:root {
    --bg-color: #0a0a0a;
    --panel-bg: #121212;
    --accent-red: #ff1744;
    --accent-cyan: #00e5ff;
    --text-main: #ffffff;
    --text-muted: #888888;
    --border-color: #333333;
}

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

body {
    font-family: 'Inter', 'Noto Sans JP', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    overflow-x: hidden;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 40px;
    border-bottom: 1px solid var(--border-color);
    background: rgba(10, 10, 10, 0.9);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}

.logo h1 {
    font-family: 'Noto Sans JP', sans-serif;
    color: var(--accent-red);
    font-size: 1.5rem;
    letter-spacing: 2px;
}

.logo p {
    font-family: 'Orbitron', sans-serif;
    font-size: 0.7rem;
    color: var(--accent-cyan);
    letter-spacing: 3px;
}

nav button {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-main);
    padding: 10px 20px;
    margin-left: 10px;
    cursor: pointer;
    text-transform: uppercase;
    font-family: 'Orbitron', sans-serif;
    font-size: 0.8rem;
    transition: all 0.3s;
}

nav button:hover, nav button.active {
    background: var(--accent-red);
    border-color: var(--accent-red);
}

#hero {
    height: 60vh;
    background: linear-gradient(rgba(0,0,0,0.7), rgba(0,0,0,0.9)), url('https://images.unsplash.com/photo-1538965883825-548204922b50?auto=format&fit=crop&w=1600&q=80') center/cover;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    border-bottom: 4px solid var(--accent-red);
}

.hero-content h2 {
    font-family: 'Orbitron', sans-serif;
    font-size: 4rem;
    color: #fff;
    text-shadow: 0 0 20px var(--accent-red);
    margin-bottom: 20px;
}

.hero-content p {
    font-size: 1.2rem;
    color: var(--accent-cyan);
}

main {
    padding: 60px 40px;
    max-width: 1200px;
    margin: 0 auto;
}

.section.hidden {
    display: none;
}

h3 {
    font-family: 'Orbitron', sans-serif;
    color: var(--accent-cyan);
    margin-bottom: 30px;
    border-left: 4px solid var(--accent-red);
    padding-left: 15px;
}

.grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.card {
    background: var(--panel-bg);
    border: 1px solid var(--border-color);
    padding: 25px;
    border-radius: 4px;
    transition: transform 0.3s;
}

.card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-red);
}

.card-title {
    font-size: 1.4rem;
    font-weight: bold;
    margin-bottom: 10px;
}

.card-details {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 15px;
}

.card-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: 'Orbitron', sans-serif;
    font-size: 0.8rem;
}

.status {
    color: var(--accent-cyan);
    border: 1px solid var(--accent-cyan);
    padding: 2px 8px;
}

.form-card {
    background: var(--panel-bg);
    padding: 40px;
    border: 1px solid var(--border-color);
    max-width: 500px;
    margin: 0 auto;
}

.input-group {
    margin-bottom: 20px;
}

.input-group label {
    display: block;
    margin-bottom: 8px;
    font-family: 'Orbitron', sans-serif;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.input-group input, 
.input-group select {
    width: 100%;
    padding: 12px;
    background: #1e1e1e;
    border: 1px solid var(--border-color);
    color: white;
    font-size: 1rem;
}

.input-group input:focus, 
.input-group select:focus {
    outline: none;
    border-color: var(--accent-cyan);
}

.input-row {
    display: flex;
    gap: 15px;
}

.btn-primary {
    width: 100%;
    padding: 15px;
    background: var(--accent-red);
    color: white;
    border: none;
    font-family: 'Orbitron', sans-serif;
    font-weight: bold;
    cursor: pointer;
    text-transform: uppercase;
}

.btn-primary:hover {
    background: #d50000;
}

.btn-secondary {
    width: 100%;
    padding: 15px;
    background: transparent;
    color: var(--text-muted);
    border: 1px solid var(--border-color);
    margin-top: 10px;
    cursor: pointer;
}

.participants-bar {
    height: 4px;
    background: #333;
    margin-top: 15px;
    position: relative;
}

.participants-fill {
    height: 100%;
    background: var(--accent-cyan);
    transition: width 0.3s;
}

footer {
    text-align: center;
    padding: 40px;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-family: 'Orbitron', sans-serif;
    font-size: 0.8rem;
}