:root {
    --bayta-navy: #0b1f3a;
    --bayta-navy-2: #102a4f;
    --bayta-blue: #1d4ed8;
    --bayta-blue-2: #1e40af;
    --bayta-sky: #38bdf8;
    --bayta-bg: #f8fafc;
    --bayta-card: #ffffff;
    --bayta-line: #e2e8f0;
    --bayta-line-strong: #93c5fd;
    --bayta-text: #0f172a;
    --bayta-muted: #475569;
    --bayta-shadow: 0 18px 46px rgba(15, 23, 42, 0.08);
}

html {
    scroll-padding-top: 92px;
}

body {
    color: var(--bayta-text);
    background: var(--bayta-bg);
    font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.container,
.hero-container,
.research-hero-content,
.research-overview-content,
.projects-container,
.gallery-container,
.publications-container,
.join-container {
    max-width: 1160px;
}

.navbar {
    position: fixed !important;
    top: 0 !important;
    right: 0 !important;
    left: 0 !important;
    z-index: 1050 !important;
    width: 100% !important;
    padding: 0 !important;
    background: rgba(248, 250, 252, 0.92) !important;
    border-bottom: 1px solid rgba(226, 232, 240, 0.9) !important;
    box-shadow: 0 8px 24px rgba(15, 23, 42, 0.06) !important;
    backdrop-filter: blur(18px) !important;
}

.nav-container {
    width: min(1160px, calc(100% - 40px));
    min-height: 76px;
    margin: 0 auto;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.nav-logo,
.nav-logo a,
.bayta-brand {
    display: inline-flex;
    align-items: center;
    flex-direction: row;
    min-width: 0;
    gap: 10px;
    color: inherit;
    text-decoration: none;
}

.nav-logo .bayta-brand-logo,
.bayta-brand-logo {
    width: 176px;
    height: 48px;
    object-fit: contain;
    object-position: left center;
    mix-blend-mode: multiply;
    flex: 0 0 auto;
}

.nav-logo .bayta-brand-logo:hover {
    transform: none;
    filter: none;
}

.bayta-brand-product {
    display: block;
    min-width: 0;
    padding-left: 15px;
    border-left: 1px solid rgba(148, 163, 184, 0.45);
}

.bayta-brand-product small,
.bayta-brand-product strong {
    display: block;
}

.bayta-brand-product small {
    margin-bottom: 3px;
    color: var(--bayta-blue);
    font-size: 0.68rem;
    font-weight: 800;
    letter-spacing: 0.12em;
    line-height: 1.1;
    text-transform: uppercase;
}

.bayta-brand-product strong {
    color: var(--bayta-navy);
    font-size: 1.04rem;
    font-weight: 800;
    letter-spacing: 0;
    line-height: 1.05;
    white-space: nowrap;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.nav-link {
    min-height: 40px;
    display: inline-flex;
    align-items: center;
    padding: 0 12px;
    color: var(--bayta-muted) !important;
    border-radius: 999px;
    font-size: 0.92rem;
    font-weight: 700;
    text-align: center;
    text-decoration: none;
    white-space: nowrap;
    transition: color 160ms ease, background 160ms ease, transform 160ms ease;
}

.nav-link:hover,
.nav-link:focus,
.nav-link.active {
    color: var(--bayta-blue) !important;
    background: #eef6ff;
    text-shadow: none;
}

.nav-link::after,
.logo-text,
.logo-tech,
.logo-line {
    display: none !important;
}

.hamburger {
    width: 44px;
    height: 44px;
    display: none;
    flex: 0 0 auto;
    padding: 0;
    border: 1px solid var(--bayta-line);
    border-radius: 14px;
    background: #ffffff;
    cursor: pointer;
}

.bar {
    display: block;
    width: 18px;
    height: 2px;
    margin: 4px auto;
    border-radius: 999px;
    background: var(--bayta-text);
}

.hero,
.research-hero,
.publications-hero,
.image-showcase,
.current-projects,
.join-section,
.join-research {
    position: relative;
    overflow: hidden;
    color: #ffffff;
    background:
        radial-gradient(circle at 86% 12%, rgba(56, 189, 248, 0.25), transparent 28%),
        linear-gradient(135deg, #07162a 0%, var(--bayta-navy) 48%, #0f2b56 100%) !important;
}

