:root {
    --color-bg: #f0f4f8;
    --color-surface: #ffffff;
    --color-border: #d1d9e6;
    --color-text: #1a2332;
    --color-text-muted: #64748b;
    --color-primary: #3b82f6;
    --color-primary-dark: #2563eb;
    --color-primary-light: #dbeafe;
    --color-success: #10b981;
    --color-success-bg: #ecfdf5;
    --color-success-border: #a7f3d0;
    --color-danger: #ef4444;
    --color-danger-bg: #fef2f2;
    --color-danger-border: #fecaca;
    --color-header: linear-gradient(135deg, #1e293b 0%, #334155 100%);
    --color-header-solid: #1e293b;
    --radius: 10px;
    --radius-sm: 6px;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 14px rgba(0, 0, 0, 0.08), 0 2px 6px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.1), 0 4px 10px rgba(0, 0, 0, 0.05);
    --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --transition: 0.18s ease;
}

* {
    box-sizing: border-box;
}

html, body {
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font);
    background-color: var(--color-bg);
    color: var(--color-text);
    font-size: 15px;
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

h1, h2, h3, h4 {
    line-height: 1.25;
    margin: 0 0 0.5rem;
    font-weight: 700;
    color: var(--color-text);
}

h1 { font-size: 1.65rem; }
h2 { font-size: 1.2rem; color: var(--color-text-muted); font-weight: 600; text-transform: uppercase; letter-spacing: 0.04em; font-size: 0.82rem; margin-top: 0.25rem; }

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition);
}

a:hover {
    color: var(--color-primary-dark);
    text-decoration: none;
}

.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;
}

.container {
    width: 100%;
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 1.25rem;
}

/* ---------- Top bar ---------- */
.topbar {
    background: var(--color-header);
    color: #f9fafb;
    box-shadow: var(--shadow-lg);
    position: sticky;
    top: 0;
    z-index: 100;
}

.topbar-inner {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 1.25rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    min-height: 60px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.55rem;
    color: #ffffff;
    font-weight: 700;
    font-size: 1.1rem;
    text-decoration: none;
    white-space: nowrap;
    letter-spacing: -0.01em;
}

.brand:hover {
    text-decoration: none;
    color: #ffffff;
}

.brand-mark {
    font-size: 1.3rem;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 0.15rem;
    margin-left: 0.75rem;
}

.nav-link {
    color: #cbd5e1;
    padding: 0.45rem 0.8rem;
    border-radius: var(--radius-sm);
    font-size: 0.93rem;
    text-decoration: none;
    font-weight: 500;
    transition: background var(--transition), color var(--transition);
}

.nav-link:hover {
    color: #ffffff;
    background-color: rgba(255, 255, 255, 0.1);
    text-decoration: none;
}

.nav-link.active {
    color: #ffffff;
    background-color: rgba(255, 255, 255, 0.16);
    font-weight: 600;
}

.account {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 0.65rem;
}

.account-name {
    display: flex;
    align-items: center;
    gap: 0.45rem;
    color: #e2e8f0;
    font-size: 0.88rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 180px;
}

.account-avatar {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: #ffffff;
    font-size: 0.78rem;
    font-weight: 700;
    flex-shrink: 0;
    box-shadow: 0 2px 6px rgba(59, 130, 246, 0.4);
}

.nav-toggle {
    display: none;
    background: none;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-sm);
    padding: 0.4rem 0.5rem;
    cursor: pointer;
    margin-left: auto;
}

.nav-toggle-bar {
    display: block;
    width: 18px;
    height: 2px;
    background-color: #f9fafb;
    border-radius: 1px;
    margin: 3px 0;
}

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    border: 1px solid transparent;
    border-radius: var(--radius);
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    text-decoration: none;
    line-height: 1.4;
    transition: background var(--transition), box-shadow var(--transition), transform 0.1s ease;
    white-space: nowrap;
}

.btn:active {
    transform: translateY(1px);
}

.btn:disabled {
    opacity: 0.55;
    cursor: not-allowed;
    transform: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: #ffffff;
    border-color: var(--color-primary-dark);
    box-shadow: 0 2px 8px rgba(37, 99, 235, 0.3);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #60a5fa 0%, var(--color-primary) 100%);
    text-decoration: none;
    color: #ffffff;
    box-shadow: 0 4px 14px rgba(37, 99, 235, 0.4);
}

.btn-ghost {
    background-color: transparent;
    color: #e2e8f0;
    border-color: rgba(255, 255, 255, 0.2);
}

