:root {
    --navy-950: #06182d;
    --navy-900: #0d2f55;
    --navy-800: #174a78;
    --navy-700: #245e91;

    --red-600: #d64038;
    --red-700: #b8322c;

    --gold-500: #d8aa4f;
    --cyan-400: #64e4ff;

    --white: #ffffff;
    --background: #f4f7fa;
    --background-soft: #edf3f8;
    --background-warm: #f8f6f1;

    --text: #24364a;
    --muted: #607489;
    --line: #d8e2ec;

    --success: #1b7f4d;
    --warning: #ae7413;

    --shadow-small:
        0 8px 20px rgba(6, 24, 45, 0.08);

    --shadow-medium:
        0 17px 38px rgba(6, 24, 45, 0.14);

    --shadow-large:
        0 25px 60px rgba(6, 24, 45, 0.20);

    --radius-small: 8px;
    --radius-medium: 15px;
    --radius-large: 22px;

    --maximum-width: 1240px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background: var(--background);
    color: var(--text);
    font-family: Arial, Helvetica, sans-serif;
    line-height: 1.65;
}

img {
    display: block;
    max-width: 100%;
}

a {
    color: inherit;
    text-decoration: none;
}

button,
input,
select {
    font: inherit;
}

button {
    cursor: pointer;
}

.container {
    width: min(
        calc(100% - 40px),
        var(--maximum-width)
    );

    margin-inline: auto;
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    padding: 0;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ================================================================
   TOP BAR
================================================================ */

.top-bar {
    overflow: hidden;
    background: var(--navy-950);
    color: rgba(255, 255, 255, 0.92);
}

.top-bar-inner {
    min-height: 56px;
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 24px;
}

.moving-message {
    min-width: 0;
    overflow: hidden;
    white-space: nowrap;
}

.moving-message-track {
    display: inline-flex;
    align-items: center;
    min-width: max-content;
    animation: movingText 21s linear infinite;
    font-size: 0.87rem;
    font-weight: 600;
    letter-spacing: 0.015em;
}

.moving-message-track span {
    padding-right: 110px;
}

@keyframes movingText {
    from {
        transform: translateX(100%);
    }

    to {
        transform: translateX(-100%);
    }
}

.social-links {
    display: flex;
    align-items: center;
    gap: 8px;
}

.social-link {
    width: 43px;
    height: 43px;
    display: grid;
    place-items: center;
    overflow: hidden;
    border: 2px solid rgba(255, 255, 255, 0.18);
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.06);

    transition:
        transform 180ms ease,
        background 180ms ease,
        border-color 180ms ease;
}

.social-link:hover,
.social-link:focus-visible {
    transform: translateY(-3px);
    border-color: rgba(255, 255, 255, 0.82);
    background: rgba(255, 255, 255, 0.14);
    outline: none;
}

.social-link svg {
    width: 100%;
    height: 100%;
}

@media (prefers-reduced-motion: reduce) {
    .moving-message-track {
        animation: none;
    }
}

/* ================================================================
   HEADER
================================================================ */

.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.98);
    border-bottom: 1px solid var(--line);
    backdrop-filter: blur(12px);
}

.header-inner {
    min-height: 96px;
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 28px;
}

.branding {
    min-width: 280px;
    display: flex;
    align-items: center;
    gap: 15px;
}

.branding-logo {
    width: 76px;
    height: 76px;
    flex: 0 0 76px;
    overflow: hidden;
    border: 3px solid #e3ebf3;
    border-radius: 50%;
    background: var(--white);
    box-shadow: var(--shadow-small);
}

.branding-logo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.branding-text strong {
    display: block;
    color: var(--navy-950);
    font-family: Georgia, "Times New Roman", serif;
    font-size: 1.4rem;
    line-height: 1.1;
}

.main-navigation {
    justify-self: center;
}

.main-navigation ul {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 3px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.main-navigation a {
    display: block;
    padding: 11px;
    border-bottom: 3px solid transparent;
    color: var(--navy-950);
    font-size: 0.9rem;
    font-weight: 700;

    transition:
        color 180ms ease,
        border-color 180ms ease;
}

.main-navigation a:hover,
.main-navigation a:focus-visible,
.main-navigation a.active {
    color: var(--red-600);
    border-bottom-color: var(--red-600);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.icon-button {
    width: 43px;
    height: 43px;
    display: grid;
    place-items: center;
    border: 1px solid var(--line);
    border-radius: 50%;
    background: var(--white);
    color: var(--navy-950);
    font-size: 1.12rem;

    transition:
        background 180ms ease,
        color 180ms ease;
}

.icon-button:hover,
.icon-button:focus-visible {
    background: var(--navy-900);
    color: var(--white);
}

