/* ==========================================================================
   Acoustic Guard - Modern UI
   ========================================================================== */

:root {
    --bg: #f0f2f5;
    --card: #ffffff;
    --border: #e4e6eb;
    --text: #1c1e21;
    --text-secondary: #65676b;
    --primary: #1a73e8;
    --primary-hover: #1557b0;
    --success: #0d9f6e;
    --danger: #dc2626;
    --warning: #d97706;
    --info: #0891b2;
    --radius: 10px;
    --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
    --shadow-lg: 0 4px 12px rgba(0,0,0,0.1);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    font-size: 14px;
}

.container { max-width: 1200px; margin: 0 auto; padding: 16px; overflow-x: hidden; }

/* ==========================================================================
   Header & Nav
   ========================================================================== */

header {
    background: var(--card);
    padding: 16px 20px;
    border-radius: var(--radius);
    margin-bottom: 16px;
    box-shadow: var(--shadow);
}

header h1 { font-size: 20px; font-weight: 700; margin-bottom: 8px; }

nav { display: flex; gap: 4px; flex-wrap: wrap; align-items: center; }
.nav-toggle { display: none; background: none; border: 1px solid var(--border); border-radius: 6px; padding: 6px 12px; font-size: 20px; cursor: pointer; line-height: 1; }

nav a {
    padding: 7px 14px;
    background: transparent;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 500;
    transition: all 0.15s;
}

nav a:hover { background: var(--bg); color: var(--text); }
nav a.active { background: var(--primary); color: white; }

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 7px 14px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
    transition: all 0.15s;
    white-space: nowrap;
}

.btn:hover { filter: brightness(0.92); }
.btn:active { transform: scale(0.97); }
.btn-sm { padding: 5px 10px; font-size: 12px; }
.btn-primary { background: var(--primary); color: white; }
.btn-success { background: var(--success); color: white; }
.btn-danger { background: var(--danger); color: white; }
.btn-warning { background: var(--warning); color: white; }
.btn-secondary { background: #e4e6eb; color: var(--text); }

/* ==========================================================================
   Cards
   ========================================================================== */

.card {
    background: var(--card);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
}

/* ==========================================================================
   Badges
   ========================================================================== */

.badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 11px;
    font-weight: 600;
}

.badge-success { background: #d1fae5; color: #065f46; }
.badge-warning { background: #fef3c7; color: #92400e; }
.badge-danger { background: #fee2e2; color: #991b1b; }
.badge-info { background: #dbeafe; color: #1e40af; }

/* ==========================================================================
   Events Page
   ========================================================================== */

.stats { display: flex; gap: 16px; color: var(--text-secondary); font-size: 13px; }
.stats strong { color: var(--text); }

.tabs { display: flex; gap: 2px; margin-bottom: 0; background: var(--card); border-radius: var(--radius) var(--radius) 0 0; padding: 4px 4px 0; box-shadow: var(--shadow); }
.tab { padding: 10px 18px; background: transparent; border: none; border-radius: 8px 8px 0 0; cursor: pointer; font-size: 13px; font-weight: 500; color: var(--text-secondary); transition: all 0.15s; }
.tab:hover { background: var(--bg); }
.tab.active { background: var(--primary); color: white; }

.tab-content { display: none; background: var(--card); padding: 16px; border-radius: 0 0 var(--radius) var(--radius); box-shadow: var(--shadow); }
.tab-content.active { display: block; }

.filters { display: flex; gap: 8px; margin-bottom: 16px; flex-wrap: wrap; }
.filters select, .filters button { padding: 7px 14px; border: 1px solid var(--border); border-radius: 6px; font-size: 13px; background: white; }
.filters button { background: var(--primary); color: white; border: none; cursor: pointer; }

.events-list, .patterns-list { display: flex; flex-direction: column; gap: 8px; }

.event-card-compact {
    background: var(--card);
    padding: 10px 14px;
    border-radius: 8px;
    border-right: 3px solid var(--primary);
    transition: background 0.15s;
}
.event-card-compact:hover { background: #f8f9fa; }
.event-card-compact.labeled { border-right-color: var(--success); }
.event-card-compact.ignored { border-right-color: #9ca3af; opacity: 0.65; }

.event-row { display: flex; align-items: center; gap: 12px; }
.event-icon { font-size: 22px; min-width: 28px; text-align: center; }
.event-main { flex: 0 0 180px; }
.event-title-compact { font-weight: 600; font-size: 14px; }
.event-time-compact { font-size: 12px; color: var(--text-secondary); margin-top: 1px; }
.event-stats { display: flex; gap: 12px; font-size: 12px; color: var(--text-secondary); flex: 1; }
.event-stats span { white-space: nowrap; }
.event-audio { flex: 1; max-width: 280px; min-width: 180px; }
.event-audio audio { width: 100%; height: 34px; }
.event-actions-compact { min-width: 60px; }

