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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background-color: var(--primary-color);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.auth-container {
    width: 100%;
    max-width: 420px;
}

.back-link {
    display: inline-block;
    color: var(--text-secondary);
    text-decoration: none;
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
    transition: color 0.2s;
}

.back-link:hover {
    color: var(--text-primary-hover);
}

.auth-card {
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2.5rem;
}

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

.auth-header h1 {
    font-size: 2rem;
    color: var(--heading-primary);
    margin-bottom: 0.5rem;
}

.auth-header h1 span {
    color: var(--primary-accent);
}

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

.auth-error {
    background-color: rgba(255, 122, 122, 0.1);
    border: 1px solid var(--error-color);
    color: var(--error-color);
    padding: 0.75rem 1rem;
    border-radius: 8px;
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
    text-align: center;
}

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

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.form-group label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--heading-secondary);
}

.form-group input {
    padding: 0.75rem 1rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background-color: var(--second-surface-color);
    color: var(--text-primary);
    font-size: 1rem;
    transition: border-color 0.2s;
    outline: none;
}

.form-group input::placeholder {
    color: var(--text-secondary);
    opacity: 0.6;
}

.form-group input:focus {
    border-color: var(--primary-accent);
}

.btn {
    padding: 0.875rem 2rem;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background-color: var(--primary-accent);
    color: var(--primary-color);
    box-shadow: var(--accent-inset-shadow);
}

.btn-primary:hover {
    background-color: var(--primary-accent-hover);
    box-shadow: var(--accent-border-glow);
}

.auth-switch {
    text-align: center;
    margin-top: 1.5rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.auth-switch a {
    color: var(--primary-accent);
    text-decoration: none;
    font-weight: 600;
}

.auth-switch a:hover {
    text-decoration: underline;
}