; color: #7B1FA2; }
.badge-cancelled { background: #FFEBEE; color: var(--danger); }

/* ---- BUTTONS ---- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: var(--radius);
    font-size: 13px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all 0.15s;
}
.btn-primary { background: var(--navy); color: white; }
.btn-primary:hover { background: var(--navy-light); }
.btn-gold { background: var(--gold); color: white; }
.btn-gold:hover { background: #C49A3A; }
.btn-danger { background: var(--danger); color: white; }
.btn-danger:hover { background: #A93226; }
.btn-sm { padding: 4px 10px; font-size: 12px; }
.btn-outline {
    background: transparent;
    color: var(--navy);
    border: 1px solid var(--navy);
}
.btn-outline:hover { background: var(--navy); color: white; }
.actions { display: flex; gap: 6px; }

/* ---- FORMS ---- */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.5);
    z-index: 200;
    justify-content: center;
    align-items: center;
    padding: 20px;
}
.modal-overlay.active { display: flex; }
.modal {
    background: white;
    border-radius: var(--radius);
    padding: 28px;
    width: 100%;
    max-width: 560px;
    max-height: 85vh;
    overflow-y: auto;
    box-shadow: 0 8px 30px rgba(0,0,0,0.2);
}
.modal h3 { color: var(--navy); margin-bottom: 20px; font-size: 18px; }
.form-group { margin-bottom: 16px; }
.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 4px;
}
.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 14px;
    font-family: inherit;
    transition: border-color 0.15s;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--navy);
    box-shadow: 0 0 0 3px rgba(30,60,110,0.1);
}
.form-group textarea { resize: vertical; min-height: 80px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.form-actions { display: flex; gap: 10px; justify-content: flex-end; margin-top: 20px; }

/* ---- LOGIN ---- */
.login-wrap {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: var(--navy);
}
.login-card {
    background: white;
    padding: 40px;
    border-radius: 12px;
    width: 100%;
    max-width: 400px;
    box-shadow: 0 8px 30px rgba(0,0,0,0.3);
}
.login-card h2 { color: var(--navy); text-align: center; margin-bottom: 8px; }
.login-card p { text-align: center; color: var(--text-muted); margin-bottom: 24px; font-size: 14px; }
.login-card .btn { width: 100%; justify-content: center; padding: 12px; font-size: 15px; }
.error-msg { color: var(--danger); font-size: 13px; text-align: center; margin-bottom: 12px; }

/* ---- TOAST ---- */
.toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background: var(--navy);
    color: white;
    padding: 12px 20px;
    border-radius: var(--radius);
    font-size: 14px;
    z-index: 300;
    transform: translateY(100px);
    opacity: 0;
    transition: all 0.3s;
}
.toast.show { transform: translateY(0); opacity: 1; }
.toast.error { background: var(--danger); }
.toast.success { background: var(--success); }

/* ---- RESPONSIVE ---- */
@media (max-width: 768px) {
    .tabs { padding: 0 12px; overflow-x: auto; }
    .tab { padding: 12px 16px; white-space: nowrap; }
    .container { padding: 16px; }
    .form-row { grid-template-columns: 1fr; }
    .stats { grid-template-columns: 1fr 1fr; }
}