/* ============================================
   SHARED STYLES - Centered Header Version
   ============================================ */

:root {
    /* Colors */
    --color-black: #111;
    --color-dark: #333;
    --color-gray: #888;
    --color-light: #bbb;
    --color-lighter: #e5e5e5;
    --color-bg: #fafafa;
    --color-white: #fff;
    
    /* Typography */
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-display: 'Playfair Display', Georgia, serif;
    
    /* Font weights */
    --weight-light: 300;
    --weight-normal: 400;
    --weight-medium: 500;
    --weight-semibold: 600;
    
    /* Sizes */
    --header-height: auto;
    --spacing-page: clamp(24px, 5vw, 48px);
    
    /* Transitions */
    --transition-slow: 0.7s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-medium: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: 0.15s ease;
}

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

html { 
    font-size: 16px; 
    -webkit-font-smoothing: antialiased; 
    -moz-osx-font-smoothing: grayscale;
}

body { 
    font-family: var(--font-main); 
    font-weight: var(--weight-normal);
    color: var(--color-black); 
    background: var(--color-bg);
    line-height: 1.6;
}

a { color: inherit; text-decoration: none; }
button { background: none; border: none; cursor: pointer; font: inherit; color: inherit; }
img { max-width: 100%; height: auto; }

/* Layout */
.site-wrapper { 
    display: flex; 
    flex-direction: column; 
    min-height: 100vh;
    min-height: 100dvh;
}

.site-wrapper--fixed {
    height: 100vh;
    height: 100dvh;
    overflow: hidden;
}

/* ============================================
   HEADER - Centered Layout
   ============================================ */
.header { 
    flex-shrink: 0; 
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: clamp(24px, 4vw, 40px) var(--spacing-page);
    position: relative;
    z-index: 100;
    text-align: center;
}

.header--sticky {
    position: sticky;
    top: 0;
    background: var(--color-bg);
}

/* Navigation - Above title */
.nav { 
    display: flex; 
    align-items: center; 
    justify-content: center;
    gap: clamp(1.5rem, 4vw, 3rem);
    margin-bottom: clamp(12px, 2vw, 20px);
    order: -1; /* Nav comes before title */
}

.nav-link { 
    font-family: var(--font-main);
    font-size: 0.7rem;
    font-weight: var(--weight-medium);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-gray); 
    transition: color var(--transition-fast); 
}

.nav-link:hover { 
    color: var(--color-black); 
}

.nav-link.active { 
    color: var(--color-black); 
}

/* Site Title - Large, Classic, Centered */
.site-title { 
    font-family: var(--font-display);
    font-size: clamp(1.6rem, 4vw, 2.6rem);
    font-weight: var(--weight-normal);
    letter-spacing: 0.02em;
    line-height: 1.1;
}

.site-title a { 
    transition: opacity var(--transition-fast); 
}

.site-title a:hover { 
    opacity: 0.6; 
}

/* Tagline under title */
.site-tagline {
    font-family: var(--font-main);
    font-size: 0.6rem;
    font-weight: var(--weight-normal);
    letter-spacing: 0.4em;
    color: #999;
    margin-top: clamp(8px, 1.5vw, 14px);
    text-transform: lowercase;
}

/* ============================================
   TYPOGRAPHY HIERARCHY
   ============================================ */

/* Page titles - Large, classic */
.page-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: var(--weight-normal);
    letter-spacing: 0.01em;
    line-height: 1.2;
}

/* Section titles */
.section-title {
    font-family: var(--font-display);
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: var(--weight-normal);
    letter-spacing: 0.01em;
}

/* Subtitles */
.subtitle {
    font-family: var(--font-main);
    font-size: 0.85rem;
    font-weight: var(--weight-normal);
    color: var(--color-gray);
    letter-spacing: 0.01em;
}

/* Body text */
.body-text {
    font-family: var(--font-main);
    font-size: 0.95rem;
    font-weight: var(--weight-normal);
    line-height: 1.8;
    color: var(--color-dark);
}

/* Small/meta text */
.meta-text {
    font-family: var(--font-main);
    font-size: 0.7rem;
    font-weight: var(--weight-medium);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-gray);
}

/* ============================================
   ANIMATIONS
   ============================================ */
.fade-in {
    opacity: 0;
    animation: fadeIn 0.8s ease forwards;
}

.fade-in-up {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.8s ease forwards;
}

@keyframes fadeIn { 
    to { opacity: 1; } 
}

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

/* Staggered delays */
.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }
.delay-5 { animation-delay: 0.5s; }

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
    .header {
        padding: clamp(20px, 3vw, 30px) var(--spacing-page);
    }
    
    .nav { 
        gap: clamp(1rem, 3vw, 1.5rem);
        margin-bottom: 10px;
    }
    
    .nav-link { 
        font-size: 0.65rem;
        letter-spacing: 0.1em;
    }
    
    .site-title { 
        font-size: clamp(1.3rem, 5vw, 1.7rem);
    }
    
    .site-tagline {
        font-size: 0.5rem;
        letter-spacing: 0.25em;
    }
}

@media (max-width: 480px) {
    .nav { 
        gap: 0.8rem;
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .nav-link { 
        font-size: 0.6rem;
    }
    
    .site-title { 
        font-size: 1.2rem;
    }
    
    .site-tagline {
        font-size: 0.45rem;
        letter-spacing: 0.2em;
    }
}

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