/* 用户兑换页面样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #6366f1;
    --primary-glow: rgba(99, 102, 241, 0.4);
    --bg-main: #0b0f1a;
    --bg-glass-heavy: rgba(15, 23, 42, 0.85);
    --text-main: #f8fafc;
    --text-dim: #94a3b8;
    --text-muted: #64748b;
    --border-glass: rgba(255, 255, 255, 0.08);
    --border-highlight: rgba(255, 255, 255, 0.15);
    --success: #10b981;
    --danger: #ef4444;
    --shadow-lg: 0 10px 25px -5px rgba(0, 0, 0, 0.5);
    --radius-md: 10px;
    --radius-lg: 16px;
}

body {
    font-family: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-main);
    background-image:
        radial-gradient(at 0% 0%, rgba(99, 102, 241, 0.15) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(168, 85, 247, 0.1) 0px, transparent 50%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    color: var(--text-main);
}

.container {
    max-width: 600px;
    width: 100%;
}

.header {
    text-align: center;
    margin-bottom: 2rem;
}

.header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.subtitle {
    font-size: 1.1rem;
    color: var(--text-dim);
}

.spots-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(255, 255, 255, 0.1);
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.9rem;
    color: var(--primary);
    margin-top: 10px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.step {
    display: none;
}

.step.active {
    display: block;
    animation: fadeIn 0.3s ease-in;
}

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

.card {
    background-color: var(--bg-glass-heavy);
    backdrop-filter: blur(24px);
    border: 1px solid var(--border-highlight);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

.card h2 {
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--text-dim);
}

.form-input {
    width: 100%;
    padding: 0.8rem 1rem;
    background-color: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    color: var(--text-main);
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-glow);
}

.form-help {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 0.5rem;
}

.btn {
    padding: 0.8rem 1.5rem;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), #a855f7);
    color: white;
    width: 100%;
    box-shadow: 0 4px 15px var(--primary-glow);
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--primary-glow);
}

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-secondary {
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-glass);
    color: var(--text-main);
}

/* 结果显示 */
.result-success, .result-error {
    text-align: center;
    padding: 2rem 0;
}

.result-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
}

.result-success .result-icon { color: var(--success); }
.result-error .result-icon { color: var(--danger); }

.result-title {
    font-size: 1.8rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
}

.result-success .result-title { color: var(--success); }
.result-error .result-title { color: var(--danger); }

.result-message {
    font-size: 1rem;
    color: var(--text-dim);
    margin-bottom: 2rem;
}

.result-details {
    background-color: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    margin-bottom: 2rem;
    text-align: left;
}

.result-detail-item {
    display: flex;
    justify-content: space-between;
    padding: 0.8rem 0;
    border-bottom: 1px solid var(--border-glass);
}

.result-detail-item:last-child {
    border-bottom: none;
}

.result-detail-label {
    color: var(--text-muted);
}

.result-detail-value {
    color: var(--text-main);
    font-weight: 600;
}

/* Toast */
.toast {
    position: fixed;
    top: 2rem;
    right: 2rem;
    padding: 1rem 1.5rem;
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    display: none;
    z-index: 1000;
}

.toast.show {
    display: block;
    animation: slideIn 0.3s ease-out;
}

.toast.success { background-color: var(--success); color: white; }
.toast.error { background-color: var(--danger); color: white; }
.toast.info { background-color: var(--primary); color: white; }

@keyframes slideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

@media (max-width: 768px) {
    body { padding: 1rem; }
    .header h1 { font-size: 2rem; }
    .card { padding: 1.5rem; }
}