.menu-button {
    display: none;
}

/* ================================================================
   SEARCH
================================================================ */

.search-panel {
    display: none;
    background: var(--background-soft);
    border-top: 1px solid var(--line);
}

.search-panel.open {
    display: block;
}

.search-form {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 10px;
    padding: 17px 0;
}

.search-form input {
    width: 100%;
    padding: 13px 15px;
    border: 1px solid #bdc9d4;
    border-radius: var(--radius-small);
    background: var(--white);
    color: var(--text);
    outline: none;
}

.search-form input:focus {
    border-color: var(--navy-800);
    box-shadow:
        0 0 0 3px rgba(23, 74, 120, 0.13);
}

/* ================================================================
   BUTTONS
================================================================ */

.button {
    min-height: 46px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 0 19px;
    border: 1px solid transparent;
    border-radius: var(--radius-small);
    font-size: 0.87rem;
    font-weight: 800;

    transition:
        transform 180ms ease,
        background 180ms ease,
        border-color 180ms ease;
}

.button:hover,
.button:focus-visible {
    transform: translateY(-2px);
}

.button-primary {
    background: var(--navy-900);
    border-color: var(--navy-900);
    color: var(--white);
}

.button-primary:hover,
.button-primary:focus-visible {
    background: var(--navy-950);
    border-color: var(--navy-950);
}

.button-outline {
    background: var(--white);
    border-color: var(--line);
    color: var(--navy-900);
}

.button-outline:hover,
.button-outline:focus-visible {
    border-color: var(--navy-800);
    background: var(--background-soft);
}

/* ================================================================
   QUICK LINKS
================================================================ */

.quick-links-bar {
    background: var(--red-600);
    color: var(--white);
}

.quick-links-inner {
    min-height: 47px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
    font-size: 0.87rem;
    font-weight: 700;
}

.quick-links-inner a:hover,
.quick-links-inner a:focus-visible {
    opacity: 0.78;
}

/* ================================================================
   PAGE HERO
================================================================ */

.page-hero {
    position: relative;
    overflow: hidden;
    padding: 88px 0 78px;
    background:
        linear-gradient(
            125deg,
            rgba(6, 24, 45, 0.99),
            rgba(23, 74, 120, 0.94)
        );
    color: var(--white);
}

.page-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        radial-gradient(
            circle at 85% 30%,
            rgba(100, 228, 255, 0.18),
            transparent 30%
        ),
        radial-gradient(
            circle at 20% 90%,
            rgba(216, 170, 79, 0.14),
            transparent 32%
        );
}

.page-hero-inner {
    position: relative;
    z-index: 1;
    max-width: 860px;
}

.page-kicker {
    display: inline-flex;
    align-items: center;
    margin-bottom: 14px;
    color: var(--cyan-400);
    font-size: 0.78rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.15em;
}

.page-hero h1 {
    margin: 0;
    font-family: Georgia, "Times New Roman", serif;
    font-size: clamp(2.8rem, 6vw, 5rem);
    font-weight: 600;
    line-height: 1.02;
}

.page-hero p {
    max-width: 720px;
    margin: 22px 0 0;
    color: rgba(255, 255, 255, 0.84);
    font-size: 1.05rem;
}

/* ================================================================
   GALLERY SUMMARY
================================================================ */

.gallery-section {
    padding: 76px 0 90px;
}

.gallery-summary {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
    margin-bottom: 34px;
}

.summary-card {
    padding: 24px;
    border: 1px solid var(--line);
    border-radius: var(--radius-medium);
    background: var(--white);
    box-shadow: var(--shadow-small);
}

.summary-card strong {
    display: block;
    color: var(--navy-950);
    font-family: Georgia, "Times New Roman", serif;
    font-size: 2rem;
    line-height: 1;
}

.summary-card span {
    display: block;
    margin-top: 8px;
    color: var(--muted);
    font-size: 0.86rem;
    font-weight: 700;
}