.hero::before,
.research-hero::before,
.publications-hero::before,
.image-showcase::before,
.current-projects::before,
.join-section::before,
.join-research::before {
    content: "";
    position: absolute;
    inset: 0;
    opacity: 0.14;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.18) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.18) 1px, transparent 1px);
    background-size: 44px 44px;
}

.hero {
    min-height: 100vh;
    padding-top: 112px;
}

.research-hero,
.publications-hero {
    min-height: 48vh;
    padding: 132px 20px 58px !important;
    display: flex;
    align-items: center;
    margin-top: 0;
}

.hero-container,
.research-hero-content,
.publications-hero-content,
.showcase-content,
.projects-container,
.join-research .container {
    position: relative;
    z-index: 2;
}

.hero-title,
.research-hero h1,
.publications-hero h1 {
    color: #ffffff !important;
    font-size: clamp(2.4rem, 5vw, 4.6rem) !important;
    font-weight: 800 !important;
    letter-spacing: 0 !important;
    line-height: 1.02;
    text-shadow: none !important;
}

.hero-subtitle,
.hero-description,
.research-hero p,
.publications-hero p,
.showcase-text p,
.current-projects p,
.join-research p {
    color: #cbd5e1 !important;
}

.btn,
.back-to-home a,
.back-to-research a {
    min-height: 42px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    font-weight: 800;
    text-decoration: none;
    transition: transform 160ms ease, background 160ms ease, box-shadow 160ms ease;
}

.btn-primary,
.back-to-home a,
.back-to-research a {
    color: #ffffff !important;
    background: var(--bayta-blue) !important;
    border: 1px solid var(--bayta-blue) !important;
    box-shadow: 0 12px 24px rgba(29, 78, 216, 0.22) !important;
}

.btn-primary:hover,
.btn-primary:focus,
.back-to-home a:hover,
.back-to-research a:hover {
    color: #ffffff !important;
    background: var(--bayta-blue-2) !important;
    border-color: var(--bayta-blue-2) !important;
    transform: translateY(-1px);
}

.hero .btn-primary {
    color: var(--bayta-navy) !important;
    background: #ffffff !important;
    border-color: rgba(255, 255, 255, 0.72) !important;
}

.btn-secondary {
    color: #dbeafe !important;
    background: rgba(255, 255, 255, 0.08) !important;
    border: 1px solid rgba(203, 213, 225, 0.52) !important;
    box-shadow: none !important;
}

.btn-secondary:hover,
.btn-secondary:focus {
    color: #ffffff !important;
    background: var(--bayta-blue) !important;
    border-color: var(--bayta-blue) !important;
}

section {
    padding: 72px 0;
}

.about,
.leadership,
.research-overview,
.research-gallery,
.publications-section,
.publications-heading-section {
    background:
        radial-gradient(circle at 12% 10%, rgba(56, 189, 248, 0.12), transparent 30%),
        linear-gradient(180deg, #f8fbff 0%, #eef6ff 42%, #f8fafc 100%) !important;
}

.section-title,
.research-overview h2,
.gallery-container h2,
.opportunities h3,
.publications-title,
.publications-container h2,
.contact-info h3 {
    color: var(--bayta-text) !important;
    font-weight: 800 !important;
    letter-spacing: 0;
    text-shadow: none !important;
}

.section-title::after {
    background: var(--bayta-sky) !important;
    box-shadow: none !important;
}

.about-text p,
.research-overview p,
.gallery-caption p,
.opportunity-card p,
.publications-container p,
.research-themes p,
.pub-authors,
.pub-journal,
.contact-info p {
    color: var(--bayta-muted) !important;
}

.stat,
.timeline-content,
.research-area,
.leadership-card,
.gallery-item,
.opportunity-card,
.project-card,
.join-form,
.publications-list,
.publication-entry,
.contact-info {
    border: 1px solid var(--bayta-line-strong) !important;
    border-radius: 16px !important;
    background: var(--bayta-card) !important;
    box-shadow: var(--bayta-shadow) !important;
    backdrop-filter: none !important;
}

.timeline-content h3,
.research-area h3,
.leadership-card h3,
.gallery-caption h3,
.opportunity-card h4,
.project-card h3,
.publication-entry strong {
    color: var(--bayta-text) !important;
}

