:root {
    --primary-font: 'Lato', sans-serif;
    --code-font: 'Courier New', monospace;
    --text-color: #1a1a1a;
    --bg-color: #ffffff;
    --light-bg: #f4f4f4;
    --accent-color: #555555;
    --border-color: #e0e0e0;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
}

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

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

/* NAVIGATION */
nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    /* 1.2rem vertical padding: Optimized for 140px logo height */
    padding: 1.2rem var(--spacing-lg);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.98);
    border-bottom: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

/* LOGO STYLES */
.logo-svg-container {
    display: block;
    text-decoration: none;
    line-height: 0; 
    color: var(--text-color);
}

.elle-logo {
    /* OPTIMAL SIZE: 140px */
    max-width: 140px; 
    height: auto; 
    width: 100%;
    transition: opacity 0.3s;
}

.elle-logo:hover { opacity: 0.8; }

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    margin-left: 2rem;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 700;
    transition: color 0.2s;
}

.nav-links a:hover { color: #888; }
.hamburger { display: none; cursor: pointer; font-size: 1.5rem;}

/* HERO / HEADERS */
.hero, .page-header {
    /* EXACT CENTERING CALCULATION:
       Nav Height is approx 6.35rem.
       We want ~5rem of visual space above and below the content.
       Top Padding: 6.35rem (Nav) + 5.15rem (Space) = 11.5rem
       Bottom Padding: 5rem (Space)
       Result: The white box/title sits perfectly centered between the Nav and the next section. */
    padding: 11.5rem var(--spacing-lg) 5rem;
    
    min-height: 40vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
}

.page-header { background: var(--light-bg); }

h1 {
    font-size: 3.5rem;
    font-weight: 300;
    line-height: 1.1;
    text-transform: uppercase;
    margin-bottom: 1.5rem;
}

h2 {
    font-size: 2rem;
    font-weight: 300;
    margin-bottom: 1.5rem;
    text-transform: uppercase;
}

h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

p { max-width: 600px; margin-bottom: 1.5rem; color: #444; }

/* LAYOUT GRIDS */
.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    padding: 4rem var(--spacing-lg);
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    padding: 2rem var(--spacing-lg);
}

/* IMAGES & PLACEHOLDERS */
.img-placeholder {
    width: 100%;
    height: 400px;
    background-color: #ddd;
    display: flex;
    justify-content: center;
    align-items: center;
    color: #666;
    font-family: var(--code-font);
    font-size: 0.9rem;
    border: 1px dashed #999;
    text-transform: uppercase;
    overflow: hidden;
}
.img-placeholder img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-bg {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    z-index: -1;
}

/* TECH SPECS */
.tech-spec {
    font-family: var(--code-font);
    font-size: 0.8rem;
    border-top: 1px solid var(--border-color);
    padding-top: 0.5rem;
    margin-top: 1rem;
    color: #666;
}

/* BUTTONS */
.download-btn {
    display: inline-block;
    margin-top: 1rem;
    padding: 1rem 2rem;
    background-color: #1a1a1a;
    color: white;
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.8rem;
    transition: background 0.3s;
    border: none;
    cursor: pointer;
}
.download-btn:hover { background-color: #444; }

/* CONTACT FORM */
.contact-container {
    background-color: #fff;
    padding: 3rem;
    border: 1px solid #e0e0e0;
}
.form-group { margin-bottom: 1.5rem; }
.form-group label {
    display: block;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    margin-bottom: 0.5rem;
    letter-spacing: 1px;
    color: #555;
}
.form-group input, .form-group select, .form-group textarea {
    width: 100%;
    padding: 0.8rem;
    font-family: var(--primary-font);
    border: 1px solid #ccc;
    background: #fafafa;
    font-size: 0.9rem;
    transition: border 0.3s, background 0.3s;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    outline: none;
    border-color: #1a1a1a;
    background: #fff;
}
.submit-btn {
    width: 100%;
    padding: 1rem;
    background-color: #1a1a1a;
    color: white;
    border: none;
    text-transform: uppercase;
    font-weight: 700;
    letter-spacing: 2px;
    cursor: pointer;
    transition: background 0.3s;
}
.submit-btn:hover { background-color: #444; }

.contact-info-item { margin-bottom: 2rem; }
.contact-info-item h4 { font-size: 0.9rem; text-transform: uppercase; margin-bottom: 0.5rem; color: #1a1a1a; }
.contact-info-item p { font-size: 0.9rem; color: #666; margin-bottom: 0; }

/* UTILITIES */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease-out;
}
.reveal.active { opacity: 1; transform: translateY(0); }

/* FOOTER */
footer {
    background-color: #f4f4f4; 
    padding: 4rem var(--spacing-lg); 
    border-top: 1px solid #ddd; 
    font-size: 0.8rem; 
    color: #666;
}
footer a { color: #666; text-decoration: none; transition: color 0.2s; display:block; margin-bottom: 0.3rem;}
footer a:hover { color: #1a1a1a; text-decoration: underline; }

.footer-col-right {
    min-width: 160px; /* Forces alignment */
    text-align: left;
}

/* RESPONSIVE */
@media (max-width: 768px) {
    .nav-links { display: none; }
    .hamburger { display: block; }
    h1 { font-size: 2.5rem; }
    .grid-2, .grid-3 { grid-template-columns: 1fr; padding: 2rem 1.5rem; }
    
    /* Adjusted padding for mobile */
    nav, .hero, .page-header { padding-left: 1.5rem; padding-right: 1.5rem; }
    nav { padding-top: 1rem; padding-bottom: 1rem; }
    
    footer { padding: 3rem 1.5rem; }
    
    /* Mobile Logo Sizing */
    .elle-logo { max-width: 120px; }
}