:root {
    /* Dark theme (default) */
    --bg-gradient: linear-gradient(135deg, #0f0f23 0%, #1a1a2e 50%, #16213e 100%);
    --bg-overlay-1: radial-gradient(circle at 20% 80%, rgba(120, 119, 198, 0.3) 0%, transparent 50%);
    --bg-overlay-2: radial-gradient(circle at 80% 20%, rgba(255, 119, 198, 0.15) 0%, transparent 50%);
    --bg-overlay-3: radial-gradient(circle at 40% 40%, rgba(120, 219, 255, 0.1) 0%, transparent 50%);
    --text-primary: #ffffff;
    --text-secondary: #e2e8f0;
    --text-tertiary: #cbd5e1;
    --text-muted: #94a3b8;
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-bg-strong: rgba(255, 255, 255, 0.08);
    --glass-border-strong: rgba(255, 255, 255, 0.12);
    --modal-bg: rgba(30, 30, 60, 0.95);
    --modal-border: rgba(255, 255, 255, 0.15);
    --input-bg: rgba(255, 255, 255, 0.1);
    --input-border: rgba(255, 255, 255, 0.2);
    --input-focus-bg: rgba(255, 255, 255, 0.15);
    --shadow-light: rgba(0, 0, 0, 0.15);
    --shadow-medium: rgba(0, 0, 0, 0.25);
    --shadow-strong: rgba(0, 0, 0, 0.3);
    --timeline-line-start: #64748b;
    --timeline-line-end: #475569;
}

[data-theme="light"] {
    /* Light theme */
    --bg-gradient: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 50%, #cbd5e1 100%);
    --bg-overlay-1: radial-gradient(circle at 20% 80%, rgba(59, 130, 246, 0.15) 0%, transparent 50%);
    --bg-overlay-2: radial-gradient(circle at 80% 20%, rgba(236, 72, 153, 0.1) 0%, transparent 50%);
    --bg-overlay-3: radial-gradient(circle at 40% 40%, rgba(14, 165, 233, 0.08) 0%, transparent 50%);
    --text-primary: #1e293b;
    --text-secondary: #334155;
    --text-tertiary: #475569;
    --text-muted: #64748b;
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(0, 0, 0, 0.1);
    --glass-bg-strong: rgba(255, 255, 255, 0.8);
    --glass-border-strong: rgba(0, 0, 0, 0.15);
    --modal-bg: rgba(255, 255, 255, 0.95);
    --modal-border: rgba(0, 0, 0, 0.15);
    --input-bg: rgba(255, 255, 255, 0.9);
    --input-border: rgba(0, 0, 0, 0.2);
    --input-focus-bg: rgba(255, 255, 255, 1);
    --shadow-light: rgba(0, 0, 0, 0.1);
    --shadow-medium: rgba(0, 0, 0, 0.15);
    --shadow-strong: rgba(0, 0, 0, 0.2);
    --timeline-line-start: #94a3b8;
    --timeline-line-end: #64748b;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Inter', 'Helvetica Neue', Arial, sans-serif;
    font-weight: 300;
    background: var(--bg-gradient);
    background-attachment: fixed;
    min-height: 100vh;
    padding: 20px;
    position: relative;
    transition: all 0.3s ease;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        var(--bg-overlay-1),
        var(--bg-overlay-2),
        var(--bg-overlay-3);
    pointer-events: none;
    z-index: -1;
    transition: all 0.3s ease;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
}

header {
    text-align: center;
    color: var(--text-primary);
    margin-bottom: 40px;
    padding: 20px 0;
    position: relative;
}

.theme-toggle {
    position: absolute;
    top: 20px;
    right: 20px;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 25px;
    padding: 8px 16px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 400;
}

.theme-toggle:hover {
    background: var(--glass-bg-strong);
    border-color: var(--glass-border-strong);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px var(--shadow-light);
}

.theme-icon {
    font-size: 14px;
    transition: transform 0.3s ease;
}

header h1 {
    font-size: 3.5em;
    font-weight: 200;
    margin-bottom: 15px;
    background: linear-gradient(135deg, var(--text-primary) 0%, #a8edea 50%, #fed6e3 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: none;
    letter-spacing: -0.02em;
}

[data-theme="light"] header h1 {
    background: linear-gradient(135deg, #1e293b 0%, #3b82f6 50%, #8b5cf6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}



.disclaimer {
    text-align: center;
    margin: 15px auto 0;
    max-width: 700px;
}

.disclaimer p {
    font-size: 0.75em;
    color: var(--text-muted);
    margin: 0;
    line-height: 1.4;
    font-weight: 300;
    opacity: 0.8;
}

.disclaimer strong {
    color: var(--text-muted);
    font-weight: 400;
}

.selection-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    padding: 30px;
    border-radius: 20px;
    box-shadow: 
        0 20px 40px var(--shadow-strong),
        0 0 0 1px var(--glass-border);
    display: flex;
    gap: 20px;
    align-items: flex-end;
    justify-content: center;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.country-selector {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.country-selector label {
    font-weight: 400;
    color: var(--text-primary);
}

.country-selector select {
    padding: 12px 20px;
    border: 2px solid #667eea;
    border-radius: 8px;
    font-size: 16px;
    min-width: 200px;
    cursor: pointer;
    transition: all 0.3s;
}

.country-selector select:hover {
    border-color: #764ba2;
}

.btn-primary {
    padding: 14px 32px;
    background: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 400;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.4);
    background: linear-gradient(135deg, #2563eb 0%, #7c3aed 100%);
}

.btn-primary:active {
    transform: translateY(0);
}



.btn-reset {
    padding: 14px 32px;
    background: linear-gradient(135deg, #6b7280 0%, #9ca3af 100%);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 400;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(107, 114, 128, 0.3);
}

