/* ========================================
   IISL Design System — NEVG-inspired
   ======================================== */

:root {
    --iisl-accent: #00ccff;
    --iisl-accent-dark: #00a8d4;
    --iisl-dark: #0b1220;
    --iisl-dark-soft: #151d2e;
    --iisl-surface: #f4f7fa;
    --iisl-muted: #5b6577;
    --iisl-border: #e4e9f0;
    --iisl-white: #ffffff;
    --iisl-font-display: "Outfit", sans-serif;
    --iisl-font-body: "Plus Jakarta Sans", sans-serif;
    --iisl-radius: 12px;
    --iisl-shadow: 0 8px 30px rgba(11, 18, 32, 0.08);
    --iisl-shadow-hover: 0 16px 40px rgba(11, 18, 32, 0.14);
    --iisl-nav-h: 76px;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--iisl-font-body);
    color: var(--iisl-dark);
    background: var(--iisl-white);
    padding-top: var(--iisl-nav-h);
    line-height: 1.65;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--iisl-font-display);
    font-weight: 650;
    letter-spacing: -0.02em;
    color: var(--iisl-dark);
}

a {
    color: var(--iisl-accent-dark);
    text-decoration: none;
    transition: color 0.25s ease;
}

a:hover {
    color: var(--iisl-accent);
}

img {
    max-width: 100%;
    height: auto;
}

.text-accent { color: var(--iisl-accent) !important; }
.bg-accent { background-color: var(--iisl-accent) !important; }
.bg-surface { background-color: var(--iisl-surface) !important; }
.bg-dark-iisl { background-color: var(--iisl-dark) !important; }

/* ---------- Spinner ---------- */
#spinner {
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.8s ease-out, visibility 0s linear 0.5s;
    z-index: 99999;
}

#spinner.show {
    transition: opacity 0.8s ease-out, visibility 0s linear 0s;
    visibility: visible;
    opacity: 1;
}

/* ---------- Buttons ---------- */
.btn {
    font-family: var(--iisl-font-body);
    font-weight: 600;
    border-radius: 8px;
    padding: 0.75rem 1.5rem;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.btn-iisl {
    background: var(--iisl-accent);
    color: var(--iisl-dark);
    border: 2px solid var(--iisl-accent);
}

.btn-iisl:hover {
    background: var(--iisl-accent-dark);
    border-color: var(--iisl-accent-dark);
    color: var(--iisl-white);
    transform: translateY(-1px);
    box-shadow: var(--iisl-shadow);
}

.btn-iisl-outline {
    background: transparent;
    color: var(--iisl-white);
    border: 2px solid rgba(255, 255, 255, 0.85);
}

.btn-iisl-outline:hover {
    background: var(--iisl-white);
    color: var(--iisl-dark);
}

.btn-iisl-dark {
    background: var(--iisl-dark);
    color: var(--iisl-white);
    border: 2px solid var(--iisl-dark);
}

.btn-iisl-dark:hover {
    background: var(--iisl-dark-soft);
    color: var(--iisl-accent);
}

.btn-square {
    width: 38px;
    height: 38px;
    padding: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.back-to-top {
    position: fixed;
    width: 48px;
    height: 48px;
    right: 24px;
    bottom: 24px;
    z-index: 99;
    background: var(--iisl-accent) !important;
    border: none;
    display: none;
}

.back-to-top:hover {
    background: var(--iisl-accent-dark) !important;
}

/* ---------- Navbar ---------- */
.iisl-navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1030;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid transparent;
    transition: box-shadow 0.3s ease, border-color 0.3s ease, background 0.3s ease;
}

.iisl-navbar.is-scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 4px 24px rgba(11, 18, 32, 0.08);
    border-bottom-color: var(--iisl-border);
}

.iisl-navbar .navbar {
    min-height: var(--iisl-nav-h);
    padding-top: 0.4rem;
    padding-bottom: 0.4rem;
}

.iisl-navbar .navbar-logo {
    height: 48px;
    width: auto;
    object-fit: contain;
}

.iisl-navbar .nav-link {
    font-family: var(--iisl-font-body);
    font-weight: 550;
    font-size: 0.95rem;
    color: var(--iisl-dark) !important;
    padding: 0.5rem 0.85rem !important;
    position: relative;
}