.timeline-content h4,
.timeline-date,
.stat h3,
.research-area i,
.leadership-icon i,
.pub-title,
.publications-container li strong,
.tech-tag {
    color: var(--bayta-blue) !important;
}

.timeline-content p,
.research-area p,
.project-card p {
    color: var(--bayta-muted) !important;
}

.timeline::before {
    background: linear-gradient(180deg, var(--bayta-blue), var(--bayta-sky)) !important;
    box-shadow: none !important;
}

.timeline-content::before {
    background: var(--bayta-blue) !important;
    border-color: var(--bayta-bg) !important;
    box-shadow: 0 0 0 3px var(--bayta-sky) !important;
}

.research-area,
.leadership-card,
.opportunity-card,
.project-card,
.gallery-item,
.stat {
    transition: transform 180ms ease, box-shadow 180ms ease;
}

.research-area:hover,
.leadership-card:hover,
.opportunity-card:hover,
.project-card:hover,
.gallery-item:hover,
.stat:hover {
    transform: translateY(-3px);
    box-shadow: 0 20px 46px rgba(15, 23, 42, 0.12) !important;
}

.tech-tag {
    background: #e0f2fe !important;
    border: 1px solid #bae6fd !important;
    border-radius: 999px !important;
}

.profile-image,
.about-profile-image,
.research-bg-image,
.showcase-bg-image,
.research-image img,
.research-image-side img,
.gallery-item img {
    border: 1px solid var(--bayta-line) !important;
    border-radius: 16px !important;
    box-shadow: var(--bayta-shadow) !important;
}

.profile-image {
    border-color: rgba(147, 197, 253, 0.75) !important;
}

.contact {
    background: #ffffff !important;
}

.contact-content {
    align-items: stretch;
}

.contact-info {
    padding: 2rem;
}

.contact-item i,
.social-link,
.leadership-card li:before,
.research-areas-list li::before {
    color: var(--bayta-blue) !important;
}

.social-link {
    background: #eff6ff !important;
    border: 1px solid #bfdbfe !important;
}

.footer {
    background: var(--bayta-navy) !important;
    color: #cbd5e1 !important;
}

.back-to-home,
.back-to-research {
    top: 94px !important;
}

.publications-section {
    padding: 44px 0 56px !important;
}

.publication-entry {
    margin-bottom: 12px;
    padding: 16px !important;
}

.publication-entry:hover {
    margin: 0 0 12px !important;
    background: #f8fbff !important;
}

@media (max-width: 980px) {
    .nav-container {
        min-height: 76px;
    }

    .bayta-brand-logo {
        width: 148px;
        height: 42px;
    }

    .bayta-brand-product {
        padding-left: 12px;
    }

    .bayta-brand-product small {
        font-size: 0.6rem;
    }

    .bayta-brand-product strong {
        font-size: 0.92rem;
    }

    .hamburger {
        display: block;
    }

    .nav-menu {
        position: fixed;
        inset: 86px 20px auto 20px;
        display: grid;
        gap: 4px;
        max-height: calc(100vh - 106px);
        padding: 18px;
        border: 1px solid var(--bayta-line);
        border-radius: 20px;
        background: #ffffff;
        box-shadow: 0 18px 42px rgba(15, 23, 42, 0.12);
        opacity: 0;
        overflow-y: auto;
        pointer-events: none;
        transform: translateY(-12px);
        transition: opacity 180ms ease, transform 180ms ease;
    }

    .nav-menu.active {
        opacity: 1;
        pointer-events: auto;
        transform: translateY(0);
    }

    .nav-link {
        width: 100%;
        justify-content: flex-start;
        min-height: 46px;
        padding: 0 12px;
        border-radius: 12px;
        text-align: left;
    }
}

@media (max-width: 760px) {
    .nav-container {
        width: min(100% - 28px, 1160px);
    }

    .contact-info {
        padding: 1.5rem;
    }

    .bayta-brand-product {
        display: none;
    }

    .hero-container,
    .about-content,
    .research-content,
    .showcase-content,
    .research-content-with-image {
        grid-template-columns: 1fr !important;
        gap: 2rem;
    }

    .hero {
        padding-top: 128px;
    }

    .research-hero,
    .publications-hero {
        padding-top: 128px !important;
    }

    .back-to-home,
    .back-to-research {
        position: static !important;
        margin: 96px 20px 0;
        text-align: center;
    }
}