.btn-reset:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(107, 114, 128, 0.4);
    background: linear-gradient(135deg, #4b5563 0%, #6b7280 100%);
}

.btn-reset:active {
    transform: translateY(0);
}

.map-container {
    background: var(--glass-bg-strong);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border-strong);
    padding: 30px;
    border-radius: 20px;
    box-shadow: 
        0 20px 40px var(--shadow-strong),
        0 0 0 1px var(--glass-border);
    margin-bottom: 30px;
}

.map-instruction {
    text-align: center;
    margin-bottom: 20px;
}

.map-instruction p {
    margin: 0;
    font-size: 1.1em;
    font-weight: 500;
    color: var(--text-primary);
    line-height: 1.4;
    opacity: 0.9;
}

#worldMap {
    width: 100%;
    height: 600px;
    border-radius: 10px;
    overflow: hidden;
}

.country-boundary {
    cursor: pointer;
    transition: all 0.3s ease;
}

.country-boundary:hover {
    opacity: 0.8;
}

.country-tooltip {
    background: rgba(0, 0, 0, 0.8) !important;
    color: white !important;
    border: none !important;
    border-radius: 8px !important;
    padding: 8px 12px !important;
    font-size: 14px !important;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3) !important;
}

.country-modal, .generation-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    opacity: 0;
    animation: modalFadeIn 0.3s ease-out forwards;
}

.modal-content {
    background: var(--modal-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--modal-border);
    padding: 35px;
    border-radius: 20px;
    box-shadow: 0 20px 40px var(--shadow-strong);
    text-align: center;
    min-width: 420px;
    transform: rotateY(-90deg) scale(0.8);
    animation: modalFlipIn 0.6s ease-out forwards;
    transform-style: preserve-3d;
    perspective: 1000px;
}

/* Modal animations */
@keyframes modalFadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes modalFlipIn {
    0% {
        transform: rotateY(-90deg) scale(0.8);
        opacity: 0;
    }
    50% {
        transform: rotateY(-45deg) scale(0.9);
        opacity: 0.5;
    }
    80% {
        transform: rotateY(5deg) scale(1.02);
        opacity: 0.9;
    }
    100% {
        transform: rotateY(0deg) scale(1);
        opacity: 1;
    }
}

@keyframes modalFlipOut {
    0% {
        transform: rotateY(0deg) scale(1);
        opacity: 1;
    }
    50% {
        transform: rotateY(45deg) scale(0.9);
        opacity: 0.5;
    }
    100% {
        transform: rotateY(90deg) scale(0.8);
        opacity: 0;
    }
}

@keyframes modalFadeOut {
    from {
        opacity: 1;
    }
    to {
        opacity: 0;
    }
}

.modal-closing .modal-content {
    animation: modalFlipOut 0.4s ease-in forwards;
}

.modal-closing {
    animation: modalFadeOut 0.4s ease-in forwards;
}

.modal-content h3 {
    margin-bottom: 18px;
    font-size: 1.6em;
    color: var(--text-primary);
    font-weight: 300;
}

.modal-content p {
    margin-bottom: 25px;
    color: var(--text-tertiary);
    font-weight: 300;
}

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

.btn-group-a, .btn-group-b, .btn-cancel {
    padding: 12px 20px;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 400;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-group-a {
    background: #2196F3;
    color: white;
}

.btn-group-a:hover {
    background: #1976D2;
}

.btn-group-a.active {
    background: #1565C0;
}

.btn-group-b {
    background: #F44336;
    color: white;
}

.btn-group-b:hover {
    background: #D32F2F;
}

.btn-group-b.active {
    background: #C62828;
}

.btn-cancel {
    background: #757575;
    color: white;
}

.btn-cancel:hover {
    background: #616161;
}

.group-count {
    font-size: 0.9em;
    opacity: 0.8;
}

.generation-settings {
    margin: 25px 0;
}

.setting-group {
    margin-bottom: 20px;
    text-align: left;
}

.setting-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-primary);
    font-weight: 400;
    font-size: 14px;
}

.setting-group input[type="number"] {
    width: 100%;
    padding: 10px 15px;
    border: 2px solid var(--input-border);
    border-radius: 8px;
    background: var(--input-bg);
    color: var(--text-primary);
    font-size: 16px;
    font-weight: 400;
    transition: all 0.3s ease;
}

.setting-group input[type="number"]:focus {
    outline: none;
    border-color: #667eea;
    background: var(--input-focus-bg);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.2);
}

.setting-group small {
    display: block;
    margin-top: 5px;
    color: var(--text-muted);
    font-size: 12px;
}

.btn-accept {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: white;
    border: none;
    border-radius: 8px;
    padding: 12px 24px;
    font-size: 16px;
    font-weight: 400;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-right: 10px;
}

.btn-accept:hover {
    background: linear-gradient(135deg, #059669 0%, #047857 100%);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

.selection-display {
    background: var(--glass-bg-strong);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border-strong);
    padding: 20px;
    border-radius: 16px;
    margin-bottom: 25px;
    box-shadow: 
        0 10px 30px var(--shadow-medium),
        0 0 0 1px var(--glass-border);
    position: relative;
}

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

.groups-display {
    flex: 1;
}

.group-display {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
}

.group-title {
    font-size: 0.9em;
    font-weight: 500;
    min-width: 60px;
}

.group-countries {
    color: var(--text-tertiary);
    font-weight: 300;
    font-size: 0.85em;
    line-height: 1.3;
}

.control-icons-minimal {
    display: flex;
    gap: 6px;
    align-items: flex-start;
}

.control-icon-minimal {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    color: var(--text-secondary);
}

.control-icon-minimal:hover {
    background: var(--glass-bg-strong);
    border-color: var(--glass-border-strong);
    transform: translateY(-1px);
    box-shadow: 0 2px 8px var(--shadow-light);
}

