@font-face {
    font-family: "IRANSansWeb(FaNum)";
    src: url("../fonts/iransans/eot/IRANSansWeb(FaNum).eot");
    src: url("../fonts/iransans/eot/IRANSansWeb(FaNum).eot?#iefix") format("embedded-opentype"),
    url("../fonts/iransans/woff2/IRANSansWeb(FaNum).woff2") format("woff2"),
    url("../fonts/iransans/woff/IRANSansWeb(FaNum).woff") format("woff"),
    url("../fonts/iransans/ttf/IRANSansWeb(FaNum).ttf") format("truetype");
}
@font-face {
    font-family: 'b-titr';
    src: url('../fonts/B-Titr/B Titr Bold_0.ttf') format('truetype');
    font-weight: normal;
    font-style: normal;
}


:root {
    --arvin-primary: #0a3b66; /* آبی تیره لوگو */
    --arvin-secondary: #197c7b; /* فیروزه‌ای مایل به سبز */
    --arvin-accent: #21a5b6; /* آبی روشن/اکسنت */
    --arvin-light: #f8f9fa;
    --arvin-dark: #212529;
    --theme-bg: #f5f7fa;
    --theme-surface: #ffffff;
    --theme-surface-soft: #f8f9fa;
    --theme-text: #212529;
    --theme-muted: #6c757d;
    --theme-border: #dee2e6;
    --theme-shadow: rgba(0, 0, 0, 0.1);
    --theme-input-bg: #ffffff;
    --theme-input-text: #212529;
    --theme-link: #0c4d8c;
    --theme-footer-start: #082b4e;
    --theme-footer-mid: #135f5e;
    --theme-footer-end: #1fa2b3;
}

[data-theme="dark"] {
    --theme-bg: #0f172a;
    --theme-surface: #172033;
    --theme-surface-soft: #111827;
    --theme-text: #e5e7eb;
    --theme-muted: #cbd5e1;
    --theme-border: #334155;
    --theme-shadow: rgba(0, 0, 0, 0.45);
    --theme-input-bg: #0f172a;
    --theme-input-text: #e5e7eb;
    --theme-link: #67e8f9;
    --theme-footer-start: #06111f;
    --theme-footer-mid: #09283a;
    --theme-footer-end: #0f4f5d;
    --arvin-dark: #e5e7eb;
}

html,
body {
    background-color: var(--theme-bg) !important;
}

body {
    font-family: 'IRANSansWeb(FaNum)', sans-serif !important;
    background-color: var(--theme-bg);
    color: var(--arvin-dark);
    line-height: 1.8;
    transition: background-color 0.25s ease, color 0.25s ease;
}

body,
body p,
body li,
body td,
body .card,
body .accordion-body {
    color: var(--theme-text);
}

.navbar,
.dropdown-menu,
.card,
.accordion-item,
.accordion-button,
.list-group-item,
.modal-content,
.table,
.bg-white,
.bg-light {
    background-color: var(--theme-surface) !important;
    color: var(--theme-text) !important;
    border-color: var(--theme-border) !important;
}

.text-muted,
.accordion-button.collapsed,
.dropdown-item {
    color: var(--theme-muted) !important;
}

.text-dark,
.text-arvin-blue,
.nav-link.text-arvin-blue {
    color: var(--arvin-primary) !important;
}

[data-theme="dark"] .text-dark,
[data-theme="dark"] .text-arvin-blue,
[data-theme="dark"] .nav-link.text-arvin-blue,
[data-theme="dark"] .dropdown-item,
[data-theme="dark"] .navbar-toggler {
    color: var(--theme-text) !important;
}

[data-theme="dark"] .navbar-toggler {
    border-color: var(--theme-border);
}

[data-theme="dark"] .navbar-toggler-icon {
    filter: invert(1) grayscale(1) brightness(2);
}

[data-theme="dark"] .dropdown-item:hover,
[data-theme="dark"] .accordion-button:not(.collapsed) {
    background-color: #1f2a44 !important;
    color: #ffffff !important;
}

[data-theme="dark"] section:not(.footer),
[data-theme="dark"] .position-relative[style*="background-color"] {
    background-color: var(--theme-bg) !important;
}

[data-theme="dark"] img:not(.logo-img):not(.footer-logo) {
    filter: brightness(0.98) contrast(1.04) saturate(0.96);
}

.theme-surface,
.page-section,
.content-section,
.box,
.panel,
.widget,
.irf-form,
form,
.table-responsive,
.accordion,
.nav-pills .nav-link {
    background-color: var(--theme-surface) !important;
    color: var(--theme-text) !important;
    border-color: var(--theme-border) !important;
}

