/* ============================================
   BASE LAYOUT & UTILITIES
   ============================================ */

.skip-link {
    position: absolute;
    top: -100%;
    left: 1rem;
    background: var(--accent-primary);
    color: var(--bg-primary);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    z-index: 1000;
    font-weight: 600;
    transition: top var(--transition-default);
}

.skip-link:focus {
    top: 1rem;
}

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

/* ============================================
   NAVBAR
   ============================================ */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(2, 9, 17, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-primary);
}

.navbar__container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.navbar__logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    font-size: 1.125rem;
    color: var(--text-primary);
}

.navbar__logo-icon {
    color: var(--accent-primary);
    font-weight: 700;
    font-size: 1rem;
}

.navbar__links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.navbar__link {
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    transition: color var(--transition-default);
    position: relative;
    padding: 0.25rem 0;
}

.navbar__link:hover {
    color: var(--text-primary);
}

.navbar__link.is-active {
    color: var(--accent-primary);
}

.navbar__link.is-active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--accent-primary);
    border-radius: 1px;
}

.navbar__toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 0.5rem;
    cursor: pointer;
}

.navbar__toggle-bar {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 1px;
    transition: var(--transition-default);
}

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

.hero {
    padding: 8rem 2rem 4rem;
    position: relative;
    overflow: hidden;
}

.hero__container {
    max-width: var(--container-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero__eyebrow {
    display: flex;
    align-items: center;
    gap: 1rem;
    color: var(--accent-primary);
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    margin-bottom: 1.5rem;
}

.hero__eyebrow-line {
    width: 40px;
    height: 1px;
    background: var(--accent-primary);
    flex-shrink: 0;
}

.hero__title {
    font-size: 2.75rem;
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

.hero__tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.hero__tags li {
    color: var(--text-secondary);
    font-size: 0.875rem;
    position: relative;
}

.hero__tags li:not(:last-child)::after {
    content: '\00B7';
    margin-left: 0.75rem;
    color: var(--text-muted);
}

.hero__description {
    color: var(--text-muted);
    font-size: 1rem;
    line-height: 1.7;
    margin-bottom: 2rem;
    max-width: 540px;
}

.hero__actions {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.hero__social {
    display: flex;
    gap: 1.25rem;
    align-items: center;
}

.hero__social a {
    color: var(--text-muted);
    transition: color var(--transition-default);
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero__social a:hover {
    color: var(--accent-primary);
}

/* Hero Visual */
.hero__visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero__photo-wrapper {
    position: relative;
    width: 280px;
    height: 280px;
}

.hero__photo-ring {
    position: absolute;
    inset: -8px;
    border-radius: 50%;
    border: 2px solid var(--accent-primary);
    opacity: 0.3;
}

.hero__photo {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
    border: 3px solid var(--accent-primary);
    box-shadow: 0 0 60px rgba(4, 218, 190, 0.15);
    background: var(--bg-card);
}

.hero__photo-wrapper--fallback {
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-card);
    border-radius: 50%;
    border: 3px solid var(--accent-primary);
}

.hero__photo-wrapper--fallback::after {
    content: 'BN';
    font-size: 4rem;
    font-weight: 700;
    color: var(--accent-primary);
}

.hero__orbit {
    position: absolute;
    inset: -40px;
    pointer-events: none;
}

.hero__orbit-item {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 64px;
    height: 64px;
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    pointer-events: auto;
    animation: orbit-item 25s linear infinite;
}

.hero__orbit-icon {
    width: 38px;
    height: 38px;
    object-fit: contain;
}

.hero__orbit-item--1 {
    --orbit-angle: 0deg;
    --orbit-radius: 200px;
}

.hero__orbit-item--2 {
    --orbit-angle: 90deg;
    --orbit-radius: 200px;
}

.hero__orbit-item--3 {
    --orbit-angle: 180deg;
    --orbit-radius: 200px;
}

.hero__orbit-item--4 {
    --orbit-angle: 270deg;
    --orbit-radius: 200px;
}

.hero__badge {
    position: absolute;
    bottom: -50px;
    left: 50%;
    transform: translateX(-50%);
}

.hero__badge-icon {
    width: 95px;
    height: auto;
    object-fit: contain;
}

@keyframes orbit-item {
    from {
        transform: rotate(var(--orbit-angle)) translateX(var(--orbit-radius)) rotate(calc(var(--orbit-angle) * -1));
    }
    to {
        transform: rotate(calc(var(--orbit-angle) + 360deg)) translateX(var(--orbit-radius)) rotate(calc((var(--orbit-angle) + 360deg) * -1));
    }
}

/* ============================================
   SECTION HEADERS
   ============================================ */

.section-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 0.5rem;
}

.section-header__icon {
    color: var(--accent-primary);
    display: flex;
    align-items: center;
    justify-content: center;
}

.section-header__title {
    font-size: 1.5rem;
    font-weight: 700;
    white-space: nowrap;
    color: var(--text-primary);
}

.section-header__line {
    flex: 1;
    height: 1px;
    background: var(--border-primary);
}

/* ============================================
   TECH STACK
   ============================================ */

/* .tech-stack {
    padding: 4rem 2rem;
} */

.tech-stack__container {
    max-width: var(--container-width);
    margin: 0 auto;
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
}