/* ==========================================================================
   Devices Page
   ========================================================================== */

.devices-summary {
    display: flex;
    gap: 16px;
    align-items: center;
    background: var(--card);
    padding: 12px 16px;
    border-radius: var(--radius);
    margin-bottom: 16px;
    box-shadow: var(--shadow);
    font-size: 13px;
    color: var(--text-secondary);
}
.devices-summary strong { color: var(--text); }

#devices-list { display: flex; flex-direction: column; gap: 12px; }

.device-card {
    background: var(--card);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border-right: 4px solid var(--success);
    overflow: hidden;
}
.device-card.device-offline { border-right-color: var(--danger); opacity: 0.75; }

.device-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 16px;
    background: #fafbfc;
    border-bottom: 1px solid var(--border);
}
.device-name { font-size: 15px; font-weight: 600; color: var(--text); }
.device-status { font-size: 13px; font-weight: 600; }

.device-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 6px 16px;
    padding: 12px 16px;
    font-size: 13px;
}
.device-detail { display: flex; gap: 6px; }
.detail-label { color: var(--text-secondary); white-space: nowrap; }
.detail-value { color: var(--text); font-weight: 500; }

.battery-critical { color: var(--danger) !important; font-weight: 700 !important; }
.battery-low { color: var(--warning) !important; }
.battery-ok { color: var(--success) !important; }

.device-controls {
    display: flex;
    gap: 6px;
    padding: 10px 16px;
    border-top: 1px solid var(--border);
    flex-wrap: wrap;
}

/* ==========================================================================
   Stats Page
   ========================================================================== */

.stats-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 12px; margin-bottom: 20px; }
.stat-card { background: var(--card); border-radius: var(--radius); padding: 16px; text-align: center; box-shadow: var(--shadow); }
.stat-icon { font-size: 1.8em; margin-bottom: 6px; }
.stat-value { font-size: 2em; font-weight: 700; color: var(--text); margin-bottom: 2px; }
.stat-label { color: var(--text-secondary); font-size: 12px; }

.charts-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(380px, 1fr)); gap: 16px; margin-bottom: 20px; }
.chart-container { background: var(--card); border-radius: var(--radius); padding: 16px; box-shadow: var(--shadow); }
.chart-container h2 { margin-bottom: 12px; font-size: 15px; font-weight: 600; }
.chart-container canvas { max-height: 280px; }

.recent-activity { background: var(--card); border-radius: var(--radius); padding: 16px; box-shadow: var(--shadow); }
.recent-activity h2 { margin-bottom: 12px; font-size: 15px; font-weight: 600; }
.activity-item { display: flex; align-items: center; gap: 12px; padding: 8px 0; border-bottom: 1px solid var(--border); }
.activity-item:last-child { border-bottom: none; }
.activity-time { font-family: monospace; color: var(--text-secondary); min-width: 55px; font-size: 12px; }
.activity-icon { font-size: 1.3em; }
.activity-type { flex: 1; font-weight: 500; font-size: 13px; }
.activity-duration { color: var(--text-secondary); font-size: 12px; }
.activity-label { font-size: 1.1em; }
.no-data { text-align: center; color: var(--text-secondary); padding: 20px; }

/* Usage tables */
.usage-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.usage-table thead { background: var(--bg); }
.usage-table th { padding: 8px 10px; text-align: right; font-weight: 600; color: var(--text-secondary); font-size: 12px; }
.usage-table td { padding: 7px 10px; border-bottom: 1px solid var(--border); }
.usage-table tbody tr:hover { background: #f8f9fa; }
.usage-table tbody tr:last-child td { border-bottom: none; }

/* ==========================================================================
   Patterns
   ========================================================================== */

.pattern-card { background: #f8f9fa; padding: 14px; border-radius: 8px; border-right: 3px solid var(--primary); }
.pattern-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; }
.pattern-actions { display: flex; gap: 8px; }
.pattern-info { font-size: 13px; color: var(--text-secondary); margin-top: 8px; }
.pattern-info div { margin-bottom: 4px; }
.patterns-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }
.patterns-header div { display: flex; gap: 8px; }
.patterns-header button { padding: 8px 16px; background: var(--success); color: white; border: none; border-radius: 6px; cursor: pointer; font-size: 13px; }

.confidence-bar { width: 100%; height: 6px; background: #e5e7eb; border-radius: 3px; overflow: hidden; margin-top: 4px; }
.confidence-fill { height: 100%; transition: width 0.3s; }
.confidence-high { background: var(--success); }
.confidence-medium { background: var(--warning); }
.confidence-low { background: var(--danger); }

