@import url('https://fonts.googleapis.com/css2?family=Unbounded:wght@700;800;900&family=Commissioner:wght@100;200;300;400;500;600;700&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Righteous&family=Rubik+Microbe&family=Sen:wght@400..800&family=Tilt+Neon&family=Unbounded:wght@200..900&display=swap');
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Light mode colors */
    --bg-primary: #ffffff;
    --bg-panel: rgba(255, 255, 255, 0.95);
    --bg-card: #f8f9fa;
    --border-color: #000;
    --text-primary: #000000;
    --text-secondary: #222222;
    --text-tertiary: #333333;
    --text-quaternary: #444444;
    --text-muted: #666;
    --btn-bg: rgba(255,255,255,0.8);
}

body.dark-mode {
    /* Dark mode colors */
    --bg-primary: #1a1a1a;
    --bg-panel: rgba(30, 30, 30, 0.95);
    --bg-card: #2a2a2a;
    --border-color: #404040;
    --text-primary: #ffffff;
    --text-secondary: #e0e0e0;
    --text-tertiary: #d0d0d0;
    --text-quaternary: #c0c0c0;
    --text-muted: #999;
    --btn-bg: rgba(40,40,40,0.8);
}

body {
    background: var(--bg-primary);
    font-family: 'Commissioner', sans-serif;
    overflow-x: hidden;
    transition: background-color 0.3s ease;
}

#canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    z-index: 0;
}

.hero-section {
    position: relative;
    height: 100vh;
    width: 100%;
}

.hero-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    z-index: 10;
}

.logo {
    font-size: 55px;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -3px;
    margin-bottom: 20px;
    pointer-events: none;
    font-family: "Unbounded", sans-serif;
    transition: color 0.3s ease, text-shadow 0.3s ease;
}

.name {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-tertiary);
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 40px;
    pointer-events: none;
    font-family: "Commissioner", sans-serif;
    transition: color 0.3s ease, text-shadow 0.3s ease;
}

.hero-buttons {
    display: flex;
    gap: 8px;
    justify-content: center;
    pointer-events: auto;
}

.btn {
    padding: 4px 10px;
    /*width: 13rem;*/
    font-size: 14px;
    font-weight: 500;
    font-family: 'Commissioner', sans-serif;
    background: var(--btn-bg);
    color: var(--text-primary);
    border: 2px solid var(--text-primary);
    border-radius: 15px;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.4);
}

.btn:hover {
    background: var(--bg-primary);
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.7);
}

.btn-icon {
    font-size: 18px;
}

#theme-button {
    position: fixed;
    top: 20px;
    right: 60px;
    cursor: pointer;
    z-index: 100;
    font-size: 20px;
    color: var(--text-primary);
    transition: all 0.2s ease;
}

#theme-button:hover {
    transform: scale(1.1);
}

#settings-button {
    position: fixed;
    top: 20px;
    right: 20px;
    cursor: pointer;
    z-index: 100;
    font-size: 20px;
    color: var(--text-primary);
    transition: all 0.2s ease;
}

#settings-button:hover {
    transform: rotate(90deg);
}

#settings-panel {
    position: fixed;
    top: 50px;
    right: 15px;
    width: 280px;
    max-height: 85vh;
    background: var(--bg-panel);
    border: 2px solid var(--border-color);
    border-radius: 6px;
    padding: 12px;
    z-index: 99;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    overflow-y: auto;
    display: none;
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

#settings-panel.visible {
    display: block;
}

.panel-header {
    font-size: 16px;
    font-weight: 600;
    font-family: 'Commissioner', sans-serif;
    margin-bottom: 8px;
    padding-bottom: 6px;
    border-bottom: 2px solid var(--border-color);
    color: var(--text-primary);
    transition: color 0.3s ease, border-color 0.3s ease;
}

.stat-group {
    margin-bottom: 8px;
}

.stat-label {
    font-size: 10px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 2px;
    font-family: 'Commissioner', sans-serif;
    font-weight: 400;
    transition: color 0.3s ease;
}

.stat-value {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-primary);
    font-family: monospace;
    transition: color 0.3s ease;
}

