/* assets/css/style.css */

:root {
    /* Color Palette */
    --color-bg-dark: #0a0f0d; /* Deep black-green */
    --color-bg-darker: #050806;
    --color-accent-green: #00ff88; /* Neon green glow */
    --color-accent-gold: #d4af37; /* Gold typography */
    --color-text-main: #f0f4f2;
    --color-text-muted: #9aa49f;
    
    /* Glassmorphism */
    --glass-bg: rgba(10, 20, 15, 0.6);
    --glass-border: rgba(0, 255, 136, 0.2);
    
    /* Fonts */
    --font-arabic: 'Tajawal', sans-serif;
    --font-english: 'Tajawal', sans-serif;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-smooth: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body, input, button, textarea, select {
    font-family: 'Tajawal', sans-serif !important;
}

body {
    background: linear-gradient(135deg, var(--color-bg-darker) 0%, var(--color-bg-dark) 100%);
    color: var(--color-text-main);
    min-height: 100vh;
    overflow-x: hidden;
    direction: rtl; /* Default Arabic */
}

/* LTR Support */
body[dir="ltr"] {
    font-family: var(--font-english) !important;
    direction: ltr;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    color: var(--color-accent-gold);
    font-weight: 700;
    margin-bottom: 1rem;
    text-shadow: 0 0 10px rgba(212, 175, 55, 0.2);
}

p {
    line-height: 1.6;
    color: var(--color-text-muted);
}

a {
    color: var(--color-accent-green);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: #fff;
    text-shadow: 0 0 15px var(--color-accent-green);
}

/* UI Elements - Glassmorphism */
.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 2rem;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
}

/* Buttons */
.btn-primary {
    background: transparent;
    color: var(--color-accent-green);
    border: 1px solid var(--color-accent-green);
    padding: 0.8rem 1.5rem;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: bold;
    cursor: pointer;
    transition: all var(--transition-smooth);
    position: relative;
    overflow: hidden;
    box-shadow: 0 0 10px rgba(0, 255, 136, 0.1);
}

.btn-primary:hover {
    background: var(--color-accent-green);
    color: var(--color-bg-darker);
    box-shadow: 0 0 20px var(--color-accent-green);
}

.btn-gold {
    background: var(--color-accent-gold);
    color: var(--color-bg-darker);
    border: none;
    padding: 0.8rem 1.5rem;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: bold;
    cursor: pointer;
    transition: all var(--transition-smooth);
}

.btn-gold:hover {
    background: #e5c158;
    box-shadow: 0 0 20px rgba(212, 175, 55, 0.6);
}

/* Navbar */
.navbar {
    padding: 50px 5% 15px; /* Increased top padding to accommodate the taller branding area */
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(10, 20, 15, 0.95); /* Richer glassmorphic backing */
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    display: flex;
    justify-content: center;
    align-items: center;
    transition: padding var(--transition-fast), background var(--transition-fast);
}

.navbar::before {
    content: "مكتبات كلية السيد نور الدائم العجيمي التقانية";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    text-align: center;
    font-size: 14px;
    color: var(--color-accent-gold);
    background: #030604;
    padding: 10px 0;
    font-weight: 700;
    letter-spacing: 0.5px;
    border-bottom: 1px solid rgba(212, 175, 55, 0.25); /* Subtle gold separating line */
    text-shadow: 0 0 8px rgba(212, 175, 55, 0.3);
    z-index: 1001;
    transition: all var(--transition-fast);
}

.nav-content {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    position: relative;
}

.nav-links {
    display: flex;
    gap: 1.5rem;
    list-style: none;
    align-items: center;
    flex-wrap: wrap;
    justify-content: center;
    flex: 1;
}

.nav-links a {
    color: var(--color-text-main);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: all var(--transition-fast);
    position: relative;
    white-space: nowrap;
    padding: 5px 10px;
}

.nav-links a:hover, .nav-links a.active {
    color: var(--color-accent-gold);
}

.nav-links a.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 10%;
    width: 80%;
    height: 2px;
    background: var(--color-accent-gold);
}

.nav-actions {
    display: flex;
    gap: 1rem;
    align-items: center;
    position: absolute;
    left: 15px;
}

.admin-icon-btn {
    color: var(--color-accent-gold);
    font-size: 1.3rem;
    transition: transform var(--transition-fast);
}

.admin-icon-btn:hover {
    transform: scale(1.2);
}

/* Navbar links redundancy removal */

.nav-actions {
    display: flex;
    gap: 1rem;
    align-items: center;
}

/* Language Switcher */
.lang-switch {
    background: none;
    border: 1px solid var(--color-text-muted);
    color: var(--color-text-main);
    padding: 0.3rem 0.8rem;
    border-radius: 4px;
    cursor: pointer;
    transition: all var(--transition-fast);
}
.lang-switch:hover {
    border-color: var(--color-accent-gold);
    color: var(--color-accent-gold);
}

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 0 5%;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(0, 255, 136, 0.15) 0%, rgba(0,0,0,0) 70%);
    z-index: 0;
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.hero-content h1 {
    font-size: 4rem;
    margin-bottom: 1.5rem;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

