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

:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #1a1a2e;
    --bg-tertiary: #16213e;
    --accent-purple: #8b5cf6;
    --accent-purple-dark: #6d28d9;
    --accent-purple-light: #a78bfa;
    --text-primary: #ffffff;
    --text-secondary: #b8b8d4;
    --text-muted: #6b7280;
    --border-color: #2d2d44;
    --error: #ef4444;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-container {
    width: 100%;
    max-width: 420px;
    padding: 2rem;
}

.login-box {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2.5rem;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

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

.logo h1 {
    font-size: 2.5rem;
    background: linear-gradient(135deg, var(--accent-purple), var(--accent-purple-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

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

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

.form-group input {
    width: 100%;
    padding: 0.75rem 1rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: border-color 0.2s;
}

.form-group input:focus {
    outline: none;
    border-color: var(--accent-purple);
}

.btn-primary,
.btn-secondary {
    width: 100%;
    padding: 0.75rem 1rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    margin-bottom: 1rem;
}

.btn-primary {
    background: var(--accent-purple);
    color: white;
}

.btn-primary:hover {
    background: var(--accent-purple-dark);
    transform: translateY(-1px);
}

.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--bg-secondary);
    border-color: var(--accent-purple);
}

.divider {
    text-align: center;
    margin: 1.5rem 0;
    position: relative;
}

.divider::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--border-color);
}

.divider span {
    background: var(--bg-secondary);
    padding: 0 1rem;
    color: var(--text-muted);
    font-size: 0.85rem;
    position: relative;
}

.error-message {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--error);
    color: var(--error);
    padding: 0.75rem 1rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
}

.success-message {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid #10b981;
    color: #10b981;
    padding: 0.75rem 1rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
}

.registration-disabled-message {
    background: rgba(107, 114, 128, 0.1);
    border: 1px solid var(--text-muted);
    color: var(--text-muted);
    padding: 0.75rem 1rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    text-align: center;
    font-size: 0.9rem;
}

.registration-disabled-message p {
    margin: 0;
}

#register-form.disabled {
    opacity: 0.5;
    pointer-events: none;
}

#register-form.disabled input,
#register-form.disabled button {
    cursor: not-allowed;
}

@media (max-width: 480px) {
    .login-container {
        padding: 1rem;
    }
    
    .login-box {
        padding: 2rem;
    }
    
    .logo h1 {
        font-size: 2rem;
    }
}