:root {
    --primary: #00B894;
    --secondary: #00CEC9;
    --accent: #FDCB6E;
    --bg-base: #0A1A14;
    --bg-panel: rgba(255, 255, 255, 0.04);
    --bg-panel-hover: rgba(255, 255, 255, 0.08);
    --text-primary: #FFFFFF;
    --text-secondary: #95A5A6;
    --border-color: rgba(255, 255, 255, 0.1);
    --danger: #FF7675;
    --success: #00B894;
    --warning: #FDCB6E;
    --border-radius: 12px;
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --glass-blur: blur(20px);
}

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

body {
    font-family: var(--font-family);
    background-color: var(--bg-base);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    overflow-x: hidden;
}

/* App Layout */
.app-container {
    display: flex;
    width: 100%;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 280px;
    background: var(--bg-panel);
    backdrop-filter: var(--glass-blur);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    padding: 24px;
    gap: 32px;
    flex-shrink: 0;
    z-index: 10;
}

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

.logo h1 {
    font-size: 1.25rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.sidebar-section h3 {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    margin-bottom: 16px;
    font-weight: 600;
}

.flex-grow {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
}

/* Grids & Buttons */
.template-grid, .presets-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 10px;
}

.presets-grid {
    grid-template-columns: 1fr 1fr;
}

.template-btn, .preset-btn {
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 10px;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: center;
}

.template-btn:hover, .preset-btn:hover {
    background: var(--bg-panel-hover);
    color: var(--text-primary);
    border-color: var(--primary);
}

.action-btn {
    width: 100%;
    padding: 14px;
    background: var(--primary);
    color: #000;
    border: none;
    border-radius: var(--border-radius);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    margin-bottom: 12px;
}

.action-btn:hover {
    filter: brightness(1.1);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 184, 148, 0.3);
}

.action-btn.outline {
    background: transparent;
    border: 1px solid var(--primary);
    color: var(--primary);
}

.action-btn.outline:hover {
    background: rgba(0, 184, 148, 0.1);
}

.text-btn {
    background: transparent;
    border: none;
    color: var(--primary);
    font-size: 0.9rem;
    cursor: pointer;
    font-weight: 600;
}

.text-btn:hover {
    text-decoration: underline;
}

/* Forms */
.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.95rem;
    transition: border-color 0.2s;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    justify-content: center;
    padding: 40px;
    height: 100vh;
    overflow-y: auto;
}

.meeting-dashboard {
    width: 100%;
    max-width: 800px;
    display: flex;
    flex-direction: column;
    gap: 32px;
}

/* Ticker Section */
.glass-panel {
    background: linear-gradient(135deg, rgba(255,255,255,0.05) 0%, rgba(255,255,255,0.01) 100%);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 40px;
    box-shadow: 0 24px 48px rgba(0,0,0,0.4);
    position: relative;
    overflow: hidden;
}

.glass-panel::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
}

.ticker-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.ticker-header h2 {
    font-size: 1.25rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.timer {
    font-variant-numeric: tabular-nums;
    font-family: monospace;
    font-size: 1.5rem;
    color: var(--text-primary);
    background: var(--bg-panel);
    padding: 8px 16px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.cost-display {
    text-align: center;
    margin: 40px 0;
}

.currency {
    font-size: 3rem;
    color: var(--text-secondary);
    vertical-align: top;
    line-height: 1;
}

.cost-value {
    font-size: 6rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    font-variant-numeric: tabular-nums;
    background: linear-gradient(180deg, #FFFFFF 0%, #A0ABC0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    transition: transform 0.1s;
}

.pulse-target.pulsing {
    animation: pulse-border 1s infinite alternate;
}

@keyframes pulse-border {
    0% { box-shadow: 0 24px 48px rgba(0,0,0,0.4), 0 0 0 rgba(0, 184, 148, 0); }
    100% { box-shadow: 0 24px 48px rgba(0,0,0,0.4), 0 0 30px rgba(0, 184, 148, 0.15); }
}

.cost-rates {
    display: flex;
    justify-content: space-around;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
    margin-bottom: 32px;
}

.rate-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.rate-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.rate-value {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--primary);
    font-variant-numeric: tabular-nums;
}

#efficiencyScore {
    color: var(--accent);
}

.controls {
    display: flex;
    gap: 16px;
    justify-content: center;
}

.control-btn {
    padding: 16px 32px;
    border-radius: 30px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: all 0.2s ease;
    min-width: 140px;
}

.control-btn.primary {
    background: var(--primary);
    color: #0A1A14;
}

.control-btn.primary:hover {
    background: #00d2a9;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 184, 148, 0.4);
}

