:root {
    /* Colors - Light Mode (Default) */
    --bg-color: #F5F5F5;
    --bg-alt: #EAEAEA;
    --text-main: #222222;
    --text-muted: #666666;
    --accent: #C06C4D;
    --accent-hover: #A5583B;
    --border-color: #E0E0E0;
    --card-bg: #FFFFFF;
    --overlay-color: rgba(0,0,0,0.4);
    
    /* Layout */
    --container-width: 1200px;
    --header-height: 80px;
    --border-radius: 4px; /* Minimalist/Sharp */
    --transition-speed: 0.3s;
}

/* Dark Mode Variables */
body.dark-mode {
    --bg-color: #1E2024;
    --bg-alt: #2C2E33;
    --text-main: #E0E0E0;
    --text-muted: #A0A0A0;
    --accent: #C06C4D; /* Same accent pops well on dark */
    --border-color: #33363B;
    --card-bg: #25282D;
    --overlay-color: rgba(0,0,0,0.6);
}

/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Manrope', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.6;
    transition: background-color var(--transition-speed), color var(--transition-speed);
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-speed);
}

ul {
    list-style: none;
}

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

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}

.btn {
    display: inline-block;
    padding: 12px 28px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.9rem;
    border: none;
    cursor: pointer;
    transition: all var(--transition-speed);
    border-radius: 2px;
}

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

.primary-btn:hover {
    background-color: var(--accent-hover);
    transform: translateY(-2px);
}

/* Section Common */
.section {
    padding: 100px 0;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 300;
    margin-bottom: 50px;
    line-height: 1.2;
}

.section-title .highlight {
    font-weight: 600;
    color: var(--accent);
}

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

/* Header */
#main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background-color: rgba(var(--bg-color-rgb), 0.95); /* We need rgb var for this, fallback to solid for now */
    background-color: var(--bg-color); /* Fallback */
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    transition: background-color var(--transition-speed);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: -0.5px;
    text-transform: uppercase;
}

#main-nav {
    display: none; /* Mobile first logic, override later */
}

/* Header Actions */
.header-actions {
    display: flex;
    align-items: center;
    gap: 15px;
}

#theme-toggle {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-main);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 5px;
}

body.light-mode .icon-moon { display: block; }
body.light-mode .icon-sun { display: none; }
body.dark-mode .icon-moon { display: none; }
body.dark-mode .icon-sun { display: block; }

#mobile-menu-btn {
    background: none;
    border: none;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 20px;
}

#mobile-menu-btn span {
    display: block;
    height: 2px;
    width: 100%;
    background-color: var(--text-main);
}

/* Desktop Nav */
@media (min-width: 768px) {
    #main-nav {
        display: block;
    }
    
    #main-nav ul {
        display: flex;
        gap: 30px;
    }
    
    .nav-link {
        font-size: 0.95rem;
        font-weight: 500;
        position: relative;
    }
    
    .nav-link::after {
        content: '';
        position: absolute;
        bottom: -5px;
        left: 0;
        width: 0;
        height: 2px;
        background-color: var(--accent);
        transition: width var(--transition-speed);
    }
    
    .nav-link:hover::after,
    .nav-link.active::after {
        width: 100%;
    }
    
    #mobile-menu-btn {
        display: none;
    }
}

/* Mobile Menu Overlay */
#mobile-menu-overlay {
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: 100%;
    height: calc(100vh - var(--header-height));
    background-color: var(--bg-color);
    z-index: 999;
    transform: translateX(100%);
    transition: transform var(--transition-speed);
    display: flex;
    align-items: center;
    justify-content: center;
}

#mobile-menu-overlay.open {
    transform: translateX(0);
}

#mobile-menu-overlay nav ul {
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.mobile-nav-link {
    font-size: 1.5rem;
    font-weight: 600;
}

/* Hero Section */
.hero-section {
    height: 100vh;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: #fff;
    margin-top: 0; /* Override common section margin if set */
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    z-index: -2;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.3);
    z-index: -1;
}

.hero-content h1 {
    font-size: 3rem;
    font-weight: 700;
    letter-spacing: 2px;
    margin-bottom: 20px;
    text-transform: uppercase;
}

.hero-content .subtitle {
    font-size: 1.2rem;
    margin-bottom: 40px;
    font-weight: 300;
}