.similar-pair { background: #fffbeb; padding: 14px; border-radius: 8px; border-right: 3px solid var(--warning); margin-bottom: 12px; }
.similar-pair-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; }
.similar-pair-patterns { display: grid; grid-template-columns: 1fr auto 1fr; gap: 12px; align-items: center; margin-bottom: 8px; }
.similar-pair-pattern { background: white; padding: 10px; border-radius: 6px; }
.merge-arrow { font-size: 22px; color: var(--warning); }

.recurring-group { background: #fffbeb; padding: 14px; border-radius: 8px; border-right: 3px solid var(--warning); margin-bottom: 12px; }
.recurring-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; }
.recurring-title { font-weight: 600; font-size: 15px; }
.recurring-events { font-size: 13px; color: var(--text-secondary); margin-top: 8px; }
.recurring-events div { padding: 4px 0; border-bottom: 1px solid #f3f4f6; }
.recurring-events div:last-child { border-bottom: none; }

/* ==========================================================================
   Language Badges
   ========================================================================== */

.language-badge { display: inline-block; padding: 2px 8px; border-radius: 10px; font-size: 11px; font-weight: 600; background: #dbeafe; color: #1e40af; border: 1px solid #93c5fd; }
.language-badge.language-he { background: #d1fae5; color: #065f46; border-color: #6ee7b7; }
.language-badge.language-ar { background: #ffedd5; color: #9a3412; border-color: #fdba74; }
.language-badge.language-en { background: #dbeafe; color: #1e40af; border-color: #93c5fd; }
.language-badge.language-ru { background: #fce7f3; color: #9d174d; border-color: #f9a8d4; }

/* ==========================================================================
   Info / Loading
   ========================================================================== */

.info-text {
    background: #eff6ff;
    padding: 12px 14px;
    border-radius: 8px;
    margin-bottom: 16px;
    color: #1e40af;
    border-right: 3px solid var(--primary);
    font-size: 13px;
}

.loading { text-align: center; color: var(--text-secondary); padding: 20px; }

/* ==========================================================================
   Modal
   ========================================================================== */

.modal { display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.4); z-index: 1000; align-items: center; justify-content: center; }
.modal.active { display: flex; }

.modal-content {
    background: var(--card);
    padding: 24px;
    border-radius: 12px;
    max-width: 480px;
    width: 92%;
    max-height: 88vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
}
.modal-content h2 { margin-bottom: 16px; font-size: 18px; }
.modal-content label { display: block; margin-top: 12px; margin-bottom: 4px; font-weight: 600; font-size: 13px; color: var(--text-secondary); }
.modal-content input[type="text"], .modal-content input[type="number"], .modal-content select, .modal-content textarea {
    width: 100%; padding: 8px 10px; border: 1px solid var(--border); border-radius: 6px; font-size: 14px; background: #fafbfc;
}
.modal-content input:focus, .modal-content select:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 2px rgba(26,115,232,0.15); }
.modal-content small { color: var(--text-secondary); font-size: 12px; }

.modal-actions { display: flex; gap: 8px; margin-top: 20px; }
.modal-actions button { flex: 1; padding: 10px; border: none; border-radius: 6px; cursor: pointer; font-size: 14px; font-weight: 500; }
.modal-actions button[type="submit"] { background: var(--primary); color: white; }
.modal-actions button[type="button"] { background: #e4e6eb; color: var(--text); }

.checkbox-list { max-height: 280px; overflow-y: auto; border: 1px solid var(--border); border-radius: 6px; padding: 8px; }
.checkbox-list label { display: block; padding: 4px; margin: 0; font-weight: normal; }

/* ==========================================================================
   Ensemble Popup
   ========================================================================== */

.ens-badges { display: inline-flex; gap: 2px; flex-wrap: wrap; cursor: pointer; }
.ens-badge { cursor: pointer; margin-left: 2px; }

#ens-popup { position: fixed; top: 0; left: 0; right: 0; bottom: 0; z-index: 2000; display: flex; align-items: center; justify-content: center; }
.ens-popup-backdrop { position: absolute; top: 0; left: 0; right: 0; bottom: 0; background: rgba(0,0,0,0.4); }
.ens-popup-content { position: relative; background: var(--card); border-radius: 12px; padding: 16px; max-width: 420px; width: 92%; max-height: 80vh; overflow-y: auto; box-shadow: var(--shadow-lg); }
.ens-popup-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 10px; padding-bottom: 8px; border-bottom: 1px solid var(--border); }
.ens-popup-header button { background: none; border: none; font-size: 18px; cursor: pointer; color: #9ca3af; padding: 4px 8px; }
.ens-popup-item { padding: 8px 0; border-bottom: 1px solid #f3f4f6; }
.ens-popup-item:last-child { border-bottom: none; }
.ens-popup-item-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 4px; }
.ens-popup-desc { font-size: 13px; color: #6b7280; margin: 3px 0; line-height: 1.5; }
.ens-popup-details { display: flex; flex-wrap: wrap; gap: 3px; margin-top: 4px; }
.ens-popup-tag { display: inline-block; background: #f3f4f6; padding: 2px 7px; border-radius: 8px; font-size: 11px; color: #6b7280; }

