/* UltraSwim 33.3 Dark Color Scheme */
:root {
    --primary-color: #40c1ac;
    --accent-color: #ed6ea2;
    --background-color: #1a1a1a;
    --surface-color: #2d2d2d;
    --text-color: #e5e5e5;
    --text-secondary: #b0b0b0;
    --border-color: #404040;
    --shadow: 0 2px 4px rgba(0,0,0,0.3);
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Ubuntu', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
}

/* Header */
header {
    background-color: var(--surface-color);
    box-shadow: var(--shadow);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    gap: 2rem;
}

.logo {
    height: 50px;
    width: auto;
}

h1 {
    color: var(--primary-color);
    font-size: 2rem;
    font-weight: 600;
}

/* Controls */
.controls {
    max-width: 1400px;
    margin: 2rem auto;
    padding: 0 2rem;
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    background-color: var(--surface-color);
    padding: 1.5rem 2rem;
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    flex: 1;
    min-width: 150px;
}

.control-group label {
    font-weight: 600;
    color: var(--text-color);
    font-size: 0.875rem;
}

.control-group select,
.control-group input {
    padding: 0.5rem;
    border: 2px solid var(--border-color);
    border-radius: 4px;
    font-size: 0.875rem;
    background-color: var(--background-color);
    color: var(--text-color);
    transition: var(--transition);
}

.control-group select:focus,
.control-group input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.search-group {
    flex: 2;
}

.ranking-mode-group {
    flex: 2;
    border: 2px solid var(--primary-color);
    border-radius: 8px;
    padding: 1rem;
    background-color: rgba(64, 193, 172, 0.1);
}

.toggle-buttons {
    display: flex;
    gap: 0.5rem;
}

.toggle-btn {
    flex: 1;
    padding: 0.75rem 0.5rem;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    background-color: var(--background-color);
    color: var(--text-color);
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.875rem;
    font-weight: 500;
    font-family: 'Ubuntu', sans-serif;
}

.toggle-btn.active {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

.toggle-btn:hover:not(.active) {
    border-color: var(--primary-color);
    background-color: rgba(64, 193, 172, 0.2);
}

/* Stage Navigation */
.stage-navigation {
    max-width: 1400px;
    margin: 2rem auto;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2rem;
}

.stage-button {
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 50%;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
}

.stage-button:hover:not(:disabled) {
    background-color: #35a594;
    transform: scale(1.1);
}

.stage-button:disabled {
    background-color: #555;
    cursor: not-allowed;
}

.play-button {
    background-color: var(--accent-color);
}

.play-button:hover:not(:disabled) {
    background-color: #d85a8c;
    transform: scale(1.1);
}

.stage-info {
    text-align: center;
    width: 200px;
}

#stage-title {
    color: var(--text-color);
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.stage-dots {
    display: flex;
    gap: 0.5rem;
    justify-content: center;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: #555;
    transition: var(--transition);
    cursor: pointer;
}

.dot.active {
    background-color: var(--primary-color);
    transform: scale(1.3);
}

/* Visualization Container */
#visualization-container {
    max-width: 1400px;
    margin: 2rem auto;
    padding: 0 2rem;
    background-color: var(--surface-color);
    border-radius: 8px;
    box-shadow: var(--shadow);
    padding: 2rem;
    min-height: 600px;
    position: relative;
}

.interaction-hint {
    text-align: center;
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
    opacity: 0.7;
    font-style: italic;
}

.mobile-hint {
    display: none;
}

#chart-container {
    width: 100%;
    overflow-y: auto;
    overflow-x: hidden;
    max-height: 600px;
}

/* Bar styles */
.athlete-bar {
    cursor: pointer;
    /*transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);*/
}

.athlete-bar rect {
    fill: var(--primary-color);
    fill-opacity: 0.8;
    stroke: var(--surface-color);
    stroke-width: 1;
    transition: var(--transition);
}

.athlete-bar:hover rect {
    fill-opacity: 1;
    stroke: var(--accent-color);
    stroke-width: 2;
}

.athlete-bar.selected rect {
    fill: var(--accent-color);
    fill-opacity: 1;
    stroke: var(--accent-color);
    stroke-width
}

.athlete-bar.incomplete rect {
    fill: #666;
    fill-opacity: 0.5;
    stroke-dasharray: 3,3;
}

.athlete-bar.incomplete text {
    fill: #999;
    font-style: italic;
}

.athlete-bar text {
    fill: var(--text-color);
    font-size: 12px;
    font-weight: 500;
}

