/**
 * RainerumSim - Common Styles
 * Shared CSS for all simulation pages
 */

/* === CSS Reset === */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* === CSS Variables === */
:root {
    /* Colors */
    --bg-primary: #000000;
    --bg-secondary: rgba(5, 5, 8, 0.98);
    --bg-tertiary: rgba(8, 8, 12, 0.95);
    --bg-panel: rgba(255, 255, 255, 0.02);
    
    --text-primary: #e0e0e0;
    --text-secondary: #d0d0d0;
    --text-muted: #c0c0c0;
    --text-accent: #ffffff;
    
    --border-light: rgba(255, 255, 255, 0.15);
    --border-medium: rgba(255, 255, 255, 0.1);
    --border-dark: rgba(255, 255, 255, 0.06);
    
    --button-bg: rgba(35, 35, 40, 0.9);
    --button-hover: rgba(45, 45, 50, 0.95);
    
    --accent-green: #00ff00;
    --accent-cyan: #00ffff;
    --accent-yellow: #ffff00;
    --accent-orange: #ff8800;
    --accent-red: #ff0000;
    --accent-blue: #7dd3fc;
    
    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 12px;
    --spacing-lg: 20px;
    --spacing-xl: 40px;
    
    /* Border radius */
    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 8px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    
    /* Panel dimensions */
    --panel-width: 350px;
    --panel-width-tablet: 300px;
}

/* === Base Styles === */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    overflow: hidden;
    height: 100vh;
}

/* === Back Button === */
.back-btn {
    position: fixed;
    top: var(--spacing-lg);
    right: calc(var(--panel-width) + 30px);
    z-index: 101;
    background: rgba(30, 30, 35, 0.9);
    color: var(--text-primary);
    padding: 10px var(--spacing-lg);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    cursor: pointer;
    text-decoration: none;
    font-size: 13px;
    font-weight: 500;
    transition: all var(--transition-normal);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.8);
}

.back-btn:hover {
    background: rgba(40, 40, 45, 0.95);
    border-color: rgba(255, 255, 255, 0.25);
    color: var(--text-accent);
}

/* === Canvas Container === */
#canvas-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

/* === Info Popup === */
#info-popup {
    position: fixed;
    top: var(--spacing-lg);
    left: var(--spacing-lg);
    background: var(--bg-tertiary);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-dark);
    border-radius: var(--radius-lg);
    padding: 15px var(--spacing-lg);
    z-index: 100;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.9);
    min-width: 280px;
    max-width: 350px;
}

#info-popup h3 {
    color: var(--text-primary);
    margin-bottom: 10px;
    font-size: 15px;
    border-bottom: 1px solid var(--border-medium);
    padding-bottom: 5px;
    font-weight: 500;
}

.info-row {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-xs) 0;
    font-size: 13px;
}

.info-label {
    color: var(--text-secondary);
}

.info-value {
    color: var(--text-accent);
    font-weight: 600;
    text-align: right;
}

/* === Control Panel === */
#control-panel {
    position: fixed;
    top: 0;
    right: 0;
    width: var(--panel-width);
    height: 100%;
    background: var(--bg-secondary);
    backdrop-filter: blur(20px);
    border-left: 1px solid var(--border-dark);
    padding: var(--spacing-lg);
    overflow-y: auto;
    overflow-x: hidden;
    z-index: 100;
    box-shadow: -5px 0 30px rgba(0, 0, 0, 0.9);
    transition: transform var(--transition-normal);
}

#control-panel.hidden {
    transform: translateX(var(--panel-width));
}

#control-panel::-webkit-scrollbar {
    width: 6px;
}

#control-panel::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.02);
}

#control-panel::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.15);
    border-radius: 3px;
}

#control-panel::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.25);
}

/* === Panel Toggle === */
.panel-toggle {
    position: fixed;
    top: 50%;
    right: var(--panel-width);
    transform: translateY(-50%);
    z-index: 101;
    background: rgba(30, 30, 35, 0.95);
    border: 1px solid var(--border-medium);
    border-right: none;
    border-radius: var(--radius-md) 0 0 var(--radius-md);
    padding: 15px var(--spacing-sm);
    cursor: pointer;
    font-size: 18px;
    color: var(--text-primary);
    transition: all var(--transition-normal);
    box-shadow: -2px 0 10px rgba(0, 0, 0, 0.5);
}

.panel-toggle.hidden {
    right: 0;
    border-right: 1px solid var(--border-medium);
}