/* ==========================================================================
   Pagination
   ========================================================================== */

.pagination-controls { display: flex; justify-content: center; align-items: center; gap: 12px; margin-top: 16px; padding: 12px; }
.pagination-controls button { padding: 7px 14px; background: var(--primary); color: white; border: none; border-radius: 6px; cursor: pointer; font-size: 13px; }
.pagination-controls button:disabled { background: #d1d5db; cursor: not-allowed; }
.page-info { font-weight: 600; font-size: 13px; }

/* ==========================================================================
   Version Badge
   ========================================================================== */

.version-badge {
    position: fixed;
    bottom: 6px;
    left: 6px;
    background: rgba(0,0,0,0.55);
    color: #d1d5db;
    font-size: 10px;
    padding: 2px 7px;
    border-radius: 4px;
    z-index: 999;
    direction: ltr;
}

/* ==========================================================================
   Mobile
   ========================================================================== */

@media (max-width: 768px) {
    .container { padding: 8px; }
    header { padding: 12px; }
    header h1 { font-size: 17px; }
    .nav-toggle { display: block; }
    nav { display: none; flex-direction: column; gap: 2px; width: 100%; }
    nav.open { display: flex; }
    nav a { padding: 10px 14px; font-size: 14px; border-radius: 6px; width: 100%; }
    #user-info { display: none !important; }
    .stats { gap: 8px; font-size: 12px; flex-wrap: wrap; }
    .tabs { gap: 2px; }
    .tab { padding: 8px 12px; font-size: 12px; }
    .tab-content { padding: 10px; }
    .filters { flex-wrap: wrap; }
    .filters select, .filters button { flex: 1; min-width: 0; font-size: 12px; }

    .event-row { flex-direction: column; gap: 6px; }
    .event-main { flex: 1 1 auto; }
    .event-stats { width: 100%; flex-wrap: wrap; font-size: 11px; }
    .ens-badge .mod-name { display: none; }
    .ens-badge { padding: 2px 5px !important; font-size: 10px !important; }
    .event-audio { width: 100%; max-width: 100%; flex: none; }
    .event-audio audio { height: 38px; }
    .event-actions-compact { display: flex; gap: 6px; width: 100%; }
    .event-actions-compact .btn { flex: 1; text-align: center; }

    .devices-summary { flex-wrap: wrap; gap: 8px; padding: 10px; }
    .device-card { border-radius: 8px; }
    .device-header { flex-direction: column; align-items: flex-start; gap: 4px; padding: 10px 12px; }
    .device-details { grid-template-columns: 1fr; padding: 8px 12px; }
    .device-controls { padding: 8px 12px; flex-wrap: wrap; }
    .device-controls .btn { flex: 1; text-align: center; font-size: 11px; padding: 6px 4px; }

    .stats-cards { grid-template-columns: repeat(2, 1fr); gap: 8px; }
    .stat-card { padding: 10px; }
    .stat-value { font-size: 1.6em; }
    .charts-grid { grid-template-columns: 1fr; }

    .patterns-header { flex-direction: column; gap: 8px; align-items: stretch; }
    .pattern-header { flex-direction: column; gap: 8px; }
    .similar-pair-patterns { grid-template-columns: 1fr; }
    .merge-arrow { text-align: center; transform: rotate(90deg); }
    .recurring-header { flex-direction: column; gap: 6px; }

    .modal-content { padding: 16px; width: 96%; }
}

@media (max-width: 400px) {
    .stats-cards { grid-template-columns: 1fr 1fr; }
    .stat-value { font-size: 1.4em; }
    .tabs { overflow-x: auto; -webkit-overflow-scrolling: touch; }
    .tab { white-space: nowrap; flex-shrink: 0; }
}

/* ==========================================================================
   Print
   ========================================================================== */

@media print {
    nav, .btn, .device-controls, .version-badge, .filters, .pagination-controls { display: none !important; }
    .device-card, .event-card-compact { break-inside: avoid; box-shadow: none; border: 1px solid #ddd; }
    body { background: white; }
}