/* ==========================================================================
   Ecosystem Niche & Stability Simulator - Modern CSS Design System
   ========================================================================== */

/* Design Tokens & Theme Variables */
:root {
    --bg-main: #0b0f19;
    --bg-sidebar: #111827;
    --bg-card: rgba(20, 26, 42, 0.65);
    --bg-card-hover: rgba(28, 37, 59, 0.8);
    --border-color: rgba(255, 255, 255, 0.08);
    --border-color-active: rgba(99, 102, 241, 0.4);
    
    /* Semantic Colors */
    --color-primary: #6366f1;       /* Indigo */
    --color-primary-hover: #4f46e5;
    --color-success: #10b981;       /* Emerald */
    --color-success-bg: rgba(16, 185, 129, 0.1);
    --color-danger: #f43f5e;        /* Rose */
    --color-danger-bg: rgba(244, 63, 94, 0.1);
    --color-warning: #f59e0b;       /* Amber */
    --color-info: #0ea5e9;          /* Sky Blue */
    
    /* Text Colors */
    --text-primary: #f8fafc;        /* Slate 50 */
    --text-secondary: #94a3b8;      /* Slate 400 */
    --text-muted: #64748b;          /* Slate 500 */
    
    /* UI Layout constants */
    --sidebar-width: 340px;
    --card-radius: 16px;
    --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
    --font-title: 'Outfit', var(--font-sans);
    --font-mono: 'JetBrains Mono', monospace;
    --glass-blur: blur(12px);
    --shadow-main: 0 10px 25px -5px rgba(0, 0, 0, 0.3), 0 8px 10px -6px rgba(0, 0, 0, 0.3);
}

/* Base resets & styles */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--bg-main);
    color: var(--text-primary);
    font-family: var(--font-sans);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.5;
}

/* App Layout */
.app-container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar Styling */
.control-panel {
    width: var(--sidebar-width);
    background-color: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    height: 100vh;
    position: sticky;
    top: 0;
    z-index: 10;
}

.panel-header {
    padding: 24px 20px;
    border-bottom: 1px solid var(--border-color);
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: var(--font-title);
    font-size: 22px;
    font-weight: 800;
    background: linear-gradient(135deg, #a5b4fc 0%, #6366f1 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.logo i {
    background: linear-gradient(135deg, #a5b4fc 0%, #6366f1 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    -webkit-text-stroke: 1px rgba(255, 255, 255, 0.1);
}

.subtitle {
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 4px;
    font-weight: 500;
}

.panel-scroll-container {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

/* Scrollbar Customization */
.panel-scroll-container::-webkit-scrollbar {
    width: 6px;
}
.panel-scroll-container::-webkit-scrollbar-track {
    background: transparent;
}
.panel-scroll-container::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
}
.panel-scroll-container::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.2);
}

.control-section {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.section-title {
    font-family: var(--font-title);
    font-size: 15px;
    font-weight: 700;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    display: flex;
    align-items: center;
    gap: 8px;
    padding-bottom: 8px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.section-title i {
    color: var(--color-primary);
}

/* Preset Buttons Grid */
.preset-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
}

.preset-grid button:first-child {
    grid-column: span 2;
}

.btn-preset {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-secondary);
    padding: 8px 10px;
    font-size: 11px;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.btn-preset:hover {
    background: rgba(99, 102, 241, 0.1);
    border-color: var(--color-primary);
    color: var(--text-primary);
}

/* Control Group Sliders & Controls */
.control-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.control-label {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
}

.label-text {
    display: inline-flex;
    align-items: center;
}

.value-display {
    font-family: var(--font-mono);
    color: var(--color-primary);
    background: rgba(99, 102, 241, 0.1);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
}

/* Toggle Buttons Style */
.toggle-buttons {
    display: flex;
    background: rgba(0, 0, 0, 0.2);
    padding: 3px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.btn-toggle {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-toggle.active {
    background: var(--color-primary);
    color: var(--text-primary);
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

/* Form Select Elements */
.form-select {
    background-color: rgba(0, 0, 0, 0.25);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    padding: 8px 12px;
    font-size: 13px;
    font-weight: 500;
    outline: none;
    cursor: pointer;
    transition: all 0.2s ease;
}

