/* ============================================
   ADMIN DASHBOARD v2.0 - DOMUS-IA España
   Dark premium theme, data-dense, professional
   ============================================ */

:root {
    --bg-dark: #0a0f1e;
    --bg-darker: #060a16;
    --bg-card: #111827;
    --bg-card-hover: #1a2332;
    --bg-input: #1f2937;
    --border: #1f2937;
    --border-light: #374151;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --accent-blue: #3b82f6;
    --accent-green: #10b981;
    --accent-yellow: #f59e0b;
    --accent-red: #ef4444;
    --accent-purple: #8b5cf6;
    --accent-cyan: #06b6d4;
    --accent-orange: #f97316;
    --accent-pink: #ec4899;
    --shadow: 0 4px 24px rgba(0,0,0,0.4);
    --shadow-lg: 0 8px 40px rgba(0,0,0,0.5);
    --radius: 12px;
    --radius-lg: 16px;
}

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

body {
    font-family: 'Inter', -apple-system, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

/* ============ SCROLLBAR ============ */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-darker); }
::-webkit-scrollbar-thumb { background: var(--border-light); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent-blue); }

/* ============ HEADER ============ */
.admin-header {
    background: linear-gradient(180deg, rgba(17,24,39,0.98) 0%, rgba(10,15,30,0.95) 100%);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(12px);
}

.admin-header-inner {
    max-width: 1480px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 56px;
    gap: 16px;
}

.admin-brand {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 700;
    font-size: 0.95rem;
    white-space: nowrap;
    flex-shrink: 0;
}

.admin-logo {
    width: 28px;
    height: 28px;
    border-radius: 6px;
    object-fit: contain;
}

.admin-badge {
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    color: white;
    padding: 2px 8px;
    border-radius: 6px;
    font-size: 0.6rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.admin-nav {
    display: flex;
    gap: 2px;
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
    flex: 1;
    min-width: 0;
}
.admin-nav::-webkit-scrollbar { height: 3px; }
.admin-nav::-webkit-scrollbar-track { background: transparent; }
.admin-nav::-webkit-scrollbar-thumb { background: var(--border-light); border-radius: 4px; }

.nav-tab {
    background: transparent;
    border: none;
    color: var(--text-muted);
    padding: 8px 10px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.78rem;
    font-weight: 500;
    transition: all 0.2s;
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 5px;
    font-family: inherit;
    flex-shrink: 0;
}

.nav-tab:hover { background: var(--bg-card); color: var(--text-primary); }
.nav-tab.active { background: var(--accent-blue); color: white; box-shadow: 0 2px 8px rgba(59,130,246,0.3); }
a.nav-tab, a.nav-tab:visited, a.nav-tab:link { color: var(--text-muted); text-decoration: none; }
a.nav-tab:hover { color: var(--text-primary); text-decoration: none; }
.nav-tab i { font-size: 0.75rem; }

.admin-actions {
    display: flex;
    gap: 6px;
    flex-shrink: 0;
    align-items: center;
}

.btn-action {
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    width: 34px;
    height: 34px;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    font-size: 0.8rem;
}
.btn-action:hover { color: var(--accent-blue); border-color: var(--accent-blue); background: rgba(59,130,246,0.1); }
.btn-action.spinning i { animation: spin 0.8s linear infinite; }

.btn-back {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.8rem;
    padding: 6px 12px;
    border-radius: 8px;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 6px;
    border: 1px solid var(--border);
}
.btn-back:hover { color: var(--text-primary); background: var(--bg-card); border-color: var(--border-light); }

@keyframes spin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }

/* ============ LOADING ============ */
.loading-overlay {
    position: fixed;
    inset: 0;
    background: var(--bg-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 200;
}

.loading-spinner {
    text-align: center;
    color: var(--text-secondary);
}

.spinner-ring {
    width: 48px;
    height: 48px;
    border: 3px solid var(--border);
    border-top-color: var(--accent-blue);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 0 auto 16px;
}
.spinner-ring.small { width: 32px; height: 32px; border-width: 2px; }

