/* ==========================================================================
   Reset & base
   ========================================================================== */

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

:root {
    --color-bg: #0d0d0d;
    --color-surface: #161616;
    --color-text: #f5f5f5;
    --color-text-muted: #8a8a8a;
    --color-border: #262626;
    --color-accent: #f5d400;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --max-width: 1400px;
    --gutter: clamp(1.5rem, 4vw, 4rem);
    --transition-fast: 0.25s ease;
    --transition-slow: 0.5s cubic-bezier(0.25, 0.1, 0.25, 1);
    color-scheme: dark;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

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

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

ul {
    list-style: none;
}

button {
    font-family: inherit;
    background: none;
    border: none;
    cursor: pointer;
    color: inherit;
}

main {
    display: block;
}

/* ==========================================================================
   Header / Navigation
   ========================================================================== */

.site-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.75rem var(--gutter);
    max-width: var(--max-width);
    margin: 0 auto;
    position: relative;
    z-index: 100;
}

.logo {
    display: flex;
    align-items: center;
    font-size: 0.95rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

.logo-mark {
    height: 34px;
    width: auto;
    border-radius: 6px;
    transition: opacity var(--transition-fast);
}

.logo:hover .logo-mark {
    opacity: 0.85;
}

.site-nav {
    display: flex;
    gap: 2.5rem;
}

.site-nav a {
    font-size: 0.8rem;
    font-weight: 500;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    position: relative;
    padding-bottom: 0.2rem;
}

.site-nav a::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    height: 1px;
    background: var(--color-accent);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform var(--transition-fast);
}

.site-nav a:hover,
.site-nav a.active {
    color: var(--color-accent);
}

.site-nav a:hover::after,
.site-nav a.active::after {
    transform: scaleX(1);
    transform-origin: left;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 32px;
    height: 32px;
    z-index: 110;
}

.nav-toggle span {
    display: block;
    width: 100%;
    height: 1px;
    background: var(--color-text);
    transition: transform var(--transition-fast), opacity var(--transition-fast);
}

/* ==========================================================================
   Hero
   ========================================================================== */

.hero {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: clamp(3rem, 10vh, 6rem) var(--gutter) clamp(3rem, 8vh, 5rem);
}

.eyebrow {
    font-size: 0.8rem;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-text-muted);
    margin-bottom: 1.25rem;
}

.hero h1 {
    font-size: clamp(1.9rem, 5vw, 3.4rem);
    font-weight: 600;
    line-height: 1.15;
    max-width: 18ch;
    letter-spacing: -0.01em;
}

.scroll-cue {
    display: inline-block;
    margin-top: 2.5rem;
    font-size: 0.8rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--color-text-muted);
    animation: nudge 2.2s ease-in-out infinite;
    transition: color var(--transition-fast);
}

.scroll-cue:hover {
    color: var(--color-accent);
}

@keyframes nudge {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(5px); }
}

/* ==========================================================================
   Portfolio / filter bar
   ========================================================================== */

.portfolio {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--gutter) clamp(4rem, 10vh, 7rem);
}

.filter-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 1.75rem;
    margin-bottom: clamp(2rem, 5vh, 3.5rem);
}

.filter-btn {
    font-size: 0.8rem;
    font-weight: 500;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--color-text-muted);
    padding: 0.25rem 0;
    position: relative;
    transition: color var(--transition-fast);
}

.filter-btn::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    height: 1px;
    background: var(--color-accent);
    transform: scaleX(0);
    transition: transform var(--transition-fast);
}

.filter-btn:hover {
    color: var(--color-accent);
}

.filter-btn.active {
    color: var(--color-accent);
}

.filter-btn.active::after {
    transform: scaleX(1);
}

/* ==========================================================================
   Project grid
   ========================================================================== */

.project-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: clamp(1.5rem, 3vw, 3rem) clamp(1.25rem, 2.5vw, 2.5rem);
}

.project {
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.project.is-hidden {
    display: none;
}

.project-link {
    display: block;
}

.project-image-wrap {
    overflow: hidden;
    background: var(--color-border);
    aspect-ratio: 16 / 9;
    position: relative;
}

.project-image-wrap::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0);
    transition: background var(--transition-slow);
}

.project-link:hover .project-image-wrap::after {
    background: rgba(255, 255, 255, 0.05);
}

.project-image-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.project-link:hover .project-image-wrap img {
    transform: scale(1.045);
}

.project-info {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-top: 0.9rem;
    opacity: 0.65;
    transition: opacity var(--transition-fast);
}

.project-link:hover .project-info {
    opacity: 1;
}

.project-meta h3 {
    font-size: 0.95rem;
    font-weight: 500;
    transition: color var(--transition-fast);
}

.project-link:hover .project-meta h3 {
    color: var(--color-accent);
}

.project-creator {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    margin-top: 0.2rem;
}