.control-icon-minimal.active {
    background: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
    border-color: #3b82f6;
    color: white;
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.3);
}

.control-icon-minimal i {
    font-size: 12px;
    line-height: 1;
}

.action-buttons-minimal {
    display: flex;
    gap: 10px;
    align-items: center;
    justify-content: center;
    margin-bottom: 10px;
}

.btn-primary-small {
    padding: 10px 20px;
    background: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 400;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 2px 10px rgba(59, 130, 246, 0.3);
}

.btn-primary-small:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
    background: linear-gradient(135deg, #2563eb 0%, #7c3aed 100%);
}



.group-a-title {
    color: #2196F3;
}

.group-b-title {
    color: #F44336;
}

/* Light mode overrides for better contrast */
[data-theme="light"] .group-a-title {
    color: #1565C0;
}

[data-theme="light"] .group-b-title {
    color: #C62828;
}

.timeline-title-groups {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    margin-bottom: 20px;
}

.group-title {
    font-size: 1.2em;
    font-weight: 400;
    padding: 10px 20px;
    border-radius: 25px;
    color: white;
}

.group-title.group-a {
    background: #2196F3;
}

.group-title.group-b {
    background: #F44336;
}

.vs-divider {
    font-size: 1.5em;
    font-weight: 300;
    color: #667eea;
}

.year-range-display {
    text-align: center;
    margin-top: 10px;
}

.year-range-label {
    font-size: 1em;
    font-weight: 300;
    color: var(--text-muted);
    background: var(--glass-bg);
    padding: 8px 16px;
    border-radius: 20px;
    border: 1px solid var(--glass-border);
}

.group-a-event {
    border-left-color: #2196F3 !important;
}

.group-b-event {
    border-left-color: #F44336 !important;
}

.event-marker.group-a-event {
    border-color: #2196F3 !important;
}

.event-marker.group-b-event {
    border-color: #F44336 !important;
}

.leaflet-popup-content-wrapper {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 10px;
    font-weight: 400;
}

.leaflet-popup-tip {
    background: #764ba2;
}

.timeline-container {
    background: var(--glass-bg-strong);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border-strong);
    padding: 40px;
    border-radius: 20px;
    box-shadow: 
        0 20px 40px var(--shadow-strong),
        0 0 0 1px var(--glass-border);
}

.timeline-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
    flex-wrap: wrap;
    gap: 20px;
}

.timeline-container h2 {
    color: var(--text-primary);
    font-size: 2em;
    font-weight: 300;
    margin: 0;
    flex: 1;
    text-align: center;
}

.timeline-direction-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 25px;
    color: var(--text-tertiary);
    font-size: 14px;
    font-weight: 300;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.timeline-direction-btn:hover {
    background: var(--glass-bg-strong);
    border-color: var(--glass-border-strong);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px var(--shadow-medium);
}

#directionArrow {
    font-size: 18px;
    font-weight: bold;
    transition: transform 0.3s ease;
}

#directionLabel {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.timeline {
    position: relative;
    padding: 20px 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 100%;
    background: linear-gradient(180deg, var(--timeline-line-start) 0%, var(--timeline-line-end) 100%);
    border-radius: 1px;
    opacity: 0.4;
}

.timeline-event {
    display: flex;
    margin-bottom: 35px;
    position: relative;
}

.timeline-event.left-side {
    flex-direction: row;
}

.timeline-event.right-side {
    flex-direction: row-reverse;
}

.decade-separator {
    position: relative;
    min-height: 80px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    margin: 40px 0;
    gap: 8px;
}

.decade-separator::before {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    top: 50%;
    height: 2px;
    background: linear-gradient(90deg, transparent 0%, var(--timeline-line-start) 20%, var(--timeline-line-end) 50%, var(--timeline-line-start) 80%, transparent 100%);
    z-index: 0;
    opacity: 0.6;
}

.decade-label {
    position: relative;
    z-index: 1;
    background: white;
    padding: 10px 30px;
    border-radius: 25px;
    font-size: 1.3em;
    font-weight: 300;
    color: #667eea;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
    border: 3px solid #667eea;
    margin-bottom: 8px;
}

[data-theme="light"] .decade-label {
    background: var(--text-primary);
    color: white;
    border-color: var(--text-primary);
}

.generation-context {
    position: relative;
    z-index: 1;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    padding: 6px 20px;
    border-radius: 20px;
    font-size: 0.9em;
    font-weight: 300;
    color: var(--text-tertiary);
    border: 1px solid var(--glass-border);
    font-style: italic;
    text-shadow: 0 1px 2px var(--shadow-light);
}

.generation-context.clickable {
    cursor: pointer;
    transition: all 0.3s ease;
}

.generation-context.clickable:hover {
    background: var(--glass-bg-strong);
    border-color: var(--glass-border-strong);
    transform: translateY(-1px);
    box-shadow: 0 2px 8px var(--shadow-medium);
}

.generation-context {
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.generation-context.fade-out {
    opacity: 0.3;
    transform: scale(0.95);
}

.event-content {
    width: 45%;
    padding: 16px 18px;
    background: var(--glass-bg-strong);
    backdrop-filter: blur(12px);
    border-radius: 12px;
    border: 1px solid var(--glass-border-strong);
    box-shadow: 0 4px 20px var(--shadow-light);
    transition: all 0.3s ease;
    position: relative;
    min-height: auto;
}

.event-content[class*="event-"] {
    border-left: 5px solid;
}

/* North America */
.event-content.event-usa {
    background: linear-gradient(135deg, rgba(178, 34, 52, 0.35) 0%, rgba(60, 59, 110, 0.45) 100%);
    border-left-color: #B22234;
    color: #f8fafc;
}