/* ================================================================
   GALLERY CONTROLS
================================================================ */

.gallery-controls {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 20px;
    align-items: center;
    margin-bottom: 28px;
    padding: 18px;
    border: 1px solid var(--line);
    border-radius: var(--radius-medium);
    background: var(--white);
}

.gallery-search {
    position: relative;
}

.gallery-search input {
    width: 100%;
    padding: 13px 16px;
    border: 1px solid #bcc9d5;
    border-radius: var(--radius-small);
    background: var(--white);
    color: var(--text);
    outline: none;
}

.gallery-search input:focus {
    border-color: var(--navy-800);
    box-shadow:
        0 0 0 3px rgba(23, 74, 120, 0.12);
}

.gallery-filters {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 8px;
    flex-wrap: wrap;
}

.gallery-filter-button {
    min-height: 41px;
    padding: 0 16px;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: var(--white);
    color: var(--navy-900);
    font-size: 0.8rem;
    font-weight: 800;
}

.gallery-filter-button:hover,
.gallery-filter-button:focus-visible,
.gallery-filter-button.active {
    border-color: var(--navy-900);
    background: var(--navy-900);
    color: var(--white);
}

/* ================================================================
   CERTIFICATES
================================================================ */

.certificate-grid {
    display: grid;
    grid-template-columns:
        repeat(3, minmax(0, 1fr));
    gap: 25px;
}

.certificate-card {
    display: flex;
    min-width: 0;
    flex-direction: column;
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: var(--radius-large);
    background: var(--white);
    box-shadow: var(--shadow-small);

    transition:
        transform 220ms ease,
        box-shadow 220ms ease,
        border-color 220ms ease;
}

.certificate-card:hover {
    transform: translateY(-6px);
    border-color: #b8c7d5;
    box-shadow: var(--shadow-medium);
}

.certificate-preview {
    position: relative;
    height: 300px;
    overflow: hidden;
    border-bottom: 1px solid var(--line);
    background:
        linear-gradient(
            135deg,
            #e7edf4,
            #f8fafc
        );
}

.certificate-preview iframe {
    width: 100%;
    height: 100%;
    border: 0;
    background: var(--white);
    pointer-events: none;
}

.certificate-preview-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding: 16px;
    background:
        linear-gradient(
            to top,
            rgba(6, 24, 45, 0.58),
            transparent 42%
        );
    opacity: 0;

    transition:
        opacity 180ms ease;
}

.certificate-card:hover .certificate-preview-overlay {
    opacity: 1;
}

.certificate-preview-overlay span {
    padding: 8px 14px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.94);
    color: var(--navy-950);
    font-size: 0.77rem;
    font-weight: 800;
}

.certificate-missing {
    height: 100%;
    display: grid;
    place-items: center;
    padding: 30px;
    text-align: center;
}

.certificate-missing-icon {
    width: 72px;
    height: 72px;
    display: grid;
    place-items: center;
    margin: 0 auto 15px;
    border-radius: 50%;
    background: var(--navy-900);
    color: var(--white);
    font-size: 1.8rem;
}

.certificate-missing strong {
    display: block;
    color: var(--navy-950);
}

.certificate-missing span {
    display: block;
    margin-top: 6px;
    color: var(--muted);
    font-size: 0.82rem;
}

.certificate-body {
    display: flex;
    flex: 1;
    flex-direction: column;
    padding: 23px;
}

.certificate-topline {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 13px;
}

.certificate-category {
    display: inline-flex;
    align-items: center;
    min-height: 29px;
    padding: 0 10px;
    border-radius: 999px;
    background: rgba(214, 64, 56, 0.10);
    color: var(--red-600);
    font-size: 0.69rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.07em;
}

.certificate-year {
    color: var(--muted);
    font-size: 0.78rem;
    font-weight: 800;
}

.certificate-body h2 {
    margin: 0;
    color: var(--navy-950);
    font-family: Georgia, "Times New Roman", serif;
    font-size: 1.36rem;
    line-height: 1.25;
}

.certificate-issuer {
    margin: 10px 0 0;
    color: var(--navy-800);
    font-size: 0.79rem;
    font-weight: 800;
}

.certificate-description {
    margin: 14px 0 0;
    color: var(--muted);
    font-size: 0.9rem;
    line-height: 1.6;
}