.form-control,
.form-select,
.form-check-input,
input,
textarea,
select {
    background-color: var(--theme-input-bg) !important;
    color: var(--theme-input-text) !important;
    border-color: var(--theme-border) !important;
}

.form-control::placeholder,
textarea::placeholder,
input::placeholder {
    color: var(--theme-muted) !important;
    opacity: 1;
}

a:not(.btn):not(.dropdown-item):not(.nav-link):not(.footer a) {
    color: var(--theme-link);
}

.table th,
.table td,
label,
.form-label,
small,
.text-secondary,
.text-body,
.text-black,
.hero-paragraph,
.lead {
    color: var(--theme-text) !important;
}

.border,
.border-top,
.border-bottom,
.border-start,
.border-end,
hr {
    border-color: var(--theme-border) !important;
}

.shadow,
.shadow-sm,
.shadow-lg {
    box-shadow: 0 0.5rem 1.5rem var(--theme-shadow) !important;
}

.home-hero {
    background-color: #efeff1;
    overflow: hidden;
    transition: background-color 0.25s ease, background 0.25s ease;
}

.home-hero-image-wrap {
    isolation: isolate;
    border-radius: 0.75rem;
    background-color: #efeff1;
    transition: background-color 0.25s ease, box-shadow 0.25s ease;
}

.home-hero-image {
    display: block;
    background-color: #efeff1;
    mix-blend-mode: multiply;
    transition: filter 0.25s ease, box-shadow 0.25s ease, background-color 0.25s ease;
}

.twrr-return-table {
    direction: rtl;
    border-collapse: collapse;
    margin-bottom: 0;
}

.twrr-return-table th,
.twrr-return-table td {
    border-width: 0 0 1px 0 !important;
    padding: 1rem 0.75rem;
    vertical-align: middle;
}

.twrr-return-table th {
    font-weight: 700;
    color: var(--theme-text) !important;
    background-color: transparent !important;
}

.twrr-description {
    text-align: right;
    width: 45%;
}

.twrr-description strong,
.twrr-description span {
    display: block;
}

.twrr-description strong {
    font-weight: 800;
    margin-bottom: 0.25rem;
}

.twrr-description span {
    font-size: 0.9rem;
    color: var(--theme-text);
}

.twrr-return-value {
    color: #008000 !important;
    font-weight: 700;
    text-align: center;
}

.home-hero-decoration {
    background: linear-gradient(135deg, rgba(232,230,230,0.02) 0%, rgba(236,234,234,0.01) 100%);
    z-index: 0;
}

[data-theme="dark"] .home-hero {
    background: linear-gradient(135deg, #f7f8fb 0%, #f1f4f8 48%, #e9eef5 100%) !important;
}

[data-theme="dark"] .home-hero-image-wrap {
    background: #f4f6fa;
    box-shadow: 0 24px 64px rgba(15, 23, 42, 0.12), 0 0 0 1px rgba(15, 23, 42, 0.06);
}

[data-theme="dark"] .home-hero-image {
    background-color: #f4f6fa;
    mix-blend-mode: multiply;
    filter: brightness(1.01) contrast(1.03) saturate(0.98) !important;
    box-shadow: inset 0 0 0 1px rgba(15, 23, 42, 0.035);
}

[data-theme="dark"] .home-hero-decoration {
    background: radial-gradient(circle at 78% 18%, rgba(33, 165, 182, 0.08) 0%, rgba(33, 165, 182, 0) 36%),
    linear-gradient(135deg, rgba(255, 255, 255, 0.34) 0%, rgba(12, 77, 140, 0.035) 100%);
}

[data-theme="dark"] .home-hero .text-arvin-blue {
    color: #0d3f70 !important;
    text-shadow: 0 1px 0 rgba(255, 255, 255, 0.55);
}

[data-theme="dark"] .home-hero .text-success {
    color: #087f5b !important;
    text-shadow: 0 1px 0 rgba(255, 255, 255, 0.55);
}

[data-theme="dark"] .home-hero .lead,
[data-theme="dark"] .home-hero .text-muted {
    color: #405066 !important;
    font-weight: 500;
}

.twrr-return-table {
    --bs-table-bg: var(--theme-surface);
    --bs-table-color: var(--theme-text);
    --bs-table-border-color: var(--theme-border);
    --bs-table-striped-bg: var(--theme-surface-soft);
    --bs-table-striped-color: var(--theme-text);
    --bs-table-active-bg: rgba(10, 59, 102, 0.08);
    --bs-table-active-color: var(--arvin-primary);
    color: var(--theme-text) !important;
    vertical-align: middle;
}

.twrr-return-table th,
.twrr-return-table td {
    color: var(--theme-text) !important;
    background-color: transparent !important;
    border-color: var(--theme-border) !important;
    text-align: center;
}

