:root {
    /* Colors */
    --white: #ffffff;
    --black: #1b1c1b;
    --red: #e73e2a;
    --text-secondary: #888;
    --text-dark: #333;
    --gray-light: #e0e0e0;
    
    /* Typography */
    --font-main: 'Inter', sans-serif;
    
    /* Spacing */
    --padding-desktop: 2%;
    --padding-tablet: 2%;
    --padding-mobile: 5%;
    --gap-large: 60px;
    --gap-medium: 40px;
    --gap-small: 20px;
    
    /* Dimensions */
    --item-width: 200px;
    --item-height: 300px;
    
    /* Transitions */
    --transition-fast: 0.3s ease;
    --transition-medium: 0.4s ease;
    --transition-slow: 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

/* =========================================
   RESET & BASE STYLES
   ========================================= */

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

html {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    background-color: var(--white);
    color: var(--black);
    font-family: var(--font-main);
    line-height: 1.5;
    overflow-x: hidden;
}

img,
video {
    max-width: 100%;
    height: auto;
    display: block;
}

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

/* Selection styles */
::selection {
    background: var(--red);
    color: var(--white);
}

::-moz-selection {
    background: var(--red);
    color: var(--white);
}

/* =========================================
   ANIMATIONS
   ========================================= */

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

main {
    animation: fadeInUp 1s cubic-bezier(0.16, 1, 0.3, 1);
}

/* =========================================
   HEADER & NAVIGATION
   ========================================= */

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2%;
    position: sticky;
    top: 0;
    z-index: 100;
    color: var(--white);
    mix-blend-mode: difference;
    transition: mix-blend-mode var(--transition-fast);
}

/* Disable mix-blend-mode when menu is open */
header:has(nav.active) {
    mix-blend-mode: normal;
}

header:has(nav.active) .logo,
header:has(nav.active) .burger-menu span {
    color: var(--black);
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 500;
    font-size: 1rem;
    letter-spacing: -0.06em;
    z-index: 1001;
}

/* Desktop Navigation */
nav {
    display: flex;
    align-items: center;
    gap: 8rem;
}

nav a {
    font-size: 0.8rem;
    font-weight: 400;
    position: relative;
    display: inline-block;
    transition: color var(--transition-fast);
}

nav a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 1px;
    bottom: -2px;
    left: 0;
    background-color: currentColor;
    transition: width var(--transition-medium);
}

nav a:hover::after {
    width: 100%;
}

/* Burger Menu (Hidden on desktop) */
.burger-menu {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 28px;
    height: 20px;
    cursor: pointer;
    z-index: 1001;
    mix-blend-mode: difference;
    transition: mix-blend-mode var(--transition-fast);
}

.burger-menu.active {
    mix-blend-mode: normal;
}

.burger-menu span {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--white);
    transition: all var(--transition-medium);
    transform-origin: center;
}

/* =========================================
   PROJECT INTRO SECTION
   ========================================= */

.project-intro {
    padding: 1.5rem 2%;
}

.intro-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--gap-large);
}

.project-title {
    font-size: clamp(3.5rem, 8vw, 7rem);
    line-height: 0.9;
    font-weight: 500;
    margin: 0 0 var(--gap-medium) -5px;
    letter-spacing: -0.06em;
}

.lead {
    font-size: clamp(1.1rem, 2vw, 1.25rem);
    font-weight: 500;
    margin-bottom: 25px;
    line-height: 1.5;
}

.intro-text p {
    color: var(--text-dark);
    max-width: 100%;
    margin: 0 0 4rem 7.2rem;
    letter-spacing: -0.04em;
}

/* =========================================
   INFO CONTAINER
   ========================================= */

.info-container {
    padding: 1.5rem 2% 0;
}

.info {
    display: flex;
    justify-content: space-between;
    width: 100%;
    font-size: 0.8rem;
    font-weight: 400;
    list-style: none;
    color: var(--text-secondary);
    letter-spacing: -0.02em;
    flex-wrap: wrap;
    gap: 1rem;
}

.info li {
    flex: 0 1 auto;
}

/* =========================================
   GALLERY SECTIONS
   ========================================= */

.project-gallery,
.ma-galerie,
.ma-galerie4 {
    padding: 1.5rem 2%;
}

/* Common image styles */
.gallery-item img,
.gallery-item video,
.ma-galerie img,
.ma-galerie4 img {
    width: 100%;
    display: block;
    object-fit: contain;
    overflow: hidden;
}

.gallery-item figcaption {
    margin-top: 15px;
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-align: right;
}

.gallery-item.large {
    width: 100%;
}

/* 2 Column Gallery */
.ma-galerie {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.ma-galerie img {
    height: auto;
}

/* 4 Column Gallery */
.ma-galerie4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    padding-top: 0;
}

.ma-galerie4 img {
    height: auto;
}

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

footer {
    width: 100%;
    padding: 70px var(--padding-desktop) 20px;
    background-color: var(--white);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.copyright {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--black);
}

.footer-links {
    display: flex;
    gap: 8rem;
}

.footer-links a {
    font-size: 0.8rem;
    font-weight: 400;
    position: relative;
    display: inline-block;
    transition: color var(--transition-fast);
}

.footer-links a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 1px;
    bottom: -2px;
    left: 0;
    background-color: currentColor;
    transition: width var(--transition-medium);
}

.footer-links a:hover::after {
    width: 100%;
}

/* =========================================
   RESPONSIVE DESIGN
   ========================================= */

/* ----------------------------------------
   TABLET & SMALL LAPTOPS (≤ 1024px)
   ---------------------------------------- */
@media (max-width: 1024px) {
    :root {
        --gap-large: 40px;
        --gap-medium: 30px;
    }
    