.btn-ghost:hover {
    background-color: rgba(255, 255, 255, 0.12);
    color: #ffffff;
    text-decoration: none;
}

.btn-danger {
    background-color: var(--color-danger-bg);
    color: var(--color-danger);
    border-color: var(--color-danger-border);
}

.btn-danger:hover {
    background-color: var(--color-danger);
    color: #ffffff;
    text-decoration: none;
    box-shadow: 0 2px 8px rgba(239, 68, 68, 0.3);
}

.btn-success {
    background-color: var(--color-success-bg);
    color: var(--color-success);
    border-color: var(--color-success-border);
}

.btn-success:hover {
    background-color: var(--color-success);
    color: #ffffff;
    text-decoration: none;
    box-shadow: 0 2px 8px rgba(16, 185, 129, 0.3);
}

.btn-sm {
    padding: 0.28rem 0.65rem;
    font-size: 0.82rem;
    border-radius: var(--radius-sm);
}

.inline-form {
    display: inline;
}

/* ---------- CAPTCHA ---------- */
.captcha-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.captcha-image {
    height: 50px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    background: #fff;
    flex: none;
    box-shadow: var(--shadow-sm);
}

.captcha-input {
    text-transform: uppercase;
    letter-spacing: 0.15em;
    font-weight: 600;
    max-width: 150px;
}

.captcha-refresh {
    flex: none;
    font-size: 1.15rem;
    line-height: 1;
}

/* ---------- Alerts ---------- */
.alert {
    border-radius: var(--radius);
    padding: 0.85rem 1.1rem;
    margin-bottom: 1.1rem;
    border: 1px solid transparent;
    display: flex;
    gap: 0.55rem;
    align-items: flex-start;
    font-size: 0.92rem;
    box-shadow: var(--shadow-sm);
}

.alert-success {
    background-color: var(--color-success-bg);
    border-color: var(--color-success-border);
    color: #065f46;
}

.alert-danger {
    background-color: var(--color-danger-bg);
    border-color: var(--color-danger-border);
    color: #991b1b;
}

/* ---------- Cards / panels ---------- */
.card {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    overflow: hidden;
}

.card-body {
    padding: 1.4rem;
}

/* ---------- Forms ---------- */
.form-group {
    margin-bottom: 1.1rem;
}

label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.35rem;
    font-size: 0.9rem;
    color: var(--color-text);
}

input[type="text"],
input[type="password"],
input[type="email"],
input[type="search"],
textarea,
select {
    width: 100%;
    padding: 0.6rem 0.8rem;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius);
    font-size: 0.95rem;
    font-family: inherit;
    color: var(--color-text);
    background-color: #ffffff;
    transition: border-color var(--transition), box-shadow var(--transition);
}

input[type="text"]:focus,
input[type="password"]:focus,
input[type="email"]:focus,
input[type="search"]:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

input[type="file"] {
    width: 100%;
    padding: 0.6rem;
    border: 1.5px dashed var(--color-border);
    border-radius: var(--radius);
    background-color: #f8fafc;
    cursor: pointer;
}

input[type="file"]:hover {
    border-color: var(--color-primary);
    background-color: var(--color-primary-light);
}

.field-validation-error,
.validation-summary-errors {
    color: var(--color-danger);
    font-size: 0.84rem;
    margin-top: 0.3rem;
}

.validation-summary-errors ul {
    margin: 0.3rem 0 0;
    padding-left: 1.2rem;
}

.form-hint {
    color: var(--color-text-muted);
    font-size: 0.84rem;
    margin-top: 0.3rem;
}

.remember-me {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    cursor: pointer;
}

.remember-me input[type="checkbox"] {
    width: auto;
    margin: 0;
}

.form-actions {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    margin-top: 0.5rem;
}

/* ---------- Tables ---------- */
.table-wrap {
    overflow-x: auto;
    border-radius: var(--radius);
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

th, td {
    text-align: left;
    padding: 0.75rem 0.9rem;
    border-bottom: 1px solid var(--color-border);
    vertical-align: top;
}

th {
    background: linear-gradient(to bottom, #f8fafc, #f1f5f9);
    font-weight: 650;
    color: #475569;
    white-space: nowrap;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 2px solid var(--color-border);
}

tbody tr:last-child td {
    border-bottom: none;
}

tbody tr {
    transition: background var(--transition);
}

tbody tr:hover {
    background-color: #f8fafc;
}

.file-name {
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 0.84rem;
    word-break: break-all;
    color: var(--color-text-muted);
}