.iisl-navbar .nav-link:hover,
.iisl-navbar .nav-link.active {
    color: var(--iisl-accent-dark) !important;
}

.iisl-navbar .nav-link.active::after {
    content: "";
    position: absolute;
    left: 0.85rem;
    right: 0.85rem;
    bottom: 0.15rem;
    height: 2px;
    background: var(--iisl-accent);
    border-radius: 2px;
}

.iisl-navbar .btn-quote {
    margin-left: 0.75rem;
    white-space: nowrap;
}

.iisl-navbar .navbar-toggler {
    border: 1px solid var(--iisl-border);
    padding: 0.4rem 0.55rem;
}

.iisl-navbar .navbar-toggler:focus {
    box-shadow: none;
}

@media (max-width: 991.98px) {
    .iisl-navbar .navbar-collapse {
        background: var(--iisl-white);
        padding: 1rem;
        border-radius: var(--iisl-radius);
        box-shadow: var(--iisl-shadow);
        margin-top: 0.5rem;
    }

    .iisl-navbar .btn-quote {
        margin: 0.75rem 0 0;
        display: inline-block;
        width: 100%;
        text-align: center;
    }

    .iisl-navbar .navbar-logo {
        height: 40px;
    }
}

/* ---------- Section helpers ---------- */
.section {
    padding: 5rem 0;
}

.section-sm {
    padding: 3.5rem 0;
}

.section-head {
    max-width: 640px;
    margin: 0 auto 3rem;
    text-align: center;
}

.section-head .eyebrow {
    display: inline-block;
    font-family: var(--iisl-font-body);
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--iisl-accent-dark);
    margin-bottom: 0.75rem;
}

.section-head h2 {
    font-size: clamp(1.75rem, 3vw, 2.35rem);
    margin-bottom: 0.75rem;
}

.section-head p {
    color: var(--iisl-muted);
    margin-bottom: 0;
    font-size: 1.05rem;
}

/* ---------- Hero carousel ---------- */
.hero-wrap {
    position: relative;
    height: calc(100vh - var(--iisl-nav-h));
    min-height: 560px;
    max-height: 900px;
    overflow: hidden;
}

.hero-wrap #carouselId,
.hero-wrap .carousel-inner,
.hero-wrap .carousel-item {
    height: 100%;
}

.hero-wrap .carousel-item {
    position: relative;
}

.hero-wrap .carousel-item::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, rgba(11, 18, 32, 0.78) 0%, rgba(11, 18, 32, 0.45) 55%, rgba(0, 204, 255, 0.25) 100%);
    z-index: 1;
}

.hero-wrap .carousel-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    display: block;
}

.hero-wrap .carousel-caption {
    position: absolute;
    inset: 0;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    text-align: left;
    left: 0;
    right: 0;
    bottom: 0;
    padding: 0;
}

.hero-wrap .carousel-content {
    max-width: 720px;
}

.hero-brand {
    display: inline-block;
    font-family: var(--iisl-font-display);
    font-weight: 700;
    font-size: 0.95rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--iisl-accent);
    margin-bottom: 1rem;
    animation: heroFadeUp 0.7s ease both;
}

.hero-wrap .carousel-content h1 {
    color: var(--iisl-white);
    font-size: clamp(2rem, 5vw, 3.5rem);
    line-height: 1.15;
    margin-bottom: 1.25rem;
    animation: heroFadeUp 0.8s 0.1s ease both;
}

.hero-wrap .carousel-content p {
    color: rgba(255, 255, 255, 0.9);
    font-size: clamp(1rem, 2vw, 1.2rem);
    max-width: 540px;
    margin-bottom: 2rem;
    animation: heroFadeUp 0.8s 0.2s ease both;
}

.hero-ctas {
    display: flex;
    flex-wrap: wrap;
    gap: 0.85rem;
    animation: heroFadeUp 0.8s 0.3s ease both;
}

.hero-wrap .carousel-control-prev,
.hero-wrap .carousel-control-next {
    width: 52px;
    height: 52px;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: 50%;
    opacity: 1;
}

.hero-wrap .carousel-control-prev { left: 1.25rem; }
.hero-wrap .carousel-control-next { right: 1.25rem; }

.hero-wrap .carousel-control-prev:hover,
.hero-wrap .carousel-control-next:hover {
    background: var(--iisl-accent);
}

