/* ===================================
   CSS Variables & Reset
   =================================== */
:root {
    /* Colors - All black, no accents */
    --color-bg: #FFFFFF;
    --color-text: #000000;
    --color-border: #000000;
    
    /* Typography - Nimbus Sans only */
    --font-main: 'Nimbus Sans', 'Nimbus Sans L', 'Liberation Sans', Arial, sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-s: 1rem;
    --spacing-m: 2rem;
    --spacing-l: 4rem;
    --spacing-xl: 6rem;
    
    /* Layout - Equal split */
    --split-width: 50%;
    --image-width: 50%;
    --max-content-width: 500px;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-main);
    color: var(--color-text);
    background-color: var(--color-bg);
    line-height: 1.6;
    overflow-x: hidden;
    font-weight: 300;
}

/* ===================================
   Typography - Nimbus Sans Light
   =================================== */
h1, h2, h3, h4, p, a, span, div {
    font-family: var(--font-main);
    font-weight: 300;
    color: var(--color-text);
}

h1 {
    font-size: clamp(2rem, 4vw, 3rem);
    letter-spacing: -0.01em;
    line-height: 1.2;
}

h2 {
    font-size: clamp(1.5rem, 3vw, 2.25rem);
    letter-spacing: -0.01em;
    line-height: 1.3;
}

h3 {
    font-size: clamp(1rem, 2vw, 1.25rem);
    margin-bottom: var(--spacing-m);
    font-weight: 300;
}

p {
    font-size: clamp(0.9rem, 1.5vw, 1rem);
    line-height: 1.7;
    font-weight: 300;
}

a {
    color: var(--color-text);
    text-decoration: none;
    transition: opacity 0.3s ease;
}

a:hover {
    opacity: 0.6;
}

/* ===================================
   Floating Navigation - On top of images
   =================================== */
.floating-nav {
    position: fixed;
    top: var(--spacing-m);
    right: var(--spacing-m);
    display: flex;
    gap: var(--spacing-m);
    z-index: 1000;
    mix-blend-mode: difference;
}

.floating-nav a {
    font-size: 0.9rem;
    font-weight: 300;
    letter-spacing: 0.02em;
    color: #FFFFFF;
    position: relative;
}

.floating-nav a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1px;
    background: #FFFFFF;
    transition: width 0.3s ease;
}

.floating-nav a:hover::after {
    width: 100%;
}

.floating-nav a:hover {
    opacity: 1;
}

/* ===================================
   Split Screen Layout - More Vertical
   =================================== */
.split-screen {
    display: flex;
    min-height: 100vh;
}

.split-screen.reverse {
    flex-direction: row-reverse;
}

.left-panel {
    width: var(--split-width);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-l) var(--spacing-m);
    position: relative;
    z-index: 2;
    background: var(--color-bg);
}

.right-panel {
    width: var(--image-width);
    position: relative;
    overflow: hidden;
}

.content-wrapper {
    max-width: var(--max-content-width);
    width: 100%;
    animation: fadeInUp 0.8s ease-out;
    animation-fill-mode: both;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===================================
   Parallax Images
   =================================== */
.parallax-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.parallax-layer {
    position: absolute;
    top: -10%;
    left: -5%;
    width: 110%;
    height: 120%;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    transition: transform 0.1s ease-out;
    will-change: transform;
}

/* ===================================
   Hero Section
   =================================== */
.hero-section {
    margin-top: 0;
}

.hero-section .content-wrapper {
    text-align: center;
}

.hero-title {
    margin-bottom: var(--spacing-m);
    animation-delay: 0.2s;
}

.hero-subtitle {
    font-size: clamp(0.9rem, 1.5vw, 1rem);
    line-height: 1.7;
    margin-bottom: var(--spacing-l);
    animation-delay: 0.3s;
}

.hero-meta {
    margin-bottom: var(--spacing-l);
    animation-delay: 0.4s;
}

.hero-meta p {
    font-size: 0.9rem;
    margin-bottom: var(--spacing-xs);
}

/* ===================================
   Projects Section - No borders
   =================================== */
.project {
    opacity: 0;
    transform: translateY(50px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.project.visible {
    opacity: 1;
    transform: translateY(0);
}

.project-category {
    display: inline-block;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-s);
    font-weight: 300;
}

.project-title {
    margin-bottom: var(--spacing-m);
}

.project-meta {
    margin-bottom: var(--spacing-m);
}

.project-meta p {
    font-size: 0.85rem;
    margin-bottom: var(--spacing-xs);
}

.project-description {
    margin-bottom: var(--spacing-m);
}

.project-description p {
    margin-bottom: var(--spacing-m);
}

.project-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-m);
    margin-top: var(--spacing-l);
}

.stat {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-size: 1.5rem;
    font-weight: 300;
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: 0.85rem;
    line-height: 1.4;
}

.project-image {
    height: 100%;
}

/* Stagger animation delays */
.project:nth-child(1) { animation-delay: 0.1s; }
.project:nth-child(2) { animation-delay: 0.2s; }
.project:nth-child(3) { animation-delay: 0.3s; }
.project:nth-child(4) { animation-delay: 0.4s; }
.project:nth-child(5) { animation-delay: 0.5s; }

/* ===================================
   Footer
   =================================== */
.site-footer {
    background: var(--color-bg);
    color: var(--color-text);
    padding: var(--spacing-l) var(--spacing-m);
    border-top: 1px solid var(--color-border);
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.footer-content p {
    font-size: 0.85rem;
    margin-bottom: var(--spacing-xs);
}

/* ===================================
   Responsive Design
   =================================== */
@media (max-width: 1024px) {
    :root {
        --split-width: 100%;
        --image-width: 100%;
    }
    
    .split-screen {
        flex-direction: column;
        min-height: auto;
    }
    
    .split-screen.reverse {
        flex-direction: column;
    }
    
    .left-panel,
    .right-panel {
        width: 100%;
    }
    
    .right-panel {
        min-height: 60vh;
        order: -1;
    }
    
    .split-screen.reverse .right-panel {
        order: -1;
    }
    
    .floating-nav {
        top: var(--spacing-s);
        right: var(--spacing-s);
        gap: var(--spacing-s);
    }
    
    .footer-content {
        flex-direction: column;
        gap: var(--spacing-m);
    }
}

@media (max-width: 640px) {
    .left-panel {
        padding: var(--spacing-m);
    }
    
    .floating-nav {
        flex-wrap: wrap;
        max-width: 200px;
    }
    
    .floating-nav a {
        font-size: 0.85rem;
    }
    
    .project-stats {
        grid-template-columns: 1fr;
    }
}

/* ===================================
   Print Styles
   =================================== */
@media print {
    .floating-nav,
    .right-panel {
        display: none;
    }
    
    .split-screen {
        display: block;
    }
    
    .left-panel {
        width: 100%;
    }
}

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

a:focus-visible,
button:focus-visible {
    outline: 1px solid var(--color-text);
    outline-offset: 4px;
}

/* ===================================
   Custom Scrollbar (optional)
   =================================== */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--color-text);
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 0, 0, 0.7);
}