.text-muted {
    color: var(--color-text-muted);
}

.nowrap {
    white-space: nowrap;
}

/* ---------- Empty state ---------- */
.empty-state {
    text-align: center;
    padding: 3.5rem 1.5rem;
    color: var(--color-text-muted);
}

.empty-state .empty-icon {
    font-size: 3rem;
    margin-bottom: 0.85rem;
}

.empty-state h3 {
    color: var(--color-text);
    margin-bottom: 0.4rem;
    font-size: 1.15rem;
}

/* ---------- Pagination ---------- */
.pagination {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-top: 1.1rem;
    flex-wrap: wrap;
}

.pagination-info {
    color: var(--color-text-muted);
    font-size: 0.86rem;
}

.pagination-links {
    display: flex;
    gap: 0.3rem;
    align-items: center;
}

.page-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 34px;
    height: 34px;
    padding: 0 0.6rem;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-sm);
    background-color: var(--color-surface);
    color: var(--color-text);
    font-size: 0.88rem;
    text-decoration: none;
    font-weight: 500;
    transition: background var(--transition), border-color var(--transition), color var(--transition);
}

.page-link:hover:not(:disabled):not(.disabled) {
    background-color: var(--color-primary-light);
    border-color: var(--color-primary);
    color: var(--color-primary-dark);
    text-decoration: none;
}

.page-link.active {
    background-color: var(--color-primary);
    color: #ffffff;
    border-color: var(--color-primary);
    font-weight: 600;
}

.page-link:disabled,
.page-link.disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* ---------- Toolbar ---------- */
.toolbar {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-bottom: 1.1rem;
}

.toolbar .search-box {
    flex: 1 1 260px;
    min-width: 200px;
}

.page-header {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 1.4rem;
}

.page-header h1 {
    margin-bottom: 0.1rem;
}

.page-header .subtitle {
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

/* ---------- Login ---------- */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: calc(100vh - 56px);
    padding: 2.5rem 1rem;
    background: linear-gradient(135deg, #dbeafe 0%, #f0f4f8 50%, #ede9fe 100%);
}

.login-card {
    width: 100%;
    max-width: 420px;
    box-shadow: var(--shadow-lg);
    border: none;
}

.login-card h1 {
    text-align: center;
    margin-bottom: 0.3rem;
    font-size: 1.5rem;
}

.login-card .subtitle {
    text-align: center;
    color: var(--color-text-muted);
    margin-bottom: 1.6rem;
    font-size: 0.9rem;
}

/* ---------- Admin badges ---------- */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.2rem 0.6rem;
    border-radius: 999px;
    font-size: 0.76rem;
    font-weight: 650;
    white-space: nowrap;
    letter-spacing: 0.01em;
}

.badge-active {
    background-color: var(--color-success-bg);
    color: #065f46;
    border: 1px solid var(--color-success-border);
}

.badge-inactive {
    background-color: #f1f5f9;
    color: #64788b;
    border: 1px solid #e2e8f0;
}

.badge-admin {
    background-color: var(--color-primary-light);
    color: #1e40af;
    border: 1px solid #bfdbfe;
}

/* ---------- Version badge ---------- */
.version-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-left: 0.4rem;
    padding: 0.08rem 0.45rem;
    border-radius: 999px;
    font-size: 0.72rem;
    font-weight: 650;
    background-color: var(--color-primary-light);
    color: #1e40af;
    vertical-align: middle;
    letter-spacing: 0.02em;
    border: 1px solid #bfdbfe;
}

/* ---------- Footer ---------- */
.footer {
    margin-top: auto;
    padding: 1.4rem 0;
    color: var(--color-text-muted);
    font-size: 0.84rem;
    border-top: 1px solid var(--color-border);
    background-color: var(--color-surface);
}

/* ---------- Error page ---------- */
.error-page {
    text-align: center;
    padding: 4rem 1rem;
}

/* ---------- Error log admin page ---------- */
.filter-bar {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-bottom: 1rem;
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.filter-bar .level-link {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.7rem;
    border: 1.5px solid var(--color-border);
    border-radius: 999px;
    color: var(--color-text);
    font-size: 0.82rem;
    text-decoration: none;
    font-weight: 500;
    cursor: pointer;
    background-color: var(--color-surface);
    transition: background var(--transition), border-color var(--transition), color var(--transition);
}

.filter-bar .level-link:hover {
    background-color: #f1f5f9;
    border-color: #94a3b8;
    text-decoration: none;
    color: var(--color-text);
}

