/*
 * Enhanced Frontend Admin Dashboard styles for Universal Support Tickets
 * Modern card-based interface with accessible focus states, responsive tables,
 * and support for both --ust-* and legacy --jst-* branding variables.
 */

:root {
    --ust-ui-primary: var(--ust-primary-color, var(--jst-primary-color, #14a34b));
    --ust-ui-primary-dark: var(--ust-primary-dark, #0f8a3f);
    --ust-ui-primary-soft: rgba(20, 163, 75, 0.12);
    --ust-ui-accent: var(--ust-accent-color, var(--jst-accent-color, #6366f1));
    --ust-ui-bg: var(--ust-bg-primary, var(--jst-bg-primary, #f5f7fb));
    --ust-ui-surface: var(--ust-bg-secondary, var(--jst-bg-secondary, #ffffff));
    --ust-ui-surface-soft: #f8fafc;
    --ust-ui-text: var(--ust-text-primary, var(--jst-text-primary, #111827));
    --ust-ui-muted: var(--ust-text-secondary, var(--jst-text-secondary, #64748b));
    --ust-ui-border: var(--ust-border-color, var(--jst-border-color, #e2e8f0));
    --ust-ui-radius: var(--ust-radius-lg, 18px);
    --ust-ui-radius-sm: var(--ust-radius-md, 12px);
    --ust-ui-shadow: 0 20px 55px rgba(15, 23, 42, 0.10);
    --ust-ui-shadow-soft: 0 10px 28px rgba(15, 23, 42, 0.08);
    --ust-ui-transition: 180ms ease;
}

.ust-frontend-admin-container,
.ust-frontend-admin-container * {
    box-sizing: border-box;
}

.ust-frontend-admin-container {
    max-width: 1240px;
    margin: 32px auto;
    padding: clamp(18px, 2.5vw, 32px);
    color: var(--ust-ui-text);
    background:
        radial-gradient(circle at top left, rgba(20, 163, 75, 0.13), transparent 30%),
        radial-gradient(circle at top right, rgba(99, 102, 241, 0.12), transparent 28%),
        var(--ust-ui-bg);
    border: 1px solid rgba(226, 232, 240, 0.85);
    border-radius: 28px;
    box-shadow: var(--ust-ui-shadow);
    font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, sans-serif;
    line-height: 1.55;
    isolation: isolate;
}

.ust-admin-header {
    position: relative;
    overflow: hidden;
    margin-bottom: 28px;
    padding: clamp(28px, 5vw, 46px);
    color: #ffffff;
    background:
        linear-gradient(135deg, rgba(15, 23, 42, 0.18), rgba(15, 23, 42, 0.02)),
        linear-gradient(135deg, var(--ust-ui-primary), #16a34a 48%, var(--ust-ui-accent));
    border-radius: 26px;
    box-shadow: 0 22px 44px rgba(20, 163, 75, 0.24);
}

.ust-admin-header::before {
    content: "";
    position: absolute;
    inset: -40% auto auto 58%;
    width: 360px;
    height: 360px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.16);
    filter: blur(2px);
}

.ust-admin-header::after {
    content: "";
    position: absolute;
    right: 32px;
    bottom: 24px;
    width: 120px;
    height: 120px;
    border-radius: 28px;
    border: 1px solid rgba(255, 255, 255, 0.22);
    transform: rotate(10deg);
    opacity: 0.55;
}

.ust-admin-header h2,
.ust-admin-header p {
    position: relative;
    z-index: 1;
    max-width: 720px;
}

.ust-admin-header h2 {
    margin: 0 0 10px;
    font-size: clamp(2rem, 4.2vw, 3.25rem);
    font-weight: 800;
    letter-spacing: -0.045em;
    line-height: 1.05;
}

.ust-admin-header p {
    margin: 0;
    color: rgba(255, 255, 255, 0.88);
    font-size: clamp(1rem, 1.8vw, 1.18rem);
}

.ust-admin-stats {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
    margin-bottom: 24px;
}

