/* =========================================
   CHIDRA Photography — Minimalist Art Gallery Style
   Inspired by classic photography portfolios (e.g. Alexey Titarenko)
   ========================================= */

/* --- CSS Variables / Design Tokens --- */
:root {
    /* Colors - Pure Minimalist Palette */
    --bg-primary: #ffffff;
    --bg-secondary: #fdfdfd;
    --bg-sidebar: #ffffff;
    --bg-card: #ffffff;
    --bg-overlay: rgba(255, 255, 255, 0.95);

    /* Text */
    --text-primary: #111111;
    --text-secondary: #555555;
    --text-muted: #888888;
    --accent: #000000;

    /* Borders */
    --border-subtle: rgba(0, 0, 0, 0.05);
    --border-strong: rgba(0, 0, 0, 0.1);

    /* Sizing */
    --sidebar-width: 260px;

    /* Typography */
    --font-main: 'Montserrat', 'Helvetica Neue', Helvetica, Arial, sans-serif;
    --font-display: 'Montserrat', Georgia, serif;

    /* Spacing */
    --gap-xs: 4px;
    --gap-sm: 8px;
    --gap-md: 16px;
    --gap-lg: 24px;
    --gap-xl: 40px;
    --gap-2xl: 80px;

    /* Transitions */
    --transition-fast: 0.3s ease;
    --transition-smooth: 0.5s ease;
}

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

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

body {
    font-family: var(--font-main);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-fast), opacity var(--transition-fast);
}

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

/* --- Scrollbar --- */
::-webkit-scrollbar {
    width: 4px;
}

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

::-webkit-scrollbar-thumb {
    background: #e0e0e0;
}

::-webkit-scrollbar-thumb:hover {
    background: #cccccc;
}

/* =====================
   SIDEBAR
   ===================== */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--bg-sidebar);
    display: flex;
    flex-direction: column;
    z-index: 100;
    padding: var(--gap-2xl) 0 var(--gap-xl) var(--gap-xl);
}

.sidebar-header {
    margin-bottom: var(--gap-xl);
}

.logo-text {
    font-family: var(--font-main);
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 0.25em;
    color: var(--text-primary);
    text-transform: uppercase;
    margin-bottom: var(--gap-xs);
}

.logo-img {
    max-width: 160px;
    max-height: 50px;
    object-fit: contain;
    margin-bottom: var(--gap-sm);
}

.tagline {
    font-size: 0.75rem;
    color: var(--text-muted);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    font-weight: 400;
}

/* Sidebar Navigation Structure */
.sidebar-nav {
    flex: 1;
}

.sidebar-nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

/* Base items formatting */
.sidebar-nav li {
    margin-bottom: 10px;
}

/* Lien de navigation */
.sidebar-nav .nav-link {
    display: inline-block;
    padding: 2px 0;
    font-family: var(--font-main);
    font-size: 0.75rem;
    font-weight: 400;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    position: relative;
    transition: opacity var(--transition-fast);
}

.sidebar-nav .nav-link:hover {
    opacity: 0.6;
}

/* Élément actif : texte en gras */
.sidebar-nav .nav-link.active {
    font-weight: 600;
}

/* Sous-menu : indenté */
.nav-link-sub {
    margin-left: 28px;
}

/* Têtes de section (Photo, Drone) */
.nav-heading {
    display: block;
    padding: 2px 0;
    font-family: var(--font-main);
    font-size: 0.75rem;
    font-weight: 400;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    cursor: pointer;
    transition: opacity var(--transition-fast);
}

.nav-heading:hover {
    opacity: 0.6;
}

/* Cacher l'icône décorative */
.nav-icon {
    display: none;
}

/* Sous-menu caché par défaut (accordéon) */
.nav-sublist {
    margin-left: 0;
    padding-left: 20px;
    border-left: none;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: max-height 0.4s ease, opacity 0.3s ease;
}

/* Sous-menu ouvert */
.nav-section.open .nav-sublist {
    max-height: 500px;
    opacity: 1;
    margin-top: 8px;
}

.nav-sublist li {
    margin-bottom: 8px;
}

/* Sidebar Footer */
.sidebar-footer {
    display: flex;
    flex-direction: column;
    gap: var(--gap-md);
    margin-top: auto;
}

.social-links {
    display: flex;
    gap: var(--gap-md);
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
}

.social-link:hover {
    color: var(--text-primary);
}

.social-link svg {
    width: 16px;
    height: 16px;
}

.copyright {
    font-size: 0.65rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.admin-link {
    font-size: 0.8rem;
    color: var(--text-muted);
    opacity: 0.3;
}

.admin-link:hover {
    opacity: 1;
    color: var(--text-primary);
}

/* =====================
   MOBILE HEADER
   ===================== */
.mobile-header {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 70px;
    background: rgba(255, 255, 255, 0.98);
    z-index: 200;
    align-items: center;
    justify-content: center;
    border-bottom: 1px solid var(--border-subtle);
}

.mobile-logo {
    font-family: var(--font-main);
    font-size: 0.85rem;
    letter-spacing: 0.25em;
    font-weight: 600;
    text-transform: uppercase;
}

