/* ============================================================
   Ultra-Premium Auth Pages — SupplySphere Design System
   Split-screen: Branded panel (left) + Clean form (right)
   ============================================================ */

/* ---- Layout ---- */
.auth-split-layout {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1fr 1fr;
}

/* ---- Brand Panel (left) ---- */
.auth-brand-panel {
    background: var(--gradient-hero);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-16) var(--space-10);
}

.auth-brand-panel::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(circle at 20% 30%, rgba(255,255,255,0.06) 0%, transparent 45%),
        radial-gradient(circle at 80% 80%, rgba(255,255,255,0.04) 0%, transparent 40%);
    pointer-events: none;
}

.auth-brand-panel .page-hero-grid {
    opacity: 0.25;
}

.auth-brand-content {
    position: relative;
    z-index: 2;
    color: var(--neutral-0);
    max-width: 420px;
}

.auth-brand-wordmark {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-12);
}

.auth-brand-icon {
    width: 44px;
    height: 44px;
    background: rgba(255,255,255,0.15);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: white;
    backdrop-filter: blur(8px);
}

.auth-brand-name {
    font-family: var(--font-heading);
    font-size: 1.375rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    color: white;
}

.auth-brand-headline {
    font-family: var(--font-heading);
    font-size: clamp(1.75rem, 2.5vw, 2.5rem);
    font-weight: 800;
    letter-spacing: -0.04em;
    line-height: 1.15;
    color: white;
    margin-bottom: var(--space-5);
}

.auth-brand-headline span {
    color: rgba(255,255,255,0.65);
}

.auth-brand-desc {
    font-size: 1rem;
    line-height: 1.7;
    color: rgba(255,255,255,0.75);
    margin-bottom: var(--space-10);
}

.auth-brand-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-4);
    border-top: 1px solid rgba(255,255,255,0.12);
    padding-top: var(--space-8);
}

.auth-stat-item {
    text-align: center;
}

.auth-stat-value {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    font-weight: 800;
    letter-spacing: -0.04em;
    color: white;
    display: block;
}

.auth-stat-label {
    font-size: 0.75rem;
    color: rgba(255,255,255,0.6);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-top: 2px;
    display: block;
}

.auth-trust-badges {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3);
    margin-top: var(--space-8);
}

.auth-trust-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.15);
    color: rgba(255,255,255,0.85);
    font-size: 0.75rem;
    font-weight: 600;
    padding: 5px 12px;
    border-radius: var(--radius-full);
    backdrop-filter: blur(6px);
}

/* ---- Form Panel (right) ---- */
.auth-form-panel {
    background: var(--neutral-50);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-10) var(--space-8);
    overflow-y: auto;
}

.auth-form-container {
    width: 100%;
    max-width: 440px;
    animation: authSlideIn 0.5s var(--ease-smooth) both;
}

@keyframes authSlideIn {
    from { opacity: 0; transform: translateY(16px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ---- Form Header ---- */
.auth-form-header {
    margin-bottom: var(--space-8);
}

.auth-form-icon {
    width: 52px;
    height: 52px;
    background: var(--gradient-brand);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.375rem;
    color: white;
    box-shadow: var(--shadow-brand);
    margin-bottom: var(--space-5);
}

.auth-form-title {
    font-family: var(--font-heading);
    font-size: 1.875rem;
    font-weight: 800;
    letter-spacing: -0.04em;
    color: var(--neutral-900);
    margin-bottom: var(--space-2);
    line-height: 1.2;
}

.auth-form-subtitle {
    font-size: 0.9375rem;
    color: var(--neutral-500);
    line-height: 1.6;
}

/* ---- Form Card ---- */
.auth-card {
    background: var(--neutral-0);
    border-radius: var(--radius-2xl);
    border: 1px solid var(--neutral-200);
    padding: var(--space-8);
    box-shadow: var(--shadow-3);
    animation: authSlideIn 0.5s var(--ease-smooth) both;
}

/* ---- Inputs ---- */
.auth-form-group {
    margin-bottom: var(--space-5);
}

.auth-form-label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8125rem;
    font-weight: 700;
    color: var(--neutral-700);
    margin-bottom: var(--space-2);
    letter-spacing: 0.01em;
    text-transform: uppercase;
}