.hero-wrap .carousel-indicators [data-bs-target] {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.45);
    border: 0;
    opacity: 1;
}

.hero-wrap .carousel-indicators .active {
    background: var(--iisl-accent);
    width: 28px;
    border-radius: 999px;
}

@keyframes heroFadeUp {
    from { opacity: 0; transform: translateY(18px); }
    to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 767.98px) {
    .hero-wrap {
        min-height: 480px;
        height: 70vh;
    }

    .hero-wrap .carousel-control-prev,
    .hero-wrap .carousel-control-next {
        display: none;
    }
}

/* ---------- Feature grid (Why Choose Us) ---------- */
.feature-card {
    background: var(--iisl-white);
    border: 1px solid var(--iisl-border);
    border-radius: var(--iisl-radius);
    padding: 1.75rem;
    height: 100%;
    transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--iisl-shadow);
    border-color: rgba(0, 204, 255, 0.45);
}

.feature-card .icon-wrap {
    width: 52px;
    height: 52px;
    border-radius: 12px;
    background: rgba(0, 204, 255, 0.12);
    color: var(--iisl-accent-dark);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.15rem;
    margin-bottom: 0.5rem;
}

.feature-card p {
    color: var(--iisl-muted);
    margin: 0;
    font-size: 0.95rem;
}

/* ---------- About ---------- */
.about-media {
    position: relative;
}

.about-media .about-img-main {
    width: 78%;
    border-radius: var(--iisl-radius);
    object-fit: cover;
    box-shadow: var(--iisl-shadow);
}

.about-media .about-img-secondary {
    position: absolute;
    width: 55%;
    right: 0;
    bottom: 8%;
    border-radius: var(--iisl-radius);
    border: 4px solid var(--iisl-white);
    box-shadow: var(--iisl-shadow-hover);
    object-fit: cover;
}

.experience-badge {
    position: absolute;
    left: 0;
    bottom: 12%;
    background: var(--iisl-accent);
    color: var(--iisl-dark);
    border-radius: var(--iisl-radius);
    padding: 1.1rem 1.25rem;
    box-shadow: var(--iisl-shadow);
    z-index: 2;
    min-width: 120px;
    text-align: center;
    animation: badgePulse 3s ease-in-out infinite;
}

.experience-badge strong {
    display: block;
    font-family: var(--iisl-font-display);
    font-size: 2rem;
    line-height: 1;
}

.experience-badge span {
    font-size: 0.8rem;
    font-weight: 600;
}

@keyframes badgePulse {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-4px); }
}

.about-checklist {
    list-style: none;
    padding: 0;
    margin: 1.5rem 0;
}

.about-checklist li {
    position: relative;
    padding-left: 1.75rem;
    margin-bottom: 0.65rem;
    color: var(--iisl-muted);
}

.about-checklist li::before {
    content: "\f00c";
    font-family: "Font Awesome 5 Free";
    font-weight: 900;
    position: absolute;
    left: 0;
    color: var(--iisl-accent-dark);
}

/* ---------- Catalog cards ---------- */
.catalog-card {
    background: var(--iisl-white);
    border: 1px solid var(--iisl-border);
    border-radius: var(--iisl-radius);
    overflow: hidden;
    height: 100%;
    display: flex;
    flex-direction: column;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.catalog-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--iisl-shadow-hover);
}

.catalog-card .catalog-img {
    height: 200px;
    overflow: hidden;
    background: var(--iisl-surface);
}

.catalog-card .catalog-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.catalog-card:hover .catalog-img img {
    transform: scale(1.06);
}

.catalog-card .catalog-body {
    padding: 1.35rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.catalog-card .catalog-tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--iisl-accent-dark);
    margin-bottom: 0.5rem;
}

.catalog-card h3 {
    font-size: 1.15rem;
    margin-bottom: 0.5rem;
}

.catalog-card p {
    color: var(--iisl-muted);
    font-size: 0.95rem;
    flex: 1;
}

.catalog-card .catalog-link {
    font-weight: 650;
    color: var(--iisl-dark);
    margin-top: 0.75rem;
}

.catalog-card .catalog-link i {
    color: var(--iisl-accent-dark);
    margin-left: 0.35rem;
    transition: transform 0.2s ease;
}