.form-select:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.15);
}

/* Styled Range Sliders */
input[type="range"] {
    -webkit-appearance: none;
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 3px;
    outline: none;
    transition: all 0.2s ease;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--color-primary);
    cursor: pointer;
    box-shadow: 0 0 8px rgba(99, 102, 241, 0.5);
    transition: transform 0.1s ease;
}

input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    background: #818cf8;
}

/* Actions Row Buttons */
.button-row {
    margin-top: 8px;
}

.btn-action {
    width: 100%;
    background: linear-gradient(135deg, var(--color-primary) 0%, #4f46e5 100%);
    border: none;
    border-radius: 8px;
    color: var(--text-primary);
    padding: 10px 16px;
    font-family: var(--font-title);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    box-shadow: 0 4px 10px rgba(99, 102, 241, 0.3);
    transition: all 0.2s ease;
}

.btn-action:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 15px rgba(99, 102, 241, 0.4);
    filter: brightness(1.1);
}

.btn-action:active {
    transform: translateY(1px);
}

.panel-footer {
    padding: 16px 20px;
    border-top: 1px solid var(--border-color);
    font-size: 11px;
    color: var(--text-muted);
    text-align: center;
    font-weight: 500;
}

/* Main Content Styles */
.main-content {
    flex: 1;
    height: 100vh;
    overflow-y: auto;
    padding: 30px;
    display: flex;
    flex-direction: column;
    gap: 30px;
    background: radial-gradient(circle at 60% 10%, rgba(20, 26, 42, 0.5) 0%, rgba(11, 15, 25, 0.1) 80%);
}

/* Cards Layout */
.card {
    background: var(--bg-card);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-color);
    border-radius: var(--card-radius);
    padding: 24px;
    box-shadow: var(--shadow-main);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.card:hover {
    border-color: rgba(255, 255, 255, 0.12);
}

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

.card-title {
    font-family: var(--font-title);
    font-size: 17px;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 10px;
}

.card-title i {
    color: var(--color-primary);
}

/* Status Cards Grid */
.status-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 24px;
}

/* Status Card Theme colors */
.status-card {
    display: flex;
    align-items: center;
    gap: 24px;
    padding: 24px;
    position: relative;
    overflow: hidden;
}

.status-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    width: 6px;
    background-color: var(--color-success);
}

.status-card.unstable::before {
    background-color: var(--color-danger);
}

.status-icon {
    font-size: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    border-radius: 16px;
    transition: all 0.3s ease;
}

/* Custom Success State styling */
.status-card.stable .status-icon {
    background-color: var(--color-success-bg);
    color: var(--color-success);
}

/* Custom Danger State styling */
.status-card.unstable .status-icon {
    background-color: var(--color-danger-bg);
    color: var(--color-danger);
}

.status-info {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.status-label {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    font-weight: 600;
}

.status-value {
    font-family: var(--font-title);
    font-size: 24px;
    font-weight: 800;
}

.stable .status-value {
    color: var(--color-success);
}

.unstable .status-value {
    color: var(--color-danger);
}

.status-description {
    font-size: 13px;
    color: var(--text-secondary);
}

/* Value Display Cards */
.val-card {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.val-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.val-header i {
    font-size: 14px;
    color: var(--text-muted);
}

.val-body {
    display: flex;
    align-items: baseline;
    gap: 4px;
    margin: 16px 0 8px 0;
}

.val-number {
    font-family: var(--font-title);
    font-size: 32px;
    font-weight: 800;
    letter-spacing: -0.02em;
}

.val-number.stable-val {
    color: var(--color-success);
}

.val-number.unstable-val {
    color: var(--color-danger);
}

.val-unit {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-muted);
}

.val-footer {
    font-size: 11px;
    color: var(--text-muted);
    font-weight: 500;
}

/* Badges Styling */
.badge {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 4px 8px;
    border-radius: 6px;
    font-size: 11px;
    font-weight: 600;
}

.badge-info {
    background: rgba(14, 165, 233, 0.1);
    border-color: rgba(14, 165, 233, 0.2);
    color: var(--color-info);
}

.font-mono {
    font-family: var(--font-mono);
}

.btn-icon {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    width: 32px;
    height: 32px;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.btn-icon:hover {
    background: var(--color-danger-bg);
    border-color: rgba(244, 63, 94, 0.3);
    color: var(--color-danger);
}

/* Niche Canvas Container styling */
.niche-canvas-container {
    height: 220px;
    position: relative;
    border-radius: 8px;
    background: rgba(0, 0, 0, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.03);
    overflow: hidden;
}