/* Progression Line */
.progression-line-group {
    pointer-events: none;
}

.progression-path {
    fill: none;
    stroke: white;
    stroke-width: 3px;
    opacity: 0.9;
}

.progression-dot {
    fill: white;
    stroke: var(--surface-color);
    stroke-width: 2px;
}

.progression-label {
    font-size: 12px;
    fill: white;
    font-weight: bold;
    font-family: 'Ubuntu', sans-serif;
}

/* X-axis */
#x-axis-container {
    margin-top: 1rem;
    height: 40px;
}

/* SVG axis styling */
.axis {
    color: var(--text-color);
}

.axis text {
    fill: var(--text-color);
}

.axis path,
.axis line {
    stroke: var(--border-color);
}

.tick text {
    fill: var(--text-color);
}

.tick line {
    stroke: var(--border-color);
}

/* Tooltip */
.tooltip {
    position: absolute;
    padding: 0.75rem;
    background-color: var(--surface-color);
    border: 2px solid var(--primary-color);
    border-radius: 4px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.4);
    display: none;
    pointer-events: none;
    z-index: 1000;
}

.tooltip h4 {
    color: var(--primary-color);
    margin-bottom: 0.25rem;
}

.tooltip p {
    font-size: 0.875rem;
    margin: 0.125rem 0;
    color: var(--text-color);
}

/* Selected Athlete Panel */
.selected-athlete-panel {
    position: fixed;
    right: 2rem;
    top: 50%;
    transform: translateY(-50%);
    background-color: var(--surface-color);
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
    padding: 1.5rem;
    width: 280px;
    display: none;
}

.selected-athlete-panel.active {
    display: block;
}

.selected-athlete-panel h3 {
    color: var(--accent-color);
    margin-bottom: 1rem;
}

.athlete-details p {
    margin: 0.1rem 0;
    font-size: 0.875rem;
    color: var(--text-color);
}

.athlete-details strong {
    color: var(--text-color);
}

.race-stats {
    background-color: var(--background-color);
    padding: 1rem;
    border-radius: 6px;
    margin: 0.5rem 0;
}

.stat-highlight {
    font-size: 1rem;
    margin-bottom: 0.5rem;
}

.rank-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-weight: 700;
    font-size: 1.1rem;
    margin-left: 0.25rem;
}

.rank-badge.individual {
    background-color: var(--accent-color);
    color: white;
}

.rank-badge.cumulative {
    background-color: var(--primary-color);
    color: white;
}

.progression-stats {
    margin-top: 0.75rem;
}

.progression-line {
    font-family: monospace;
    font-size: 0.9rem;
    color: var(--text-color);
}

.improvement-badge {
    display: inline-block;
    padding: 0.15rem 0.5rem;
    background-color: #4caf50;
    color: white;
    border-radius: 8px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-left: 0.5rem;
}

.improvement-badge.negative {
    background-color: #f44336;
}

/* Drag handle */
.drag-handle {
    position: absolute;
    top: 0.5rem;
    left: 50%;
    transform: translateX(-50%);
    cursor: move;
    padding: 0.25rem 0.5rem;
    display: none;
}

.selected-athlete-panel.active .drag-handle {
    display: block;
}

.drag-handle span {
    display: block;
    width: 20px;
    height: 2px;
    background-color: var(--text-secondary);
    margin: 2px 0;
    border-radius: 1px;
    transition: var(--transition);
}

.drag-handle:hover span {
    background-color: var(--primary-color);
}

.selected-athlete-panel.dragging {
    cursor: move;
    opacity: 0.9;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

/* Welcome Dialog */
.welcome-dialog {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    backdrop-filter: blur(4px);
}

.welcome-content {
    background-color: var(--surface-color);
    border-radius: 12px;
    padding: 2rem;
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
    border: 1px solid var(--border-color);
}

.close-button {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-secondary);
    cursor: pointer;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.close-button:hover {
    background-color: var(--border-color);
    color: var(--text-color);
}

.welcome-header {
    text-align: center;
    margin-bottom: 2rem;
}

.welcome-logo {
    height: 60px;
    margin-bottom: 1rem;
}

.welcome-header h2 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    font-size: 1.8rem;
}

.welcome-header h3 {
    color: var(--text-secondary);
    font-weight: 400;
    font-size: 1.1rem;
}

.welcome-body p {
    color: var(--text-color);
    margin-bottom: 1.5rem;
    line-height: 1.6;
    text-align: center;
}

.welcome-features {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
    margin-bottom: 2rem;
}

