/* Auth — Spacer-inspired split layout */
:root {
    --auth-blue-dark: #1a56db;
    --auth-blue-mid: #2563eb;
    --auth-blue-light: #60a5fa;
    --auth-blue-pale: #dbeafe;
    --auth-text-dark: #1e293b;
    --auth-text-muted: #64748b;
    --auth-border: #93c5fd;
    --auth-radius-card: 1.25rem;
    --auth-font: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

.auth-body {
    margin: 0;
    min-height: 100vh;
    font-family: var(--auth-font);
    background: #e8edf5;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: clamp(0.75rem, 3vw, 2rem);
    -webkit-font-smoothing: antialiased;
}

.auth-card {
    display: flex;
    width: 100%;
    max-width: 980px;
    min-height: min(640px, 92vh);
    max-height: 94vh;
    background: #fff;
    border-radius: var(--auth-radius-card);
    box-shadow:
        0 4px 6px -1px rgba(0, 0, 0, 0.06),
        0 24px 48px -12px rgba(26, 86, 219, 0.22);
    overflow: hidden;
    position: relative;
}

.auth-card.auth-card--wide {
    max-width: 1140px;
}

.auth-card.auth-card--wide .auth-brand {
    flex: 0 0 34%;
}

.auth-card.auth-card--wide .auth-form-panel {
    flex: 1 1 66%;
}

/* —— Brand panel (left / mobile header) —— */
.auth-brand {
    position: relative;
    flex: 0 0 42%;
    min-width: 0;
    background: linear-gradient(165deg, #0f3db8 0%, #2563eb 42%, #4f9cf9 100%);
    color: #fff;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-between;
    padding: clamp(1.75rem, 4vw, 2.75rem) clamp(1.5rem, 3vw, 2rem);
    text-align: center;
    z-index: 1;
}

.auth-brand-welcome {
    font-size: clamp(1rem, 2vw, 1.15rem);
    font-weight: 400;
    opacity: 0.95;
    margin: 0 0 0.5rem;
    letter-spacing: 0.02em;
}

.auth-brand-logo-wrap {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.65rem;
    margin: auto 0;
    padding: 1rem 0;
}

.auth-brand-logo-circle {
    width: clamp(4.5rem, 10vw, 5.5rem);
    height: clamp(4.5rem, 10vw, 5.5rem);
    border-radius: 50%;
    background: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

.auth-brand-logo-circle i {
    font-size: clamp(1.75rem, 4vw, 2.25rem);
    color: var(--auth-blue-mid);
}

.auth-brand-name {
    font-size: clamp(1.35rem, 3vw, 1.65rem);
    font-weight: 700;
    letter-spacing: 0.04em;
    margin: 0;
}

.auth-brand-desc {
    font-size: clamp(0.8rem, 1.6vw, 0.9rem);
    line-height: 1.65;
    opacity: 0.88;
    max-width: 260px;
    margin: 0.75rem auto 0;
}

.auth-brand-footer {
    font-size: 0.65rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    opacity: 0.75;
    margin: 0;
}

/* Wavy edge */
.auth-brand-wave {
    position: absolute;
    top: 0;
    right: -1px;
    bottom: 0;
    width: 72px;
    pointer-events: none;
    z-index: 2;
}

.auth-brand-wave svg {
    height: 100%;
    width: 100%;
    display: block;
}

/* —— Form panel —— */
.auth-form-panel {
    flex: 1 1 58%;
    min-width: 0;
    display: flex;
    flex-direction: column;
    padding: clamp(1.5rem, 4vw, 2.5rem) clamp(1.5rem, 4vw, 2.75rem);
    overflow-y: auto;
    background: #fff;
}

.auth-form-panel::-webkit-scrollbar {
    width: 6px;
}

.auth-form-panel::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 3px;
}

.auth-form-heading {
    font-size: clamp(1.35rem, 3vw, 1.6rem);
    font-weight: 700;
    color: var(--auth-text-dark);
    margin: 0 0 1.5rem;
    letter-spacing: -0.02em;
}

/* Alerts */
.auth-form-panel .auth-alert {
    border-radius: 0.5rem;
    padding: 0.75rem 1rem;
    font-size: 0.875rem;
    margin-bottom: 1rem;
    border: none;
}

.auth-form-panel .auth-alert-success {
    background: #ecfdf5;
    color: #065f46;
}

.auth-form-panel .auth-alert-warning {
    background: #fffbeb;
    color: #92400e;
}

.auth-form-panel .auth-alert-danger {
    background: #fef2f2;
    color: #991b1b;
}

/* Underline fields */
.auth-field {
    margin-bottom: 1.35rem;
}

.auth-field label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--auth-text-dark);
    margin-bottom: 0.35rem;
}

.auth-field-input-wrap {
    position: relative;
    display: flex;
    align-items: flex-end;
}

.auth-field-input-wrap .form-control,
.auth-field-input-wrap .form-select,
.auth-field-input-wrap .captcha-math-input {
    flex: 1;
    border: none;
    border-bottom: 2px solid var(--auth-border);
    border-radius: 0;
    background: transparent;
    padding: 0.5rem 2rem 0.5rem 0;
    font-size: 0.9375rem;
    color: var(--auth-text-dark);
    box-shadow: none !important;
    min-height: 2.25rem;
}

.auth-field-input-wrap .form-control::placeholder,
.auth-field-input-wrap .captcha-math-input::placeholder {
    color: #94a3b8;
}

.auth-field-input-wrap .form-control:focus,
.auth-field-input-wrap .form-select:focus,
.auth-field-input-wrap .captcha-math-input:focus {
    border-bottom-color: var(--auth-blue-mid);
    outline: none;
}

