/* 
   TeraMax Server Photo Gallery
   Premium CSS Stylesheet
*/

/* --- Custom Variables & Theme Palettes --- */
:root {
    /* Fonts */
    --font-ar: 'Cairo', sans-serif;
    --font-en: 'Outfit', sans-serif;
    
    /* Layout transition speed */
    --transition-speed: 0.3s;
    --transition-smooth: cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Dark Theme Default Bases */
    --bg-main: #0b0b0e;
    --bg-card: rgba(20, 20, 27, 0.7);
    --bg-header: rgba(13, 13, 18, 0.75);
    --bg-footer: #08080a;
    --text-primary: #f5f5f7;
    --text-secondary: #a0a0b0;
    --border-color: rgba(255, 255, 255, 0.08);
    --glass-blur: 15px;
    --shadow-main: 0 10px 30px rgba(0, 0, 0, 0.5);
    --shadow-hover: 0 15px 40px rgba(0, 0, 0, 0.7);
    
    /* Color Palette Accents */
    /* DEFAULT GOLD (TeraMax Accent) */
    --accent-color: #d4af37;
    --accent-gradient: linear-gradient(135deg, #d4af37, #f9d976);
    --accent-glow: rgba(212, 175, 55, 0.3);
}

/* Light Theme Overrides */
body.light-theme {
    --bg-main: #f3f4f6;
    --bg-card: rgba(255, 255, 255, 0.85);
    --bg-header: rgba(255, 255, 255, 0.8);
    --bg-footer: #eaeaea;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --border-color: rgba(0, 0, 0, 0.08);
    --shadow-main: 0 10px 30px rgba(0, 0, 0, 0.06);
    --shadow-hover: 0 15px 40px rgba(0, 0, 0, 0.12);
}

/* Accent Color Variations */
body[data-accent="gold"] {
    --accent-color: #d4af37;
    --accent-gradient: linear-gradient(135deg, #d4af37, #f9d976);
    --accent-glow: rgba(212, 175, 55, 0.25);
}
body[data-accent="silver"] {
    --accent-color: #bdc3c7;
    --accent-gradient: linear-gradient(135deg, #ffffff, #bdc3c7);
    --accent-glow: rgba(189, 195, 199, 0.25);
}
body[data-accent="blue"] {
    --accent-color: #2980b9;
    --accent-gradient: linear-gradient(135deg, #2980b9, #6dd5fa);
    --accent-glow: rgba(41, 128, 185, 0.25);
}
body[data-accent="emerald"] {
    --accent-color: #27ae60;
    --accent-gradient: linear-gradient(135deg, #11998e, #38ef7d);
    --accent-glow: rgba(39, 174, 96, 0.25);
}
body[data-accent="crimson"] {
    --accent-color: #c0392b;
    --accent-gradient: linear-gradient(135deg, #e74c3c, #f1c40f);
    --accent-glow: rgba(192, 57, 43, 0.25);
}

/* --- Base Reset & General --- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    transition: background-color var(--transition-speed), border-color var(--transition-speed);
}

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

body {
    background-color: var(--bg-main);
    color: var(--text-primary);
    overflow-x: hidden;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    position: relative;
}

/* Set Font based on direction */
body[dir="rtl"] {
    font-family: var(--font-ar);
}
body[dir="ltr"] {
    font-family: var(--font-en);
}

a {
    text-decoration: none;
    color: inherit;
}

.container {
    width: 100%;
    max-width: 1300px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Hidden Utility */
.hidden {
    display: none !important;
}

/* --- Ambient Background Glow --- */
.bg-glow {
    position: fixed;
    width: 50vw;
    height: 50vw;
    border-radius: 50%;
    filter: blur(150px);
    z-index: -1;
    pointer-events: none;
    opacity: 0.15;
    transition: background var(--transition-speed);
}

body.light-theme .bg-glow {
    opacity: 0.06;
}

.bg-glow-1 {
    top: -15%;
    right: -10%;
    background: var(--accent-gradient);
}