.auth-form-label i {
    color: var(--brand-primary);
    font-size: 0.75rem;
}

.auth-form-input {
    width: 100%;
    padding: 13px 16px;
    font-size: 0.9375rem;
    font-family: var(--font-primary);
    border: 1.5px solid var(--neutral-200);
    border-radius: var(--radius-md);
    background: var(--neutral-0);
    color: var(--neutral-900);
    transition: all var(--transition-base) ease;
    outline: none;
}

.auth-form-input:hover {
    border-color: var(--neutral-300);
}

.auth-form-input:focus {
    border-color: var(--brand-primary);
    box-shadow: 0 0 0 3px rgba(37,99,235,0.1);
}

.auth-form-input::placeholder {
    color: var(--neutral-400);
}

/* ---- Password toggle wrapper ---- */
.auth-input-wrapper {
    position: relative;
}

.auth-input-toggle {
    position: absolute;
    right: 14px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--neutral-400);
    cursor: pointer;
    padding: 4px;
    border-radius: var(--radius-sm);
    transition: color var(--transition-fast);
    font-size: 0.875rem;
}

.auth-input-toggle:hover { color: var(--neutral-700); }

/* ---- Remember me / checkbox ---- */
.auth-checkbox-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin: var(--space-4) 0 var(--space-6);
    flex-wrap: wrap;
    gap: var(--space-2);
}

.auth-checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: 0.875rem;
    color: var(--neutral-700);
    cursor: pointer;
    user-select: none;
}

.auth-checkbox-label input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--brand-primary);
    border-radius: 4px;
    cursor: pointer;
}

/* ---- Submit button ---- */
.auth-submit-btn {
    width: 100%;
    padding: 14px 24px;
    background: var(--gradient-brand);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-heading);
    font-size: 0.9375rem;
    font-weight: 700;
    cursor: pointer;
    transition: all var(--transition-base) var(--ease-spring);
    box-shadow: var(--shadow-brand);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    letter-spacing: -0.01em;
}

.auth-submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-brand-lg);
}

.auth-submit-btn:active {
    transform: translateY(0);
}

/* ---- Validation ---- */
.auth-validation-error {
    background: rgba(239,68,68,0.06);
    border: 1px solid rgba(239,68,68,0.2);
    border-radius: var(--radius-md);
    padding: var(--space-3) var(--space-4);
    color: #dc2626;
    font-size: 0.875rem;
    margin-bottom: var(--space-5);
}

.auth-field-error {
    font-size: 0.8125rem;
    color: #dc2626;
    margin-top: var(--space-1);
    display: flex;
    align-items: center;
    gap: 4px;
}

/* ---- Divider ---- */
.auth-divider {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin: var(--space-6) 0;
    color: var(--neutral-400);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.auth-divider::before,
.auth-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--neutral-200);
}

/* ---- External login buttons ---- */
.identity-external-logins {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.identity-external-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
    padding: 11px var(--space-4);
    border: 1.5px solid var(--neutral-200);
    border-radius: var(--radius-md);
    font-family: var(--font-primary);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base) ease;
    background: var(--neutral-0);
    color: var(--neutral-700);
    width: 100%;
}

.identity-external-btn:hover {
    border-color: var(--neutral-300);
    background: var(--neutral-50);
    transform: translateY(-1px);
    box-shadow: var(--shadow-2);
}

.identity-external-btn i { font-size: 1.125rem; }

.identity-external-btn-google  { color: #DB4437; }
.identity-external-btn-microsoft { color: #00A4EF; }
.identity-external-btn-facebook { color: #1877F2; }
.identity-external-btn-twitter  { color: #1DA1F2; }
.identity-external-btn-linkedin { color: #0A66C2; }
.identity-external-btn-github   { color: #24292E; }
.identity-external-btn-apple    { color: #000; }

/* ---- Footer / links ---- */
.auth-form-footer {
    text-align: center;
    margin-top: var(--space-6);
    padding-top: var(--space-5);
    border-top: 1px solid var(--neutral-200);
}

.auth-form-footer p {
    font-size: 0.9rem;
    color: var(--neutral-500);
}

.auth-form-footer a {
    color: var(--brand-primary);
    font-weight: 700;
    text-decoration: none;
    transition: color var(--transition-fast);
}

