/* =========================================================
   GLOBAL SCIENCE TECH
   APPROVED INNER PAGE VISUAL SYSTEM
   ========================================================= */

:root {
    --gst-navy: #061b35;
    --gst-navy-2: #0b2f59;
    --gst-blue: #087cff;
    --gst-blue-2: #176fe5;
    --gst-text: #082d58;
    --gst-muted: #68809d;
    --gst-light: #f4f8fd;
    --gst-border: #dce6f1;
    --gst-white: #ffffff;
    --gst-shadow: 0 18px 50px rgba(7, 39, 76, 0.10);
    --gst-radius: 16px;
}

/* ---------------------------------------------------------
   RESET
   --------------------------------------------------------- */

.gst-page,
.gst-page * {
    box-sizing: border-box;
}

.gst-page {
    margin: 0;
    font-family: Inter, Arial, Helvetica, sans-serif;
    color: var(--gst-text);
    background: #fff;
    line-height: 1.6;
}

.gst-page a {
    color: inherit;
}

/* ---------------------------------------------------------
   HEADER
   --------------------------------------------------------- */

.gst-inner-header {
    height: 68px;
    background: #fff;
    border-bottom: 1px solid #edf2f7;
    display: flex;
    align-items: center;
    position: relative;
    z-index: 20;
}

.gst-inner-header-inner {
    width: min(1240px, calc(100% - 80px));
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.gst-logo {
    display: inline-flex;
    align-items: center;
    gap: 11px;
    text-decoration: none;
}

.gst-logo-mark {
    width: 38px;
    height: 38px;
    border: 2px solid var(--gst-blue);
    border-radius: 50%;
    display: grid;
    place-items: center;
    color: var(--gst-blue);
    font-size: 20px;
    line-height: 1;
}

.gst-logo-text {
    font-size: 15px;
    line-height: 0.95;
    font-weight: 900;
    letter-spacing: .2px;
    color: #08254a;
}

.gst-main-nav {
    display: flex;
    align-items: center;
    gap: 27px;
}

.gst-main-nav a {
    text-decoration: none;
    font-size: 13px;
    font-weight: 650;
    color: #082b55;
    transition: color .2s ease;
}

.gst-main-nav a:hover,
.gst-main-nav a.active {
    color: var(--gst-blue);
}

.gst-search-link {
    color: var(--gst-blue) !important;
    font-size: 19px !important;
}

/* ---------------------------------------------------------
   HERO
   --------------------------------------------------------- */

.gst-inner-hero {
    background:
        radial-gradient(
            circle at 78% 25%,
            rgba(28, 103, 190, .25),
            transparent 34%
        ),
        linear-gradient(
            120deg,
            #041a34 0%,
            #082b54 100%
        );
    min-height: 310px;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.gst-inner-hero::after {
    content: "";
    position: absolute;
    width: 520px;
    height: 520px;
    right: -170px;
    top: -250px;
    border-radius: 50%;
    border: 1px solid rgba(255,255,255,.08);
    box-shadow:
        0 0 0 70px rgba(255,255,255,.025),
        0 0 0 140px rgba(255,255,255,.02);
}

.gst-inner-hero-inner {
    width: min(1240px, calc(100% - 80px));
    margin: 0 auto;
    position: relative;
    z-index: 2;
}

.gst-kicker {
    color: #2992ff;
    font-size: 11px;
    font-weight: 900;
    letter-spacing: 2.2px;
    text-transform: uppercase;
    margin-bottom: 15px;
}

.gst-inner-hero .gst-kicker {
    color: #38a0ff;
}

.gst-inner-hero h1 {
    margin: 0;
    color: #fff;
    font-size: clamp(42px, 5vw, 68px);
    line-height: 1.02;
    letter-spacing: -2px;
    font-weight: 900;
    max-width: 850px;
}

.gst-inner-hero p {
    color: #dbe9f8;
    font-size: 17px;
    margin: 18px 0 0;
    max-width: 720px;
}