.ust-stat-card {
    position: relative;
    overflow: hidden;
    min-height: 142px;
    padding: 22px;
    background: rgba(255, 255, 255, 0.92);
    border: 1px solid rgba(226, 232, 240, 0.92);
    border-radius: var(--ust-ui-radius);
    box-shadow: var(--ust-ui-shadow-soft);
    transition: transform var(--ust-ui-transition), box-shadow var(--ust-ui-transition), border-color var(--ust-ui-transition);
}

.ust-stat-card::before {
    content: "";
    position: absolute;
    top: 18px;
    right: 18px;
    width: 46px;
    height: 46px;
    border-radius: 16px;
    background: var(--ust-ui-primary-soft);
}

.ust-stat-card::after {
    content: "";
    position: absolute;
    top: 31px;
    right: 31px;
    width: 20px;
    height: 20px;
    border: 3px solid var(--ust-ui-primary);
    border-radius: 7px;
    opacity: 0.75;
}

.ust-stat-card:hover {
    transform: translateY(-4px);
    border-color: rgba(20, 163, 75, 0.35);
    box-shadow: 0 24px 45px rgba(15, 23, 42, 0.13);
}

.ust-stat-number {
    margin: 0 0 8px;
    color: var(--ust-ui-text);
    font-size: clamp(2.2rem, 4vw, 3.35rem);
    font-weight: 850;
    letter-spacing: -0.055em;
    line-height: 0.98;
}

.ust-stat-label {
    color: var(--ust-ui-muted);
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.11em;
    text-transform: uppercase;
}

.ust-stat-open .ust-stat-number { color: #2563eb; }
.ust-stat-progress .ust-stat-number { color: #d97706; }
.ust-stat-closed .ust-stat-number { color: #059669; }
.ust-stat-open::before { background: rgba(37, 99, 235, 0.11); }
.ust-stat-progress::before { background: rgba(217, 119, 6, 0.12); }
.ust-stat-closed::before { background: rgba(5, 150, 105, 0.12); }
.ust-stat-open::after { border-color: #2563eb; }
.ust-stat-progress::after { border-color: #d97706; }
.ust-stat-closed::after { border-color: #059669; }

.ust-admin-filters {
    margin-bottom: 24px;
    padding: 18px;
    background: rgba(255, 255, 255, 0.94);
    border: 1px solid var(--ust-ui-border);
    border-radius: var(--ust-ui-radius);
    box-shadow: var(--ust-ui-shadow-soft);
}

.ust-filter-form {
    display: grid;
    grid-template-columns: minmax(220px, 1fr) minmax(170px, 220px) auto;
    gap: 14px;
    align-items: center;
}

.ust-filter-group {
    display: flex;
    gap: 10px;
    align-items: center;
    min-width: 0;
}

.ust-filter-group input,
.ust-filter-group select,
.ust-action-group select,
.ust-agent-add-response textarea {
    width: 100%;
    min-height: 46px;
    padding: 11px 14px;
    color: var(--ust-ui-text);
    background: #ffffff;
    border: 1px solid var(--ust-ui-border);
    border-radius: 14px;
    box-shadow: inset 0 1px 2px rgba(15, 23, 42, 0.04);
    font-size: 0.96rem;
    transition: border-color var(--ust-ui-transition), box-shadow var(--ust-ui-transition), background var(--ust-ui-transition);
}

.ust-filter-group input::placeholder,
.ust-agent-add-response textarea::placeholder {
    color: #94a3b8;
}

.ust-filter-group input:focus,
.ust-filter-group select:focus,
.ust-action-group select:focus,
.ust-agent-add-response textarea:focus {
    outline: none;
    border-color: var(--ust-ui-primary);
    box-shadow: 0 0 0 4px rgba(20, 163, 75, 0.13);
}

.ust-btn,
.ust-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 42px;
    padding: 10px 18px;
    border: 1px solid transparent;
    border-radius: 999px;
    font-size: 0.92rem;
    font-weight: 800;
    line-height: 1;
    text-decoration: none !important;
    cursor: pointer;
    transition: transform var(--ust-ui-transition), box-shadow var(--ust-ui-transition), background var(--ust-ui-transition), border-color var(--ust-ui-transition);
}