.catalog-card:hover .catalog-link i {
    transform: translateX(4px);
}

/* ---------- Industry / logo strip ---------- */
.logo-strip {
    overflow: hidden;
    mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}

.logo-track {
    display: flex;
    gap: 1.5rem;
    width: max-content;
    animation: logoScroll 28s linear infinite;
}

.logo-item {
    flex: 0 0 auto;
    width: 180px;
    background: var(--iisl-white);
    border: 1px solid var(--iisl-border);
    border-radius: var(--iisl-radius);
    padding: 1rem;
    text-align: center;
}

.logo-item img {
    height: 72px;
    width: 100%;
    object-fit: cover;
    border-radius: 8px;
    margin-bottom: 0.65rem;
}

.logo-item span {
    display: block;
    font-weight: 650;
    font-size: 0.9rem;
    color: var(--iisl-dark);
}

@keyframes logoScroll {
    from { transform: translateX(0); }
    to { transform: translateX(-50%); }
}

/* ---------- Testimonial ---------- */
.quote-block {
    background: var(--iisl-white);
    border: 1px solid var(--iisl-border);
    border-radius: var(--iisl-radius);
    padding: 2.5rem;
    max-width: 820px;
    margin: 0 auto;
    box-shadow: var(--iisl-shadow);
    position: relative;
}

.quote-block::before {
    content: "\201C";
    font-family: var(--iisl-font-display);
    font-size: 5rem;
    line-height: 1;
    color: var(--iisl-accent);
    position: absolute;
    top: 0.5rem;
    left: 1.25rem;
    opacity: 0.5;
}

.quote-block p {
    font-size: 1.15rem;
    color: var(--iisl-dark-soft);
    margin-bottom: 1.25rem;
    position: relative;
    z-index: 1;
}

.quote-block cite {
    font-style: normal;
    font-weight: 700;
    color: var(--iisl-dark);
}

.quote-block .cite-role {
    display: block;
    font-weight: 500;
    color: var(--iisl-muted);
    font-size: 0.9rem;
}

/* ---------- CTA band ---------- */
.cta-band {
    background: linear-gradient(120deg, var(--iisl-dark) 0%, #123047 60%, #0a5f75 100%);
    color: var(--iisl-white);
    border-radius: 0;
    padding: 4rem 0;
    text-align: center;
}

.cta-band h2 {
    color: var(--iisl-white);
    margin-bottom: 0.75rem;
}

.cta-band p {
    color: rgba(255, 255, 255, 0.8);
    max-width: 560px;
    margin: 0 auto 1.75rem;
}

/* ---------- Contact ---------- */
.contact-split {
    background: var(--iisl-surface);
    border-radius: var(--iisl-radius);
    overflow: hidden;
}

.contact-info-pane {
    background: var(--iisl-dark);
    color: var(--iisl-white);
    padding: 2.5rem;
    height: 100%;
}

.contact-info-pane h3 {
    color: var(--iisl-white);
    margin-bottom: 1rem;
}

.contact-info-pane p {
    color: rgba(255, 255, 255, 0.75);
}

.contact-meta {
    list-style: none;
    padding: 0;
    margin: 2rem 0 0;
}

.contact-meta li {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.25rem;
}

.contact-meta .meta-icon {
    width: 42px;
    height: 42px;
    border-radius: 10px;
    background: rgba(0, 204, 255, 0.15);
    color: var(--iisl-accent);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-meta strong {
    display: block;
    font-size: 0.85rem;
    color: var(--iisl-accent);
    margin-bottom: 0.15rem;
}

.contact-meta a,
.contact-meta span {
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.95rem;
}

.contact-form-pane {
    padding: 2.5rem;
    background: var(--iisl-white);
}

.contact-form-pane .form-control {
    border: 1px solid var(--iisl-border);
    border-radius: 8px;
    padding: 0.85rem 1rem;
    background: var(--iisl-surface);
}

.contact-form-pane .form-control:focus {
    border-color: var(--iisl-accent);
    box-shadow: 0 0 0 3px rgba(0, 204, 255, 0.2);
    background: var(--iisl-white);
}

/* ---------- Page header ---------- */
.page-header {
    position: relative;
    background: linear-gradient(120deg, rgba(11, 18, 32, 0.88), rgba(11, 18, 32, 0.65)), url(../img/carousel-1.jpg) center center / cover no-repeat;
    padding: 4.5rem 0 3.5rem;
    text-align: center;
}

