/* Root variables for theming */
:root {
    --bg-primary: #ffffff;
    --bg-secondary: #f5f5f5;
    --text-primary: #000000;
    --text-secondary: #666666;
    --border-color: #e0e0e0;
    --overlap-color: #4caf50;
    --work-hours-color: #2196f3;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    --card-bg: #fafafa;
}

[data-theme="dark"] {
    --bg-primary: #1e1e1e;
    --bg-secondary: #2d2d2d;
    --text-primary: #e0e0e0;
    --text-secondary: #b0b0b0;
    --border-color: #404040;
    --overlap-color: #66bb6a;
    --work-hours-color: #42a5f5;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    --card-bg: #252525;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    transition: background-color 0.3s, color 0.3s;
    padding: 20px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
}

/* Header */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid var(--border-color);
}

h1 {
    font-size: 28px;
    font-weight: 600;
}

#timelinesTitle {
    margin-bottom: 5px;
}

.preferences {
    display: flex;
    gap: 15px;
}

.pref-button {
    padding: 8px 16px;
    border: 2px solid var(--border-color);
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.3s;
}

    .pref-button:hover {
        background-color: var(--work-hours-color);
        color: white;
        border-color: var(--work-hours-color);
    }

    .pref-button.active {
        background-color: var(--work-hours-color);
        color: white;
        border-color: var(--work-hours-color);
    }

/* City Input Section */
.input-section {
    background-color: var(--card-bg);
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 30px;
    box-shadow: var(--shadow);
}

    .input-section h2 {
        font-size: 18px;
        margin-bottom: 15px;
    }

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 12px;
    margin-bottom: 15px;
}

.form-group {
    display: flex;
    flex-direction: column;
}

    .form-group label {
        font-size: 12px;
        font-weight: 600;
        margin-bottom: 5px;
        color: var(--text-secondary);
        text-transform: uppercase;
        letter-spacing: 0.5px;
    }

    .form-group input,
    .form-group select {
        padding: 10px;
        border: 1px solid var(--border-color);
        border-radius: 4px;
        background-color: var(--bg-primary);
        color: var(--text-primary);
        font-size: 14px;
    }

        .form-group input:focus,
        .form-group select:focus {
            outline: none;
            border-color: var(--work-hours-color);
            box-shadow: 0 0 0 3px rgba(33, 150, 243, 0.1);
        }

.button-group {
    display: flex;
    gap: 10px;
}

button {
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    transition: all 0.3s;
}

.btn-primary {
    background-color: var(--work-hours-color);
    color: white;
}

    .btn-primary:hover {
        opacity: 0.9;
        transform: translateY(-1px);
    }

.btn-secondary {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

    .btn-secondary:hover {
        background-color: var(--border-color);
    }

/* Timelines Section */
.timelines-section {
    margin-bottom: 30px;
}

    .timelines-section h2 {
        font-size: 18px;
        margin-bottom: 20px;
    }

.city-timeline {
    background-color: var(--card-bg);
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 20px;
    box-shadow: var(--shadow);
}

.city-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.city-name {
    font-size: 16px;
    font-weight: 600;
}

.remove-city {
    background-color: #ff6b6b;
    color: white;
    padding: 5px 10px;
    border-radius: 4px;
    border: none;
    cursor: pointer;
    font-size: 12px;
}

    .remove-city:hover {
        background-color: #ff5252;
    }

.time-row {
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 10px;
    line-height: 1.6;
}

    .time-row strong {
        color: var(--text-primary);
    }

.timeline-container {
    position: relative;
    height: 40px;
    background-color: var(--bg-secondary);
    border-radius: 4px;
    margin-bottom: 10px;
    border: 1px solid var(--border-color);
    overflow: visible;
}

.timeline-bar {
    position: absolute;
    z-index: 1;
    height: 100%;
    background-color: #999999;
    opacity: 0.5;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    color: white;
    font-weight: 600;
}

.timeline-overlap {
    position: absolute;
    z-index: 2;
    height: 100%;
    background-color: var(--overlap-color);
    opacity: 0.85;
    border: 0;
}

.timeline-hour-line {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 1px;
    background-color: rgba(128, 128, 128, 0.4);
    z-index: 3;
}

.timeline-labels {
    display: flex;
    justify-content: space-between;
    font-size: 10px;
    color: var(--text-secondary);
    margin-bottom: 5px;
    padding: 0 5px;
}

.timeline-hours {
    font-size: 13px;
    color: var(--text-secondary);
    padding: 4px 5px;
    font-weight: 500;
}