[data-theme="light"] .event-content.event-usa {
    background: linear-gradient(135deg, rgba(178, 34, 52, 0.15) 0%, rgba(60, 59, 110, 0.2) 100%);
    color: var(--text-primary);
}

[data-theme="light"] .event-content.event-canada {
    background: linear-gradient(135deg, rgba(255, 0, 0, 0.15) 0%, rgba(255, 255, 255, 0.1) 100%);
    color: var(--text-primary);
}

[data-theme="light"] .event-content.event-mexico {
    background: linear-gradient(135deg, rgba(0, 104, 71, 0.2) 0%, rgba(206, 17, 38, 0.15) 50%, rgba(255, 255, 255, 0.1) 100%);
    color: var(--text-primary);
}

[data-theme="light"] .event-content.event-brazil {
    background: linear-gradient(135deg, rgba(0, 156, 59, 0.2) 0%, rgba(255, 223, 0, 0.25) 50%, rgba(0, 39, 118, 0.15) 100%);
    color: var(--text-primary);
}

[data-theme="light"] .event-content.event-argentina {
    background: linear-gradient(135deg, rgba(116, 172, 223, 0.25) 0%, rgba(255, 255, 255, 0.1) 50%, rgba(116, 172, 223, 0.25) 100%);
    color: var(--text-primary);
}

[data-theme="light"] .event-content.event-uk {
    background: linear-gradient(135deg, rgba(1, 33, 105, 0.2) 0%, rgba(255, 255, 255, 0.1) 50%, rgba(200, 16, 46, 0.15) 100%);
    color: var(--text-primary);
}

[data-theme="light"] .event-content.event-france {
    background: linear-gradient(135deg, rgba(0, 35, 149, 0.2) 0%, rgba(255, 255, 255, 0.1) 50%, rgba(237, 41, 57, 0.15) 100%);
    color: var(--text-primary);
}

[data-theme="light"] .event-content.event-germany {
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.25) 0%, rgba(221, 0, 0, 0.2) 50%, rgba(255, 206, 0, 0.25) 100%);
    color: var(--text-primary);
}

[data-theme="light"] .event-content.event-russia {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.15) 0%, rgba(0, 57, 166, 0.2) 50%, rgba(213, 43, 30, 0.2) 100%);
    color: var(--text-primary);
}

[data-theme="light"] .event-content.event-italy {
    background: linear-gradient(135deg, rgba(0, 146, 70, 0.2) 0%, rgba(255, 255, 255, 0.1) 50%, rgba(206, 43, 55, 0.2) 100%);
    color: var(--text-primary);
}

[data-theme="light"] .event-content.event-spain {
    background: linear-gradient(135deg, rgba(170, 20, 47, 0.25) 0%, rgba(255, 196, 0, 0.2) 50%, rgba(170, 20, 47, 0.25) 100%);
    color: var(--text-primary);
}

[data-theme="light"] .event-content.event-norway {
    background: linear-gradient(135deg, rgba(186, 12, 47, 0.25) 0%, rgba(255, 255, 255, 0.1) 50%, rgba(0, 32, 91, 0.2) 100%);
    color: var(--text-primary);
}

[data-theme="light"] .event-content.event-hungary {
    background: linear-gradient(135deg, rgba(205, 42, 62, 0.25) 0%, rgba(255, 255, 255, 0.1) 50%, rgba(71, 112, 80, 0.2) 100%);
    color: var(--text-primary);
}

[data-theme="light"] .event-content.event-turkey {
    background: linear-gradient(135deg, rgba(227, 10, 23, 0.25) 0%, rgba(255, 255, 255, 0.1) 100%);
    color: var(--text-primary);
}

[data-theme="light"] .event-content.event-china {
    background: linear-gradient(135deg, rgba(222, 41, 16, 0.25) 0%, rgba(255, 255, 0, 0.15) 100%);
    color: var(--text-primary);
}

[data-theme="light"] .event-content.event-india {
    background: linear-gradient(135deg, rgba(255, 153, 51, 0.2) 0%, rgba(255, 255, 255, 0.1) 50%, rgba(19, 136, 8, 0.2) 100%);
    color: var(--text-primary);
}

[data-theme="light"] .event-content.event-japan {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.15) 0%, rgba(188, 0, 45, 0.2) 100%);
    color: var(--text-primary);
}

[data-theme="light"] .event-content.event-iran {
    background: linear-gradient(135deg, rgba(0, 153, 0, 0.2) 0%, rgba(255, 255, 255, 0.1) 50%, rgba(221, 0, 0, 0.2) 100%);
    color: var(--text-primary);
}

[data-theme="light"] .event-content.event-saudi_arabia {
    background: linear-gradient(135deg, rgba(0, 102, 51, 0.25) 0%, rgba(255, 255, 255, 0.1) 100%);
    color: var(--text-primary);
}

[data-theme="light"] .event-content.event-south_korea {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.15) 0%, rgba(205, 17, 38, 0.2) 25%, rgba(0, 71, 160, 0.2) 75%, rgba(255, 255, 255, 0.15) 100%);
    color: var(--text-primary);
}

[data-theme="light"] .event-content.event-indonesia {
    background: linear-gradient(135deg, rgba(255, 0, 0, 0.25) 0%, rgba(255, 255, 255, 0.1) 100%);
    color: var(--text-primary);
}

[data-theme="light"] .event-content.event-egypt {
    background: linear-gradient(135deg, rgba(206, 17, 38, 0.2) 0%, rgba(255, 255, 255, 0.1) 50%, rgba(0, 0, 0, 0.25) 100%);
    color: var(--text-primary);
}

[data-theme="light"] .event-content.event-morocco {
    background: linear-gradient(135deg, rgba(196, 10, 54, 0.25) 0%, rgba(0, 98, 51, 0.15) 100%);
    color: var(--text-primary);
}