.panel-toggle:hover {
    background: rgba(40, 40, 45, 0.98);
    color: var(--text-accent);
}

/* === Control Section === */
.control-section {
    margin-bottom: var(--spacing-lg);
    padding: 15px;
    background: var(--bg-panel);
    border: 1px solid rgba(255, 255, 255, 0.04);
    border-radius: var(--radius-md);
}

.control-section h3 {
    color: var(--text-primary);
    font-size: 14px;
    margin-bottom: var(--spacing-md);
    font-weight: 500;
    border-bottom: 1px solid var(--border-dark);
    padding-bottom: var(--spacing-md);
}

/* === Control Group === */
.control-group {
    margin-bottom: var(--spacing-md);
}

.control-group label {
    display: block;
    color: var(--text-muted);
    font-size: 12px;
    margin-bottom: 5px;
    font-weight: 400;
}

.control-value {
    float: right;
    color: var(--text-accent);
    font-weight: 600;
}

/* === Form Controls === */
input[type="range"] {
    width: 100%;
    height: 4px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 2px;
    outline: none;
    -webkit-appearance: none;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 14px;
    height: 14px;
    background: var(--text-accent);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 0 4px rgba(0, 0, 0, 0.5);
}

input[type="range"]::-moz-range-thumb {
    width: 14px;
    height: 14px;
    background: var(--text-accent);
    border-radius: 50%;
    cursor: pointer;
    border: none;
}

input[type="number"],
input[type="color"] {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-sm);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-sm);
    color: var(--text-accent);
    font-size: 12px;
}

input[type="checkbox"] {
    margin-right: var(--spacing-sm);
}

/* === Buttons === */
button {
    width: 100%;
    padding: var(--spacing-md);
    margin: var(--spacing-md) 0;
    background: var(--button-bg);
    color: var(--text-primary);
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
    transition: all var(--transition-normal);
}

button:hover {
    background: var(--button-hover);
    border-color: rgba(255, 255, 255, 0.2);
    color: var(--text-accent);
}

button.start {
    background: rgba(35, 35, 45, 0.9);
}

button.start:hover {
    background: rgba(45, 45, 55, 0.95);
}

button.reset {
    background: rgba(30, 30, 35, 0.9);
}

button.reset:hover {
    background: rgba(40, 40, 45, 0.95);
}

/* === Mobile Warning === */
#mobile-warning {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.95);
    z-index: 10000;
    display: none;
    justify-content: center;
    align-items: center;
    padding: var(--spacing-lg);
}

#mobile-warning .warning-content {
    background: rgba(10, 10, 15, 0.98);
    border: 1px solid var(--border-medium);
    border-radius: 10px;
    padding: var(--spacing-xl);
    max-width: 500px;
    width: 90%;
    box-shadow: 0 10px 50px rgba(0, 0, 0, 0.95);
    text-align: center;
}

#mobile-warning h2 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
    font-size: 22px;
    font-weight: 500;
}

#mobile-warning p {
    color: var(--text-muted);
    line-height: 1.6;
    margin-bottom: var(--spacing-lg);
    font-size: 15px;
}

#mobile-warning button {
    background: var(--button-bg);
    color: var(--text-primary);
    border: 1px solid var(--border-medium);
    padding: var(--spacing-md) 30px;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: all var(--transition-normal);
    width: auto;
}

#mobile-warning button:hover {
    background: var(--button-hover);
    color: var(--text-accent);
}

/* === Graph Modal === */
.graph-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.95);
    z-index: 10000;
    justify-content: center;
    align-items: center;
    padding: var(--spacing-lg);
}

.graph-modal.active {
    display: flex;
}

.graph-modal-content {
    background: rgba(10, 10, 15, 0.98);
    border: 1px solid var(--border-medium);
    border-radius: 10px;
    padding: var(--spacing-lg);
    max-width: 90vw;
    max-height: 90vh;
    width: 900px;
    box-shadow: 0 10px 50px rgba(0, 0, 0, 0.95);
}

.graph-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-medium);
}

.graph-modal-header h2 {
    color: var(--text-primary);
    font-size: 18px;
    font-weight: 500;
}

.graph-modal-header .close-btn {
    background: rgba(255, 255, 255, 0.1);
    border: none;
    color: var(--text-primary);
    font-size: 24px;
    cursor: pointer;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    transition: all var(--transition-normal);
}

.graph-modal-header .close-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    color: var(--text-accent);
}