/* ============ ACCESS DENIED ============ */
.access-denied {
    text-align: center;
    padding: 80px 20px;
}
.access-denied i { font-size: 4rem; color: var(--accent-red); margin-bottom: 16px; }
.access-denied h2 { margin-bottom: 8px; }
.access-denied p { color: var(--text-secondary); margin-bottom: 24px; }

.btn-primary {
    background: linear-gradient(135deg, var(--accent-blue), #2563eb);
    color: white;
    padding: 10px 24px;
    border-radius: 10px;
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    border: none;
    cursor: pointer;
    font-family: inherit;
    font-size: 0.9rem;
    transition: all 0.2s;
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 4px 16px rgba(59,130,246,0.3); }
.btn-primary.full-width { width: 100%; justify-content: center; }

/* ============ MAIN CONTENT ============ */
.admin-main {
    max-width: 1480px;
    margin: 0 auto;
    padding: 20px;
}

.tab-content { display: none; animation: fadeIn 0.3s ease; }
.tab-content.active { display: block; }

@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

/* ============ REVENUE HIGHLIGHT BAR ============ */
.revenue-highlight {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    margin-bottom: 20px;
    background: linear-gradient(135deg, rgba(16,185,129,0.08) 0%, rgba(59,130,246,0.08) 50%, rgba(139,92,246,0.08) 100%);
    border: 1px solid rgba(16,185,129,0.15);
    border-radius: var(--radius-lg);
    padding: 16px 20px;
}

.rev-item {
    display: flex;
    align-items: center;
    gap: 12px;
}

.rev-item > i {
    font-size: 1.2rem;
    color: var(--accent-green);
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(16,185,129,0.12);
    border-radius: 10px;
    flex-shrink: 0;
}

.rev-value {
    font-size: 1.2rem;
    font-weight: 800;
    display: block;
    line-height: 1.2;
}

.rev-label {
    font-size: 0.7rem;
    color: var(--text-muted);
    display: block;
}

/* ============ KPI CARDS ============ */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 12px;
    margin-bottom: 16px;
}

.kpi-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 18px;
    display: flex;
    align-items: center;
    gap: 14px;
    border: 1px solid var(--border);
    transition: all 0.25s;
}

.kpi-card:hover {
    border-color: rgba(59,130,246,0.3);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.kpi-icon {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.kpi-primary .kpi-icon { background: rgba(59,130,246,0.12); color: var(--accent-blue); }
.kpi-success .kpi-icon { background: rgba(16,185,129,0.12); color: var(--accent-green); }
.kpi-info .kpi-icon { background: rgba(6,182,212,0.12); color: var(--accent-cyan); }
.kpi-warning .kpi-icon { background: rgba(245,158,11,0.12); color: var(--accent-yellow); }
.kpi-revenue .kpi-icon { background: rgba(16,185,129,0.12); color: var(--accent-green); }

.kpi-card:not(.kpi-primary):not(.kpi-success):not(.kpi-info):not(.kpi-warning):not(.kpi-revenue):not(.kpi-compact) .kpi-icon {
    background: rgba(100,116,139,0.1);
    color: var(--text-muted);
}

.kpi-data { display: flex; flex-direction: column; min-width: 0; }
.kpi-value { font-size: 1.6rem; font-weight: 800; line-height: 1.1; }
.kpi-label { font-size: 0.72rem; color: var(--text-secondary); margin-top: 2px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* Small KPI */
.kpi-small { grid-template-columns: repeat(auto-fit, minmax(130px, 1fr)); }

.kpi-compact {
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 14px 10px;
    gap: 4px;
}

.kpi-compact i { font-size: 1.2rem; color: var(--accent-blue); }
.kpi-compact .kpi-value { font-size: 1.3rem; }
.kpi-compact .kpi-label { font-size: 0.65rem; }

/* ============ PANELS ============ */
.panel {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    margin-bottom: 16px;
    overflow: hidden;
}

.panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 20px;
    border-bottom: 1px solid var(--border);
}

.panel-header h3 {
    font-size: 0.9rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}
.panel-header h3 i { color: var(--accent-blue); font-size: 0.85rem; }

.panel-badge {
    background: var(--accent-blue);
    color: white;
    padding: 2px 10px;
    border-radius: 20px;
    font-size: 0.72rem;
    font-weight: 700;
}

/* ============ TABLES ============ */
.table-wrapper { overflow-x: auto; }

.admin-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.8rem;
}

.admin-table th {
    text-align: left;
    padding: 10px 12px;
    color: var(--text-muted);
    font-weight: 600;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    cursor: pointer;
    white-space: nowrap;
    border-bottom: 1px solid var(--border);
    user-select: none;
}
.admin-table th:hover { color: var(--accent-blue); }
.admin-table th i { font-size: 0.55rem; margin-left: 3px; opacity: 0.5; }

.admin-table td {
    padding: 9px 12px;
    border-bottom: 1px solid rgba(31,41,55,0.5);
    white-space: nowrap;
}

.admin-table tr:hover td { background: var(--bg-card-hover); }

.plan-tag {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 20px;
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.plan-free { background: rgba(100,116,139,0.15); color: var(--text-muted); }
.plan-particular { background: rgba(139,92,246,0.12); color: var(--accent-purple); }
.plan-profesional { background: rgba(59,130,246,0.12); color: var(--accent-blue); }
.plan-premium { background: rgba(245,158,11,0.12); color: var(--accent-yellow); }

.type-tag { font-size: 0.7rem; color: var(--text-secondary); }

.status-tag {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 20px;
    font-size: 0.65rem;
    font-weight: 600;
}
.status-succeeded, .status-active { background: rgba(16,185,129,0.12); color: var(--accent-green); }
.status-failed, .status-canceled { background: rgba(239,68,68,0.12); color: var(--accent-red); }
.status-past_due { background: rgba(245,158,11,0.12); color: var(--accent-yellow); }

.btn-detail {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-muted);
    padding: 4px 8px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.7rem;
    transition: all 0.2s;
}
.btn-detail:hover { border-color: var(--accent-blue); color: var(--accent-blue); background: rgba(59,130,246,0.05); }

/* ============ PLAN BARS ============ */
.plan-bars { padding: 20px; }

.plan-bar-row {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 10px;
}

.plan-bar-label { width: 90px; font-size: 0.78rem; font-weight: 600; text-align: right; flex-shrink: 0; }

.plan-bar-track {
    flex: 1;
    height: 28px;
    background: rgba(31,41,55,0.5);
    border-radius: 8px;
    overflow: hidden;
    position: relative;
}

.plan-bar-fill {
    height: 100%;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding-right: 10px;
    font-size: 0.72rem;
    font-weight: 700;
    color: white;
    min-width: 40px;
    transition: width 0.6s ease;
}

.plan-bar-fill.bar-free { background: linear-gradient(90deg, #374151, #4b5563); }
.plan-bar-fill.bar-particular { background: linear-gradient(90deg, #7c3aed, #a78bfa); }
.plan-bar-fill.bar-profesional { background: linear-gradient(90deg, #2563eb, #60a5fa); }
.plan-bar-fill.bar-premium { background: linear-gradient(90deg, #d97706, #fbbf24); }

/* ============ FILTERS ============ */
.filters-bar {
    display: flex;
    gap: 10px;
    margin-bottom: 16px;
    flex-wrap: wrap;
    align-items: center;
}

.filter-group {
    display: flex;
    align-items: center;
    gap: 6px;
}

.filter-group label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.filter-group select, .filter-group input {
    background: var(--bg-input);
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 7px 12px;
    border-radius: 8px;
    font-size: 0.82rem;
    font-family: inherit;
    transition: border-color 0.2s;
}
.filter-group select:focus, .filter-group input:focus { border-color: var(--accent-blue); outline: none; }