.project-category {
    font-size: 0.75rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--color-text-muted);
    white-space: nowrap;
    margin-left: 1.5rem;
}

.empty-state {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    text-align: center;
    padding: 3rem 0;
}

/* ==========================================================================
   Project modal (lightbox)
   ========================================================================== */

.modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.98);
    color: #f5f5f5;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-fast), visibility var(--transition-fast);
    z-index: 200;
    padding: var(--gutter);
}

.modal.is-open {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    max-width: min(1100px, 100%);
    max-height: 90vh;
    overflow-y: auto;
    text-align: center;
}

.modal-content img {
    max-width: 100%;
    max-height: 65vh;
    margin: 0 auto 1.75rem;
    object-fit: contain;
}

.modal-content h2 {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 0.4rem;
}

.modal-content #modalCreator {
    font-size: 0.9rem;
    color: rgba(245, 245, 245, 0.6);
    margin-bottom: 0.75rem;
}

.modal-content #modalCategory {
    font-size: 0.75rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: rgba(245, 245, 245, 0.6);
    margin-bottom: 1rem;
}

.modal-content #modalDescription {
    font-size: 0.9rem;
    color: rgba(245, 245, 245, 0.75);
    max-width: 55ch;
    margin: 0 auto;
}

.modal-close {
    position: absolute;
    top: 1.75rem;
    right: var(--gutter);
    font-size: 2rem;
    line-height: 1;
    color: #f5f5f5;
    opacity: 0.8;
    transition: opacity var(--transition-fast);
}

.modal-close:hover {
    opacity: 1;
    color: var(--color-accent);
}

.modal-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.6rem;
    color: #f5f5f5;
    opacity: 0.6;
    padding: 0.75rem;
    transition: opacity var(--transition-fast);
}

.modal-nav:hover {
    opacity: 1;
    color: var(--color-accent);
}

.modal-prev {
    left: clamp(0.5rem, 3vw, 2rem);
}

.modal-next {
    right: clamp(0.5rem, 3vw, 2rem);
}

/* ==========================================================================
   About / Contact pages
   ========================================================================== */

.page-intro,
.services,
.contact-hero {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: clamp(2rem, 6vh, 4rem) var(--gutter);
}

.page-intro h1,
.contact-hero h1 {
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.lead {
    font-size: 1.05rem;
    color: var(--color-text-muted);
    max-width: 60ch;
    line-height: 1.7;
}

.services {
    padding-top: 0;
}

.services h2 {
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-text-muted);
    margin-bottom: 1.5rem;
}

.services-list li {
    font-size: 1.15rem;
    padding: 1rem 0;
    border-top: 1px solid var(--color-border);
}

.services-list li:last-child {
    border-bottom: 1px solid var(--color-border);
}

.contact-hero {
    padding-top: clamp(4rem, 12vh, 7rem);
    padding-bottom: clamp(4rem, 12vh, 7rem);
}

.contact-email {
    display: inline-block;
    font-size: clamp(1.3rem, 3vw, 1.8rem);
    font-weight: 600;
    margin-top: 1.5rem;
    border-bottom: 1px solid var(--color-accent);
    padding-bottom: 0.15rem;
    transition: color var(--transition-fast);
}

.contact-email:hover {
    color: var(--color-accent);
}

.contact-social {
    display: flex;
    gap: 2rem;
    margin-top: 3rem;
}

.contact-social a {
    font-size: 0.8rem;
    font-weight: 500;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
}

.contact-social a:hover {
    color: var(--color-accent);
}

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 2.5rem var(--gutter) 3rem;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 0.75rem;
    font-size: 0.8rem;
    color: var(--color-text-muted);
    border-top: 1px solid var(--color-border);
}

.footer-links a {
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--color-accent);
}

.footer-links span {
    margin: 0 0.4rem;
}

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 900px) {
    .project-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .project-grid {
        grid-template-columns: 1fr;
    }

    .nav-toggle {
        display: flex;
    }

    .site-nav {
        position: fixed;
        inset: 0;
        top: 0;
        background: var(--color-bg);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 2rem;
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: transform var(--transition-slow), opacity var(--transition-slow), visibility var(--transition-slow);
    }

    .site-nav.is-open {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .site-nav a {
        font-size: 1.1rem;
    }

    body.nav-is-open {
        overflow: hidden;
    }

    .nav-toggle.is-open span:nth-child(1) {
        transform: translateY(6px) rotate(45deg);
    }

    .nav-toggle.is-open span:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.is-open span:nth-child(3) {
        transform: translateY(-6px) rotate(-45deg);
    }

    .modal-nav {
        font-size: 1.3rem;
        padding: 0.5rem;
    }

    .contact-social {
        flex-wrap: wrap;
    }
}