:root {
    --bg-base: #313338;
    --bg-surface: #2B2D31;
    --bg-surface-elevated: #1E1F22;
    --text-primary: #F2F3F5;
    --text-muted: #B5BAC1;
    --text-soft: #949BA4;
    --accent: #5865F2;
    --accent-hover: #4752C4;
    --border: rgba(255, 255, 255, 0.06);
    --shadow-lg: 0 24px 60px rgba(0, 0, 0, 0.5);
    --shadow-card: 0 4px 18px rgba(0, 0, 0, 0.25);
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --transition-fast: 160ms cubic-bezier(0.2, 0, 0.2, 1);
    --transition-med: 240ms cubic-bezier(0.2, 0, 0.2, 1);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-base);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
}

.container {
    width: 100%;
    max-width: 1180px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ---------- Header ---------- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background-color: rgba(30, 31, 34, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 18px;
    padding-bottom: 18px;
    gap: 16px;
    flex-wrap: wrap;
}

.brand-name {
    font-size: 1.05rem;
    font-weight: 700;
    letter-spacing: -0.01em;
}

.brand-role {
    font-size: 0.82rem;
    color: var(--text-soft);
    margin-top: 2px;
}

.contact-nav {
    display: flex;
    gap: 22px;
}

.contact-link {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color var(--transition-fast);
}

.contact-link:hover,
.contact-link:focus-visible {
    color: var(--accent);
    outline: none;
}

/* ---------- Hero ---------- */
.hero {
    padding: 110px 0 60px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: "";
    position: absolute;
    top: -200px;
    left: 50%;
    transform: translateX(-50%);
    width: 720px;
    height: 720px;
    background: radial-gradient(circle, rgba(88, 101, 242, 0.18) 0%, transparent 60%);
    pointer-events: none;
}

.hero-tag {
    color: var(--accent);
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    margin-bottom: 18px;
}

.hero-title {
    font-size: clamp(2.2rem, 5vw, 3.6rem);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.025em;
    margin-bottom: 22px;
    max-width: 780px;
}

.hero-subtitle {
    font-size: 1.08rem;
    color: var(--text-muted);
    max-width: 640px;
    margin-bottom: 32px;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.skill-tag {
    background-color: var(--bg-surface);
    color: var(--text-muted);
    padding: 7px 14px;
    border-radius: 999px;
    font-size: 0.82rem;
    font-weight: 500;
    border: 1px solid var(--border);
    transition: transform var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}

.skill-tag:hover {
    color: var(--accent);
    border-color: var(--accent);
    transform: translateY(-2px);
}

/* ---------- Projects section ---------- */
.projects-section {
    padding: 60px 0 100px;
}

.section-header {
    margin-bottom: 36px;
}

.section-title {
    font-size: 1.6rem;
    font-weight: 700;
    letter-spacing: -0.015em;
    margin-bottom: 6px;
}

.section-subtitle {
    color: var(--text-soft);
    font-size: 0.95rem;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 22px;
}

.project-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    cursor: pointer;
    text-align: left;
    color: inherit;
    font: inherit;
    width: 100%;
    transition: transform var(--transition-med), border-color var(--transition-med), background-color var(--transition-med), box-shadow var(--transition-med);
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-card);
    overflow: hidden;
}

.project-card-body {
    display: flex;
    flex-direction: column;
    gap: 14px;
    padding: 26px;
    flex-grow: 1;
}

.project-card:hover,
.project-card:focus-visible {
    transform: translateY(-4px) scale(1.01);
    border-color: var(--accent);
    background-color: #34373C;
    outline: none;
    box-shadow: 0 12px 32px rgba(88, 101, 242, 0.15);
}

.project-card-role {
    color: var(--accent);
    font-size: 0.78rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.project-card-title {
    font-size: 1.35rem;
    font-weight: 700;
    letter-spacing: -0.015em;
}

.project-card-desc {
    color: var(--text-muted);
    font-size: 0.95rem;
    flex-grow: 1;
}

.project-card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 4px;
}

.project-card-tag {
    background-color: var(--bg-surface-elevated);
    color: var(--text-soft);
    padding: 4px 10px;
    border-radius: 999px;
    font-size: 0.72rem;
    font-weight: 500;
}

/* ---------- Carousel (shared) ---------- */
.card-carousel,
.modal-carousel {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    background-color: var(--bg-surface-elevated);
    overflow: hidden;
}

.card-carousel-img,
.modal-carousel-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform var(--transition-med);
}

.project-card:hover .card-carousel-img {
    transform: scale(1.04);
}

.carousel-hidden {
    display: none !important;
}

.carousel-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 38px;
    height: 38px;
    border-radius: 50%;
    border: none;
    background-color: rgba(0, 0, 0, 0.55);
    color: var(--text-primary);
    font-size: 0.95rem;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    transition: opacity var(--transition-fast), background-color var(--transition-fast), transform var(--transition-fast);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