.twrr-return-table thead th {
    color: var(--arvin-primary) !important;
    background-color: rgba(10, 59, 102, 0.08) !important;
    font-weight: 700;
}

[data-theme="dark"] .twrr-return-table {
    --bs-table-bg: #172033;
    --bs-table-color: #f8fafc;
    --bs-table-border-color: #475569;
    --bs-table-striped-bg: #1f2a44;
    --bs-table-striped-color: #f8fafc;
    --bs-table-active-bg: #263650;
    --bs-table-active-color: #f8fafc;
    box-shadow: 0 0 0 1px rgba(148, 163, 184, 0.2);
}

[data-theme="dark"] .twrr-return-table th,
[data-theme="dark"] .twrr-return-table td {
    color: #f8fafc !important;
    border-color: #475569 !important;
}

[data-theme="dark"] .twrr-return-table tbody tr:nth-of-type(odd) > * {
    background-color: #1f2a44 !important;
}

[data-theme="dark"] .twrr-return-table thead th {
    color: #ffffff !important;
    background-color: #263650 !important;
}

.titr-font{
    font-family: "b-titr",sans-serif !important;
}

.custom-dropdown {
    background-color: #197c7b; /* رنگ زمینه روشن */
    border-radius: 0.5rem;
    min-width: 220px;
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
    padding: 0.5rem 0;
    border: none;
}

.custom-dropdown .dropdown-item {
    text-align: right;
    padding: 0.5rem 1rem;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    color: #a2dfce;
}

.custom-dropdown .dropdown-item.hover-info:hover {
    background-color: #082b4e;
    transform: translateX(-5px);
    border-radius: 0.375rem;
}


/* فونت، رنگ و استایل تیتر اصلی */
.hero-title {
    font-family: 'BMitra', sans-serif;
    font-weight: 700;
    color: #249e78;
    letter-spacing: 0.5px;
    line-height: 1.3;
    padding: 12px 0;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    text-align: right;
    margin-bottom: 1.5rem; /* معادل mb-4 */
}

/* خط زیر تیتر */
.hero-title .bordered {
    border-bottom: 1px solid rgba(36, 158, 120, 0.3);
    padding-bottom: 4px;
}

/* استایل ویژه نام آروین در تیتر */
.hero-title .arvin-highlight {
    color: #1abc9c;
    letter-spacing: 3px;
    position: relative;
}

/* پاراگراف اصلی */
.hero-paragraph {
    text-align: justify;
    text-justify: inter-word;
    line-height: 1.8;
    margin-bottom: 1.5rem; /* معادل mb-4 */
}

/* هایلایت آبی کمرنگ برای نام آروین در متن */
.text-arvin-blue {
    color: #0c4d8c;
}

.img-hero-custom {
    max-width: 90%;
    display: block;
    margin: 0 auto;
}


.bg-arvin-secondary {
    background-color: var(--arvin-secondary);
    color: white;
    padding: 5px;
}

.text-arvin-accent {
    color: var(--arvin-accent);
}

.navbar-brand img {
    height: 40px;
}

.service-card {
    border: none;
    border-radius: 10px;
    overflow: hidden;
    transition: transform 0.3s, box-shadow 0.3s;
    height: 100%;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.service-icon {
    width: 4.25rem;
    height: 4.25rem;
    margin-inline: auto;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 1.25rem;
    background: linear-gradient(135deg, rgba(10, 59, 102, 0.1), rgba(33, 165, 182, 0.14));
    color: var(--arvin-primary);
    font-size: 2rem;
    box-shadow: inset 0 0 0 1px rgba(33, 165, 182, 0.18);
}

.service-card:hover .service-icon {
    background: linear-gradient(135deg, var(--arvin-primary), var(--arvin-accent));
    color: #ffffff;
}

.carousel-item img,
.carousel-item video {
    height: 680px;
    object-fit: cover;
}

.footer {
    background: linear-gradient(to right,
    var(--theme-footer-start),
    var(--theme-footer-mid),
    var(--theme-footer-end)) !important;
    color: white;
    padding: 50px 0 20px;
}

.footer,
.footer p,
.footer li,
.footer h5,
.footer a,
.footer .text-white {
    color: #ffffff !important;
}

[data-theme="dark"] .footer {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}


.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: white;
}

.social-icons a {
    color: white;
    font-size: 1.5rem;
    margin-left: 15px;
    transition: color 0.3s;
}

