@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@300;400;500;600&display=swap');

:root {
    --bg-primary: #0a0e27;
    --bg-secondary: #16213e;
    --bg-glass: rgba(255, 255, 255, 0.05);
    --text-primary: #e2e8f0;
    --text-secondary: #94a3b8;
    --accent: #6366f1;
    --accent-hover: #4f46e5;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --border: rgba(255, 255, 255, 0.1);
    --shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.8);
    --bar-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --bar-gradient-2: linear-gradient(135deg, #ff6b6b 0%, #ee5a24 100%);
    --bar-gradient-3: linear-gradient(135deg, #ffeaa7 0%, #fab1a0 100%);
}

[data-theme="light"] {
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-glass: rgba(255, 255, 255, 0.8);
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --border: rgba(0, 0, 0, 0.1);
    --shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
}

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

body {
    font-family: 'JetBrains Mono', 'Courier New', monospace;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    transition: all 0.3s ease;
}

#header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}

#header h1 {
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: -0.025em;
}

.header-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.toggle-container {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    font-size: 0.8rem;
}

.toggle-slider {
    position: relative;
    width: 40px;
    height: 20px;
    background: var(--text-secondary);
    border-radius: 20px;
    transition: all 0.3s ease;
}

.toggle-slider::before {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: white;
    top: 2px;
    left: 2px;
    transition: all 0.3s ease;
}

input[type="checkbox"]:checked + .toggle-slider {
    background: var(--accent);
}

input[type="checkbox"]:checked + .toggle-slider::before {
    transform: translateX(20px);
}

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

.theme-btn {
    background: var(--bg-glass);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0.5rem;
    font-size: 1.2rem;
    cursor: pointer;
    transition: all 0.2s ease;
    color: var(--text-primary);
}

.theme-btn:hover {
    background: var(--accent);
    transform: scale(1.05);
}

#sorting-containers {
    padding: 2rem 1rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
    min-height: 450px;
    transition: all 0.3s ease;
}

body.compact-view #sorting-containers {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
    padding: 1rem 0.5rem;
    min-height: 400px;
}

/* Single container - normal size in compact view */
body.compact-view #sorting-containers .sort-wrapper:only-child {
    width: 100%;
    max-width: 800px;
}

/* Two containers in compact view */
body.compact-view #sorting-containers .sort-wrapper:first-child:nth-last-child(2),
body.compact-view #sorting-containers .sort-wrapper:first-child:nth-last-child(2) ~ .sort-wrapper {
    width: calc(50% - 0.5rem);
    min-width: 400px;
}

/* Three containers in compact view */
body.compact-view #sorting-containers .sort-wrapper:first-child:nth-last-child(3),
body.compact-view #sorting-containers .sort-wrapper:first-child:nth-last-child(3) ~ .sort-wrapper {
    width: calc(33.33% - 0.67rem);
    min-width: 320px;
}

/* Responsive for compact view */
@media (max-width: 1400px) {
    body.compact-view #sorting-containers .sort-wrapper:first-child:nth-last-child(3),
    body.compact-view #sorting-containers .sort-wrapper:first-child:nth-last-child(3) ~ .sort-wrapper {
        width: calc(50% - 0.5rem);
        min-width: 350px;
    }
    
    body.compact-view #sorting-containers .sort-wrapper:first-child:nth-last-child(3) ~ .sort-wrapper:last-child {
        width: 100%;
        max-width: 500px;
    }
}

@media (max-width: 900px) {
    body.compact-view #sorting-containers .sort-wrapper:first-child:nth-last-child(2),
    body.compact-view #sorting-containers .sort-wrapper:first-child:nth-last-child(2) ~ .sort-wrapper {
        width: 100%;
        min-width: auto;
    }
}

@media (max-width: 768px) {
    body.compact-view .sort-wrapper {
        width: 100% !important;
        min-width: auto !important;
    }
}

.sort-wrapper {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    transition: all 0.3s ease;
}

.sort-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 1rem;
    margin-bottom: 1rem;
}

.sort-header h3 {
    font-size: 1rem;
    color: var(--text-secondary);
    font-weight: 500;
}

body.compact-view .sort-header h3 {
    font-size: 0.9rem;
}

.remove-container {
    background: var(--danger);
    border: none;
    border-radius: 50%;
    width: 30px;
    height: 30px;
    color: white;
    cursor: pointer;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

body.compact-view .remove-container {
    width: 25px;
    height: 25px;
    font-size: 1rem;
}

.remove-container:hover {
    background: #dc2626;
    transform: scale(1.1);
}

.sort-container {
    width: 100%;
    height: 350px;
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 20px;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: all 0.5s ease;
}

/* Container height adjustments for compact view based on number of containers */
body.compact-view .sort-container {
    height: 300px;
    padding: 15px;
    border-radius: 12px;
}

body.compact-view #sorting-containers .sort-wrapper:first-child:nth-last-child(2) .sort-container,
body.compact-view #sorting-containers .sort-wrapper:first-child:nth-last-child(2) ~ .sort-wrapper .sort-container {
    height: 280px;
}

body.compact-view #sorting-containers .sort-wrapper:first-child:nth-last-child(3) .sort-container,
body.compact-view #sorting-containers .sort-wrapper:first-child:nth-last-child(3) ~ .sort-wrapper .sort-container {
    height: 250px;
}

