/* =========================================
   BookHive Auth Pages (shared)
   ========================================= */

body {
    background: var(--bg-secondary);
    min-height: 100vh;
}

.auth-main {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: calc(80px + var(--spacing-2xl)) var(--spacing-md) var(--spacing-2xl);
}

.auth-card {
    background: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    padding: var(--spacing-2xl);
    width: 100%;
    max-width: 440px;
}

.auth-card-wide {
    max-width: 520px;
}

.auth-logo {
    display: flex;
    justify-content: center;
    margin-bottom: var(--spacing-xl);
}

/* Role switcher tabs */
.auth-tabs {
    display: flex;
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    margin-bottom: var(--spacing-xl);
}

.auth-tab {
    flex: 1;
    padding: 0.625rem 1rem;
    text-align: center;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-decoration: none;
    background: transparent;
    transition: all var(--transition-base);
    border: none;
    cursor: pointer;
    font-family: var(--font-family);
}

.auth-tab + .auth-tab {
    border-left: 1.5px solid var(--border-color);
}

.auth-tab.active {
    background: var(--gradient-primary);
    color: white;
}

.auth-tab:not(.active):hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

/* Headings */
.auth-heading {
    font-size: 1.375rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
    text-align: center;
}

.auth-subheading {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: var(--spacing-xl);
    line-height: 1.6;
}

/* Notice boxes */
.auth-notice {
    background: rgba(196, 106, 30, 0.07);
    border: 1px solid rgba(196, 106, 30, 0.25);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.auth-notice strong {
    color: var(--primary-dark);
    display: block;
    margin-bottom: 0.25rem;
}

.auth-notice-info {
    background: rgba(59, 130, 246, 0.06);
    border-color: rgba(59, 130, 246, 0.2);
}

.auth-notice-info strong {
    color: #1d4ed8;
}

/* Form fields */
.auth-field {
    margin-bottom: var(--spacing-md);
}

.auth-field-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.auth-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
}

.auth-input {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-family: var(--font-family);
    color: var(--text-primary);
    background: var(--bg-primary);
    transition: border-color var(--transition-base);
    box-sizing: border-box;
}

.auth-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.auth-input::placeholder {
    color: var(--text-light);
}

/* Section divider */
.auth-section-label {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-light);
    margin: var(--spacing-lg) 0 var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.auth-section-label::before,
.auth-section-label::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border-color);
}

/* Card input with icon */
.auth-input-icon-wrap {
    position: relative;
}

.auth-input-icon-wrap .auth-input {
    padding-right: 2.75rem;
}

.auth-input-icon {
    position: absolute;
    right: 0.875rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-light);
    pointer-events: none;
}

/* Order summary */
.auth-order-summary {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    font-size: 0.9375rem;
}

.auth-order-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.25rem 0;
}

.auth-order-row + .auth-order-row {
    border-top: 1px solid var(--border-color);
    margin-top: 0.5rem;
    padding-top: 0.625rem;
}

.auth-order-total {
    font-weight: 700;
    color: var(--text-primary);
}

.auth-order-note {
    font-size: 0.8rem;
    color: var(--text-light);
    margin-top: 0.5rem;
}

/* Invitation info box */
.auth-invite-box {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-xl);
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.auth-invite-icon {
    width: 52px;
    height: 52px;
    background: rgba(196, 106, 30, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
    color: var(--primary-color);
}

.auth-invite-title {
    font-size: 1.0625rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.auth-invite-description {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.65;
}

.auth-invite-email {
    display: inline-block;
    margin-top: var(--spacing-md);
    font-weight: 600;
    color: var(--primary-color);
    text-decoration: none;
    font-size: 0.9375rem;
}

.auth-invite-email:hover {
    text-decoration: underline;
}

/* Submit button */
.auth-submit {
    width: 100%;
    padding: 1rem;
    background: var(--gradient-primary);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    margin-top: var(--spacing-md);
    transition: all var(--transition-base);
    font-family: var(--font-family);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.auth-submit:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.auth-submit:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

/* Error / success messages */
.auth-error {
    display: none;
    background: rgba(239, 68, 68, 0.06);
    border: 1px solid rgba(239, 68, 68, 0.25);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin-top: var(--spacing-md);
    font-size: 0.875rem;
    color: #b91c1c;
    line-height: 1.6;
    text-align: center;
}

.auth-error.show { display: block; }

.auth-error a { color: #b91c1c; }

/* Footer links */
.auth-footer {
    text-align: center;
    margin-top: var(--spacing-lg);
    font-size: 0.875rem;
    color: var(--text-light);
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.auth-footer a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-base);
}

.auth-footer a:hover {
    color: var(--primary-color);
}

.auth-footer-divider {
    color: var(--border-color);
    margin: 0 0.5rem;
}

/* Lock icon badge */
.auth-secure-badge {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.375rem;
    font-size: 0.8rem;
    color: var(--text-light);
    margin-top: var(--spacing-sm);
}

@media (max-width: 480px) {
    .auth-card {
        padding: var(--spacing-xl) var(--spacing-md);
    }

    .auth-field-row {
        grid-template-columns: 1fr;
    }
}