[data-theme="light"] .event-content.event-south_africa {
    background: linear-gradient(135deg, rgba(0, 119, 73, 0.2) 0%, rgba(255, 184, 28, 0.15) 25%, rgba(0, 0, 0, 0.2) 50%, rgba(0, 87, 183, 0.15) 75%, rgba(224, 60, 49, 0.2) 100%);
    color: var(--text-primary);
}

[data-theme="light"] .event-content.event-nigeria {
    background: linear-gradient(135deg, rgba(0, 135, 81, 0.25) 0%, rgba(255, 255, 255, 0.1) 100%);
    color: var(--text-primary);
}

[data-theme="light"] .event-content.event-australia {
    background: linear-gradient(135deg, rgba(0, 0, 139, 0.2) 0%, rgba(255, 255, 255, 0.1) 50%, rgba(255, 0, 0, 0.15) 100%);
    color: var(--text-primary);
}

.event-content.event-canada {
    background: linear-gradient(135deg, rgba(255, 0, 0, 0.35) 0%, rgba(255, 255, 255, 0.3) 100%);
    border-left-color: #FF0000;
    color: #f8fafc;
}

.event-content.event-mexico {
    background: linear-gradient(135deg, rgba(0, 104, 71, 0.4) 0%, rgba(206, 17, 38, 0.35) 50%, rgba(255, 255, 255, 0.3) 100%);
    border-left-color: #006847;
    color: #f8fafc;
}

/* South America */
.event-content.event-brazil {
    background: linear-gradient(135deg, rgba(0, 156, 59, 0.4) 0%, rgba(255, 223, 0, 0.45) 50%, rgba(0, 39, 118, 0.35) 100%);
    border-left-color: #009C3B;
    color: #f8fafc;
}

.event-content.event-argentina {
    background: linear-gradient(135deg, rgba(116, 172, 223, 0.45) 0%, rgba(255, 255, 255, 0.3) 50%, rgba(116, 172, 223, 0.45) 100%);
    border-left-color: #74ACDF;
    color: #f8fafc;
}

/* Europe */
.event-content.event-uk {
    background: linear-gradient(135deg, rgba(1, 33, 105, 0.4) 0%, rgba(255, 255, 255, 0.3) 50%, rgba(200, 16, 46, 0.35) 100%);
    border-left-color: #012169;
    color: #f8fafc;
}

.event-content.event-france {
    background: linear-gradient(135deg, rgba(0, 35, 149, 0.4) 0%, rgba(255, 255, 255, 0.3) 50%, rgba(237, 41, 57, 0.35) 100%);
    border-left-color: #002395;
    color: #f8fafc;
}

.event-content.event-germany {
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.5) 0%, rgba(221, 0, 0, 0.4) 50%, rgba(255, 206, 0, 0.45) 100%);
    border-left-color: #000000;
    color: #f8fafc;
}

.event-content.event-russia {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.35) 0%, rgba(0, 57, 166, 0.4) 50%, rgba(213, 43, 30, 0.4) 100%);
    border-left-color: #0039A6;
    color: #f8fafc;
}

.event-content.event-italy {
    background: linear-gradient(135deg, rgba(0, 146, 70, 0.4) 0%, rgba(255, 255, 255, 0.3) 50%, rgba(206, 43, 55, 0.4) 100%);
    border-left-color: #009246;
    color: #f8fafc;
}

.event-content.event-spain {
    background: linear-gradient(135deg, rgba(170, 20, 47, 0.45) 0%, rgba(255, 196, 0, 0.4) 50%, rgba(170, 20, 47, 0.45) 100%);
    border-left-color: #AA142F;
    color: #f8fafc;
}

/* Norway flag colors: Red, white, and blue Nordic cross */
.event-content.event-norway {
    background: linear-gradient(135deg, rgba(186, 12, 47, 0.45) 0%, rgba(255, 255, 255, 0.3) 50%, rgba(0, 32, 91, 0.4) 100%);
    border-left-color: #BA0C2F;
    color: #f8fafc;
}

/* Hungary flag colors: Red, white, and green horizontal stripes */
.event-content.event-hungary {
    background: linear-gradient(135deg, rgba(205, 42, 62, 0.45) 0%, rgba(255, 255, 255, 0.3) 50%, rgba(71, 112, 80, 0.4) 100%);
    border-left-color: #CD2A3E;
    color: #f8fafc;
}

.event-content.event-turkey {
    background: linear-gradient(135deg, rgba(227, 10, 23, 0.45) 0%, rgba(255, 255, 255, 0.3) 100%);
    border-left-color: #E30A17;
    color: #f8fafc;
}

/* Asia */
.event-content.event-china {
    background: linear-gradient(135deg, rgba(222, 41, 16, 0.45) 0%, rgba(255, 255, 0, 0.35) 100%);
    border-left-color: #DE2910;
    color: #f8fafc;
}

.event-content.event-india {
    background: linear-gradient(135deg, rgba(255, 153, 51, 0.4) 0%, rgba(255, 255, 255, 0.3) 50%, rgba(19, 136, 8, 0.4) 100%);
    border-left-color: #FF9933;
    color: #f8fafc;
}

.event-content.event-japan {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.35) 0%, rgba(188, 0, 45, 0.4) 100%);
    border-left-color: #BC002D;
    color: #f8fafc;
}

.event-content.event-iran {
    background: linear-gradient(135deg, rgba(0, 153, 0, 0.4) 0%, rgba(255, 255, 255, 0.3) 50%, rgba(221, 0, 0, 0.4) 100%);
    border-left-color: #009900;
    color: #f8fafc;
}