.ust-btn-primary,
.ust-button-primary {
    color: #ffffff !important;
    background: linear-gradient(135deg, var(--ust-ui-primary), #16a34a);
    box-shadow: 0 12px 24px rgba(20, 163, 75, 0.24);
}

.ust-btn-primary:hover,
.ust-button-primary:hover {
    color: #ffffff !important;
    transform: translateY(-2px);
    box-shadow: 0 16px 32px rgba(20, 163, 75, 0.28);
}

.ust-btn-secondary {
    color: var(--ust-ui-text) !important;
    background: #ffffff;
    border-color: var(--ust-ui-border);
}

.ust-btn-secondary:hover {
    color: var(--ust-ui-primary) !important;
    border-color: rgba(20, 163, 75, 0.35);
    transform: translateY(-2px);
}

.ust-btn-small {
    min-height: 34px;
    padding: 8px 13px;
    font-size: 0.82rem;
}

.ust-view-ticket {
    color: #ffffff !important;
    background: linear-gradient(135deg, var(--ust-ui-accent), #4f46e5);
    box-shadow: 0 10px 22px rgba(79, 70, 229, 0.22);
}

.ust-view-ticket:hover {
    color: #ffffff !important;
    transform: translateY(-2px);
}

.ust-tickets-table-container {
    overflow: hidden;
    margin-bottom: 24px;
    background: rgba(255, 255, 255, 0.96);
    border: 1px solid var(--ust-ui-border);
    border-radius: 22px;
    box-shadow: var(--ust-ui-shadow-soft);
}

.ust-tickets-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    color: var(--ust-ui-text);
    font-size: 0.94rem;
}

.ust-tickets-table th {
    padding: 16px 14px;
    color: #475569;
    background: #f8fafc;
    border-bottom: 1px solid var(--ust-ui-border);
    font-size: 0.74rem;
    font-weight: 850;
    letter-spacing: 0.09em;
    text-align: left;
    text-transform: uppercase;
    white-space: nowrap;
}

.ust-tickets-table td {
    padding: 17px 14px;
    border-bottom: 1px solid #eef2f7;
    vertical-align: middle;
}

.ust-tickets-table tbody tr {
    transition: background var(--ust-ui-transition), transform var(--ust-ui-transition);
}

.ust-tickets-table tbody tr:hover {
    background: #f8fafc;
}

.ust-tickets-table tbody tr:last-child td {
    border-bottom: none;
}

.ust-user-info {
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.ust-user-info strong {
    color: var(--ust-ui-text);
    font-weight: 800;
}

.ust-user-info small {
    color: var(--ust-ui-muted);
    font-size: 0.82rem;
}

.ust-status,
.ust-priority,
.ust-ticket-status,
.ust-ticket-priority {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    min-height: 26px;
    padding: 6px 10px;
    border-radius: 999px;
    font-size: 0.72rem;
    font-weight: 850;
    letter-spacing: 0.055em;
    line-height: 1;
    text-transform: uppercase;
    white-space: nowrap;
}

.ust-status::before,
.ust-ticket-status::before {
    content: "";
    width: 7px;
    height: 7px;
    border-radius: 999px;
    background: currentColor;
}

.ust-status-open,
.ust-ticket-status.open { background: #dbeafe; color: #1d4ed8; }
.ust-status-in_progress,
.ust-ticket-status.in_progress { background: #fef3c7; color: #b45309; }
.ust-status-pending,
.ust-ticket-status.pending { background: #ede9fe; color: #6d28d9; }
.ust-status-closed,
.ust-ticket-status.closed { background: #dcfce7; color: #15803d; }
.ust-priority-low,
.ust-ticket-priority.low { background: #ecfdf5; color: #047857; }
.ust-priority-normal,
.ust-ticket-priority.normal { background: #eff6ff; color: #1d4ed8; }
.ust-priority-high,
.ust-ticket-priority.high { background: #fff7ed; color: #c2410c; }
.ust-priority-urgent,
.ust-ticket-priority.urgent { background: #fee2e2; color: #b91c1c; }