.feature {
    background-color: var(--background-color);
    padding: 1rem;
    border-radius: 8px;
    border-left: 4px solid var(--primary-color);
}

.feature strong {
    color: var(--primary-color);
    display: block;
    margin-bottom: 0.5rem;
}

.feature p {
    color: var(--text-secondary);
    margin: 0;
    font-size: 0.9rem;
    text-align: left;
}

.welcome-actions {
    text-align: center;
}

.bib-input-section {
    margin-bottom: 1.5rem;
}

.bib-input-section label {
    display: block;
    color: var(--text-color);
    margin-bottom: 0.5rem;
    font-weight: 500;
}

#welcome-bib-input {
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    background-color: var(--background-color);
    color: var(--text-color);
    font-size: 1rem;
    width: 200px;
    text-align: center;
    transition: var(--transition);
}

#welcome-bib-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.action-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.welcome-button {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    min-width: 180px;
}

.welcome-button.primary {
    background-color: var(--primary-color);
    color: white;
}

.welcome-button.primary:hover {
    background-color: #35a594;
    transform: translateY(-2px);
}

.welcome-button.secondary {
    background-color: var(--accent-color);
    color: white;
}

.welcome-button.secondary:hover {
    background-color: #d85a8c;
    transform: translateY(-2px);
}

.welcome-note {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin: 0;
    font-style: italic;
}

.welcome-credits {
    margin-top: 1.5rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.welcome-credits p {
    color: var(--text-secondary);
    margin: 0;
    font-size: 0.8rem;
    font-family: 'Ubuntu', sans-serif;
}

.welcome-credits a {
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition);
    font-weight: 500;
}

.welcome-credits a:hover {
    color: var(--accent-color);
    text-decoration: underline;
}

/* Hide welcome dialog by default */
.welcome-dialog.hidden {
    display: none;
}

/* Credits */
.credits {
    background-color: var(--surface-color);
    padding: 1.5rem 2rem;
    margin-top: 3rem;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.credits p {
    color: var(--text-secondary);
    margin: 0;
    font-size: 0.9rem;
    font-family: 'Ubuntu', sans-serif;
}

.credits a {
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition);
    font-weight: 500;
}

.credits a:hover {
    color: var(--accent-color);
    text-decoration: underline;
}

/* Mobile responsiveness */
@media (max-width: 768px) {
    header {
        position: static;
    }
    
    .header-content {
        flex-direction: column;
        text-align: center;
        padding: 0 0;
        gap: 0;
    }
    
    .logo {
        height: 40px;
    }
    
    h1 {
        font-size: 1.5rem;
    }
    
    .controls {
        padding: 1rem;
        margin: 1rem 0;
    }
    
    .control-group {
        min-width: 100%;
    }

    .ranking-mode-group {
        min-width: 100%;
    }

    .toggle-buttons {
        flex-direction: row;
    }

    .toggle-btn {
        font-size: 0.8rem;
        padding: 0.6rem 0.4rem;
    }

    .stage-navigation {
        padding: 0 1rem;
        gap: 1rem;
    }
    
    .stage-button {
        width: 40px;
        height: 40px;
    }
    
    #stage-title {
        font-size: 1.2rem;
    }
    
    .selected-athlete-panel {
        position: static;
        transform: none;
        width: 100%;
        margin-top: 1rem;
        right: auto;
    }
    
    .drag-handle {
        display: none !important;
    }
    
    #visualization-container {
        padding: 0;
        margin: 0;
    }

    .desktop-hint {
        display: none;
    }

    .mobile-hint {
        display: inline;
    }
    
    .welcome-dialog {
        
    }

    .welcome-content {
        padding: 1.5rem;
        margin: 0;
        width: 100%;
        max-height: 100vh;
    }
    
    .welcome-features {
        grid-template-columns: 1fr;
    }
    
    .action-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .welcome-button {
        min-width: auto;
        width: 100%;
        max-width: 280px;
    }
    
    #welcome-bib-input {
        width: 100%;
        max-width: 200px;
    }
    
    .credits {
        padding: 1rem;
        margin-top: 2rem;
        font-size: 0.85rem;
    }
    
    .credits p {
        font-size: 0.8rem;
    }
}

/* Loading state */
.loading {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 400px;
    font-size: 1.2rem;
    color: var(--primary-color);
}

/* Flag icons */
.flag-icon {
    width: 20px;
    height: 14px;
    display: inline-block;
    margin-right: 0.25rem;
    vertical-align: middle;
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.athlete-bar {
    animation: fadeIn 0.5s ease-out;
}