.auth-form-footer a:hover {
    color: var(--brand-primary-dark);
    text-decoration: underline;
}

.auth-links-row {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-top: var(--space-4);
}

.auth-link-sm {
    font-size: 0.8125rem;
    color: var(--brand-primary);
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.auth-link-sm:hover {
    background: var(--brand-primary-pale);
    color: var(--brand-primary-dark);
}

/* ---- Status icon variants ---- */
.auth-icon-success { background: linear-gradient(135deg, #10B981 0%, #059669 100%); box-shadow: 0 8px 20px rgba(16,185,129,0.3); }
.auth-icon-error   { background: linear-gradient(135deg, #EF4444 0%, #DC2626 100%); box-shadow: 0 8px 20px rgba(239,68,68,0.3); }
.auth-icon-warning { background: linear-gradient(135deg, #F59E0B 0%, #D97706 100%); box-shadow: 0 8px 20px rgba(245,158,11,0.3); }
.auth-icon-success i, .auth-icon-error i, .auth-icon-warning i { font-size: 1.75rem; color: white; }

/* ---- Backward compat shims ---- */
.auth-page-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-hero);
    padding: var(--space-8) var(--space-4);
}

.auth-container { max-width: 480px; width: 100%; }

.auth-logo { text-align: center; margin-bottom: var(--space-6); }

.auth-logo-icon {
    width: 64px; height: 64px;
    background: var(--gradient-brand);
    border-radius: var(--radius-lg);
    display: inline-flex; align-items: center; justify-content: center;
    margin-bottom: var(--space-4);
    box-shadow: var(--shadow-brand);
}
.auth-logo-icon i { font-size: 2rem; color: white; }

.auth-title {
    font-family: var(--font-heading);
    font-size: 1.875rem; font-weight: 800; letter-spacing: -0.04em;
    color: var(--neutral-900); text-align: center; margin-bottom: var(--space-2);
}
.auth-subtitle { text-align: center; color: var(--neutral-500); font-size: 0.9375rem; margin-bottom: var(--space-6); }

.auth-footer { text-align: center; margin-top: var(--space-5); padding-top: var(--space-5); border-top: 1px solid var(--neutral-200); }
.auth-footer-text { color: var(--neutral-500); font-size: 0.9rem; margin-bottom: var(--space-2); }
.auth-footer-link { color: var(--brand-primary); font-weight: 700; text-decoration: none; }
.auth-footer-link:hover { color: var(--brand-primary-dark); text-decoration: underline; }

.auth-links-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-3); margin-top: var(--space-4); }
.auth-link-small {
    color: var(--brand-primary); text-decoration: none; font-size: 0.875rem; font-weight: 600;
    text-align: center; padding: var(--space-2); border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}
.auth-link-small:hover { background: var(--brand-primary-pale); color: var(--brand-primary-dark); }

.auth-page-wrapper .identity-form-input,
.auth-card .identity-form-input {
    width: 100%; padding: 13px 16px; font-size: 0.9375rem;
    font-family: var(--font-primary);
    border: 1.5px solid var(--neutral-200); border-radius: var(--radius-md);
    background: var(--neutral-0); color: var(--neutral-900);
    transition: all var(--transition-base) ease; outline: none;
}
.auth-page-wrapper .identity-form-input:focus,
.auth-card .identity-form-input:focus {
    border-color: var(--brand-primary);
    box-shadow: 0 0 0 3px rgba(37,99,235,0.1);
}
.auth-page-wrapper .identity-form-input::placeholder { color: var(--neutral-400); }

.auth-page-wrapper .identity-form-label,
.auth-card .identity-form-label {
    display: flex; align-items: center; gap: 6px;
    font-size: 0.8125rem; font-weight: 700; color: var(--neutral-700);
    margin-bottom: var(--space-2);
    text-transform: uppercase; letter-spacing: 0.01em;
}
.auth-page-wrapper .identity-form-label i,
.auth-card .identity-form-label i { color: var(--brand-primary); font-size: 0.75rem; }

