/* ==========================================================================
   Giancarlo Morieri Portfolio - Dark Editorial Theme
   Design: Black background, white text, elegant minimal.
   ========================================================================== */

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

:root {
    /* Dark color system */
    --color-bg: #0a0a0a;
    --color-bg-elevated: #141414;
    --color-bg-card: #1a1a1a;
    --color-fg: #ffffff;
    --color-fg-soft: #c8c8c8;
    --color-fg-muted: #6e6e6e;
    --color-border: #2a2a2a;
    --color-border-soft: #1f1f1f;
    --color-accent: #ffffff;
    --color-hover: #1f1f1f;
    --color-overlay: rgba(0, 0, 0, 0.85);
    
    /* Typography */
    --font-sans: 'Helvetica Neue', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-serif: 'Times New Roman', Georgia, serif;
    --font-mono: 'Courier New', monospace;
    
    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 4rem;
    --space-xl: 6rem;
    
    /* Layout */
    --container-max: 1600px;
    --container-pad: clamp(1rem, 4vw, 3rem);
    
    /* Transitions */
    --transition-fast: 150ms ease-out;
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Elevation */
    --shadow-card: 0 0 0 1px var(--color-border-soft);
    --shadow-card-hover: 0 12px 32px rgba(0, 0, 0, 0.6), 0 0 0 1px var(--color-border);
}

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

body {
    font-family: var(--font-sans);
    color: var(--color-fg);
    background: var(--color-bg);
    line-height: 1.5;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
}

/* ---------- Initial Page Loader ---------- */
.page-loader {
    position: fixed;
    inset: 0;
    background: var(--color-bg);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 600ms ease-out, visibility 600ms ease-out;
}

.page-loader.loaded {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.page-loader .loader-text {
    font-size: 0.875rem;
    font-weight: 700;
    letter-spacing: 0.3em;
    color: var(--color-fg);
    text-transform: uppercase;
    animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-pad);
    width: 100%;
}

/* ---------- Header / Navigation ---------- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(10, 10, 10, 0.85);
    border-bottom: 1px solid var(--color-border);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--space-sm);
    padding-bottom: var(--space-sm);
    gap: var(--space-md);
    flex-wrap: wrap;
}

.logo {
    font-size: 0.875rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    color: var(--color-fg);
    text-decoration: none;
    text-transform: uppercase;
    transition: opacity var(--transition-fast);
}

.logo:hover {
    opacity: 0.6;
}

.main-nav {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.nav-link {
    font-size: 0.7rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-fg-muted);
    text-decoration: none;
    padding: 0.3rem 0;
    border-bottom: 1px solid transparent;
    transition: color var(--transition-fast), border-color var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-fg);
    border-bottom-color: var(--color-fg);
}

/* ---------- Main Content ---------- */
.page-content {
    flex: 1;
    padding-top: var(--space-lg);
    padding-bottom: var(--space-xl);
}

.page-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 300;
    line-height: 1.1;
    margin-bottom: var(--space-md);
    letter-spacing: -0.02em;
    color: var(--color-fg);
}

.page-role {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.3em;
    color: var(--color-fg-muted);
    margin-bottom: var(--space-md);
    font-style: italic;
}

.content-body {
    margin-top: var(--space-md);
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 4px;
    align-items: stretch;
}

/* ---------- Gallery Card (the clickable tile) ---------- */
.content-body > a {
    display: block;
    text-decoration: none;
    color: inherit;
    position: relative;
    overflow: hidden;
    background: var(--color-bg-card);
    aspect-ratio: 16 / 9;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
    opacity: 0;
    transform: translateY(20px);
}

.content-body > a.is-visible {
    opacity: 1;
    transform: translateY(0);
}

.content-body > a:hover {
    z-index: 2;
    box-shadow: var(--shadow-card-hover);
}

.content-body > a:hover img {
    transform: scale(1.05);
    filter: brightness(1.1);
}

.content-body > a img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform var(--transition-slow), filter var(--transition-base);
    background: var(--color-bg-elevated);
}

.content-body > a h3,
.content-body > a h4,
.content-body > a h5 {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--space-sm) var(--space-sm) calc(var(--space-sm) + 0.5rem);
    margin: 0;
    background: linear-gradient(to top, var(--color-overlay) 0%, rgba(0, 0, 0, 0.5) 50%, rgba(0, 0, 0, 0) 100%);
    color: white;
    font-size: 0.7rem;
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    text-align: left;
}

.content-body > a p {
    display: none;
}

/* Standalone image inside content (not in a card) */
.content-body > img {
    grid-column: 1 / -1;
    max-width: 100%;
    height: auto;
    margin: var(--space-sm) 0;
    display: block;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity var(--transition-base), transform var(--transition-base);
}