.search-group {
    flex: 1;
    min-width: 200px;
    position: relative;
}

.search-group i {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 0.75rem;
}
.search-group input { width: 100%; padding-left: 34px; }

/* ============ USAGE ============ */
.usage-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 14px;
    padding: 20px;
}

.usage-plan-card {
    background: rgba(10,15,30,0.6);
    border-radius: var(--radius);
    padding: 18px;
    border: 1px solid var(--border);
}

.usage-plan-card h4 {
    font-size: 0.85rem;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.usage-stat {
    display: flex;
    justify-content: space-between;
    padding: 5px 0;
    font-size: 0.78rem;
    border-bottom: 1px solid rgba(31,41,55,0.3);
}
.usage-stat-label { color: var(--text-secondary); }
.usage-stat-value { font-weight: 600; }

/* ============ CHART ============ */
.chart-container {
    padding: 20px;
    min-height: 180px;
}

.chart-bar-row {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 5px;
}
.chart-bar-date { width: 60px; font-size: 0.68rem; color: var(--text-muted); text-align: right; flex-shrink: 0; }
.chart-bar-track { flex: 1; height: 22px; background: rgba(31,41,55,0.3); border-radius: 4px; overflow: hidden; }
.chart-bar-fill { height: 100%; border-radius: 4px; transition: width 0.4s ease; }
.chart-bar-fill.bar-revenue { background: linear-gradient(90deg, var(--accent-green), var(--accent-cyan)); }
.chart-bar-fill.bar-reg { background: linear-gradient(90deg, var(--accent-blue), var(--accent-purple)); }
.chart-bar-count { width: 50px; font-size: 0.72rem; font-weight: 600; }

/* ============ TOP USERS ============ */
.top-users-list { padding: 20px; }

.top-user-row {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 0;
    border-bottom: 1px solid rgba(31,41,55,0.3);
}

.top-user-rank {
    width: 26px;
    height: 26px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    font-weight: 800;
    background: var(--bg-input);
    flex-shrink: 0;
}
.top-user-rank.rank-1 { background: linear-gradient(135deg, #d97706, #fbbf24); color: #1e293b; }
.top-user-rank.rank-2 { background: linear-gradient(135deg, #64748b, #94a3b8); color: #1e293b; }
.top-user-rank.rank-3 { background: linear-gradient(135deg, #b45309, #d97706); color: #1e293b; }

.top-user-info { flex: 1; min-width: 0; }
.top-user-name { font-size: 0.8rem; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.top-user-info .plan-tag { margin-left: 6px; }
.top-user-stats { font-size: 0.7rem; color: var(--text-muted); }
.top-user-bar { width: 100px; height: 6px; background: rgba(31,41,55,0.5); border-radius: 3px; overflow: hidden; flex-shrink: 0; }
.top-user-bar-fill { height: 100%; background: var(--accent-blue); border-radius: 3px; }

/* ============ ACTIVITY FEED ============ */
.activity-feed { padding: 10px 20px; max-height: 600px; overflow-y: auto; }

.activity-item {
    display: flex;
    gap: 10px;
    padding: 8px 0;
    border-bottom: 1px solid rgba(31,41,55,0.3);
    align-items: flex-start;
}

.activity-avatar {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.65rem;
    font-weight: 700;
    flex-shrink: 0;
}
.activity-avatar.user-msg { background: rgba(59,130,246,0.12); color: var(--accent-blue); }
.activity-avatar.sofia-msg { background: rgba(16,185,129,0.12); color: var(--accent-green); }

.activity-content { flex: 1; min-width: 0; }
.activity-meta { font-size: 0.68rem; color: var(--text-muted); margin-bottom: 2px; display: flex; gap: 6px; align-items: center; }
.activity-text { font-size: 0.78rem; color: var(--text-secondary); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.activity-time { font-size: 0.62rem; color: var(--text-muted); flex-shrink: 0; white-space: nowrap; }

