/* Auth Pages - Dark Theme Default */
:root {
    --auth-bg-color: rgba(30, 30, 30, 0.6);
    --auth-backdrop-blur: 16px;
    --input-bg: rgba(0, 0, 0, 0.3);
}

.auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    position: relative;
}

/* Back Button */
.auth-back {
    position: fixed;
    top: 2rem;
    left: 2rem;
    padding: 0.75rem 1.5rem;
    background: rgba(42, 42, 42, 0.8);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s;
    z-index: 100;
}

.auth-back:hover {
    background: rgba(42, 42, 42, 0.95);
    transform: translateX(-5px);
}

.auth-container {
    width: 100%;
    max-width: 420px;
    background: var(--auth-bg-color);
    backdrop-filter: blur(var(--auth-backdrop-blur));
    -webkit-backdrop-filter: blur(var(--auth-backdrop-blur));
    padding: 3rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    animation: fadeInUp 0.4s ease-out;
}

.auth-header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.auth-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.auth-subtitle {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.auth-logo {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-label {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-left: 2px;
}

.input-help {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.form-input {
    width: 100%;
    padding: 0.875rem 1rem;
    background: var(--input-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: white;
    font-size: 1rem;
    transition: all 0.2s ease;
}

.form-input:focus {
    outline: none;
    border-color: var(--primary);
    background: rgba(0, 0, 0, 0.5);
    box-shadow: 0 0 0 2px rgba(102, 126, 234, 0.2);
}

.form-input::placeholder {
    color: rgba(255, 255, 255, 0.2);
}

.btn-auth {
    margin-top: 1rem;
    padding: 1rem;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn-auth:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-auth:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.auth-footer {
    margin-top: 2rem;
    text-align: center;
    border-top: 1px solid var(--border);
    padding-top: 1.5rem;
}

.auth-footer-text {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.auth-link {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

.auth-link:hover {
    color: #8fa1ff;
    text-decoration: underline;
}

.auth-error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
    color: #ef4444;
    padding: 0.75rem;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    display: none;
    align-items: center;
    gap: 0.5rem;
}

.auth-error.visible {
    display: flex;
}