.ust-no-tickets,
.ust-loading-indicator,
.ust-loading {
    text-align: center;
    padding: clamp(42px, 7vw, 72px) 28px;
    color: var(--ust-ui-muted);
    background: rgba(255, 255, 255, 0.95);
    border: 1px dashed #cbd5e1;
    border-radius: 22px;
}

.ust-no-tickets h3 {
    margin: 0 0 8px;
    color: var(--ust-ui-text);
    font-size: 1.45rem;
    font-weight: 850;
}

.ust-pagination {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
    margin-top: 24px;
}

.ust-pagination-link,
.ust-pagination-current {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 42px;
    min-height: 42px;
    padding: 8px 14px;
    border-radius: 999px;
    font-weight: 800;
    text-decoration: none !important;
    transition: transform var(--ust-ui-transition), box-shadow var(--ust-ui-transition), background var(--ust-ui-transition);
}

.ust-pagination-link {
    color: var(--ust-ui-text);
    background: #ffffff;
    border: 1px solid var(--ust-ui-border);
}

.ust-pagination-link:hover,
.ust-pagination-current {
    color: #ffffff !important;
    background: var(--ust-ui-primary);
    border-color: var(--ust-ui-primary);
    transform: translateY(-1px);
}

.ust-modal,
.ust-agent-modal {
    position: fixed;
    inset: 0;
    z-index: 99999;
    display: none;
    padding: clamp(16px, 3vw, 38px);
    overflow-y: auto;
    background: rgba(15, 23, 42, 0.62);
    backdrop-filter: blur(7px);
}

.ust-modal-overlay {
    position: fixed;
    inset: 0;
    z-index: 99998;
    background: rgba(15, 23, 42, 0.62);
    backdrop-filter: blur(7px);
}

.ust-modal-content,
.ust-admin-modal,
.ust-agent-modal-content {
    width: min(980px, 100%);
    margin: 0 auto;
    overflow: hidden;
    background: #ffffff;
    border: 1px solid rgba(226, 232, 240, 0.9);
    border-radius: 26px;
    box-shadow: 0 34px 90px rgba(15, 23, 42, 0.35);
}

.ust-modal-header,
.ust-agent-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 22px 26px;
    color: #ffffff;
    background: linear-gradient(135deg, var(--ust-ui-primary), var(--ust-ui-accent));
}

.ust-modal-header h3,
.ust-agent-modal-header h3 {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 850;
    letter-spacing: -0.025em;
}

.ust-modal-close,
.ust-agent-modal-close {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    color: #ffffff;
    background: rgba(255, 255, 255, 0.16);
    border: 1px solid rgba(255, 255, 255, 0.26);
    border-radius: 999px;
    cursor: pointer;
    font-size: 24px;
    line-height: 1;
    transition: background var(--ust-ui-transition), transform var(--ust-ui-transition);
}

.ust-modal-close:hover,
.ust-agent-modal-close:hover {
    background: rgba(255, 255, 255, 0.26);
    transform: rotate(90deg);
}

.ust-modal-body,
.ust-agent-modal-body {
    max-height: min(78vh, 760px);
    overflow-y: auto;
    padding: clamp(20px, 3vw, 30px);
}

.ust-admin-ticket-details,
.ust-agent-ticket-details {
    color: var(--ust-ui-text);
    line-height: 1.6;
    text-align: left;
}

.ust-ticket-actions-top {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-bottom: 22px;
    padding: 16px;
    background: #f8fafc;
    border: 1px solid var(--ust-ui-border);
    border-radius: 18px;
}

.ust-action-group {
    display: flex;
    flex: 1 1 220px;
    align-items: center;
    gap: 10px;
}

.ust-action-group label {
    margin: 0;
    color: #475569;
    font-weight: 800;
    white-space: nowrap;
}

.ust-info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: 12px;
    margin-bottom: 22px;
}

.ust-info-item {
    display: grid;
    gap: 5px;
    padding: 15px;
    background: #f8fafc;
    border: 1px solid #eef2f7;
    border-radius: 16px;
}