.bg-glow-2 {
    bottom: -15%;
    left: -10%;
    background: var(--accent-gradient);
}

/* --- Header & Navigation --- */
.main-header {
    background-color: var(--bg-header);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.header-logo {
    height: 55px;
    width: auto;
    object-fit: contain;
    filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.3));
    transition: transform 0.5s var(--transition-smooth);
}

.header-logo:hover {
    transform: rotate(5deg) scale(1.05);
}

.brand-text {
    display: flex;
    flex-direction: column;
}

.site-title {
    font-size: 1.3rem;
    font-weight: 700;
    line-height: 1.2;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.5px;
}

.site-subtitle {
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.header-controls {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

/* --- Control Buttons --- */
.control-btn {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    background-color: rgba(255, 255, 255, 0.03);
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    transition: all 0.25s var(--transition-smooth);
}

.control-btn:hover {
    background-color: var(--accent-color);
    color: #000 !important;
    border-color: var(--accent-color);
    box-shadow: 0 0 15px var(--accent-glow);
    transform: translateY(-2px);
}

body.light-theme .control-btn {
    background-color: rgba(0, 0, 0, 0.03);
}

/* Theme Dropdown Control */
.control-dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: 55px;
    left: 0;
    width: 250px;
    background-color: var(--bg-card);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 1.25rem;
    box-shadow: var(--shadow-main);
    opacity: 0;
    transform: translateY(15px);
    pointer-events: none;
    transition: all 0.3s var(--transition-smooth);
    z-index: 101;
}

/* Align dropdown based on language direction */
body[dir="rtl"] .dropdown-menu {
    left: 0;
    right: auto;
}
body[dir="ltr"] .dropdown-menu {
    right: 0;
    left: auto;
}

.control-dropdown:hover .dropdown-menu {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.dropdown-header {
    font-weight: 700;
    font-size: 0.95rem;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.theme-toggle-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.toggle-mode-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    width: 36px;
    height: 36px;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.95rem;
    transition: all 0.2s;
}

.toggle-mode-btn:hover {
    border-color: var(--accent-color);
    color: var(--accent-color);
}

.menu-divider {
    border: 0;
    height: 1px;
    background-color: var(--border-color);
    margin: 0.8rem 0;
}

.color-options-title {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.color-presets {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.color-dot {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: 2px solid transparent;
    cursor: pointer;
    position: relative;
    transition: transform 0.2s;
}

.color-dot:hover {
    transform: scale(1.15);
}

.color-dot.active {
    border-color: var(--text-primary);
    box-shadow: 0 0 8px var(--accent-glow);
}

/* Language Label formatting */
.lang-btn {
    font-weight: 700;
    font-size: 0.85rem;
}

/* --- Main Info & Search Section --- */
.info-section {
    margin-top: 2.5rem;
    margin-bottom: 2rem;
}

.welcome-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 2.5rem;
    box-shadow: var(--shadow-main);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
}

.welcome-content {
    max-width: 60%;
}

.welcome-content h2 {
    font-size: 1.8rem;
    font-weight: 800;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
    line-height: 1.3;
}

.welcome-content p {
    color: var(--text-secondary);
    line-height: 1.6;
    font-size: 0.95rem;
}

/* Search Box style */
.search-box-container {
    position: relative;
    width: 320px;
    max-width: 100%;
}

.search-input {
    width: 100%;
    padding: 0.9rem 2.8rem 0.9rem 1.2rem;
    background-color: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    color: var(--text-primary);
    font-size: 0.9rem;
    outline: none;
    transition: all 0.3s;
}

body.light-theme .search-input {
    background-color: rgba(255, 255, 255, 0.5);
}

/* Adjust search padding/icons by direction */
body[dir="rtl"] .search-input {
    padding: 0.9rem 2.8rem 0.9rem 1.2rem;
}
body[dir="ltr"] .search-input {
    padding: 0.9rem 1.2rem 0.9rem 2.8rem;
}