/* ============ MODAL ============ */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.75);
    backdrop-filter: blur(6px);
    z-index: 300;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal-panel {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    width: 100%;
    max-width: 880px;
    max-height: 88vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    animation: modalIn 0.3s ease;
}
.modal-panel.modal-small { max-width: 420px; }

@keyframes modalIn { from { opacity: 0; transform: scale(0.95) translateY(10px); } to { opacity: 1; transform: scale(1) translateY(0); } }

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 24px;
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    background: var(--bg-card);
    z-index: 1;
}
.modal-header h3 { font-size: 0.95rem; display: flex; align-items: center; gap: 8px; }
.modal-header h3 i { color: var(--accent-blue); }

.modal-actions { display: flex; gap: 8px; align-items: center; }

.btn-modal-action {
    background: rgba(59,130,246,0.1);
    border: 1px solid rgba(59,130,246,0.2);
    color: var(--accent-blue);
    padding: 5px 12px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.75rem;
    font-weight: 600;
    font-family: inherit;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 5px;
}
.btn-modal-action:hover { background: rgba(59,130,246,0.2); }

.modal-close {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 1rem;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 6px;
    transition: all 0.2s;
}
.modal-close:hover { color: var(--text-primary); background: rgba(255,255,255,0.05); }

.modal-body { padding: 20px 24px; }

/* Detail grid */
.detail-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 10px;
    margin-bottom: 16px;
}

.detail-item {
    background: rgba(10,15,30,0.5);
    border-radius: 10px;
    padding: 10px 14px;
    border: 1px solid var(--border);
}
.detail-item label { font-size: 0.65rem; color: var(--text-muted); display: block; margin-bottom: 2px; text-transform: uppercase; letter-spacing: 0.3px; }
.detail-item .value { font-size: 0.9rem; font-weight: 600; }

.detail-section { margin-bottom: 16px; }
.detail-section h4 { font-size: 0.82rem; color: var(--text-secondary); margin-bottom: 8px; border-bottom: 1px solid var(--border); padding-bottom: 6px; display: flex; align-items: center; gap: 6px; }
.detail-section h4 i { color: var(--accent-blue); font-size: 0.8rem; }

.detail-list { list-style: none; }
.detail-list li { font-size: 0.78rem; padding: 5px 0; border-bottom: 1px solid rgba(31,41,55,0.2); color: var(--text-secondary); }

/* Engagement Bar */
.engagement-bar {
    width: 100%;
    height: 10px;
    background: rgba(31,41,55,0.5);
    border-radius: 5px;
    overflow: hidden;
    margin-top: 6px;
}
.engagement-fill {
    height: 100%;
    border-radius: 5px;
    transition: width 0.5s ease;
}
.engagement-fill.low { background: linear-gradient(90deg, var(--accent-red), var(--accent-orange)); }
.engagement-fill.medium { background: linear-gradient(90deg, var(--accent-yellow), var(--accent-orange)); }
.engagement-fill.high { background: linear-gradient(90deg, var(--accent-green), var(--accent-cyan)); }

/* Advice box */
.advice-box {
    background: rgba(59,130,246,0.06);
    border: 1px solid rgba(59,130,246,0.15);
    border-radius: var(--radius);
    padding: 16px;
    margin-top: 12px;
}
.advice-box h4 { color: var(--accent-blue); font-size: 0.82rem; margin-bottom: 8px; display: flex; align-items: center; gap: 6px; }
.advice-box ul { list-style: none; padding-left: 0; }
.advice-box li { font-size: 0.78rem; color: var(--text-secondary); margin-bottom: 5px; padding-left: 18px; position: relative; }
.advice-box li::before { content: '→'; position: absolute; left: 0; color: var(--accent-blue); font-weight: 700; }

.advice-box.warning {
    background: rgba(245,158,11,0.06);
    border-color: rgba(245,158,11,0.15);
}
.advice-box.warning h4 { color: var(--accent-yellow); }
.advice-box.warning li::before { color: var(--accent-yellow); }