.auth-field-input-wrap .form-control.is-invalid,
.auth-field-input-wrap .captcha-math-input.is-invalid {
    border-bottom-color: #dc3545;
}

.auth-field-check {
    position: absolute;
    right: 0;
    bottom: 0.55rem;
    color: var(--auth-blue-mid);
    font-size: 0.85rem;
    opacity: 0;
    transition: opacity 0.2s ease;
    pointer-events: none;
}

.auth-field-input-wrap.is-filled .auth-field-check {
    opacity: 1;
}

.auth-field .invalid-feedback {
    font-size: 0.8125rem;
    margin-top: 0.25rem;
}

/* Checkbox terms */
.auth-terms {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    margin: 1rem 0 1.5rem;
    font-size: 0.8125rem;
    color: var(--auth-text-muted);
    line-height: 1.45;
}

.auth-terms input[type='checkbox'] {
    width: 1rem;
    height: 1rem;
    margin-top: 0.15rem;
    flex-shrink: 0;
    accent-color: var(--auth-blue-mid);
    cursor: pointer;
}

.auth-terms a {
    color: var(--auth-blue-mid);
    text-decoration: none;
    font-weight: 500;
}

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

/* Remember row */
.auth-remember {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.25rem;
    font-size: 0.875rem;
    color: var(--auth-text-muted);
}

.auth-remember input {
    accent-color: var(--auth-blue-mid);
}

/* Pill buttons */
.auth-actions {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-top: 0.5rem;
}

.auth-btn {
    flex: 1 1 auto;
    min-width: 120px;
    padding: 0.75rem 1.5rem;
    border-radius: 50px;
    font-size: 0.9375rem;
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    border: 2px solid transparent;
    cursor: pointer;
    transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
}

.auth-btn-primary {
    background: linear-gradient(135deg, var(--auth-blue-dark) 0%, var(--auth-blue-mid) 100%);
    color: #fff;
    border-color: transparent;
}

.auth-btn-primary:hover:not(:disabled) {
    color: #fff;
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
}

.auth-btn-outline {
    background: #fff;
    color: var(--auth-text-dark);
    border-color: #cbd5e1;
}

.auth-btn-outline:hover {
    border-color: var(--auth-blue-mid);
    color: var(--auth-blue-mid);
    text-decoration: none;
}

.auth-btn:disabled {
    opacity: 0.55;
    cursor: not-allowed;
}

/* Captcha in auth style */
.auth-captcha-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--auth-text-dark);
    margin-bottom: 0.5rem;
    display: block;
}

.captcha-math-group {
    display: flex;
    gap: 0.5rem;
    align-items: stretch;
    width: 100%;
    min-width: 0;
    flex-wrap: wrap;
}

.captcha-math-inline {
    display: flex;
    align-items: center;
    flex-shrink: 0;
    padding: 0 0.75rem;
    background: var(--auth-blue-pale);
    border: none;
    border-bottom: 2px solid var(--auth-border);
    border-radius: 0;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--auth-text-dark);
    white-space: nowrap;
    min-height: 2.25rem;
}

.captcha-math-input {
    flex: 1 1 80px;
    min-width: 0;
}

.captcha-math-reload {
    flex-shrink: 0;
    padding: 0.5rem 0.75rem;
    border: none;
    border-bottom: 2px solid var(--auth-border);
    border-radius: 0;
    background: transparent;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--auth-blue-mid);
    cursor: pointer;
    min-height: 2.25rem;
}

.captcha-math-reload:hover {
    border-bottom-color: var(--auth-blue-mid);
}

/* Register: nested form overrides */
.auth-register-form .form-section-title {
    color: var(--auth-text-muted) !important;
    font-size: 0.6875rem !important;
    letter-spacing: 0.08em;
    border-bottom-color: #e2e8f0 !important;
    margin-top: 1.25rem !important;
}

.auth-register-form .form-section-title:first-of-type {
    margin-top: 0 !important;
}

.auth-register-form .form-label {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--auth-text-dark);
}

.auth-register-form .form-control,
.auth-register-form .form-select {
    border: none;
    border-bottom: 2px solid var(--auth-border);
    border-radius: 0;
    padding-left: 0;
    padding-right: 0;
    background: transparent;
    box-shadow: none !important;
}

.auth-register-form .form-control:focus,
.auth-register-form .form-select:focus {
    border-bottom-color: var(--auth-blue-mid);
}

.auth-register-form input[type='file'].form-control {
    border: 1px dashed var(--auth-border);
    border-radius: 0.5rem;
    padding: 0.5rem;
}

.auth-register-actions {
    margin-top: 1.5rem;
    padding-top: 1.25rem;
    border-top: 1px solid #e2e8f0;
}

/* Modal tweak */
.auth-modal .modal-content {
    border-radius: 1rem;
    border: none;
}

.auth-modal .auth-btn-primary {
    width: 100%;
}

/* Mobile */
@media (max-width: 767.98px) {
    .auth-body {
        padding: 0;
        align-items: stretch;
    }

    .auth-card {
        flex-direction: column;
        max-width: none;
        min-height: 100vh;
        max-height: none;
        border-radius: 0;
        box-shadow: none;
    }

    .auth-brand {
        flex: 0 0 auto;
        min-height: 220px;
        padding: 2rem 1.5rem 2.5rem;
    }

    .auth-brand-wave {
        right: 0;
        left: 0;
        top: auto;
        bottom: -1px;
        width: 100%;
        height: 48px;
    }

    .auth-brand-wave svg {
        width: 100%;
        height: 100%;
    }

    .auth-brand-desc,
    .auth-brand-footer {
        display: none;
    }

    .auth-form-panel {
        flex: 1;
        padding: 1.75rem 1.5rem 2rem;
    }
}

@media (min-width: 768px) {
    .auth-brand-wave-mobile {
        display: none;
    }
}