.search-icon {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
    font-size: 1.05rem;
    pointer-events: none;
    transition: color 0.3s;
}

body[dir="rtl"] .search-icon {
    right: 1.2rem;
    left: auto;
}
body[dir="ltr"] .search-icon {
    left: 1.2rem;
    right: auto;
}

.search-input:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 15px var(--accent-glow);
}

.search-input:focus + .search-icon {
    color: var(--accent-color);
}

/* --- Gallery Navigation Tabs --- */
.gallery-tabs-section {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 1rem;
}

.tabs-scroll-container {
    overflow-x: auto;
    max-width: 100%;
    scrollbar-width: none; /* Hide scrollbar for Firefox */
}

.tabs-scroll-container::-webkit-scrollbar {
    display: none; /* Hide scrollbar for Chrome/Safari */
}

.gallery-tabs {
    display: flex;
    gap: 0.75rem;
}

.tab-btn {
    padding: 0.75rem 1.5rem;
    background-color: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-secondary);
    font-weight: 600;
    cursor: pointer;
    font-size: 0.95rem;
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.25s var(--transition-smooth);
}

body.light-theme .tab-btn {
    background-color: rgba(0, 0, 0, 0.02);
}

.tab-btn i {
    font-size: 0.85rem;
}

.tab-btn:hover {
    color: var(--text-primary);
    background-color: rgba(255, 255, 255, 0.05);
    border-color: var(--text-secondary);
}

.tab-btn.active {
    color: #000;
    background: var(--accent-gradient);
    border-color: var(--accent-color);
    box-shadow: 0 4px 15px var(--accent-glow);
}

/* Action buttons (like ZIP download) */
.action-btn {
    padding: 0.75rem 1.25rem;
    background-color: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--accent-color);
    color: var(--accent-color);
    border-radius: 12px;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    transition: all 0.25s;
}

body.light-theme .action-btn {
    background-color: #fff;
}

.action-btn:hover {
    background: var(--accent-gradient);
    color: #000;
    border-color: var(--accent-color);
    box-shadow: 0 4px 15px var(--accent-glow);
    transform: translateY(-2px);
}

/* --- Gallery Grid & Card Designs --- */
.gallery-grid-section {
    flex-grow: 1;
    margin-bottom: 4rem;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

/* Gallery Card */
.gallery-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-main);
    display: flex;
    flex-direction: column;
    transform: translateY(0);
    transition: all 0.3s var(--transition-smooth);
    opacity: 0;
    animation: fadeInUp 0.5s forwards ease;
}

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

.gallery-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
    border-color: var(--accent-color);
}

/* Card Image Area */
.card-img-wrapper {
    position: relative;
    aspect-ratio: 4 / 3;
    overflow: hidden;
    cursor: pointer;
    background-color: rgba(0, 0, 0, 0.15);
}

.card-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s var(--transition-smooth);
}

.gallery-card:hover .card-img {
    transform: scale(1.08);
}

/* Image overlay on hover */
.card-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8) 0%, rgba(0, 0, 0, 0.2) 60%, rgba(0, 0, 0, 0) 100%);
    display: flex;
    align-items: flex-end;
    padding: 1.25rem;
    opacity: 0;
    transition: opacity 0.3s;
}

.gallery-card:hover .card-overlay {
    opacity: 1;
}

.overlay-details {
    color: #fff;
    width: 100%;
}

.overlay-details .image-name {
    font-size: 0.95rem;
    font-weight: 600;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    margin-bottom: 0.2rem;
}

.overlay-details .image-size {
    font-size: 0.75rem;
    color: #ccc;
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

/* Card Body Actions */
.card-footer {
    padding: 1.25rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.5rem;
    margin-top: auto;
}

.card-title {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    flex-grow: 1;
}

.card-download-btn {
    width: 38px;
    height: 38px;
    border-radius: 10px;
    border: 1px solid var(--border-color);
    background-color: rgba(255, 255, 255, 0.03);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 0.95rem;
    transition: all 0.2s;
    flex-shrink: 0;
}

