/**
 * TideTrack Frontend - Authentication Styles
 */

/* ============================================
   AUTH OVERLAY
   ============================================ */

.auth-overlay {
    position: fixed;
    inset: 0;
    z-index: 20000;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-dark);
    background: linear-gradient(135deg, var(--color-bg-dark) 0%, var(--color-primary-dark) 100%);
}

.auth-overlay.hidden {
    display: none;
}

/* ============================================
   AUTH CARD
   ============================================ */

.auth-card {
    background: white;
    border-radius: var(--radius-xl, 16px);
    padding: 2.5rem 2rem;
    width: 100%;
    max-width: 380px;
    margin: 1rem;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

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

.auth-card__logo {
    font-size: 3rem;
    display: block;
    margin-bottom: 0.5rem;
}

.auth-card__title {
    font-family: var(--font-primary);
    font-weight: var(--font-bold);
    font-size: var(--text-2xl);
    color: var(--color-primary);
    margin: 0;
}

.auth-card__subtitle {
    font-family: var(--font-primary);
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    margin: 0.25rem 0 0;
}

/* ============================================
   AUTH STEPS
   ============================================ */

.auth-step {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.auth-step.hidden {
    display: none;
}

.auth-input {
    font-size: var(--text-base) !important;
    padding: 0.75rem 1rem !important;
    text-align: center;
    letter-spacing: 0.05em;
}

.auth-otp-input {
    font-family: var(--font-mono);
    font-size: var(--text-xl) !important;
    letter-spacing: 0.3em;
}

.auth-btn {
    width: 100%;
    padding: 0.75rem 1rem !important;
    font-size: var(--text-base) !important;
    margin-top: 0.25rem;
}

.auth-btn-secondary {
    width: 100%;
    padding: 0.5rem 1rem !important;
    font-size: var(--text-sm) !important;
}

.auth-hint {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    text-align: center;
    margin: 0;
}

/* ============================================
   AUTH ERROR
   ============================================ */

.auth-error {
    margin-top: 1rem;
    padding: 0.75rem 1rem;
    background: #FFF5F5;
    border: 1px solid var(--color-error);
    border-radius: var(--radius-md, 8px);
    color: var(--color-error);
    font-size: var(--text-sm);
    text-align: center;
}

.auth-error.hidden {
    display: none;
}

/* ============================================
   AUTH LOADING
   ============================================ */

.auth-loading {
    display: flex;
    justify-content: center;
    margin-top: 1rem;
}

.auth-loading.hidden {
    display: none;
}

.auth-spinner {
    width: 28px;
    height: 28px;
    border: 3px solid var(--color-bg-light);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: auth-spin 0.8s linear infinite;
}

@keyframes auth-spin {
    to { transform: rotate(360deg); }
}