#niche-canvas {
    width: 100%;
    height: 100%;
    display: block;
    cursor: crosshair;
}

/* Selected Species Info Panel */
.selected-species-panel {
    margin-top: 16px;
    padding: 16px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px dashed var(--border-color-active);
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    animation: slideDown 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

.species-title-row {
    display: flex;
    align-items: center;
    gap: 10px;
}

.species-tag {
    width: 12px;
    height: 12px;
    border-radius: 3px;
}

.species-name {
    font-family: var(--font-title);
    font-weight: 700;
    font-size: 14px;
}

.spacer {
    flex: 1;
}

.btn-close {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 14px;
    padding: 4px;
    transition: color 0.2s ease;
}

.btn-close:hover {
    color: var(--text-primary);
}

.species-sliders-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr) auto;
    align-items: flex-end;
    gap: 20px;
}

.detail-control {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.detail-label {
    font-size: 11px;
    color: var(--text-secondary);
}

.detail-label strong {
    font-family: var(--font-mono);
    color: var(--color-primary);
    font-size: 12px;
}

.btn-danger-outline {
    background: transparent;
    border: 1px solid rgba(244, 63, 94, 0.4);
    color: var(--color-danger);
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: all 0.2s ease;
}

.btn-danger-outline:hover {
    background: var(--color-danger);
    color: var(--text-primary);
    box-shadow: 0 0 10px rgba(244, 63, 94, 0.25);
}

/* Graphics Grid (Heatmap & Complex Plane) */
.graphics-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.matrix-canvas-container, .spectrum-canvas-container {
    height: 340px;
    position: relative;
    border-radius: 8px;
    background: rgba(0, 0, 0, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.03);
    overflow: hidden;
}

#matrix-canvas, #spectrum-canvas {
    width: 100%;
    height: 100%;
    display: block;
}

/* Heatmap & Spectrum Tooltips */
.matrix-tooltip, .spectrum-tooltip {
    position: absolute;
    background: rgba(15, 23, 42, 0.95);
    border: 1px solid var(--border-color-active);
    color: var(--text-primary);
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 12px;
    font-family: var(--font-mono);
    pointer-events: none;
    opacity: 0;
    transform: translate(-50%, -100%) translateY(-10px);
    transition: opacity 0.15s ease, transform 0.15s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
    z-index: 5;
    white-space: pre-line;
}

/* Legends */
.matrix-legend {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 14px;
}

.legend-title {
    font-size: 12px;
    color: var(--text-secondary);
    font-weight: 500;
}

.legend-scale {
    display: flex;
    align-items: center;
    gap: 8px;
    flex: 1;
    max-width: 280px;
}

.legend-label {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--text-muted);
    font-weight: 600;
}

.legend-bar {
    height: 8px;
    flex: 1;
    border-radius: 4px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.spectrum-legend {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 14px;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    color: var(--text-secondary);
    font-weight: 500;
}

.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    display: inline-block;
}

.dot-stable {
    background-color: var(--color-success-bg);
    border: 1.5px solid var(--color-success);
}

.dot-unstable {
    background-color: var(--color-danger-bg);
    border: 1.5px solid var(--color-danger);
}

.dot-eigen {
    background-color: var(--color-primary);
    box-shadow: 0 0 6px var(--color-primary);
}

/* Math Explanation block styling */
.math-context-card {
    margin-top: 10px;
}

.math-content-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.math-block {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.math-block h4 {
    font-family: var(--font-title);
    font-size: 15px;
    color: #cbd5e1;
    font-weight: 700;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    padding-bottom: 6px;
}

.math-block p, .math-block li {
    font-size: 12.5px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.math-block ul {
    padding-left: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.formula {
    background: rgba(0, 0, 0, 0.2);
    padding: 8px 12px;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.03);
    text-align: center;
    margin: 4px 0;
    overflow-x: auto;
}

.formula .mjx-container {
    margin: 0 !important;
}

/* Responsive adjustments */
@media (max-width: 1400px) {
    .graphics-grid {
        grid-template-columns: 1fr;
    }
    .math-content-grid {
        grid-template-columns: 1fr;
    }
    .status-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 1024px) {
    .app-container {
        flex-direction: column;
    }
    .control-panel {
        width: 100%;
        height: auto;
        position: relative;
    }
    .panel-scroll-container {
        height: 400px;
    }
    .main-content {
        height: auto;
    }
}