    /* All elements keep 2% padding on tablet */
    
    /* Navigation spacing */
    nav {
        gap: 2rem;
    }
    
    .footer-links {
        gap: 2rem;
    }
    
    /* Intro text adjustment */
    .intro-text p {
        margin-left: 4rem;
    }
    
    /* Gallery 4 columns to 2 */
    .ma-galerie4 {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ----------------------------------------
   TABLET PORTRAIT (≤ 768px)
   ---------------------------------------- */
@media (max-width: 768px) {
    :root {
        --gap-large: 30px;
        --gap-medium: 20px;
    }
    
    /* Mobile uses 5% padding for better readability */
    header,
    .project-intro,
    .info-container,
    .project-gallery,
    .ma-galerie,
    .ma-galerie4,
    footer {
        padding-left: 5%;
        padding-right: 5%;
    }
    
    /* ===== HEADER & NAVIGATION ===== */
    
    /* Show burger menu */
    .burger-menu {
        display: flex;
    }
    
    /* Mobile navigation overlay */
    nav {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100vh;
        background-color: transparent;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 3rem;
        visibility: hidden;
        pointer-events: none;
        transition: background-color var(--transition-medium), 
                    visibility var(--transition-medium);
        z-index: 900;
    }
    
    nav.active {
        visibility: visible;
        pointer-events: all;
        background-color: #ffffff !important;
    }
    
    /* Mobile nav links */
    nav a {
        font-size: clamp(2rem, 6vw, 3rem);
        font-weight: 600;
        color: var(--black);
        letter-spacing: -0.04em;
        transform: translateY(30px);
        opacity: 0;
        transition: transform var(--transition-slow),
                    opacity var(--transition-slow);
    }
    
    nav.active a {
        transform: translateY(0);
        opacity: 1;
    }
    
    /* Stagger animation for links */
    nav.active a:nth-child(1) { transition-delay: 0.1s; }
    nav.active a:nth-child(2) { transition-delay: 0.15s; }
    nav.active a:nth-child(3) { transition-delay: 0.2s; }
    nav.active a:nth-child(4) { transition-delay: 0.25s; }
    nav.active a:nth-child(5) { transition-delay: 0.3s; }
    
    /* Burger animation to X */
    .burger-menu.active span:nth-child(1) {
        transform: translateY(9px) rotate(45deg);
    }
    
    .burger-menu.active span:nth-child(2) {
        opacity: 0;
        transform: translateX(-20px);
    }
    
    .burger-menu.active span:nth-child(3) {
        transform: translateY(-9px) rotate(-45deg);
    }
    
    .burger-menu.active span {
        background-color: var(--black);
    }
    
    /* ===== PROJECT INTRO ===== */
    .project-intro {
        padding-top: 1rem;
    }
    
    .intro-grid {
        grid-template-columns: 1fr;
        gap: var(--gap-small);
        margin-top: 2rem;
    }
    
    .project-title {
        margin-left: 0;
        margin-bottom: var(--gap-small);
        line-height: 1;
    }
    
    .intro-text p {
        margin-left: 0;
        margin-bottom: 2rem;
        font-size: 1rem;
    }
    
    /* ===== INFO SECTION ===== */
    .info {
        flex-direction: column;
        gap: 0.75rem;
        font-size: 0.9rem;
    }
    
    /* ===== GALLERIES ===== */
    .ma-galerie,
    .ma-galerie4 {
        grid-template-columns: 1fr;
        gap: var(--gap-small);
    }
    
    .ma-galerie img,
    .ma-galerie4 img {
        height: auto;
    }
    
    /* ===== FOOTER ===== */
    footer {
        padding-top: 30px;
    }
    
    .footer-content {
        flex-direction: column;
        align-items: flex-start;
        gap: 2rem;
    }
    
    .footer-links {
        flex-direction: column;
        gap: 1rem;
    }
    
    .footer-links a {
        font-size: 0.9rem;
    }
}

/* ----------------------------------------
   MOBILE SMALL (≤ 480px)
   ---------------------------------------- */
@media (max-width: 480px) {
    header,
    .project-intro,
    .info-container,
    .project-gallery,
    .ma-galerie,
    .ma-galerie4,
    footer {
        padding-left: 5%;
        padding-right: 5%;
    }
    
    header {
        padding-top: 1rem;
        padding-bottom: 1rem;
    }
    
    .logo {
        font-size: 0.9rem;
    }
    
    .burger-menu {
        width: 24px;
        height: 18px;
    }
    
    nav {
        gap: 2.5rem;
    }
    
    nav a {
        font-size: 2rem;
    }
    
    .project-title {
        font-size: 2.5rem;
    }
    
    .lead {
        font-size: 1rem;
    }
    
    footer {
        padding-top: 25px;
    }
}

/* ----------------------------------------
   LARGE SCREENS (≥ 1440px)
   ---------------------------------------- */
@media (min-width: 1440px) {
    .intro-text p {
        margin-left: 10rem;
    }
}

/* ----------------------------------------
   EXTRA LARGE SCREENS (≥ 1920px)
   ---------------------------------------- */
@media (min-width: 1920px) {
    .intro-grid {
        gap: 80px;
    }
}

/* =========================================
   ACCESSIBILITY & MOTION
   ========================================= */

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus styles for keyboard navigation */
a:focus-visible,
button:focus-visible {
    outline: 2px solid var(--red);
    outline-offset: 4px;
}