/* ---------------------------------------------------------
   PAGE CONTENT
   --------------------------------------------------------- */

.gst-page-section {
    padding: 82px 0;
}

.gst-page-section.light {
    background: var(--gst-light);
}

.gst-page-container {
    width: min(1240px, calc(100% - 80px));
    margin: 0 auto;
}

.gst-section-heading {
    display: flex;
    justify-content: space-between;
    align-items: end;
    gap: 30px;
    margin-bottom: 38px;
}

.gst-section-heading h2 {
    margin: 0;
    font-size: 42px;
    line-height: 1.08;
    color: var(--gst-text);
    letter-spacing: -1px;
}

.gst-section-heading p {
    color: var(--gst-muted);
    margin: 13px 0 0;
    max-width: 700px;
}

.gst-lead {
    color: #69809b;
    font-size: 17px;
    line-height: 1.8;
}

/* ---------------------------------------------------------
   BUTTONS
   --------------------------------------------------------- */

.gst-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 45px;
    padding: 0 21px;
    border-radius: 7px;
    text-decoration: none;
    font-size: 13px;
    font-weight: 800;
    border: 1px solid transparent;
    transition: transform .2s ease, box-shadow .2s ease;
}

.gst-btn:hover {
    transform: translateY(-2px);
}

.gst-btn-primary {
    background: var(--gst-blue);
    color: #fff !important;
    box-shadow: 0 9px 22px rgba(8,124,255,.20);
}

.gst-btn-outline {
    border-color: #b9cbe0;
    color: var(--gst-text) !important;
    background: #fff;
}

/* ---------------------------------------------------------
   CONFERENCE CARDS
   --------------------------------------------------------- */

.gst-card-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
}

.gst-card {
    background: #fff;
    border: 1px solid var(--gst-border);
    border-radius: var(--gst-radius);
    overflow: hidden;
    box-shadow: 0 8px 30px rgba(7, 39, 76, .055);
    transition: transform .2s ease, box-shadow .2s ease;
}

.gst-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--gst-shadow);
}

.gst-card-image {
    width: 100%;
    height: 215px;
    object-fit: cover;
    display: block;
    background:
        linear-gradient(135deg, #092e5b, #087cff);
}

.gst-card-body {
    padding: 25px;
}

.gst-card-body h3 {
    margin: 0 0 14px;
    color: var(--gst-text);
    font-size: 21px;
    line-height: 1.25;
}

.gst-meta {
    display: flex;
    align-items: center;
    gap: 9px;
    color: #67809c;
    font-size: 13px;
    margin: 8px 0;
}

.gst-meta-icon {
    color: var(--gst-blue);
    width: 20px;
}

.gst-card-link {
    display: inline-block;
    margin-top: 17px;
    color: var(--gst-blue);
    text-decoration: none;
    font-size: 13px;
    font-weight: 850;
}

/* ---------------------------------------------------------
   GALLERY
   --------------------------------------------------------- */

.gst-gallery-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
}

.gst-gallery-item {
    background: #fff;
    border-radius: 14px;
    overflow: hidden;
    border: 1px solid var(--gst-border);
    box-shadow: 0 8px 25px rgba(7,39,76,.05);
}

.gst-gallery-item img {
    display: block;
    width: 100%;
    height: 230px;
    object-fit: cover;
    transition: transform .3s ease;
}

.gst-gallery-item:hover img {
    transform: scale(1.04);
}

.gst-gallery-caption {
    padding: 15px 17px;
    font-size: 14px;
    font-weight: 700;
}

/* ---------------------------------------------------------
   NEWS
   --------------------------------------------------------- */

.gst-news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
}

.gst-news-card {
    background: #fff;
    border: 1px solid var(--gst-border);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 8px 28px rgba(7,39,76,.05);
}

.gst-news-card img {
    display: block;
    width: 100%;
    height: 215px;
    object-fit: cover;
}