.auth-page-wrapper .identity-btn-primary,
.auth-card .identity-btn-primary {
    width: 100%; padding: 14px 24px;
    background: var(--gradient-brand); color: white; border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-heading); font-size: 0.9375rem; font-weight: 700;
    cursor: pointer; transition: all var(--transition-base) var(--ease-spring);
    box-shadow: var(--shadow-brand);
    display: flex; align-items: center; justify-content: center;
    gap: var(--space-2);
}
.auth-page-wrapper .identity-btn-primary:hover,
.auth-card .identity-btn-primary:hover { transform: translateY(-2px); box-shadow: var(--shadow-brand-lg); }

.auth-page-wrapper .identity-checkbox,
.auth-card .identity-checkbox {
    display: flex; align-items: center; gap: var(--space-2); margin: var(--space-4) 0;
}
.auth-page-wrapper .identity-checkbox input[type="checkbox"],
.auth-card .identity-checkbox input[type="checkbox"] {
    width: 16px; height: 16px; accent-color: var(--brand-primary); cursor: pointer;
}
.auth-page-wrapper .identity-checkbox label,
.auth-card .identity-checkbox label {
    font-size: 0.875rem; color: var(--neutral-700); cursor: pointer; user-select: none;
}

/* ---- Identity legacy shims (ForgotPassword, ResetPassword, ConfirmEmail, etc.) ---- */
.identity-form-group { margin-bottom: var(--space-5); }

.identity-status-message {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    padding: var(--space-4);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: var(--space-5);
}
.identity-status-success {
    background: rgba(16,185,129,0.07);
    border: 1px solid rgba(16,185,129,0.25);
    color: #065f46;
}
.identity-status-error {
    background: rgba(239,68,68,0.07);
    border: 1px solid rgba(239,68,68,0.25);
    color: #991b1b;
}
.identity-status-warning {
    background: rgba(245,158,11,0.07);
    border: 1px solid rgba(245,158,11,0.25);
    color: #92400e;
}
.identity-status-message i { font-size: 1.1rem; margin-top: 1px; flex-shrink: 0; }

.identity-info-box {
    background: var(--brand-primary-pale);
    border: 1px solid rgba(37,99,235,0.15);
    border-radius: var(--radius-md);
    padding: var(--space-4);
    font-size: 0.875rem;
    color: var(--neutral-700);
    line-height: 1.7;
    margin-bottom: var(--space-5);
}
.identity-info-box i { color: var(--brand-primary); margin-right: 6px; }

.validation-summary-errors {
    background: rgba(239,68,68,0.07);
    border: 1px solid rgba(239,68,68,0.25);
    border-radius: var(--radius-md);
    padding: var(--space-3) var(--space-4);
    color: #991b1b;
    font-size: 0.875rem;
    margin-bottom: var(--space-5);
}
.validation-summary-errors ul { margin: 0; padding-left: var(--space-4); }

/* auth-success/error/warning icon sizes */
.auth-success-icon,
.auth-error-icon,
.auth-warning-icon {
    width: 64px; height: 64px;
    border-radius: var(--radius-lg);
    display: inline-flex; align-items: center; justify-content: center;
    margin-bottom: var(--space-4);
}
.auth-success-icon { background: linear-gradient(135deg,#10B981 0%,#059669 100%); box-shadow: 0 8px 20px rgba(16,185,129,0.3); }
.auth-error-icon   { background: linear-gradient(135deg,#EF4444 0%,#DC2626 100%); box-shadow: 0 8px 20px rgba(239,68,68,0.3); }
.auth-warning-icon { background: linear-gradient(135deg,#F59E0B 0%,#D97706 100%); box-shadow: 0 8px 20px rgba(245,158,11,0.3); }
.auth-success-icon i, .auth-error-icon i, .auth-warning-icon i { font-size: 1.75rem; color: white; }

/* ---- Responsive ---- */
@media (max-width: 900px) {
    .auth-split-layout {
        grid-template-columns: 1fr;
    }
    .auth-brand-panel {
        display: none;
    }
    .auth-form-panel {
        padding: var(--space-8) var(--space-4);
    }
}

@media (max-width: 480px) {
    .auth-card { padding: var(--space-6); }
    .auth-form-title { font-size: 1.5rem; }
    .auth-links-row { flex-direction: column; align-items: center; }
}