.filter-bar .level-link.active {
    background-color: var(--color-primary);
    color: #ffffff;
    border-color: var(--color-primary);
}

.filter-bar .filter-info {
    margin-left: auto;
    font-size: 0.85rem;
}

.table-wrap .logger {
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 0.84rem;
    color: var(--color-text-muted);
    max-width: 220px;
}

.message {
    max-width: 520px;
    white-space: pre-wrap;
    word-break: break-word;
    font-size: 0.92rem;
}

.exception-detail {
    margin-top: 0.4rem;
}

.exception-detail summary {
    cursor: pointer;
    font-size: 0.85rem;
    color: var(--color-primary);
    font-weight: 600;
    user-select: none;
}

.exception-detail summary:hover {
    text-decoration: underline;
}

.exception-detail pre {
    margin: 0.5rem 0 0;
    padding: 0.85rem;
    background-color: #0f172a;
    color: #e2e8f0;
    border-radius: var(--radius);
    font-size: 0.82rem;
    line-height: 1.6;
    overflow-x: auto;
    white-space: pre-wrap;
    word-break: break-word;
    box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.3);
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
    .nav-toggle {
        display: block;
    }

    .main-nav {
        display: none;
        flex-direction: column;
        align-items: stretch;
        width: 100%;
        order: 3;
        margin: 0.5rem 0 0;
        padding-bottom: 0.5rem;
        border-top: 1px solid rgba(255, 255, 255, 0.12);
    }

    .main-nav.open {
        display: flex;
    }

    .nav-link {
        padding: 0.65rem 0.5rem;
    }

    .topbar-inner {
        flex-wrap: wrap;
        padding-bottom: 0;
    }

    .account {
        order: 2;
        margin-left: 0;
    }

    .account-name {
        max-width: 110px;
    }

    .hide-sm {
        display: none;
    }

    h1 { font-size: 1.35rem; }
    h2 { font-size: 0.78rem; }

    .page-header {
        margin-bottom: 1rem;
    }

    .card-body {
        padding: 1rem;
    }
}

/* ---------- Right-to-left (Persian) ----------
   The layout sets dir="rtl" on <html> when the active culture is fa. Flexbox and
   block flow mirror automatically; the rules below fix the remaining physical
   (left/right) properties. */
[dir="rtl"] {
    direction: rtl;
    font-family: Tahoma, "Segoe UI", Arial, sans-serif;
}

[dir="rtl"] body {
    font-family: Tahoma, "Segoe UI", Arial, sans-serif;
}

[dir="rtl"] .main-nav {
    margin-left: 0;
    margin-right: 0.75rem;
}

[dir="rtl"] .account {
    margin-left: 0;
    margin-right: auto;
}

[dir="rtl"] .nav-toggle {
    margin-left: 0;
    margin-right: auto;
}

[dir="rtl"] th,
[dir="rtl"] td {
    text-align: right;
}

[dir="rtl"] .validation-summary-errors ul {
    padding-left: 0;
    padding-right: 1.2rem;
}

[dir="rtl"] .version-badge {
    margin-left: 0;
    margin-right: 0.4rem;
}

[dir="rtl"] .filter-bar .filter-info {
    margin-left: 0;
    margin-right: auto;
}

/* Keep log output and file names readable in their original direction. */
[dir="rtl"] .file-name,
[dir="rtl"] .logger,
[dir="rtl"] .exception-detail pre,
[dir="rtl"] code,
[dir="rtl"] input[type="email"],
[dir="rtl"] input[type="search"] {
    direction: ltr;
    text-align: right;
}

[dir="rtl"] .lang-switch {
    color: #e2e8f0;
    font-size: 0.9rem;
    font-weight: 600;
    padding: 0.35rem 0.7rem;
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: var(--radius-sm);
    white-space: nowrap;
}

[dir="rtl"] .lang-switch:hover {
    background-color: rgba(255, 255, 255, 0.12);
    color: #ffffff;
    text-decoration: none;
}

.lang-switch {
    color: #e2e8f0;
    font-size: 0.9rem;
    font-weight: 600;
    padding: 0.35rem 0.7rem;
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: var(--radius-sm);
    white-space: nowrap;
    transition: background var(--transition), color var(--transition);
}

.lang-switch:hover {
    background-color: rgba(255, 255, 255, 0.12);
    color: #ffffff;
    text-decoration: none;
}

/* ---------- Main content spacing ---------- */
.main-content {
    flex: 1;
    padding: 1.5rem 0;
}