.event-content.event-saudi_arabia {
    background: linear-gradient(135deg, rgba(0, 102, 51, 0.45) 0%, rgba(255, 255, 255, 0.3) 100%);
    border-left-color: #006633;
    color: #f8fafc;
}

.event-content.event-south_korea {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.35) 0%, rgba(205, 17, 38, 0.4) 25%, rgba(0, 71, 160, 0.4) 75%, rgba(255, 255, 255, 0.35) 100%);
    border-left-color: #CD1126;
    color: #f8fafc;
}

.event-content.event-indonesia {
    background: linear-gradient(135deg, rgba(255, 0, 0, 0.45) 0%, rgba(255, 255, 255, 0.3) 100%);
    border-left-color: #FF0000;
    color: #f8fafc;
}

/* 
 * IMPORTANT: Country Timeline Card Colors
 * 
 * When adding new countries, you MUST add corresponding CSS styles here that reflect
 * the colors of each country's flag. This ensures visual consistency and helps users
 * quickly identify events from different countries in the timeline.
 * 
 * For each new country, add TWO CSS rules:
 * 1. .event-content.event-{country_code} - Sets the background gradient and border-left-color
 * 2. .event-marker.event-{country_code} - Sets the timeline marker border color
 * 
 * Use the country's flag colors in the gradient background and primary flag color 
 * for border-left-color and marker border-color.
 * 
 * Example for a new country:
 * .event-content.event-newcountry {
 *     background: linear-gradient(135deg, rgba(flag-color-1, 0.45) 0%, rgba(flag-color-2, 0.35) 100%);
 *     border-left-color: #PRIMARY_FLAG_COLOR;
 *     color: #f8fafc;
 * }
 * .event-marker.event-newcountry { border-color: #PRIMARY_FLAG_COLOR; }
 */

/* Africa */
.event-content.event-egypt {
    background: linear-gradient(135deg, rgba(206, 17, 38, 0.4) 0%, rgba(255, 255, 255, 0.3) 50%, rgba(0, 0, 0, 0.45) 100%);
    border-left-color: #CE1126;
    color: #f8fafc;
}

/* Morocco flag colors: Red background with green pentagram */
.event-content.event-morocco {
    background: linear-gradient(135deg, rgba(196, 10, 54, 0.45) 0%, rgba(0, 98, 51, 0.35) 100%);
    border-left-color: #C40A36;
    color: #f8fafc;
}

.event-content.event-south_africa {
    background: linear-gradient(135deg, rgba(0, 119, 73, 0.4) 0%, rgba(255, 184, 28, 0.35) 25%, rgba(0, 0, 0, 0.4) 50%, rgba(0, 87, 183, 0.35) 75%, rgba(224, 60, 49, 0.4) 100%);
    border-left-color: #007749;
    color: #f8fafc;
}

.event-content.event-nigeria {
    background: linear-gradient(135deg, rgba(0, 135, 81, 0.45) 0%, rgba(255, 255, 255, 0.3) 100%);
    border-left-color: #008751;
    color: #f8fafc;
}

/* Oceania */
.event-content.event-australia {
    background: linear-gradient(135deg, rgba(0, 0, 139, 0.4) 0%, rgba(255, 255, 255, 0.3) 50%, rgba(255, 0, 0, 0.35) 100%);
    border-left-color: #00008B;
    color: #f8fafc;
}

.event-content:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px var(--shadow-medium);
    border-color: var(--glass-border-strong);
}

.country-label {
    display: inline-block;
    font-size: 0.8em;
    font-weight: 400;
    padding: 4px 10px;
    border-radius: 16px;
    margin-bottom: 8px;
    background: var(--glass-bg);
    backdrop-filter: blur(8px);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
    text-shadow: 0 1px 2px var(--shadow-light);
    letter-spacing: 0.3px;
}

.event-year {
    font-size: 1.3em;
    font-weight: 300;
    color: var(--text-primary);
    margin-bottom: 6px;
    text-shadow: 0 1px 2px var(--shadow-light);
    letter-spacing: -0.5px;
}

.event-title {
    font-size: 1.1em;
    font-weight: 400;
    color: var(--text-primary);
    margin-bottom: 6px;
    text-shadow: 0 1px 2px var(--shadow-light);
    line-height: 1.3;
}

.event-description {
    color: var(--text-tertiary);
    line-height: 1.5;
    font-size: 0.95em;
    text-shadow: 0 1px 2px var(--shadow-light);
    opacity: 0.9;
}

.event-marker {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 16px;
    height: 16px;
    background: white;
    border: 3px solid #667eea;
    border-radius: 50%;
    z-index: 1;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.event-marker[class*="event-"] {
    background: white;
}

.event-marker.event-usa { border-color: #B22234; }
.event-marker.event-canada { border-color: #FF0000; }
.event-marker.event-mexico { border-color: #006847; }
.event-marker.event-brazil { border-color: #009C3B; }
.event-marker.event-argentina { border-color: #74ACDF; }
.event-marker.event-uk { border-color: #012169; }
.event-marker.event-france { border-color: #002395; }
.event-marker.event-germany { border-color: #000000; }
.event-marker.event-italy { border-color: #009246; }
.event-marker.event-spain { border-color: #AA142F; }
.event-marker.event-russia { border-color: #0039A6; }
.event-marker.event-turkey { border-color: #E30A17; }
.event-marker.event-china { border-color: #DE2910; }
.event-marker.event-india { border-color: #FF9933; }
.event-marker.event-japan { border-color: #BC002D; }
.event-marker.event-iran { border-color: #009900; }
.event-marker.event-saudi_arabia { border-color: #006633; }
.event-marker.event-south_korea { border-color: #CD1126; }
.event-marker.event-indonesia { border-color: #FF0000; }
.event-marker.event-egypt { border-color: #CE1126; }
.event-marker.event-morocco { border-color: #C40A36; }
.event-marker.event-south_africa { border-color: #007749; }
.event-marker.event-nigeria { border-color: #008751; }
.event-marker.event-norway { border-color: #BA0C2F; }
.event-marker.event-hungary { border-color: #CD2A3E; }
.event-marker.event-australia { border-color: #00008B; }