.sort-container.sorting-complete {
    border-color: var(--success);
    box-shadow: 0 0 30px rgba(16, 185, 129, 0.3);
}

/* Different bar colors for different containers */
.sort-wrapper:nth-child(1) .bar {
    background: var(--bar-gradient);
}

.sort-wrapper:nth-child(2) .bar {
    background: var(--bar-gradient-2);
}

.sort-wrapper:nth-child(3) .bar {
    background: var(--bar-gradient-3);
}

.bar {
    width: 4px;
    background: var(--bar-gradient);
    border-radius: 2px 2px 0 0;
    margin: 0 0.5px;
    transition: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    max-height: 310px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    cursor: pointer;
    position: relative;
}

/* Responsive bar sizing for compact view based on container count */
body.compact-view .bar {
    max-height: 260px;
    width: 3px;
    margin: 0 0.3px;
}

body.compact-view #sorting-containers .sort-wrapper:first-child:nth-last-child(2) .bar,
body.compact-view #sorting-containers .sort-wrapper:first-child:nth-last-child(2) ~ .sort-wrapper .bar {
    max-height: 240px;
    width: 3px;
    margin: 0 0.25px;
}

body.compact-view #sorting-containers .sort-wrapper:first-child:nth-last-child(3) .bar,
body.compact-view #sorting-containers .sort-wrapper:first-child:nth-last-child(3) ~ .sort-wrapper .bar {
    max-height: 210px;
    width: 2.5px;
    margin: 0 0.2px;
}

.bar:hover {
    filter: brightness(1.2);
    transform: scaleX(1.2);
}

#control-panel {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    padding: 2rem 0;
}

.controls-wrapper {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 2rem;
    align-items: end;
    margin-bottom: 2rem;
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.control-label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.container-controls {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.container-count {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-align: center;
}

.data-buttons {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.data-buttons .btn {
    flex: 1;
    padding: 0.5rem;
    font-size: 0.8rem;
}

.form-control {
    background: var(--bg-glass);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0.75rem;
    font-size: 0.9rem;
    font-family: inherit;
    color: var(--text-primary);
    transition: all 0.2s ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.help-text {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.buttons-group {
    display: flex;
    gap: 0.75rem;
}

.btn {
    flex: 1;
    padding: 0.75rem 1rem;
    border: none;
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 500;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

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

.btn-primary:hover:not(:disabled) {
    background: var(--accent-hover);
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--text-secondary);
    color: white;
}

.btn-secondary:hover:not(:disabled) {
    background: var(--text-primary);
    transform: translateY(-1px);
}

.btn-danger {
    background: var(--danger);
    color: white;
}

.btn-danger:hover:not(:disabled) {
    background: #dc2626;
    transform: translateY(-1px);
}

.btn-warning {
    background: var(--warning);
    color: white;
}

.btn-warning:hover:not(:disabled) {
    background: #d97706;
    transform: translateY(-1px);
}

.btn-accent {
    background: var(--success);
    color: white;
}

.btn-accent:hover:not(:disabled) {
    background: #059669;
    transform: translateY(-1px);
}

.btn-info {
    background: #3b82f6;
    color: white;
}

.btn-info:hover:not(:disabled) {
    background: #2563eb;
    transform: translateY(-1px);
}

#algorithm-selectors {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.algorithm-selector {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--bg-glass);
    border: 1px solid var(--border);
    border-radius: 12px;
}

.algorithm-selector label {
    font-size: 0.9rem;
    font-weight: 500;
    min-width: 120px;
    color: var(--text-primary);
}

.algorithm-selector select {
    flex: 1;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0.5rem;
    color: var(--text-primary);
    font-family: inherit;
}

.algorithm-selector select option {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

/* Fix for dropdown visibility in dark mode */
.algorithm-selector select:focus {
    outline: none;
    border-color: var(--accent);
}

.tooltip {
    position: absolute;
    background: var(--bg-secondary);
    color: var(--text-primary);
    padding: 0.5rem;
    border-radius: 6px;
    font-size: 0.8rem;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.2s ease;
    z-index: 1000;
    border: 1px solid var(--border);
}

.tooltip.show {
    opacity: 1;
}

/* Responsive */
@media (max-width: 768px) {
    .controls-wrapper {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .buttons-group {
        flex-direction: column;
    }
    
    .bar {
        width: 3px;
        margin: 0 0.3px;
    }
    
    #header {
        padding: 1rem;
    }
    
    #header h1 {
        font-size: 1.25rem;
    }
    
    .header-controls {
        flex-wrap: wrap;
        gap: 0.5rem;
    }
    
    .algorithm-selector {
        flex-direction: column;
        align-items: stretch;
    }
    
    .algorithm-selector label {
        min-width: auto;
    }
}

@media (max-width: 480px) {
    .bar {
        width: 2px;
        margin: 0 0.2px;
    }
    
    body.compact-view .bar {
        width: 2px;
        margin: 0 0.2px;
    }
}

/* Animations */
@keyframes sortComplete {
    0%, 100% { 
        border-color: var(--border);
        box-shadow: var(--shadow);
    }
    50% { 
        border-color: var(--success);
        box-shadow: 0 0 30px rgba(16, 185, 129, 0.5);
    }
}

.sort-container.completed {
    animation: sortComplete 2s ease-in-out;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

/* Smooth theme transition */
* {
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}