.project-card:hover .carousel-arrow,
.project-card:focus-within .carousel-arrow,
.modal-carousel .carousel-arrow {
    opacity: 1;
}

.carousel-arrow:hover,
.carousel-arrow:focus-visible {
    background-color: var(--accent);
    outline: none;
    transform: translateY(-50%) scale(1.08);
}

.carousel-arrow-prev {
    left: 10px;
}

.carousel-arrow-next {
    right: 10px;
}

.carousel-counter {
    position: absolute;
    bottom: 10px;
    right: 12px;
    background-color: rgba(0, 0, 0, 0.6);
    color: var(--text-primary);
    font-size: 0.72rem;
    font-weight: 600;
    padding: 3px 8px;
    border-radius: 999px;
    letter-spacing: 0.04em;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

/* ---------- Modal carousel ---------- */
.modal-carousel-slot:empty {
    display: none;
}

.modal-carousel {
    border-radius: var(--radius-md);
    margin-bottom: 12px;
}

.modal-carousel .carousel-arrow {
    width: 44px;
    height: 44px;
    font-size: 1.05rem;
}

.modal-carousel-caption {
    color: var(--text-soft);
    font-size: 0.85rem;
    text-align: center;
    margin-bottom: 24px;
    font-style: italic;
}

/* ---------- Footer ---------- */
.site-footer {
    border-top: 1px solid var(--border);
    padding: 28px 0;
    color: var(--text-soft);
    font-size: 0.85rem;
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 10px;
}

/* ---------- Modal ---------- */
.modal {
    position: fixed;
    inset: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-med), visibility var(--transition-med);
    padding: 24px;
}

.modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-backdrop {
    position: absolute;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.65);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

.modal-content {
    position: relative;
    background-color: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    max-width: 720px;
    width: 100%;
    max-height: 88vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    transform: scale(0.96);
    transition: transform var(--transition-med);
}

.modal.active .modal-content {
    transform: scale(1);
}

.modal-close {
    position: absolute;
    top: 14px;
    right: 14px;
    background: transparent;
    color: var(--text-muted);
    border: none;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 1.6rem;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

.modal-close:hover,
.modal-close:focus-visible {
    background-color: var(--bg-surface-elevated);
    color: var(--text-primary);
    outline: none;
}

.modal-body {
    padding: 40px 40px 36px;
}

.modal-role {
    color: var(--accent);
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    margin-bottom: 8px;
}

.modal-title {
    font-size: 1.9rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 16px;
}

.modal-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}

.modal-tags .project-card-tag {
    background-color: var(--bg-surface-elevated);
}

.modal-description {
    color: var(--text-muted);
    font-size: 1rem;
    margin-bottom: 28px;
}

.modal-section-title {
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--text-soft);
    margin-bottom: 14px;
}

.modal-highlights {
    list-style: none;
    margin-bottom: 28px;
}

.modal-highlights li {
    color: var(--text-muted);
    padding: 10px 0 10px 22px;
    position: relative;
    border-bottom: 1px solid var(--border);
    font-size: 0.95rem;
}

.modal-highlights li:last-child {
    border-bottom: none;
}

.modal-highlights li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 18px;
    width: 8px;
    height: 8px;
    background-color: var(--accent);
    border-radius: 50%;
}

.modal-links {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.modal-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 11px 20px;
    border-radius: var(--radius-md);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.modal-link-primary {
    background-color: var(--accent);
    color: #fff;
}

.modal-link-primary:hover {
    background-color: var(--accent-hover);
    transform: translateY(-1px);
}

.modal-link-secondary {
    background-color: var(--bg-surface-elevated);
    color: var(--text-primary);
}

.modal-link-secondary:hover {
    background-color: #2A2C30;
    transform: translateY(-1px);
}

/* ---------- Error / empty state ---------- */
.grid-message {
    grid-column: 1 / -1;
    text-align: center;
    color: var(--text-soft);
    padding: 60px 20px;
    background-color: var(--bg-surface);
    border-radius: var(--radius-lg);
    border: 1px dashed var(--border);
}

body.modal-open {
    overflow: hidden;
}

/* ---------- Responsive ---------- */
@media (max-width: 640px) {
    .hero {
        padding: 70px 0 40px;
    }

    .header-inner {
        flex-direction: column;
        align-items: flex-start;
    }

    .contact-nav {
        gap: 16px;
    }

    .modal-body {
        padding: 32px 24px 28px;
    }

    .modal-title {
        font-size: 1.5rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}