.control-btn.warning {
    background: var(--warning);
    color: #0A1A14;
}

.control-btn.danger {
    background: var(--danger);
    color: #fff;
}

.control-btn.outline {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.control-btn.outline:hover {
    background: var(--bg-panel);
    border-color: var(--text-secondary);
}

.hidden {
    display: none !important;
}

/* Attendees Section */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.attendees-section h2 {
    font-size: 1.2rem;
    font-weight: 600;
}

.attendee-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.empty-state {
    text-align: center;
    padding: 40px 24px;
    background: var(--bg-panel);
    border: 1px dashed var(--border-color);
    border-radius: var(--border-radius);
    color: var(--text-secondary);
}

.attendee-item {
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 16px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.attendee-info h4 {
    font-size: 1.05rem;
    margin-bottom: 4px;
}

.attendee-info p {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.attendee-cost {
    text-align: right;
    display: flex;
    align-items: center;
    gap: 16px;
}

.a-live-cost {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary);
    font-variant-numeric: tabular-nums;
}

.remove-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 1.2rem;
}

.remove-btn:hover {
    color: var(--danger);
}

/* Modals */
.modal-overlay {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.modal-overlay.active {
    opacity: 1;
    pointer-events: all;
}

.modal {
    background: var(--bg-base);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    width: 100%;
    max-width: 400px;
    box-shadow: 0 24px 48px rgba(0, 0, 0, 0.5);
    transform: translateY(20px);
    transition: transform 0.3s ease;
}

.modal.large-modal {
    max-width: 600px;
}

.modal-overlay.active .modal {
    transform: translateY(0);
}

.modal-header {
    padding: 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.close-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
}

.close-btn:hover { color: var(--text-primary); }

.modal-body { padding: 24px; }
.modal-footer {
    padding: 24px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 16px;
}

.modal-footer .action-btn {
    width: auto; margin-bottom: 0; padding: 10px 24px;
}

/* History Chart & Stats */
.history-stats {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
}
.stat-card {
    flex: 1;
    background: var(--bg-panel);
    padding: 16px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}
.stat-card h3 {
    font-size: 0.85rem; color: var(--text-secondary); margin-bottom: 8px;
}
.stat-val {
    font-size: 1.5rem; font-weight: 700; color: var(--primary);
}

.history-chart {
    margin-bottom: 24px;
}
.simple-bar-chart {
    display: flex;
    align-items: flex-end;
    height: 150px;
    gap: 8px;
    padding-top: 20px;
    border-bottom: 1px solid var(--border-color);
}
.bar {
    flex: 1;
    background: var(--primary);
    border-radius: 4px 4px 0 0;
    position: relative;
    min-height: 2px;
    transition: height 0.5s ease;
}
.bar:hover::after {
    content: attr(data-cost);
    position: absolute;
    top: -25px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-base);
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.75rem;
    border: 1px solid var(--border-color);
    white-space: nowrap;
}

.history-list {
    max-height: 200px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.history-item {
    display: flex;
    justify-content: space-between;
    padding: 12px;
    background: var(--bg-panel);
    border-radius: 6px;
    font-size: 0.9rem;
}
.hi-date { color: var(--text-secondary); }
.hi-cost { font-weight: 600; color: var(--primary); }

/* Toast */
.toast {
    position: fixed;
    bottom: 30px; right: 30px;
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 16px 24px;
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
    transform: translateY(100px);
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    z-index: 1000;
    backdrop-filter: var(--glass-blur);
}
.toast.visible {
    transform: translateY(0);
    opacity: 1;
}

/* Print Styles */
@media print {
    .no-print, .sidebar {
        display: none !important;
    }
    body {
        background: white;
        color: black;
    }
    .main-content {
        padding: 0;
        height: auto;
        overflow: visible;
    }
    .glass-panel {
        box-shadow: none;
        border: 1px solid #ccc;
        background: #f9f9f9;
    }
    .cost-value {
        -webkit-text-fill-color: black;
        background: none;
        color: black;
    }
    .rate-value, .a-live-cost, .total-cost, #efficiencyScore {
        color: black !important;
    }
    .attendee-item {
        background: white;
        border: 1px solid #ccc;
        color: black;
    }
    .attendee-info p { color: #666; }
    h2, span { color: black !important; }
}

@media (max-width: 768px) {
    .app-container { flex-direction: column; }
    .sidebar { width: 100%; border-right: none; border-bottom: 1px solid var(--border-color); padding: 20px; }
    .main-content { padding: 20px; }
    .cost-value { font-size: 4rem; }
    .cost-rates { flex-direction: column; gap: 16px; }
    .controls { flex-wrap: wrap; }
}