:root {
    --bg-color: #f8fafc;
    --container-bg: #ffffff;
    --panel-bg: #f1f5f9;
    --text-color: #0f172a;
    --metadata-color: #475569;
    --border-color: #e2e8f0;
    --panel-border: #cbd5e1;
    --chart-bg: #ffffff;
    --input-bg: #ffffff;
    --input-text: #0f172a;
    --input-border: #cbd5e1;
    --btn-bg: #f1f5f9;
    --btn-text: #0f172a;
    --btn-border: #cbd5e1;
    --accent-color: #0284c7;
    --grid-color: rgba(0, 0, 0, 0.06);
}

body.dark-theme {
    --bg-color: #0f172a;
    --container-bg: #0f172a;
    --panel-bg: #1e293b;
    --text-color: #f8fafc;
    --metadata-color: #94a3b8;
    --border-color: #1e293b;
    --panel-border: #334155;
    --chart-bg: #020617;
    --input-bg: #0f172a;
    --input-text: #f8fafc;
    --input-border: #475569;
    --btn-bg: #0f172a;
    --btn-text: #f8fafc;
    --btn-border: #475569;
    --accent-color: #38bdf8;
    --grid-color: rgba(255, 255, 255, 0.08);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    margin: 0;
    padding: 20px;
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: background-color 0.3s, color 0.3s;
}

.container {
    max-width: 100%;
    width: 100%;
    margin: 0;
    padding: 15px 30px;
    box-sizing: border-box;
}


header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px;
}

.calibration-panel {
    background-color: var(--panel-bg);
    border: 1px solid var(--panel-border);
    border-radius: 6px;
    padding: 8px 12px;
    font-size: 13px;
    color: var(--text-color);
}

.cal-input-container {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 6px;
}

h1 {
    font-size: 24px;
    margin: 0 0 5px 0;
    color: var(--accent-color);
}

.metadata {
    font-size: 14px;
    color: var(--metadata-color);
}

#eeg-chart-container {
    background-color: var(--chart-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 15px;
    margin-top: 20px;
    min-height: 450px;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.loading {
    color: var(--metadata-color);
    font-style: italic;
}

.control-panel {
    background-color: var(--panel-bg);
    border: 1px solid var(--panel-border);
    border-radius: 8px;
    padding: 12px 20px;
    margin-top: 15px;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}

.control-panel label {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-color);
}

.control-panel select {
    background-color: var(--input-bg);
    color: var(--input-text);
    border: 1px solid var(--input-border);
    border-radius: 4px;
    padding: 6px 12px;
    font-size: 14px;
    cursor: pointer;
    outline: none;
    transition: border-color 0.2s;
}

.control-panel select:focus {
    border-color: var(--accent-color);
}

.timeline-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background-color: var(--panel-bg);
    border: 1px solid var(--panel-border);
    border-radius: 8px;
    padding: 10px 20px;
    margin-top: 15px;
    gap: 15px;
}

.nav-btn {
    background-color: var(--btn-bg);
    color: var(--btn-text);
    border: 1px solid var(--btn-border);
    border-radius: 4px;
    padding: 6px 12px;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.2s;
}

.nav-btn:hover {
    background-color: var(--accent-color);
    color: #ffffff;
    border-color: var(--accent-color);
}

#timeline-slider {
    flex-grow: 1;
    cursor: pointer;
    accent-color: var(--accent-color);
}

#timeline-label {
    font-family: monospace;
    font-size: 14px;
    color: var(--text-color);
    min-width: 110px;
    text-align: center;
}

.u-legend {
    display: none !important;
}

/* Modal Styling */
.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(3px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

.modal-content {
    background-color: var(--container-bg);
    border: 1px solid var(--panel-border);
    border-radius: 10px;
    width: 450px;
    max-width: 90vw;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
    overflow: hidden;
    color: var(--text-color);
}

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

.modal-header h3 {
    margin: 0;
    font-size: 16px;
    color: var(--accent-color);
}

.modal-close {
    background: none;
    border: none;
    font-size: 22px;
    color: var(--metadata-color);
    cursor: pointer;
}

.modal-body {
    padding: 20px;
}

.form-group {
    margin-bottom: 15px;
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.form-group label {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-color);
}

.form-control {
    background-color: var(--input-bg);
    color: var(--input-text);
    border: 1px solid var(--input-border);
    border-radius: 6px;
    padding: 8px 12px;
    font-size: 14px;
    outline: none;
    transition: border-color 0.2s;
}

.form-control:focus {
    border-color: var(--accent-color);
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 20px;
}


/* Sidebar styling voor Annotaties & Events */
.sidebar {
    width: 320px;
    background-color: var(--panel-bg);

    border: 1px solid var(--panel-border);
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    flex-shrink: 0;
    transition: background-color 0.3s, border-color 0.3s;
}

.sidebar-header {
    padding: 12px 15px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: var(--container-bg);
}

.sidebar-header h2 {
    font-size: 16px;
    margin: 0;
    color: var(--text-color);
}

.sidebar-content {
    flex-grow: 1;
    overflow-y: auto;
    padding: 10px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.no-events-indicator {
    color: var(--metadata-color);
    font-style: italic;
    font-size: 13px;
    text-align: center;
    margin-top: 20px;
}

.annotation-item {
    background-color: var(--container-bg);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 8px 12px;
    cursor: pointer;
    font-size: 13px;
    transition: all 0.2s;
    border-left: 4px solid var(--accent-color);
}

.annotation-item:hover {
    border-color: var(--accent-color);
    transform: translateY(-1px);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.08);
}

/* Speciale styling voor Siena Seizures */
.annotation-item.seizure {
    border-left-color: #ef4444;
    /* Rood voor seizure */
}

.annotation-item.user-annotation {
    border-left-color: #eab308;
    /* Geel voor handmatige markers */
}

.annotation-title {
    font-weight: bold;
    color: var(--text-color);
    margin-bottom: 3px;
}

.annotation-time {
    font-family: monospace;
    font-size: 11px;
    color: var(--metadata-color);
}

.annotation-details {
    font-size: 11px;
    color: var(--metadata-color);
    margin-top: 4px;
}