.certificate-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 9px;
    margin-top: auto;
    padding-top: 20px;
}

.certificate-unavailable {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 45px;
    margin-top: auto;
    padding-top: 20px;
    color: var(--warning);
    font-size: 0.8rem;
    font-weight: 800;
}

.gallery-empty {
    display: none;
    padding: 55px 25px;
    border: 1px solid var(--line);
    border-radius: var(--radius-large);
    background: var(--white);
    text-align: center;
}

.gallery-empty.show {
    display: block;
}

.gallery-empty h2 {
    margin: 0;
    color: var(--navy-950);
    font-family: Georgia, "Times New Roman", serif;
}

.gallery-empty p {
    margin: 8px 0 0;
    color: var(--muted);
}

.certificate-card.hidden {
    display: none;
}

/* ================================================================
   FOOTER
================================================================ */

.site-footer {
    background: var(--navy-950);
    color: rgba(255, 255, 255, 0.77);
}

.footer-top {
    display: grid;
    grid-template-columns:
        1.35fr
        1fr
        1fr
        1fr;
    gap: 38px;
    padding: 60px 0 45px;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 18px;
}

.footer-logo {
    width: 64px;
    height: 64px;
    overflow: hidden;
    border: 3px solid rgba(255, 255, 255, 0.19);
    border-radius: 50%;
    background: var(--white);
}

.footer-logo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.footer-brand strong {
    color: var(--white);
    font-family: Georgia, "Times New Roman", serif;
    font-size: 1.22rem;
}

.footer-about {
    max-width: 430px;
    margin: 0;
    font-size: 0.92rem;
}

.footer-column h3 {
    margin: 0 0 17px;
    color: var(--white);
    font-size: 0.88rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

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

.footer-links li + li {
    margin-top: 9px;
}

.footer-links a:hover,
.footer-links a:focus-visible {
    color: var(--white);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.14);
}

.footer-bottom-inner {
    min-height: 65px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    font-size: 0.83rem;
}

/* ================================================================
   RESPONSIVE
================================================================ */

@media (max-width: 1130px) {
    .main-navigation {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        display: none;
        background: var(--white);
        border-top: 1px solid var(--line);
        border-bottom: 1px solid var(--line);
        box-shadow: var(--shadow-medium);
    }

    .main-navigation.open {
        display: block;
    }

    .main-navigation ul {
        width: min(
            calc(100% - 40px),
            var(--maximum-width)
        );

        margin-inline: auto;
        padding: 13px 0 18px;
        flex-direction: column;
        align-items: stretch;
    }

    .main-navigation a {
        border-bottom: 1px solid var(--line);
    }

    .menu-button {
        display: grid;
    }

    .certificate-grid {
        grid-template-columns:
            repeat(2, minmax(0, 1fr));
    }

    .footer-top {
        grid-template-columns:
            repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 850px) {
    .top-bar-inner {
        grid-template-columns: 1fr;
        gap: 8px;
        padding: 9px 0;
    }

    .social-links {
        justify-content: center;
    }

    .header-inner {
        min-height: 79px;
        gap: 12px;
    }

    .branding {
        min-width: 0;
    }

    .branding-logo {
        width: 58px;
        height: 58px;
        flex-basis: 58px;
    }

    .branding-text strong {
        font-size: 1.05rem;
    }

    .gallery-summary {
        grid-template-columns: 1fr;
    }

    .gallery-controls {
        grid-template-columns: 1fr;
    }

    .gallery-filters {
        justify-content: flex-start;
    }

    .footer-bottom-inner {
        align-items: flex-start;
        flex-direction: column;
        padding: 18px 0;
    }
}

@media (max-width: 620px) {
    .container {
        width: min(
            calc(100% - 28px),
            var(--maximum-width)
        );
    }

    .social-link {
        width: 39px;
        height: 39px;
    }

    .quick-links-inner {
        justify-content: flex-start;
        gap: 14px 24px;
        padding: 11px 0;
    }

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

    .page-hero {
        padding: 66px 0 60px;
    }

    .gallery-section {
        padding: 58px 0 70px;
    }

    .certificate-grid,
    .footer-top {
        grid-template-columns: 1fr;
    }

    .certificate-preview {
        height: 330px;
    }

    .certificate-actions {
        grid-template-columns: 1fr;
    }
}