.ust-info-item strong {
    color: var(--ust-ui-muted);
    font-size: 0.72rem;
    font-weight: 850;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.ust-info-item span,
.ust-info-item a {
    color: var(--ust-ui-text);
    font-weight: 700;
}

.ust-ticket-content,
.ust-ticket-responses,
.ust-agent-add-response,
.ust-admin-add-response {
    margin-top: 18px;
    padding: 20px;
    background: #ffffff;
    border: 1px solid var(--ust-ui-border);
    border-radius: 20px;
    box-shadow: 0 8px 22px rgba(15, 23, 42, 0.05);
}

.ust-ticket-content h4,
.ust-ticket-responses h5,
.ust-agent-add-response h5,
.ust-admin-add-response h5 {
    margin: 0 0 12px;
    color: var(--ust-ui-text);
    font-weight: 850;
    letter-spacing: -0.02em;
}

.ust-description-content,
.ust-response-content {
    color: #334155;
}

.ust-response {
    margin: 14px 0;
    padding: 16px;
    background: #f8fafc;
    border: 1px solid #eef2f7;
    border-left: 4px solid #cbd5e1;
    border-radius: 16px;
}

.ust-admin-response {
    background: rgba(20, 163, 75, 0.06);
    border-left-color: var(--ust-ui-primary);
}

.ust-user-response {
    background: rgba(99, 102, 241, 0.06);
    border-left-color: var(--ust-ui-accent);
}

.ust-response-header {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px 12px;
    margin-bottom: 8px;
}

.ust-response-date {
    color: var(--ust-ui-muted);
    font-size: 0.82rem;
}

.ust-admin-badge {
    display: inline-flex;
    padding: 4px 8px;
    color: #ffffff;
    background: var(--ust-ui-primary);
    border-radius: 999px;
    font-size: 0.68rem;
    font-weight: 850;
    text-transform: uppercase;
}

.ust-agent-add-response textarea,
.ust-admin-add-response textarea {
    display: block;
    width: 100%;
    min-height: 126px;
    resize: vertical;
}

.ust-response-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    margin-top: 14px;
}

.ust-response-actions label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--ust-ui-muted);
    font-weight: 650;
}

.ust-error,
.ust-message.error {
    padding: 14px 16px;
    color: #991b1b;
    background: #fee2e2;
    border: 1px solid #fecaca;
    border-radius: 14px;
    font-weight: 700;
}

.ust-message.success {
    padding: 14px 16px;
    color: #065f46;
    background: #d1fae5;
    border: 1px solid #a7f3d0;
    border-radius: 14px;
    font-weight: 700;
}

.ust-spinner {
    width: 34px;
    height: 34px;
    margin: 0 auto 12px;
    border: 3px solid #dbeafe;
    border-top-color: var(--ust-ui-primary);
    border-radius: 999px;
    animation: ustSpin 0.8s linear infinite;
}

@keyframes ustSpin {
    to { transform: rotate(360deg); }
}

@media (max-width: 1024px) {
    .ust-admin-stats {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .ust-filter-form {
        grid-template-columns: 1fr 1fr;
    }

    .ust-filter-form .ust-filter-group:last-child {
        grid-column: 1 / -1;
    }
}

@media (max-width: 760px) {
    .ust-frontend-admin-container {
        margin: 16px auto;
        border-radius: 20px;
    }

    .ust-admin-stats,
    .ust-filter-form {
        grid-template-columns: 1fr;
    }

    .ust-filter-group,
    .ust-response-actions {
        align-items: stretch;
        flex-direction: column;
    }

    .ust-tickets-table-container {
        overflow-x: auto;
    }

    .ust-tickets-table {
        min-width: 860px;
    }

    .ust-modal,
    .ust-agent-modal {
        padding: 10px;
    }

    .ust-modal-content,
    .ust-admin-modal,
    .ust-agent-modal-content {
        border-radius: 20px;
    }
}

@media (max-width: 520px) {
    .ust-admin-stats {
        gap: 12px;
    }

    .ust-stat-card {
        min-height: 118px;
        padding: 18px;
    }

    .ust-action-group {
        align-items: stretch;
        flex-direction: column;
    }
}