.gst-news-content {
    padding: 25px;
}

.gst-news-date {
    color: var(--gst-blue);
    font-size: 11px;
    font-weight: 850;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.gst-news-card h3 {
    margin: 9px 0 12px;
    font-size: 21px;
    line-height: 1.25;
    color: var(--gst-text);
}

.gst-news-card p {
    color: var(--gst-muted);
    font-size: 14px;
    line-height: 1.7;
}

/* ---------------------------------------------------------
   CONTACT
   --------------------------------------------------------- */

.gst-contact-grid {
    display: grid;
    grid-template-columns: 1.15fr .85fr;
    gap: 28px;
}

.gst-contact-card {
    background: #fff;
    border: 1px solid var(--gst-border);
    border-radius: 16px;
    padding: 38px;
    box-shadow: var(--gst-shadow);
}

.gst-contact-card.dark {
    background: var(--gst-navy-2);
    border: 0;
    color: #fff;
}

.gst-contact-card h2 {
    margin: 0 0 15px;
    font-size: 32px;
    line-height: 1.15;
}

.gst-contact-card.dark h2 {
    color: #fff;
}

.gst-contact-card p {
    color: var(--gst-muted);
}

.gst-contact-card.dark p {
    color: #d9e7f7;
}

.gst-contact-email {
    display: inline-block;
    margin-top: 12px;
    color: var(--gst-blue);
    font-weight: 800;
    text-decoration: none;
}

.gst-contact-card.dark .gst-contact-email {
    color: #42a3ff;
}

/* ---------------------------------------------------------
   EMPTY STATE
   --------------------------------------------------------- */

.gst-empty {
    grid-column: 1 / -1;
    background: #fff;
    border: 1px dashed #c8d7e8;
    border-radius: 15px;
    padding: 40px;
    text-align: center;
    color: #7187a1;
}

/* ---------------------------------------------------------
   FOOTER
   --------------------------------------------------------- */

.gst-footer {
    background: #061a32;
    color: #d8e7f7;
    padding: 58px 0 35px;
}

.gst-footer-grid {
    width: min(1240px, calc(100% - 80px));
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 50px;
}

.gst-footer strong {
    display: block;
    color: #fff;
    font-size: 14px;
    margin-bottom: 15px;
}

.gst-footer p {
    color: #aac0d8;
    font-size: 14px;
    line-height: 1.8;
    margin: 0;
}

.gst-footer a {
    display: block;
    color: #aac0d8;
    text-decoration: none;
    font-size: 13px;
    margin: 7px 0;
}

.gst-footer a:hover {
    color: #fff;
}

/* ---------------------------------------------------------
   RESPONSIVE
   --------------------------------------------------------- */

@media (max-width: 1000px) {

    .gst-main-nav {
        gap: 16px;
    }

    .gst-main-nav a {
        font-size: 12px;
    }

    .gst-card-grid,
    .gst-news-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .gst-gallery-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .gst-contact-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 760px) {

    .gst-inner-header {
        height: auto;
        padding: 15px 0;
    }

    .gst-inner-header-inner {
        width: min(100% - 35px, 600px);
        flex-direction: column;
        gap: 16px;
    }

    .gst-main-nav {
        flex-wrap: wrap;
        justify-content: center;
        gap: 13px 17px;
    }

    .gst-inner-hero {
        min-height: 280px;
    }

    .gst-inner-hero-inner,
    .gst-page-container {
        width: min(100% - 35px, 600px);
    }

    .gst-inner-hero h1 {
        font-size: 43px;
    }

    .gst-section-heading {
        display: block;
    }

    .gst-section-heading h2 {
        font-size: 34px;
    }

    .gst-card-grid,
    .gst-news-grid,
    .gst-gallery-grid {
        grid-template-columns: 1fr;
    }

    .gst-footer-grid {
        width: min(100% - 35px, 600px);
        grid-template-columns: 1fr;
        gap: 28px;
    }
}