:root {
    --bg: #2c2c2c;
    --card: #393939;
    --input: #434343;
    --border: #555;
    --primary: #b840e7;
    --primary-hover: #a02fd0;
    --accent: #97141b;
    --text: #eaeaea;
    --text-dim: #bdbdbd;
    --win: #4CAF50;
    --lose: #f44336;
}

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

body {
    font-family: system-ui, -apple-system, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
}

/* Nav */
.nav {
    background: var(--card);
    border-bottom: 1px solid var(--border);
    padding: 1rem 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text);
    text-decoration: none;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    color: var(--text-dim);
    text-decoration: none;
    transition: color 0.2s;
}

.nav-links a:hover {
    color: var(--primary);
}

/* Hero */
.hero {
    min-height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 2rem;
}

.hero-content h1 {
    font-size: 4rem;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--primary), #ff6b9d);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--text-dim);
    margin-bottom: 1rem;
}

.hero-desc {
    font-size: 1.1rem;
    color: var(--text-dim);
    max-width: 600px;
    margin: 0 auto 2rem;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

/* Form elements */
input[type="number"],
input[type="text"],
select {
    width: 100%;
    padding: 0.6rem 0.75rem;
    background: var(--input);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text);
    font-size: 1rem;
    transition: all 0.2s;
    font-family: inherit;
}

input[type="number"]:focus,
input[type="text"]:focus,
select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(184, 64, 231, 0.15);
    background: #232323;
}

input[type="number"]:hover,
input[type="text"]:hover,
select:hover {
    border-color: #666;
}

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.2s;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

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

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(184, 64, 231, 0.3);
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

.container h1 {
    margin-bottom: 2rem;
    font-size: 2rem;
}

.container h2 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
}

/* Form groups */
.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.4rem;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-dim);
}

.btn-group {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

/* Tools grid */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

.tool-card {
    background: var(--card);
    border-radius: 8px;
    padding: 1.5rem;
    border: 1px solid var(--border);
    transition: transform 0.2s, box-shadow 0.2s;
}

.tool-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 4px 16px rgba(0,0,0,0.3);
}

.tool-card h3 {
    margin-bottom: 0.5rem;
    color: var(--primary);
}

.tool-card p {
    color: var(--text-dim);
    margin-bottom: 1rem;
}

/* Content card */
.content-card {
    background: var(--card);
    border-radius: 8px;
    padding: 2rem;
    border: 1px solid var(--border);
}

/* Footer */
.footer {
    background: var(--card);
    border-top: 1px solid var(--border);
    padding: 2rem;
    text-align: center;
    color: var(--text-dim);
    margin-top: 4rem;
}

/* Responsive */
@media (max-width: 768px) {
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .nav-links {
        gap: 1rem;
    }
}