.hamburger {
    position: absolute;
    left: var(--gap-lg);
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.hamburger span {
    display: block;
    width: 20px;
    height: 1px;
    background: var(--text-primary);
    transition: all var(--transition-fast);
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(4px, 4px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(3px, -3px);
}

.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(255, 255, 255, 0.9);
    z-index: 90;
    opacity: 0;
    transition: opacity var(--transition-smooth);
}

.sidebar-overlay.active {
    display: block;
    opacity: 1;
}

/* =====================
   MAIN CONTENT
   ===================== */
.main-content {
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    padding: var(--gap-2xl);
    max-width: 1400px;
}

/* =====================
   HERO SECTION
   ===================== */
.hero {
    margin-bottom: var(--gap-2xl);
    display: flex;
    align-items: center;
}

.hero-bg {
    display: none;
    /* Removed background images for hero to keep it clean */
}

.hero-content {
    max-width: 800px;
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3.5rem);
    font-weight: 400;
    line-height: 1.2;
    color: var(--text-primary);
    margin-bottom: var(--gap-md);
    opacity: 0;
    animation: fadeIn 1s 0.2s forwards;
}

.hero-subtitle {
    font-family: var(--font-main);
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 400;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: var(--gap-xl);
    opacity: 0;
    animation: fadeIn 1s 0.5s forwards;
}

.hero-cta {
    display: none;
    /* Hide heavy buttons */
}

/* =====================
   GALLERY SECTION
   ===================== */
.gallery-header {
    margin-bottom: var(--gap-xl);
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    border-bottom: 1px solid var(--border-subtle);
    padding-bottom: var(--gap-sm);
}

.section-title {
    font-family: var(--font-main);
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--text-primary);
}

.gallery-count {
    font-size: 0.75rem;
    color: var(--text-muted);
    letter-spacing: 0.05em;
}

/* Pure Image Grid */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--gap-xl);
}

.gallery-item {
    cursor: pointer;
    opacity: 0;
    animation: fadeIn 1s forwards;
}

.gallery-item-inner {
    position: relative;
    background: transparent;
    transition: opacity var(--transition-fast);
}

.gallery-item-inner img,
.gallery-item-inner video {
    width: 100%;
    height: auto;
    object-fit: contain;
    /* No border radius, no box shadow, pure image */
}

/* Hover Effect - Subtle fade */
.gallery-item:hover .gallery-item-inner img,
.gallery-item:hover .gallery-item-inner video {
    opacity: 0.85;
}

.gallery-item-overlay {
    margin-top: var(--gap-sm);
    text-align: center;
}

.gallery-item-overlay h3 {
    font-family: var(--font-main);
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-secondary);
    letter-spacing: 0.05em;
    text-transform: uppercase;
    opacity: 0;
    transform: translateY(5px);
    transition: all var(--transition-fast);
}

.gallery-item:hover .gallery-item-overlay h3 {
    opacity: 1;
    transform: translateY(0);
}

.item-category {
    display: none;
    /* Keep it clean */
}

/* Video Thumbnail */
.video-thumbnail {
    position: relative;
}

.play-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0);
    transition: background var(--transition-fast);
}

.gallery-item:hover .play-overlay {
    background: rgba(255, 255, 255, 0.2);
}

.play-overlay svg {
    width: 32px;
    height: 32px;
    fill: var(--text-primary);
    opacity: 0.7;
}

.empty-gallery {
    padding: var(--gap-2xl) 0;
    color: var(--text-muted);
    text-align: left;
    font-size: 0.85rem;
    letter-spacing: 0.05em;
}

.btn-upload {
    display: none;
    /* Hide in public view */
}

/* =====================
   ABOUT & CONTACT
   ===================== */
.about-section,
.contact-section {
    margin-top: var(--gap-2xl);
    padding-top: var(--gap-xl);
    border-top: 1px solid var(--border-subtle);
    max-width: 600px;
}

.about-text {
    font-family: var(--font-display);
    color: var(--text-secondary);
    font-size: 1.1rem;
    line-height: 1.8;
    margin-top: var(--gap-lg);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--gap-sm);
    margin-top: var(--gap-lg);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--gap-md);
    color: var(--text-secondary);
    font-size: 0.85rem;
    letter-spacing: 0.05em;
}

.contact-item:hover {
    color: var(--text-primary);
}

.contact-item svg {
    display: none;
    /* Remove icons for a cleaner look */
}

/* =====================
   ANIMATIONS
   ===================== */
@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

/* =====================
   RESPONSIVE
   ===================== */
@media (max-width: 1024px) {
    .gallery-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        gap: var(--gap-lg);
    }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        padding: var(--gap-2xl);
        width: 300px;
        transition: transform var(--transition-smooth);
        border-right: 1px solid var(--border-subtle);
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .mobile-header {
        display: flex;
    }

    .main-content {
        margin-left: 0;
        padding: 100px var(--gap-lg) var(--gap-2xl);
    }

    .gallery-grid {
        grid-template-columns: 1fr;
        gap: var(--gap-xl);
    }

    .hero-title {
        font-size: 1.8rem;
    }

    .gallery-item-overlay h3 {
        opacity: 1;
        /* Always show titles on mobile */
        transform: translateY(0);
    }
}