.social-icons a:hover {
    color: var(--arvin-accent);
}

.language-switcher {
    cursor: pointer;
}

.carousel-item img,
.carousel-item video {
    height: 400px;
}


.hero-buttons {
    justify-content: center;
    display: flex;
    gap: 1rem;
}

.carousel-item img,
.carousel-item video {
    height: 300px;
}

.stats-section .col-md-3 {
    margin-bottom: 30px;
}


.carousel-item img,
.carousel-item video {
    height: 250px;
}

.navbar-brand img {
    height: 30px;
}

.section-spacing {
    margin-top: 50px;
    margin-bottom: 50px;
}

/**
logo slider
**/
.logo-slider-section {
    background: #f8f9fa;
    padding: 30px 0;
    overflow: hidden;
}

.text-arvin-blue {
    color: #1a4f8a;
}

.logo-slider-container {
    position: relative;
    overflow: hidden;
    width: 100%;
}

.logo-slider-track {
    display: flex;
    gap: 25px;
    animation: scrollRight 15s linear infinite;
}

.logo-item {
    flex: 0 0 auto;
}

.logo-item img {
    height: 60px;
    width: auto;
    transition: transform 0.3s ease;
    filter: grayscale(0%) opacity(1);
}

.logo-item:hover img {
    filter: grayscale(0%) opacity(1) brightness(1.1);
    transform: scale(1.05);
}

@media (max-width: 1024px) {
    .logo-item img { height: 55px; }
}
@media (max-width: 768px) {
    .logo-item img { height: 45px; }
}
@media (max-width: 480px) {
    .logo-item img { height: 35px; }
}

@keyframes scrollRight {
    0% {
        transform: translateX(-100%);
    }
    100% {
        transform: translateX(100%);
    }
}
/**
end logo slider
**/

.logo-img {
    height: 80px !important;
    width: auto !important;
}

.arvin-navbar .navbar-collapse {
    gap: 0.75rem;
}

.arvin-nav-menu {
    align-items: center;
    gap: 0.15rem;
}

.arvin-nav-menu .nav-link {
    font-size: 0.92rem;
    padding-right: 0.45rem !important;
    padding-left: 0.45rem !important;
    white-space: nowrap;
    border-radius: 999px;
    transition: background-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}

.arvin-nav-menu .nav-link:hover,
.arvin-nav-menu .nav-link:focus-visible,
.arvin-nav-menu .nav-link.active,
.arvin-nav-menu .show > .nav-link {
    background: linear-gradient(135deg, var(--arvin-primary), var(--arvin-accent));
    color: #ffffff !important;
    box-shadow: 0 6px 16px rgba(12, 77, 140, 0.18);
}

.dropdown-item:hover,
.dropdown-item:focus,
.dropdown-item.active {
    background-color: rgba(33, 165, 182, 0.12) !important;
    color: var(--arvin-primary) !important;
}

.header-actions {
    gap: 0.4rem;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.theme-switcher {
    display: inline-flex;
    align-items: center;
    gap: 0.18rem;
    padding: 0.18rem;
    margin-inline-end: 0.25rem;
    background-color: var(--theme-surface-soft);
    border: 1px solid var(--theme-border);
    border-radius: 999px;
    box-shadow: 0 4px 12px var(--theme-shadow);
}

.theme-switcher__btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0;
    border: 0;
    border-radius: 50%;
    width: 2rem;
    height: 2rem;
    padding: 0;
    background: transparent;
    color: var(--theme-muted);
    font-size: 0.85rem;
    white-space: nowrap;
    transition: background-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}

.theme-switcher__btn.active {
    background: linear-gradient(135deg, var(--arvin-secondary), var(--arvin-accent));
    color: #ffffff;
    box-shadow: 0 3px 10px rgba(33, 165, 182, 0.35);
}

.theme-switcher__btn:focus-visible {
    outline: 2px solid var(--arvin-accent);
    outline-offset: 2px;
}

@media (max-width: 1399px) {
    .arvin-nav-menu .nav-link {
        font-size: 0.84rem;
        padding-right: 0.32rem !important;
        padding-left: 0.32rem !important;
    }

    .header-actions .btn {
        font-size: 0.82rem;
        padding-right: 0.55rem;
        padding-left: 0.55rem;
    }
}


@media (max-width: 768px) {
    .logo-img {
        height: 50px;
    }

    .header-actions {
        align-items: stretch !important;
        flex-direction: column;
        gap: 0.65rem;
        margin-top: 1rem;
    }

    .theme-switcher {
        justify-content: center;
        margin-inline-end: 0;
        width: fit-content;
        align-self: center;
    }

    .theme-switcher__btn {
        justify-content: center;
    }

    .header-actions .btn {
        width: 100%;
        margin-inline-end: 0 !important;
    }
}

.dropdown-menu .dropdown:hover > .dropdown-menu {
    display: block;
    margin-top: 0;
}