@media (max-width: 768px) {
    header {
        position: relative;
        padding-top: 60px;
    }
    
    .theme-toggle {
        position: absolute;
        top: 10px;
        right: 10px;
        padding: 6px 12px;
        font-size: 12px;
    }
    
    .theme-icon {
        font-size: 12px;
    }
    
    header h1 {
        font-size: 2em;
    }
    
    .selection-panel {
        flex-direction: column;
        align-items: stretch;
        padding: 20px;
    }
    
    .selection-display {
        padding: 15px;
    }
    
    .selection-header {
        flex-direction: column;
        gap: 10px;
        align-items: stretch;
    }
    
    .control-icons-minimal {
        align-self: flex-end;
    }
    
    .group-display {
        flex-direction: column;
        align-items: flex-start;
        gap: 4px;
        margin-bottom: 10px;
    }
    
    .group-title {
        font-size: 0.8em;
        min-width: auto;
    }
    
    .group-countries {
        font-size: 0.8em;
    }
    
    .action-buttons-minimal {
        gap: 8px;
        flex-wrap: wrap;
    }
    
    .btn-primary-small {
        padding: 8px 16px;
        font-size: 13px;
    }
    
    .control-icon-minimal {
        width: 26px;
        height: 26px;
    }
    
    .control-icon-minimal i {
        font-size: 10px;
    }
    
    .panel-content {
        padding: 15px;
    }
    
    .map-container {
        padding: 20px;
    }
    
    .map-instruction {
        margin-bottom: 15px;
    }
    
    .map-instruction p {
        font-size: 1em;
    }
    
    .timeline-header {
        flex-direction: column;
        text-align: center;
        gap: 15px;
    }
    
    .timeline-container h2 {
        text-align: center;
    }
    
    .timeline-direction-btn {
        align-self: center;
    }
    
    .timeline::before {
        left: 20px;
        width: 2px;
    }
    
    .timeline-event {
        flex-direction: column !important;
        padding-left: 45px;
        margin-bottom: 25px;
    }
    
    .event-content {
        width: 100%;
        padding: 12px 16px;
    }
    
    .event-marker {
        left: 20px;
        width: 12px;
        height: 12px;
        border-width: 2px;
    }
    
    .event-year {
        font-size: 1.2em;
        margin-bottom: 4px;
    }
    
    .event-title {
        font-size: 1em;
        margin-bottom: 4px;
    }
    
    .event-description {
        font-size: 0.9em;
    }
    
    .disclaimer {
        margin: 10px 15px 0;
    }
    
    .disclaimer p {
        font-size: 0.7em;
    }
    
    .footer {
        padding: 20px 15px;
        margin-top: 30px;
    }
    
    .footer p {
        font-size: 0.8em;
    }
    
    .flag-marker {
        width: 28px;
        height: 28px;
    }
    
    .flag-emoji {
        font-size: 16px;
    }
    
    .modal-content {
        min-width: 320px;
        margin: 20px;
        padding: 25px;
    }
    
    /* Reduce animation intensity on mobile for better performance */
    @keyframes modalFlipIn {
        0% {
            transform: rotateY(-45deg) scale(0.9);
            opacity: 0;
        }
        100% {
            transform: rotateY(0deg) scale(1);
            opacity: 1;
        }
    }
    
    @keyframes modalFlipOut {
        0% {
            transform: rotateY(0deg) scale(1);
            opacity: 1;
        }
        100% {
            transform: rotateY(45deg) scale(0.9);
            opacity: 0;
        }
    }
}
/* Collapsible Panels */
.collapsible-panel {
    margin-top: 15px;
    overflow: hidden;
    transition: all 0.3s ease;
    opacity: 0;
    transform: translateY(-10px);
}

.collapsible-panel.show {
    opacity: 1;
    transform: translateY(0);
}

.panel-content {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 20px;
    box-shadow: 0 8px 25px var(--shadow-light);
}

.settings-section {
    margin: 0;
}

.settings-section h4 {
    margin-bottom: 15px;
    color: var(--text-primary);
    font-size: 1.1em;
    font-weight: 400;
}

/* Year Range Filter Styles */
.year-range-filter {
    margin: 0 0 20px 0;
}

.year-range-filter h4 {
    margin-bottom: 15px;
    color: var(--text-primary);
    font-size: 1.1em;
    font-weight: 400;
}

.year-inputs {
    display: flex;
    gap: 20px;
    align-items: center;
    flex-wrap: wrap;
}

.year-input-group {
    display: flex;
    align-items: center;
    gap: 8px;
}

.year-input-group label {
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 300;
    min-width: 40px;
}

.year-input-group input[type="number"] {
    width: 80px;
    padding: 8px 12px;
    border: 2px solid var(--input-border);
    border-radius: 8px;
    background: var(--input-bg);
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 400;
    transition: all 0.3s ease;
}

#userAge {
    width: 70px;
}

.year-input-group input[type="number"]:focus {
    outline: none;
    border-color: #667eea;
    background: var(--input-focus-bg);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.2);
}

.year-input-group input[type="number"]::-webkit-outer-spin-button,
.year-input-group input[type="number"]::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.year-input-group input[type="number"] {
    -moz-appearance: textfield;
    appearance: textfield;
}

.year-range-info {
    margin-top: 10px;
}

.year-range-info small {
    color: var(--text-muted);
    font-size: 12px;
}

@media (max-width: 768px) {
    .year-inputs {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }
    