.card-download-btn:hover {
    background: var(--accent-gradient);
    color: #000;
    border-color: var(--accent-color);
    box-shadow: 0 0 10px var(--accent-glow);
    transform: scale(1.05);
}

/* --- Empty and Loading States --- */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 5rem 2rem;
    text-align: center;
}

.empty-icon {
    font-size: 4rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    opacity: 0.5;
}

.empty-state h3 {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.empty-state p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* --- Custom Lightbox Overlay --- */
.lightbox {
    position: fixed;
    inset: 0;
    background-color: rgba(6, 6, 8, 0.95);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 2rem;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.lightbox.active {
    opacity: 1;
    pointer-events: auto;
}

.lightbox-close {
    position: absolute;
    top: 2rem;
    right: 2rem;
    background: transparent;
    border: none;
    color: #fff;
    font-size: 2.2rem;
    cursor: pointer;
    opacity: 0.7;
    transition: all 0.2s;
    z-index: 1010;
}

.lightbox-close:hover {
    opacity: 1;
    transform: scale(1.1);
}

/* Navigation controls inside lightbox */
.lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: #fff;
    width: 55px;
    height: 55px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1.25rem;
    transition: all 0.2s;
    z-index: 1010;
}

.lightbox-nav:hover {
    background: var(--accent-gradient);
    color: #000;
    border-color: var(--accent-color);
    box-shadow: 0 0 15px var(--accent-glow);
}

/* Reverse navigation for RTL/LTR */
body[dir="rtl"] .lightbox-prev { right: 2rem; }
body[dir="rtl"] .lightbox-next { left: 2rem; }
body[dir="ltr"] .lightbox-prev { left: 2rem; }
body[dir="ltr"] .lightbox-next { right: 2rem; }

.lightbox-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    max-width: 80%;
    max-height: 80%;
    position: relative;
}

.lightbox-image-wrapper {
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.9);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.lightbox-img {
    max-width: 100%;
    max-height: 70vh;
    object-fit: contain;
    transform: scale(1);
    transition: transform 0.25s var(--transition-smooth);
}

.lightbox-info {
    margin-top: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    max-width: 600px;
    background-color: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.06);
    padding: 0.9rem 1.5rem;
    border-radius: 14px;
    gap: 1rem;
}

.lightbox-filename {
    color: #fff;
    font-size: 0.95rem;
    font-weight: 500;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.lightbox-actions {
    display: flex;
    gap: 0.5rem;
}

.lightbox-action-btn {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.02);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.2s;
}

.lightbox-action-btn:hover {
    background-color: #fff;
    color: #000;
}

/* --- Footer styles --- */
.main-footer {
    background-color: var(--bg-footer);
    border-top: 1px solid var(--border-color);
    padding: 2.5rem 0;
    margin-top: auto;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.footer-left {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.footer-logo {
    height: 35px;
    width: auto;
    opacity: 0.7;
}

.footer-right {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* --- Responsive Adjustments --- */
@media (max-width: 992px) {
    .welcome-card {
        flex-direction: column;
        align-items: stretch;
        padding: 2rem;
    }
    
    .welcome-content {
        max-width: 100%;
    }
    
    .search-box-container {
        width: 100%;
    }
}

@media (max-width: 768px) {
    .header-container {
        height: 70px;
    }
    
    .site-title {
        font-size: 1.15rem;
    }
    
    .header-logo {
        height: 45px;
    }
    
    .gallery-tabs-section {
        flex-direction: column;
        align-items: stretch;
    }
    
    .action-btn {
        width: 100%;
        justify-content: center;
    }
    
    .lightbox-nav {
        width: 45px;
        height: 45px;
    }
    
    body[dir="rtl"] .lightbox-prev { right: 0.5rem; }
    body[dir="rtl"] .lightbox-next { left: 0.5rem; }
    body[dir="ltr"] .lightbox-prev { left: 0.5rem; }
    body[dir="ltr"] .lightbox-next { right: 0.5rem; }
    
    .lightbox-info {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-left {
        flex-direction: column;
    }
}