@media (min-width: 768px) {
    .hero-content h1 {
        font-size: 5rem;
    }
    .hero-content .subtitle {
        font-size: 1.5rem;
    }
}

/* Intro Section */
.intro-section {
    padding: 80px 0;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.intro-text {
    font-size: 1.2rem;
    font-weight: 300;
    line-height: 1.8;
}

@media (min-width: 768px) {
    .intro-text {
        font-size: 1.5rem;
    }
}

/* Portfolio Section */
.portfolio-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 40px;
    justify-content: flex-start;
}

.filter-btn {
    background: none;
    border: 1px solid var(--border-color);
    padding: 8px 16px;
    border-radius: 20px;
    cursor: pointer;
    font-family: inherit;
    color: var(--text-muted);
    transition: all 0.2s;
}

.filter-btn.active, .filter-btn:hover {
    background-color: var(--text-main);
    color: var(--bg-color);
    border-color: var(--text-main);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.portfolio-item {
    position: relative;
    overflow: hidden;
    aspect-ratio: 4/3;
    border-radius: var(--border-radius);
    background-color: var(--bg-alt);
}

.portfolio-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s;
}

.portfolio-item:hover img {
    transform: scale(1.05);
}

.item-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 20px;
    background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
    color: #fff;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.3s;
}

.portfolio-item:hover .item-overlay {
    opacity: 1;
    transform: translateY(0);
}

/* Collections */
.collections-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
}

@media (min-width: 768px) {
    .collections-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.collection-card {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: transform 0.3s;
}

.collection-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
}

.card-image {
    aspect-ratio: 16/9;
    overflow: hidden;
    background-color: #f0f0f0;
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.card-content {
    padding: 30px;
}

.card-content h3 {
    margin-bottom: 15px;
    font-size: 1.5rem;
}

.card-content p {
    color: var(--text-muted);
    margin-bottom: 20px;
}

.specs {
    font-size: 0.9rem;
    color: var(--text-main);
    border-top: 1px solid var(--border-color);
    padding-top: 15px;
}

.specs li {
    margin-bottom: 5px;
}

/* Studio */
.studio-container {
    display: grid;
    gap: 40px;
}

@media (min-width: 768px) {
    .studio-container {
        grid-template-columns: 1fr 1fr;
        align-items: center;
    }
}

.studio-image {
    border-radius: var(--border-radius);
    overflow: hidden;
    height: 400px;
}

.studio-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.philosophy-text p {
    margin-bottom: 20px;
    color: var(--text-muted);
}

.philosophy-text strong {
    color: var(--text-main);
    display: block;
    margin-bottom: 5px;
    font-size: 1.1rem;
}

/* Contact */
.contact-wrapper {
    display: grid;
    gap: 50px;
}

@media (min-width: 768px) {
    .contact-wrapper {
        grid-template-columns: 1fr 1fr;
    }
}

.detail-item {
    margin-bottom: 30px;
}

.detail-item h4 {
    text-transform: uppercase;
    font-size: 0.8rem;
    letter-spacing: 1px;
    margin-bottom: 10px;
    color: var(--accent);
}

/* Form */
.cyber-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 0.9rem;
    font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 12px;
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    font-family: inherit;
    border-radius: 4px;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
}

/* Footer */
#main-footer {
    background-color: var(--bg-alt);
    padding: 80px 0 30px;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: flex;
    flex-direction: column;
    gap: 40px;
    margin-bottom: 60px;
}

@media (min-width: 768px) {
    .footer-content {
        flex-direction: row;
        justify-content: space-between;
    }
}

.footer-brand .logo-text {
    display: block;
    margin-bottom: 10px;
}

.footer-brand .motto {
    color: var(--text-muted);
}

.footer-links {
    display: flex;
    gap: 60px;
}

.link-group h4 {
    margin-bottom: 20px;
    font-size: 0.9rem;
    text-transform: uppercase;
}

.link-group ul li {
    margin-bottom: 10px;
}

.link-group a {
    color: var(--text-muted);
}

.link-group a:hover {
    color: var(--accent);
}

.footer-bottom {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.8rem;
    border-top: 1px solid var(--border-color);
    padding-top: 30px;
}