/*
 * ui-states.css — TrustLink Escrow Shared UI State System
 * Prefix: tl-
 * Author: TrustLink Engineering
 * Rules: Never redefine .card, .error, .loading, .btn
 */

/* ==========================================================================
   1. Screen-reader utility
   ========================================================================== */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ==========================================================================
   2. Social footer links
   ========================================================================== */
.footer-social {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 20px;
    align-items: center;
}

.footer-social-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 10px;
    border: 1px solid #E2E8F0;
    background: #FFFFFF;
    color: #64748B;
    text-decoration: none;
    transition: color 0.18s ease, border-color 0.18s ease, transform 0.18s ease, box-shadow 0.18s ease;
}

.footer-social-link:hover,
.footer-social-link:focus-visible {
    color: #2563EB;
    border-color: #2563EB;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
    transform: translateY(-2px);
    outline: none;
}

.footer-social-link:active {
    transform: translateY(0);
    box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.08);
}

.footer-social-link:focus:not(:focus-visible) {
    outline: none;
}

.footer-social-link:focus-visible {
    outline: 2px solid #2563EB;
    outline-offset: 2px;
}

.footer-social-link img {
    width: 19px;
    height: 19px;
    display: block;
    flex-shrink: 0;
    /* color via currentColor doesn't work on img elements; icons are inherently colored via SVG fill */
}

/* Light-theme override for the landing page footer */
.light-landing .footer-social-link {
    background: #F8FAFC;
    border-color: #E2E8F0;
    color: #64748B;
}

/* ==========================================================================
   3. Connectivity Banner
   ========================================================================== */
.tl-network-banner {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 99997;
    padding: 10px 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-family: 'Inter', system-ui, sans-serif;
    font-size: 0.875rem;
    font-weight: 500;
    line-height: 1.4;
    transform: translateY(-100%);
    transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    /* Safe-area support */
    padding-top: calc(10px + env(safe-area-inset-top, 0px));
}

.tl-network-banner.tl-visible {
    transform: translateY(0);
}

.tl-network-banner.tl-offline {
    background: #1E293B;
    color: #F8FAFC;
    border-bottom: 1px solid #334155;
}

.tl-network-banner.tl-reconnected {
    background: #064E3B;
    color: #D1FAE5;
    border-bottom: 1px solid #065F46;
}

.tl-network-banner-icon {
    flex-shrink: 0;
    width: 16px;
    height: 16px;
}

.tl-network-banner-close {
    background: none;
    border: none;
    cursor: pointer;
    color: inherit;
    opacity: 0.7;
    padding: 4px;
    margin-left: 8px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 28px;
    min-height: 28px;
}

.tl-network-banner-close:hover {
    opacity: 1;
}

/* ==========================================================================
   4. State Container (empty / error / no-results / payment-pending)
   ========================================================================== */
.tl-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 48px 24px;
    gap: 16px;
    animation: tl-state-enter 0.22s ease-out both;
}

@keyframes tl-state-enter {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.tl-state-icon {
    width: 64px;
    height: 64px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    margin-bottom: 4px;
}

.tl-state-icon svg {
    width: 32px;
    height: 32px;
}

/* Icon variants */
.tl-state-icon.tl-icon-empty {
    background: #F1F5F9;
    color: #94A3B8;
}

.tl-state-icon.tl-icon-error {
    background: #FEF2F2;
    color: #DC2626;
}

.tl-state-icon.tl-icon-warning {
    background: #FFFBEB;
    color: #D97706;
}

.tl-state-icon.tl-icon-info {
    background: #EFF6FF;
    color: #2563EB;
}

.tl-state-icon.tl-icon-pending {
    background: #FEF3C7;
    color: #D97706;
}

.tl-state-icon.tl-icon-search {
    background: #F1F5F9;
    color: #64748B;
}

.tl-state-icon.tl-icon-offline {
    background: #F1F5F9;
    color: #64748B;
}

.tl-state-title {
    font-family: 'Outfit', sans-serif;
    font-size: 1.125rem;
    font-weight: 700;
    color: #0F172A;
    margin: 0;
    line-height: 1.3;
}

.tl-state-message {
    font-family: 'Inter', system-ui, sans-serif;
    font-size: 0.9rem;
    color: #64748B;
    max-width: 380px;
    margin: 0;
    line-height: 1.6;
}

.tl-state-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    margin-top: 4px;
}

/* Action buttons inside states — intentionally different class from .btn */
.tl-state-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 20px;
    border-radius: 10px;
    font-family: 'Inter', system-ui, sans-serif;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    text-decoration: none;
    transition: transform 0.16s ease, box-shadow 0.16s ease;
    min-height: 44px;
}

.tl-state-btn:hover {
    transform: translateY(-1px);
}

.tl-state-btn-primary {
    background: #0F172A;
    color: #FFFFFF;
    box-shadow: 0 2px 8px rgba(15, 23, 42, 0.15);
}

.tl-state-btn-primary:hover {
    background: #1E293B;
    box-shadow: 0 4px 12px rgba(15, 23, 42, 0.2);
}