.page-header h1 {
    color: var(--iisl-white);
    font-size: clamp(1.85rem, 4vw, 2.75rem);
    margin-bottom: 0.75rem;
}

.page-header .breadcrumb {
    justify-content: center;
    margin: 0;
    background: transparent;
}

.page-header .breadcrumb-item,
.page-header .breadcrumb-item a {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.95rem;
}

.page-header .breadcrumb-item.active {
    color: var(--iisl-accent);
}

.page-header .breadcrumb-item + .breadcrumb-item::before {
    color: rgba(255, 255, 255, 0.5);
}

/* ---------- Team grid ---------- */
.team-card {
    text-align: center;
    background: var(--iisl-white);
    border: 1px solid var(--iisl-border);
    border-radius: var(--iisl-radius);
    padding: 1.5rem;
    height: 100%;
    transition: box-shadow 0.25s ease;
}

.team-card:hover {
    box-shadow: var(--iisl-shadow);
}

.team-card img {
    width: 140px;
    height: 140px;
    object-fit: cover;
    border-radius: 50%;
    border: 3px solid rgba(0, 204, 255, 0.35);
    margin-bottom: 1rem;
}

.team-card h3 {
    font-size: 1.1rem;
    margin-bottom: 0.25rem;
}

.team-card p {
    color: var(--iisl-muted);
    margin: 0;
    font-size: 0.9rem;
}

/* ---------- Detail pages ---------- */
.detail-media img {
    border-radius: var(--iisl-radius);
    box-shadow: var(--iisl-shadow);
    width: 100%;
    object-fit: cover;
}

.detail-body h2 {
    margin-bottom: 1rem;
}

.detail-body ul {
    padding-left: 1.2rem;
}

.detail-body li {
    margin-bottom: 0.5rem;
    color: var(--iisl-muted);
}

/* ---------- Footer ---------- */
.iisl-footer {
    background: var(--iisl-dark);
    color: rgba(255, 255, 255, 0.75);
    padding-top: 4rem;
}

.iisl-footer h4 {
    color: var(--iisl-white);
    font-size: 1.05rem;
    margin-bottom: 1.25rem;
}

.iisl-footer a {
    color: rgba(255, 255, 255, 0.75);
}

.iisl-footer a:hover {
    color: var(--iisl-accent);
}

.iisl-footer .footer-brand img {
    max-height: 72px;
    width: auto;
    background: var(--iisl-white);
    border-radius: 8px;
    padding: 0.5rem;
    margin-bottom: 1rem;
}

.iisl-footer .footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.iisl-footer .footer-links li {
    margin-bottom: 0.55rem;
}

.iisl-footer .footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: 3rem;
    padding: 1.25rem 0;
    font-size: 0.9rem;
}

.iisl-footer .footer-bottom a {
    color: var(--iisl-accent);
}

/* ---------- 404 ---------- */
.error-block {
    text-align: center;
    padding: 5rem 1rem;
}

.error-block .code {
    font-family: var(--iisl-font-display);
    font-size: clamp(4rem, 12vw, 7rem);
    color: var(--iisl-accent);
    line-height: 1;
    margin-bottom: 0.5rem;
}

/* ---------- Misc legacy overrides ---------- */
.btn-primary {
    background-color: var(--iisl-accent) !important;
    border-color: var(--iisl-accent) !important;
    color: var(--iisl-dark) !important;
}

.btn-primary:hover {
    background-color: var(--iisl-accent-dark) !important;
    border-color: var(--iisl-accent-dark) !important;
    color: var(--iisl-white) !important;
}

.btn-secondary {
    background-color: var(--iisl-dark) !important;
    border-color: var(--iisl-dark) !important;
}

.text-primary {
    color: var(--iisl-accent-dark) !important;
}

.text-secondary {
    color: var(--iisl-muted) !important;
}

.pagination .page-link {
    color: var(--iisl-dark);
    border-radius: 6px !important;
    margin: 0 0.15rem;
}

.pagination .page-item.active .page-link {
    background: var(--iisl-accent);
    border-color: var(--iisl-accent);
    color: var(--iisl-dark);
}