.graph-modal-canvas {
    width: 100%;
    height: 400px;
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.graph-modal-controls {
    display: flex;
    gap: 10px;
    margin-top: 15px;
    flex-wrap: wrap;
}

.graph-modal-controls button {
    padding: 10px var(--spacing-lg);
    width: auto;
    flex: 0 0 auto;
}

/* === Formulas Panel === */
#formulas-panel {
    position: fixed;
    top: 280px;
    left: var(--spacing-lg);
    background: var(--bg-tertiary);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-dark);
    border-radius: var(--radius-lg);
    z-index: 100;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.9);
    min-width: 280px;
    max-width: 350px;
    max-height: calc(100vh - 480px);
    transition: all var(--transition-normal);
    overflow: hidden;
}

.formulas-content {
    padding: 15px;
    max-height: calc(100vh - 540px);
    overflow-y: auto;
}

.formulas-content::-webkit-scrollbar {
    width: 4px;
}

.formulas-content::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.02);
}

.formulas-content::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.15);
    border-radius: 2px;
}

#formulas-panel.collapsed {
    max-height: 44px;
}

#formulas-panel.collapsed .formulas-content {
    display: none;
}

.formulas-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) 15px;
    cursor: pointer;
    border-bottom: 1px solid var(--border-medium);
    user-select: none;
}

.formulas-header:hover {
    background: rgba(255, 255, 255, 0.02);
}

.formulas-header h3 {
    color: var(--text-primary);
    font-size: 15px;
    font-weight: 500;
    margin: 0;
}

.formulas-toggle-icon {
    color: #a0a0a0;
    font-size: 12px;
    transition: transform var(--transition-normal);
}

#formulas-panel.collapsed .formulas-toggle-icon {
    transform: rotate(-90deg);
}

.formula-item {
    margin-bottom: var(--spacing-md);
    padding-bottom: 10px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.formula-item:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.formula-name {
    color: #b8c0cc;
    font-size: 11px;
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 500;
}

.formula-equation {
    color: var(--accent-blue);
    font-size: 17px;
    font-family: 'Cambria Math', 'Times New Roman', serif;
    font-style: italic;
    margin-bottom: var(--spacing-xs);
}

.formula-calculated {
    color: #d1d5db;
    font-size: 13px;
    margin-top: var(--spacing-xs);
    font-family: 'Consolas', 'Monaco', monospace;
    background: rgba(255, 255, 255, 0.03);
    padding: var(--spacing-md) var(--spacing-sm);
    border-radius: var(--radius-sm);
    border-left: 2px solid #4ade80;
}

.formula-calculated span {
    color: #93c5fd;
}

.formula-calculated .formula-result {
    color: #4ade80;
    font-weight: bold;
}

/* === Responsive Design === */
@media (max-width: 1024px) {
    #control-panel {
        width: var(--panel-width-tablet);
    }
    
    #control-panel.hidden {
        transform: translateX(var(--panel-width-tablet));
    }
    
    .panel-toggle {
        right: var(--panel-width-tablet);
    }
    
    .panel-toggle.hidden {
        right: 0;
    }
    
    .back-btn {
        right: calc(var(--panel-width-tablet) + 20px);
    }
}

@media (max-width: 768px) {
    #control-panel {
        width: 100%;
        height: auto;
        max-height: 50vh;
        top: auto;
        bottom: 0;
        border-left: none;
        border-top: 1px solid var(--border-dark);
    }
    
    #control-panel.hidden {
        transform: translateY(100%);
    }
    
    .panel-toggle {
        top: auto;
        bottom: calc(50vh - 20px);
        right: 50%;
        transform: translateX(50%);
        border-radius: var(--radius-md) var(--radius-md) 0 0;
        border-bottom: none;
        padding: var(--spacing-sm) 15px;
    }
    
    .panel-toggle.hidden {
        bottom: 0;
        border-bottom: 1px solid var(--border-medium);
    }
    
    .back-btn {
        top: 10px;
        right: 10px;
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 12px;
    }
    
    #info-popup {
        max-width: calc(100% - 100px);
        min-width: 200px;
        font-size: 11px;
    }
    
    .info-row {
        font-size: 11px;
    }
    
    #formulas-panel {
        top: auto;
        bottom: 55vh;
        left: 10px;
        max-width: calc(100% - 20px);
        min-width: 200px;
        font-size: 11px;
    }
    
    #formulas-panel.collapsed {
        max-height: 40px;
    }
    
    .formula-equation {
        font-size: 14px;
    }
}