.content-body > img.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* Iframe videos (YouTube/Vimeo) - responsive */
.content-body > iframe,
.content-body iframe {
    grid-column: 1 / -1;
    width: 100%;
    aspect-ratio: 16 / 9;
    border: 0;
    margin: var(--space-sm) 0;
    display: block;
    background: var(--color-bg-elevated);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.content-body > iframe.is-visible,
.content-body iframe.is-visible {
    opacity: 1;
}

/* Headings inside content (project credits, etc.) */
.content-body > h2,
.content-body > h3:not(.content-body > a h3) {
    grid-column: 1 / -1;
    font-size: 1rem;
    font-weight: 400;
    margin: var(--space-md) 0 var(--space-sm);
    letter-spacing: -0.01em;
    color: var(--color-fg-soft);
    line-height: 1.6;
}

.content-body > p,
.content-body > div > p {
    grid-column: 1 / -1;
    margin: var(--space-sm) 0;
    color: var(--color-fg-soft);
    font-size: 0.875rem;
    line-height: 1.8;
}

.content-body > a:not(:has(img)):not(:has(iframe)) {
    grid-column: 1 / -1;
    padding: var(--space-sm) 0;
    color: var(--color-fg);
    text-decoration: underline;
    text-underline-offset: 4px;
    text-decoration-thickness: 1px;
    transition: opacity var(--transition-fast);
}

.content-body > a:not(:has(img)):not(:has(iframe)):hover {
    opacity: 0.6;
}

.content-body > h2:first-child {
    font-size: 1.25rem;
    margin-top: 0;
    color: var(--color-fg);
}

/* ---------- Footer ---------- */
.site-footer {
    border-top: 1px solid var(--color-border);
    padding: var(--space-md) 0;
    margin-top: var(--space-xl);
    background: var(--color-bg);
}

.site-footer p {
    font-size: 0.65rem;
    color: var(--color-fg-muted);
    text-align: center;
    letter-spacing: 0.15em;
    text-transform: uppercase;
}

/* ---------- Back to top button ---------- */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 44px;
    height: 44px;
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    color: var(--color-fg);
    text-decoration: none;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), visibility var(--transition-base), background var(--transition-fast);
    z-index: 50;
    font-size: 1.2rem;
    line-height: 1;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--color-bg-card);
}

.back-to-top::before {
    content: "↑";
}

/* ---------- 404 Page ---------- */
.page-content .container p {
    margin: var(--space-sm) 0;
    color: var(--color-fg-soft);
}

.page-content .container a {
    color: var(--color-fg);
    text-decoration: underline;
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
    .site-header .container {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-xs);
    }
    
    .main-nav {
        width: 100%;
        overflow-x: auto;
        flex-wrap: nowrap;
        gap: var(--space-sm);
        padding-bottom: 0.5rem;
        -webkit-overflow-scrolling: touch;
    }
    
    .nav-link {
        white-space: nowrap;
    }
    
    .content-body {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    }
    
    .page-content {
        padding-top: var(--space-sm);
        padding-bottom: var(--space-lg);
    }
    
    .back-to-top {
        bottom: 1rem;
        right: 1rem;
        width: 40px;
        height: 40px;
    }
}

@media (max-width: 480px) {
    .content-body {
        grid-template-columns: 1fr;
    }
}

/* ---------- Print ---------- */
@media print {
    .site-header, .site-footer, .main-nav, .back-to-top, .page-loader {
        display: none !important;
    }
    
    body {
        color: black;
        background: white;
    }
    
    .content-body > a {
        opacity: 1 !important;
        transform: none !important;
    }
}

/* ---------- Image loading shimmer ---------- */
img {
    background: linear-gradient(110deg, var(--color-bg-elevated) 30%, var(--color-bg-card) 50%, var(--color-bg-elevated) 70%);
    background-size: 200% 100%;
    animation: shimmer 1.5s linear infinite;
}

img.loaded, img[src] {
    animation: none;
    background: var(--color-bg-elevated);
}

@keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ---------- 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;
    }
    
    .content-body > a,
    .content-body > img {
        opacity: 1 !important;
        transform: none !important;
    }
}

:focus-visible {
    outline: 2px solid var(--color-fg);
    outline-offset: 2px;
}

/* ---------- Selection ---------- */
::selection {
    background: var(--color-fg);
    color: var(--color-bg);
}

/* ---------- Scrollbar (dark) ---------- */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border: 2px solid var(--color-bg);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-fg-muted);
}