.tl-state-btn-secondary {
    background: transparent;
    color: #475569;
    border: 1px solid #E2E8F0;
}

.tl-state-btn-secondary:hover {
    border-color: #94A3B8;
    background: #F8FAFC;
}

.tl-state-btn-accent {
    background: #2563EB;
    color: #FFFFFF;
    box-shadow: 0 2px 8px rgba(37, 99, 235, 0.2);
}

.tl-state-btn-accent:hover {
    background: #1D4ED8;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

/* Reference ID display */
.tl-state-ref {
    font-family: 'Inter', monospace;
    font-size: 0.75rem;
    color: #94A3B8;
    background: #F1F5F9;
    padding: 4px 10px;
    border-radius: 6px;
    word-break: break-all;
    max-width: 320px;
}

/* ==========================================================================
   5. Skeleton Loading
   ========================================================================== */
.tl-skeleton {
    display: inline-block;
    background: linear-gradient(90deg, #F1F5F9 25%, #E2E8F0 50%, #F1F5F9 75%);
    background-size: 400% 100%;
    animation: tl-shimmer 1.8s ease-in-out infinite;
    border-radius: 6px;
    flex-shrink: 0;
}

@keyframes tl-shimmer {
    0%   { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.tl-skeleton-row {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 0;
    border-bottom: 1px solid #F1F5F9;
}

.tl-skeleton-row:last-child {
    border-bottom: none;
}

.tl-skeleton-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    flex-shrink: 0;
}

.tl-skeleton-text {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.tl-skeleton-line {
    height: 12px;
    border-radius: 6px;
}

.tl-skeleton-line-sm {
    height: 10px;
    width: 60%;
    border-radius: 6px;
}

.tl-skeleton-card {
    background: #FFFFFF;
    border: 1px solid #E2E8F0;
    border-radius: 12px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

/* ==========================================================================
   6. Button Loading State
   ========================================================================== */
.tl-btn-loading {
    position: relative;
    pointer-events: none;
    opacity: 0.85;
}

.tl-btn-spinner {
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255,255,255,0.3);
    border-top-color: #FFFFFF;
    border-radius: 50%;
    animation: tl-spin 0.7s linear infinite;
    flex-shrink: 0;
    display: inline-block;
}

.tl-btn-spinner-dark {
    border-color: rgba(15, 23, 42, 0.2);
    border-top-color: #0F172A;
}

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

/* ==========================================================================
   7. Field Validation Errors
   ========================================================================== */
.tl-field-error {
    display: flex;
    align-items: flex-start;
    gap: 6px;
    margin-top: 6px;
    font-family: 'Inter', system-ui, sans-serif;
    font-size: 0.8rem;
    color: #DC2626;
    line-height: 1.4;
}

.tl-field-error-icon {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
    margin-top: 1px;
}

.tl-field-error-text {
    /* textContent used — never innerHTML */
}

/* Invalid input styling — applied via JS */
.tl-input-invalid {
    border-color: #DC2626 !important;
    background-color: #FFF5F5 !important;
}

.tl-input-invalid:focus {
    box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.12) !important;
}

/* Form-level error summary */
.tl-form-error-summary {
    background: #FEF2F2;
    border: 1px solid #FCA5A5;
    border-radius: 10px;
    padding: 12px 16px;
    margin-bottom: 20px;
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-family: 'Inter', system-ui, sans-serif;
    font-size: 0.875rem;
    color: #991B1B;
    animation: tl-state-enter 0.2s ease-out both;
}

.tl-form-error-summary svg {
    flex-shrink: 0;
    width: 16px;
    height: 16px;
    margin-top: 2px;
}

/* ==========================================================================
   8. Slow Network Feedback
   ========================================================================== */
.tl-slow-network-msg {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    background: #FFFBEB;
    border: 1px solid #FDE68A;
    border-radius: 8px;
    font-family: 'Inter', system-ui, sans-serif;
    font-size: 0.8rem;
    color: #92400E;
    margin-top: 12px;
    animation: tl-state-enter 0.2s ease-out both;
}

.tl-slow-network-msg svg {
    flex-shrink: 0;
    width: 14px;
    height: 14px;
    animation: tl-spin 1.5s linear infinite;
}

/* ==========================================================================
   9. Session Expired Dialog
   ========================================================================== */
.tl-session-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.6);
    z-index: 99998;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    backdrop-filter: blur(2px);
    animation: tl-overlay-in 0.22s ease-out both;
}

@keyframes tl-overlay-in {
    from { opacity: 0; }
    to   { opacity: 1; }
}

.tl-session-dialog {
    background: #FFFFFF;
    border-radius: 20px;
    padding: 36px 32px;
    max-width: 420px;
    width: 100%;
    box-shadow: 0 20px 60px rgba(0,0,0,0.25);
    animation: tl-dialog-in 0.25s cubic-bezier(0.16, 1, 0.3, 1) both;
    position: relative;
}