.tech-stack__subtitle {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-bottom: 2rem;
}

.tech-stack__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.tech-stack__category {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--accent-primary);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
}

.tech-stack__category-icon {
    display: flex;
    align-items: center;
}

.tech-stack__items {
    display: flex;
    flex-wrap: wrap;
    gap: 0.375rem;
}

.tech-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.375rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-sm);
    padding: 0.5rem 0.625rem;
    min-width: 72px;
    transition: border-color var(--transition-default), color var(--transition-default);
}

.tech-item:hover {
    border-color: var(--accent-dark);
}

.tech-item__icon {
    width: 32px;
    height: 32px;
    object-fit: contain;
    flex-shrink: 0;
}

.tech-item__name {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-align: center;
    line-height: 1.2;
    transition: color var(--transition-default);
}

.tech-item:hover .tech-item__name {
    color: var(--text-primary);
}

/* ============================================
   PROJECTS
   ============================================ */

.projects {
    padding: 3rem 2rem;
}

.projects__container {
    max-width: var(--container-width);
    margin: 0 auto;
}

.projects__subtitle {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-bottom: 2rem;
}

.projects__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    padding: 1.75rem;
    display: flex;
    flex-direction: column;
    transition: border-color var(--transition-default), transform var(--transition-default);
}

.project-card:hover {
    border-color: var(--accent-dark);
}

.project-card__content {
    display: flex;
    flex-direction: column;
    flex: 1;
}

.project-card__icon {
    color: var(--accent-primary);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
}

.project-card__title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.project-card__description {
    color: var(--text-muted);
    font-size: 0.875rem;
    line-height: 1.6;
    margin-bottom: 1.25rem;
    flex: 1;
}

.project-card__link {
    color: var(--accent-primary);
    font-size: 0.875rem;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    transition: color var(--transition-default);
}

.project-card__link:hover {
    color: var(--accent-hover);
}

/* ============================================
   DATA ENGINEERING HUB CTA
   ============================================ */

.hub-cta {
    padding: 2rem 2rem;
}

.hub-cta__container {
    max-width: var(--container-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 1.5rem;
    padding: 1.5rem 2rem;
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    transition: border-color var(--transition-default);
}

.hub-cta__container:hover {
    border-color: var(--accent-dark);
}

.hub-cta__icon {
    color: var(--accent-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.hub-cta__content {
    min-width: 0;
}

.hub-cta__title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
    line-height: 1.4;
}

.hub-cta__text {
    color: var(--text-muted);
    font-size: 0.875rem;
    line-height: 1.5;
}

.hub-cta__btn {
    flex-shrink: 0;
    white-space: nowrap;
}

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

.footer {
    border-top: 1px solid var(--border-primary);
    padding: 3rem 2rem 2rem;
    background: var(--bg-secondary);
}

.footer__container {
    max-width: var(--container-width);
    margin: 0 auto;
}

.footer__top {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 2rem;
    margin-bottom: 2.5rem;
}

.footer__brand {
    max-width: 320px;
}

.footer__name {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.footer__role {
    color: var(--accent-primary);
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.footer__tagline {
    color: var(--text-muted);
    font-size: 0.875rem;
    line-height: 1.6;
}

.footer__nav-title,
.footer__social-title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.footer__nav-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer__nav-link {
    color: var(--text-muted);
    font-size: 0.875rem;
    transition: color var(--transition-default);
}

.footer__nav-link:hover {
    color: var(--accent-primary);
}

.footer__social-list {
    display: flex;
    gap: 1rem;
}

.footer__social-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-primary);
    color: var(--text-secondary);
    transition: all var(--transition-default);
}

.footer__social-link:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

.footer__social-link:focus-visible {
    outline: 2px solid var(--accent-primary);
    outline-offset: 2px;
}

.footer__bottom {
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-primary);
    text-align: center;
}

.footer__copyright {
    color: var(--text-muted);
    font-size: 0.8rem;
}

/* ============================================
   RESPONSIVE — HUB CTA & FOOTER
   ============================================ */

@media (max-width: 1024px) {
    .hub-cta__container {
        grid-template-columns: auto 1fr;
        grid-template-areas:
            "icon content"
            "icon button";
        row-gap: 1rem;
    }

    .hub-cta__icon {
        grid-area: icon;
    }

    .hub-cta__content {
        grid-area: content;
    }

    .hub-cta__btn {
        grid-area: button;
        justify-self: end;
    }
}

@media (max-width: 768px) {
    .hub-cta {
        padding: 1.5rem 1rem;
    }

    .hub-cta__container {
        grid-template-columns: auto 1fr;
        grid-template-areas:
            "icon title"
            "icon text"
            "button button";
        padding: 1.25rem;
        gap: 0.75rem;
    }

    .hub-cta__title {
        font-size: 1rem;
    }

    .hub-cta__text {
        font-size: 0.8rem;
    }

    .hub-cta__btn {
        justify-self: stretch;
        width: 100%;
    }

    .footer {
        padding: 2rem 1rem 1.5rem;
    }

    .footer__top {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .footer__nav-list {
        align-items: center;
    }

    .footer__social-list {
        justify-content: center;
    }
}