.control-group {
    margin-bottom: 12px;
}

.control-group label {
    color: var(--text-primary);
    transition: color 0.3s ease;
}

.control-label {
    font-size: 12px;
    font-weight: 500;
    font-family: 'Commissioner', sans-serif;
    margin-bottom: 4px;
    display: flex;
    justify-content: space-between;
    color: var(--text-primary);
    transition: color 0.3s ease;
}

.control-value {
    color: var(--text-muted);
    font-family: monospace;
    font-size: 11px;
    transition: color 0.3s ease;
}

input[type="range"] {
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: var(--border-color);
    outline: none;
    -webkit-appearance: none;
    transition: background-color 0.3s ease;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--text-primary);
    cursor: pointer;
    transition: background-color 0.3s ease;
}

input[type="range"]::-moz-range-thumb {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--text-primary);
    cursor: pointer;
    border: none;
    transition: background-color 0.3s ease;
}

.divider {
    height: 1px;
    background: var(--border-color);
    margin: 8px 0;
    transition: background-color 0.3s ease;
}

.action-buttons {
    display: flex;
    gap: 6px;
    margin-top: 10px;
}

.action-btn {
    flex: 1;
    padding: 6px 10px;
    font-size: 11px;
    font-weight: 500;
    font-family: 'Commissioner', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    border: 1px solid var(--text-primary);
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.action-btn:hover {
    background: var(--text-primary);
    color: var(--bg-primary);
}

.particle-input-group {
    display: flex;
    align-items: center;
    gap: 6px;
}

.particle-input {
    flex: 1;
    padding: 4px 8px;
    font-size: 16px;
    font-weight: 700;
    font-family: monospace;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: var(--bg-primary);
    color: var(--text-primary);
    text-align: center;
    transition: all 0.3s ease;
}

.particle-input:focus {
    outline: none;
    border-color: var(--text-primary);
}

.go-btn {
    padding: 4px 12px;
    font-size: 11px;
    font-weight: 500;
    font-family: 'Commissioner', sans-serif;
    background: #4CAF50;
    color: #ffffff;
    border: 1px solid #4CAF50;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.go-btn:hover {
    background: #45a049;
}

.go-btn.hidden {
    display: none;
}

.content-section {
    position: relative;
    z-index: 1;
    background: var(--bg-primary);
    min-height: 100vh;
    padding: 120px 20px;
    transition: background-color 0.3s ease;
}

body:not(.dark-mode) .content-section {
    background: linear-gradient(to bottom,
        rgba(255, 255, 255, 0) 0%,
        rgba(255, 255, 255, 0.35) 10%,
        rgba(255, 255, 255, 0.7) 20%,
        rgba(255, 255, 255, 0.7) 100%
    );
}

body.dark-mode .content-section {
    background: linear-gradient(to bottom,
        rgba(26, 26, 26, 0) 0%,
        rgba(26, 26, 26, 0.35) 10%,
        rgba(26, 26, 26, 0.7) 20%,
        rgba(26, 26, 26, 0.7) 100%
    );
}

.container {
    max-width: 750px;
    margin: 0 auto;
}

h1 {
    font-size: 48px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 30px;
    line-height: 1.2;
    font-family: 'Unbounded', sans-serif;
    transition: color 0.3s ease;
}

h2 {
    font-size: 36px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-top: 60px;
    margin-bottom: 20px;
    font-family: 'Unbounded', sans-serif;
    transition: color 0.3s ease;
}

p {
    font-size: 22px;
    line-height: 1.8;
    font-weight: 200;
    color: var(--text-quaternary);
    margin-bottom: 20px;
    font-family: 'Commissioner', sans-serif;
    font-weight: 300;
    transition: color 0.3s ease;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin: 40px 0;
}

.feature-card {
    padding: 30px;
    background: var(--bg-card);
    border-radius: 8px;
    border-left: 4px solid var(--text-primary);
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.feature-card h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--text-primary);
    font-family: 'Commissioner', sans-serif;
    transition: color 0.3s ease;
}

.feature-card p {
    font-size: 16px;
    color: var(--text-muted);
    margin: 0;
    font-family: 'Commissioner', sans-serif;
    font-weight: 300;
    transition: color 0.3s ease;
}