@keyframes tl-dialog-in {
    from {
        opacity: 0;
        transform: translateY(16px) scale(0.97);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.tl-session-dialog-icon {
    width: 56px;
    height: 56px;
    background: #FEF3C7;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #D97706;
    margin: 0 auto 20px;
}

.tl-session-dialog-icon svg {
    width: 28px;
    height: 28px;
}

.tl-session-dialog h2 {
    font-family: 'Outfit', sans-serif;
    font-size: 1.25rem;
    font-weight: 700;
    color: #0F172A;
    margin: 0 0 12px;
    text-align: center;
}

.tl-session-dialog p {
    font-family: 'Inter', system-ui, sans-serif;
    font-size: 0.9rem;
    color: #64748B;
    text-align: center;
    margin: 0 0 24px;
    line-height: 1.6;
}

.tl-session-dialog-btn {
    display: block;
    width: 100%;
    padding: 14px;
    background: #0F172A;
    color: #FFFFFF;
    border: none;
    border-radius: 12px;
    font-family: 'Inter', system-ui, sans-serif;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    text-align: center;
    text-decoration: none;
    transition: background 0.18s ease, transform 0.18s ease;
    min-height: 48px;
}

.tl-session-dialog-btn:hover {
    background: #1E293B;
    transform: translateY(-1px);
}

.tl-session-dialog-btn:focus-visible {
    outline: 2px solid #2563EB;
    outline-offset: 2px;
}

/* ==========================================================================
   10. Page-auth Loading Skeleton
   ========================================================================== */
.tl-page-loading {
    position: fixed;
    inset: 0;
    background: #F8FAFC;
    z-index: 99999;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 16px;
    transition: opacity 0.3s ease;
}

.tl-page-loading.tl-hiding {
    opacity: 0;
    pointer-events: none;
}

.tl-page-loading-logo {
    width: 80px;
    height: auto;
    object-fit: contain;
    animation: tl-pulse 1.8s ease-in-out infinite;
}

@keyframes tl-pulse {
    0%, 100% { opacity: 1; }
    50%       { opacity: 0.5; }
}

.tl-page-loading-text {
    font-family: 'Inter', system-ui, sans-serif;
    font-size: 0.875rem;
    color: #94A3B8;
    letter-spacing: 0.01em;
}

/* ==========================================================================
   11. Table scroll affordance
   ========================================================================== */
.tl-table-scroll-wrap {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    position: relative;
}

.tl-table-scroll-wrap::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 32px;
    height: 100%;
    background: linear-gradient(to left, rgba(255,255,255,0.9), transparent);
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.2s;
}

.tl-table-scroll-wrap.tl-has-scroll::after {
    opacity: 1;
}

/* ==========================================================================
   12. Mobile improvements
   ========================================================================== */

/* Password toggle minimum touch target */
.toggle-password {
    min-width: 44px;
    min-height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Prevent iOS input zoom — 16px minimum on mobile */
@media (max-width: 768px) {
    .form-group input,
    .form-group select,
    .form-group textarea,
    .auth-form input {
        font-size: 16px !important;
    }

    /* Footer social icons should not shrink below 44px on mobile */
    .footer-social {
        gap: 8px;
        flex-wrap: wrap;
    }

    .footer-social-link {
        width: 44px;
        height: 44px;
        flex-shrink: 0;
    }

    /* Legal back-to-top: move to left on mobile to avoid Tawk collision */
    .legal-back-top {
        right: auto;
        left: 16px;
        bottom: 90px;
    }

    /* Ensure dashboard main content has enough padding for bottom nav */
    .dashboard-main {
        padding-bottom: calc(80px + env(safe-area-inset-bottom, 16px));
    }
}

@media (max-width: 480px) {
    /* Footer social row wraps cleanly */
    .footer-social {
        justify-content: flex-start;
    }

    /* Stack tl-state-actions on very small screens */
    .tl-state-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .tl-state-btn {
        width: 100%;
        justify-content: center;
    }
}

/* ==========================================================================
   13. Reduced Motion
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
    .tl-skeleton,
    .tl-page-loading-logo,
    .tl-btn-spinner,
    .tl-slow-network-msg svg {
        animation: none !important;
    }

    .tl-state,
    .tl-session-overlay,
    .tl-session-dialog,
    .tl-network-banner,
    .tl-form-error-summary,
    .tl-slow-network-msg {
        animation: none !important;
        transition: none !important;
    }

    .footer-social-link,
    .tl-state-btn {
        transition: none !important;
        transform: none !important;
    }

    .footer-social-link:hover,
    .footer-social-link:focus-visible,
    .tl-state-btn:hover {
        transform: none !important;
    }

    /* Keep skeleton visible without shimmer */
    .tl-skeleton {
        background: #E2E8F0 !important;
        animation: none !important;
    }
}

/* ==========================================================================
   14. Focus indicators (global enhancement)
   ========================================================================== */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
[tabindex]:focus-visible {
    outline: 2px solid #2563EB;
    outline-offset: 2px;
}

/* Suppress default outline only when focus-visible is active */
a:focus:not(:focus-visible),
button:focus:not(:focus-visible) {
    outline: none;
}