/* OPTIM STUDIO - Computational Architecture Theme */

:root {
    --bg-color: #0a0a0a;
    --bg-alt: #111111;
    --text-primary: #ffffff;
    --text-secondary: #888888;
    --border-color: #222222;
    --accent: #ffffff;
    --font-main: 'Space Grotesk', sans-serif;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

html {
    scroll-behavior: smooth;
}

body.studio-theme {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-main);
    line-height: 1.5;
    overflow-x: hidden;
}

/* --- Navigation --- */
.nav-bar {
    position: fixed;
    top: 0;
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    z-index: 100;
    background: linear-gradient(to bottom, rgba(10,10,10,0.8) 0%, rgba(10,10,10,0) 100%);
    backdrop-filter: blur(5px);
}

.logo {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: 0.1em;
}

.logo-img {
    height: 24px;
    filter: invert(1);
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    color: var(--text-primary);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: var(--text-secondary);
}

/* --- Hero Section --- */
.hero {
    position: relative;
    height: 100vh;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 0;
    opacity: 0.6;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(0,0,0,0) 0%, rgba(10,10,10,0.8) 100%);
    z-index: 1;
}

.hero-title {
    position: relative;
    z-index: 2;
    font-size: 18vw;
    font-weight: 700;
    letter-spacing: -0.05em;
    line-height: 1;
    mix-blend-mode: overlay;
    color: #ffffff;
    user-select: none;
}

/* --- Manifesto Section --- */
.manifesto-section {
    padding: 10vw 5vw;
    background-color: var(--bg-color);
}

.manifesto-text {
    font-size: 4vw;
    font-weight: 500;
    line-height: 1.1;
    letter-spacing: -0.02em;
    text-transform: uppercase;
    max-width: 90vw;
}

/* --- Capabilities Section --- */
.capabilities-section {
    padding: 0 5vw 10vw 5vw;
}

.cap-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    border-top: 1px solid var(--border-color);
    border-left: 1px solid var(--border-color);
}

.cap-item {
    padding: 4rem 3rem;
    border-right: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    transition: background-color 0.3s ease;
}

.cap-item:hover {
    background-color: var(--bg-alt);
}

.cap-item h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 2rem;
    letter-spacing: 0.05em;
}

.cap-item p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

/* --- Projects Section (BIG style grid) --- */
.projects-section {
    width: 100%;
}

.project-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
}

.project-card {
    position: relative;
    aspect-ratio: 1 / 1;
    overflow: hidden;
    cursor: pointer;
}

.project-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    filter: grayscale(20%);
}

.project-card:hover img {
    transform: scale(1.05);
    filter: grayscale(0%);
}

.project-info {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(10, 10, 10, 0.85);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: opacity 0.4s ease;
    padding: 2rem;
    text-align: center;
}

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

.project-info h3 {
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    margin-bottom: 0.5rem;
}

.project-info span {
    font-size: 0.9rem;
    color: var(--text-secondary);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

/* --- Footer --- */
.footer-section {
    padding: 10vw 5vw 3vw 5vw;
    background-color: var(--bg-alt);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.footer-content {
    text-align: center;
    margin-bottom: 8vw;
}

.footer-title {
    font-size: 5vw;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 3rem;
}

.btn-solid {
    background-color: var(--text-primary);
    color: var(--bg-color);
    border: none;
    padding: 1.25rem 3rem;
    font-family: var(--font-main);
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    cursor: pointer;
    transition: transform 0.3s ease, background-color 0.3s ease;
}

.btn-solid:hover {
    transform: translateY(-2px);
    background-color: #e0e0e0;
}

.footer-bottom {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--border-color);
    padding-top: 2rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
    letter-spacing: 0.05em;
}

/* --- Animations --- */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 1s cubic-bezier(0.16, 1, 0.3, 1), transform 1s cubic-bezier(0.16, 1, 0.3, 1);
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* --- Responsive --- */
@media (max-width: 1024px) {
    .cap-grid { grid-template-columns: 1fr; }
    .project-grid { grid-template-columns: repeat(2, 1fr); }
    .manifesto-text { font-size: 5vw; }
}

@media (max-width: 768px) {
    .nav-links { display: none; }
    .project-grid { grid-template-columns: 1fr; }
    .manifesto-text { font-size: 7vw; }
    .hero-title { font-size: 22vw; }
    .footer-title { font-size: 8vw; }
    .cap-item { padding: 3rem 2rem; }
}