.advice-box.danger {
    background: rgba(239,68,68,0.06);
    border-color: rgba(239,68,68,0.15);
}
.advice-box.danger h4 { color: var(--accent-red); }
.advice-box.danger li::before { color: var(--accent-red); }

/* ============ FORM ELEMENTS ============ */
.form-group { margin-bottom: 12px; }
.form-group label { display: block; font-size: 0.78rem; color: var(--text-secondary); margin-bottom: 4px; font-weight: 500; }
.form-input {
    width: 100%;
    background: var(--bg-input);
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 9px 14px;
    border-radius: 8px;
    font-size: 0.85rem;
    font-family: inherit;
    transition: border-color 0.2s;
}
.form-input:focus { border-color: var(--accent-blue); outline: none; }

/* ============ TOAST ============ */
.admin-toast {
    position: fixed;
    top: 66px;
    right: 20px;
    z-index: 400;
    max-width: 320px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.toast-msg {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 10px 16px;
    font-size: 0.78rem;
    box-shadow: var(--shadow);
    animation: toastIn 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
}
.toast-msg i { flex-shrink: 0; }
.toast-msg.success { border-left: 3px solid var(--accent-green); }
.toast-msg.success i { color: var(--accent-green); }
.toast-msg.error { border-left: 3px solid var(--accent-red); }
.toast-msg.error i { color: var(--accent-red); }
.toast-msg.info { border-left: 3px solid var(--accent-blue); }
.toast-msg.info i { color: var(--accent-blue); }

@keyframes toastIn {
    from { transform: translateX(120%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

/* ============ LAST UPDATED ============ */
.last-updated {
    position: fixed;
    bottom: 12px;
    right: 16px;
    font-size: 0.65rem;
    color: var(--text-muted);
    background: var(--bg-card);
    padding: 4px 10px;
    border-radius: 20px;
    border: 1px solid var(--border);
    z-index: 50;
}

/* ============ BTN SMALL ============ */
.btn-small {
    background: var(--bg-input);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    padding: 5px 12px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.72rem;
    font-family: inherit;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 5px;
}
.btn-small:hover { color: var(--accent-blue); border-color: var(--accent-blue); }

/* Empty state */
.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-muted);
}
.empty-state i { font-size: 2rem; margin-bottom: 10px; display: block; opacity: 0.4; }
.empty-state p { font-size: 0.85rem; }

/* ============ RESPONSIVE ============ */
@media (max-width: 768px) {
    .admin-header-inner { flex-wrap: wrap; height: auto; padding: 10px 14px; gap: 8px; }
    .admin-nav { order: 3; width: 100%; overflow-x: auto; padding-bottom: 4px; }
    .nav-tab { padding: 6px 10px; font-size: 0.75rem; }
    .tab-label { display: none; }
    .kpi-grid { grid-template-columns: repeat(2, 1fr); gap: 8px; }
    .kpi-value { font-size: 1.2rem; }
    .kpi-card { padding: 12px; gap: 10px; }
    .kpi-icon { width: 36px; height: 36px; font-size: 0.9rem; }
    .filters-bar { flex-direction: column; gap: 8px; }
    .admin-main { padding: 10px; }
    .usage-grid { grid-template-columns: 1fr; }
    .revenue-highlight { grid-template-columns: repeat(2, 1fr); gap: 8px; padding: 12px; }
    .rev-value { font-size: 1rem; }
    .detail-grid { grid-template-columns: repeat(2, 1fr); }
    .modal-panel { max-height: 92vh; }
    .admin-brand span:not(.admin-badge) { display: none; }
    .btn-back span { display: none; }
}

@media (max-width: 480px) {
    .kpi-grid { grid-template-columns: 1fr 1fr; }
    .kpi-small { grid-template-columns: repeat(3, 1fr); }
    .revenue-highlight { grid-template-columns: 1fr 1fr; }
    .detail-grid { grid-template-columns: 1fr; }
}