.hour-marker {
    position: absolute;
    transform: translateX(-50%);
    white-space: nowrap;
}

/* Weather Section */
.weather-info {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    margin-bottom: 10px;
}

.weather-icon {
    font-size: 24px;
}

.weather-details {
    display: flex;
    flex-direction: column;
}

.weather-temp {
    font-weight: 600;
    color: var(--text-primary);
}

.weather-desc {
    color: var(--text-secondary);
    font-size: 12px;
}

#city-tz-label, #city-tz-time {
    font-size: 12px;
    color: var(--text-primary);
}

#user-tz-label, #user-tz-time {
    font-size: 12px;
    color: var(--text-secondary);
}

/* Messages */
.message {
    padding: 15px;
    border-radius: 4px;
    margin-bottom: 20px;
    text-align: center;
}

    .message.info {
        background-color: #e3f2fd;
        color: #1976d2;
        border-left: 4px solid #1976d2;
    }

[data-theme="dark"] .message.info {
    background-color: #1a237e;
    color: #64b5f6;
    border-left-color: #64b5f6;
}

.message.error {
    background-color: #ffebee;
    color: #c62828;
    border-left: 4px solid #c62828;
}

[data-theme="dark"] .message.error {
    background-color: #b71c1c;
    color: #ffcdd2;
    border-left-color: #ffcdd2;
}

.message.success {
    background-color: #e8f5e9;
    color: #2e7d32;
    border-left: 4px solid #2e7d32;
}

[data-theme="dark"] .message.success {
    background-color: #1b5e20;
    color: #81c784;
    border-left-color: #81c784;
}

.message.warning {
    background-color: #fff3e0;
    color: #ef6c00;
    border-left: 4px solid #ef6c00;
}

[data-theme="dark"] .message.warning {
    background-color: #e65100;
    color: #ffcc02;
    border-left-color: #ffcc02;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-secondary);
}

    .empty-state p {
        margin-bottom: 20px;
    }

/* Geocoding Modal */
.geocoding-modal {
    padding: 0;
    border: none;
    border-radius: 8px;
    box-shadow: var(--shadow);
    max-width: 400px;
}

.geocoding-modal::backdrop {
    background-color: rgba(0, 0, 0, 0.5);
}

.modal-content {
    padding: 30px;
    background-color: var(--bg-primary);
    color: var(--text-primary);
}

    .modal-content h3 {
        margin-bottom: 15px;
        font-size: 18px;
    }

    .modal-content p {
        margin-bottom: 20px;
        color: var(--text-secondary);
    }

    .modal-content select {
        width: 100%;
        padding: 10px;
        border: 1px solid var(--border-color);
        border-radius: 4px;
        background-color: var(--bg-primary);
        color: var(--text-primary);
        font-size: 14px;
        margin-bottom: 20px;
    }

        .modal-content select:focus {
            outline: none;
            border-color: var(--work-hours-color);
            box-shadow: 0 0 0 3px rgba(33, 150, 243, 0.1);
        }

.modal-buttons {
    display: flex;
    gap: 10px;
}

    .modal-buttons button {
        flex: 1;
    }

/* Timezone Display */
.timezone-display-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    gap: 5px;
}

    .timezone-display-wrapper input {
        flex: 1;
        display: inline-block;
        padding: 10px;
        border: 1px solid var(--border-color);
        border-radius: 4px;
        background-color: var(--bg-primary);
        color: var(--text-primary);
        font-size: 14px;
    }

    .timezone-display-wrapper select {
        flex: 1;
        display: none;
        padding: 10px;
        border: 1px solid var(--border-color);
        border-radius: 4px;
        background-color: var(--bg-primary);
        color: var(--text-primary);
        font-size: 14px;
    }

        .timezone-display-wrapper select:focus {
            outline: none;
            border-color: var(--work-hours-color);
            box-shadow: 0 0 0 3px rgba(33, 150, 243, 0.1);
        }

.btn-timezone-manual {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.3s;
}

    .btn-timezone-manual:hover {
        background-color: var(--border-color);
    }

    .btn-timezone-manual.active {
        background-color: var(--work-hours-color);
        color: white;
        border-color: var(--work-hours-color);
    }

/* Ad styling */
.adUnit  {
    display: flex;
    justify-content: center;
    align-items: center;
}

/* Responsive */
@media (max-width: 768px) {
    header {
        flex-direction: column;
        gap: 15px;
        align-items: flex-start;
    }

    .preferences {
        align-self: flex-end;
    }

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

    .button-group {
        flex-direction: column;
    }

    button {
        width: 100%;
    }
}