    .year-input-group {
        width: 100%;
        justify-content: space-between;
    }
    
    .year-input-group input[type="number"] {
        width: 100px;
    }
}

/* Category Filter Styles */
.category-filters {
    margin: 0;
}

.category-filters h4 {
    margin-bottom: 15px;
    color: var(--text-primary);
    font-size: 1.1em;
    font-weight: 400;
}

.category-checkboxes {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
}

.category-checkbox {
    display: flex;
    align-items: center;
    cursor: pointer;
    font-size: 14px;
    font-weight: 300;
    color: var(--text-secondary);
    user-select: none;
}

.category-checkbox input[type="checkbox"] {
    display: none;
}

.checkmark {
    width: 20px;
    height: 20px;
    border: 2px solid var(--input-border);
    border-radius: 6px;
    margin-right: 10px;
    position: relative;
    transition: all 0.3s ease;
    background: var(--glass-bg);
}

.checkmark::after {
    content: '';
    position: absolute;
    left: 6px;
    top: 2px;
    width: 6px;
    height: 10px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
    opacity: 0;
    transition: opacity 0.3s ease;
}

[data-theme="light"] .checkmark::after {
    border-color: white;
}

/* Light mode text overrides for better readability */
[data-theme="light"] .event-year,
[data-theme="light"] .event-title {
    color: var(--text-primary);
}

[data-theme="light"] .event-description {
    color: var(--text-tertiary);
}

[data-theme="light"] .country-label {
    background: var(--glass-bg);
    color: var(--text-primary);
}

.category-checkbox input[type="checkbox"]:checked + .checkmark::after {
    opacity: 1;
}

.category-checkbox input[type="checkbox"]:checked + .checkmark.political {
    background-color: #dc3545;
    border-color: #dc3545;
}

.category-checkbox input[type="checkbox"]:checked + .checkmark.scientific {
    background-color: #007bff;
    border-color: #007bff;
}

.category-checkbox input[type="checkbox"]:checked + .checkmark.sport {
    background-color: #28a745;
    border-color: #28a745;
}

.category-checkbox input[type="checkbox"]:checked + .checkmark.literature-and-art {
    background-color: #9b59b6;
    border-color: #9b59b6;
}

.category-checkbox input[type="checkbox"]:checked + .checkmark.other {
    background-color: #6c757d;
    border-color: #6c757d;
}

.category-checkbox:hover .checkmark {
    border-color: var(--glass-border-strong);
    background: var(--glass-bg-strong);
}

/* Impact filter styles */
.impact-filters {
    margin-bottom: 20px;
}

.impact-checkboxes {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
}

.impact-checkbox {
    display: flex;
    align-items: center;
    cursor: pointer;
    font-size: 0.9em;
    color: var(--text-secondary);
    gap: 8px;
}

.impact-checkbox input[type="checkbox"] {
    display: none;
}

.impact-checkbox input[type="checkbox"]:checked + .checkmark.major {
    background-color: #ff6b35;
    border-color: #ff6b35;
}

.impact-checkbox input[type="checkbox"]:checked + .checkmark.moderate {
    background-color: #4ecdc4;
    border-color: #4ecdc4;
}

.impact-checkbox:hover .checkmark {
    border-color: var(--glass-border-strong);
    background: var(--glass-bg-strong);
}

/* Event category indicators */
.event-categories {
    display: flex;
    gap: 4px;
    margin-bottom: 6px;
    flex-wrap: wrap;
}

.category-tag {
    font-size: 0.7em;
    padding: 2px 6px;
    border-radius: 8px;
    color: white;
    font-weight: 300;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    opacity: 0.9;
}

.category-tag.political {
    background-color: #dc3545;
}

.category-tag.scientific {
    background-color: #007bff;
}

.category-tag.sport {
    background-color: #28a745;
}

.category-tag.literature-and-art {
    background-color: #9b59b6;
}

.category-tag.other {
    background-color: #6c757d;
}

@media (max-width: 768px) {
    .category-checkboxes {
        flex-direction: column;
        gap: 10px;
    }
    
    .impact-checkboxes {
        flex-direction: column;
        gap: 10px;
    }
}

/* Flag Marker Styles */
.custom-flag-marker {
    background: transparent !important;
    border: none !important;
}

.flag-marker {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: var(--glass-bg-strong);
    backdrop-filter: blur(10px);
    border: 2px solid var(--glass-border-strong);
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px var(--shadow-light);
}

.flag-marker:hover {
    transform: scale(1.2);
    background: var(--glass-bg);
    border-color: var(--glass-border);
    box-shadow: 0 4px 15px var(--shadow-medium);
}

.flag-marker.selected-a {
    border-color: #2196F3;
    background: rgba(33, 150, 243, 0.2);
    box-shadow: 0 0 0 2px rgba(33, 150, 243, 0.3);
}

.flag-marker.selected-b {
    border-color: #F44336;
    background: rgba(244, 67, 54, 0.2);
    box-shadow: 0 0 0 2px rgba(244, 67, 54, 0.3);
}

.flag-marker.selected-both {
    border-color: #9C27B0;
    background: rgba(156, 39, 176, 0.2);
    box-shadow: 0 0 0 2px rgba(156, 39, 176, 0.3);
}

.flag-emoji {
    font-size: 18px;
    line-height: 1;
    filter: drop-shadow(0 1px 2px var(--shadow-light));
}

/* Footer Styles */
.footer {
    text-align: center;
    padding: 30px 20px;
    margin-top: 40px;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border-top: 1px solid var(--glass-border);
    border-radius: 20px 20px 0 0;
}

.footer p {
    color: var(--text-muted);
    font-size: 0.9em;
    font-weight: 300;
    margin: 0;
    opacity: 0.8;
}