/* Library Cards (Home Page) */
.library-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    padding: 5rem 5%;
}

.lib-card {
    transition: transform var(--transition-smooth);
    text-align: center;
}

.lib-card:hover {
    transform: translateY(-10px);
    border-color: var(--color-accent-gold);
}

.lib-card i {
    font-size: 3rem;
    color: var(--color-accent-green);
    margin-bottom: 1rem;
}

/* Book Grid */
.book-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 2rem;
    padding: 2rem 5%;
    justify-items: center;
}

.book-item {
    background: var(--glass-bg);
    border: 1px solid rgba(255,255,255,0.05);
    border-radius: 12px;
    padding: 1rem;
    text-align: center;
    transition: all var(--transition-smooth);
    position: relative;
    overflow: hidden;
    width: 100%;
}

.book-item:hover {
    border-color: var(--color-accent-green);
    transform: scale(1.05);
    box-shadow: 0 10px 20px rgba(0, 255, 136, 0.15);
}

.book-cover {
    width: 100%;
    height: auto;
    aspect-ratio: 0.71; /* A4 ratio */
    object-fit: cover;
    border-radius: 4px;
    margin: 0 auto 1rem;
    display: block;
    box-shadow: 0 4px 10px rgba(0,0,0,0.5);
}

.book-title {
    font-size: 1.1rem;
    color: var(--color-text-main);
    margin-bottom: 0.5rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.book-author {
    font-size: 0.9rem;
    color: var(--color-accent-gold);
}

/* Search Bar */
.search-container {
    padding: 2rem 5%;
    display: flex;
    justify-content: center;
    gap: 1rem;
}

.search-input {
    width: 100%;
    max-width: 600px;
    padding: 1rem 1.5rem;
    border-radius: 30px;
    border: 1px solid var(--color-accent-green);
    background: rgba(0,0,0,0.3);
    color: #fff;
    font-size: 1.1rem;
    outline: none;
    transition: all var(--transition-fast);
}

.search-input:focus {
    box-shadow: 0 0 15px rgba(0, 255, 136, 0.3);
}

/* Forms */
.form-group {
    margin-bottom: 1.5rem;
    text-align: right;
}

body[dir="ltr"] .form-group {
    text-align: left;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--color-accent-gold);
}

.form-control {
    width: 100%;
    padding: 0.8rem;
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    color: #fff;
    outline: none;
    transition: border-color var(--transition-fast);
}

/* Combobox styling */
select { background-color: #000 !important; color: #fff !important; }

.form-control:focus {
    border-color: var(--color-accent-gold);
}

/* Modals */
.modal-overlay {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0,0,0,0.8);
    backdrop-filter: blur(5px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-fast);
}

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

.modal-content {
    width: 90%;
    max-width: 500px;
    position: relative;
    transform: translateY(-20px);
    transition: transform var(--transition-smooth);
}

.modal-overlay.active .modal-content {
    transform: translateY(0);
}

.close-modal {
    position: absolute;
    top: 15px;
    right: 15px;
    background: none;
    border: none;
    color: #fff;
    font-size: 1.5rem;
    cursor: pointer;
}
body[dir="ltr"] .close-modal {
    right: auto;
    left: 15px;
}

/* Responsive Adjustments & Mobile Menu - Unified for All Screen Widths */
.menu-toggle {
    display: flex !important; /* Always visible */
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    color: var(--color-accent-gold);
    font-size: 1.5rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    z-index: 1002;
    width: 45px;
    height: 45px;
    border-radius: 8px;
    position: absolute;
    right: 15px;
}

.menu-toggle:hover {
    color: var(--color-accent-green);
    background: rgba(0, 255, 136, 0.1);
    border-color: var(--color-accent-green);
    box-shadow: 0 0 10px rgba(0, 255, 136, 0.3);
}

/* Slide-out Navigation Drawer on the Right */
.nav-links {
    position: fixed !important;
    top: 0 !important;
    right: 0 !important;
    width: 320px !important;
    height: 100vh !important;
    background: rgba(5, 8, 6, 0.98) !important;
    backdrop-filter: blur(25px) !important;
    -webkit-backdrop-filter: blur(25px) !important;
    border-left: 1px solid var(--glass-border) !important;
    border-right: none !important;
    box-shadow: -10px 0 30px rgba(0, 0, 0, 0.8) !important;
    display: flex !important;
    flex-direction: column !important;
    justify-content: flex-start !important;
    align-items: stretch !important;
    padding: 90px 1.5rem 2rem !important; /* spaced below top header content */
    gap: 0.8rem !important;
    transform: translateX(100%);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1) !important;
    z-index: 999 !important;
    overflow-y: auto !important;
    list-style: none;
}

.nav-links.active {
    transform: translateX(0) !important;
}

/* Close Button Container & Button Inside Drawer */
.menu-close-container {
    display: flex;
    justify-content: flex-end;
    margin-bottom: 0.5rem;
    width: 100%;
}

.menu-close-btn {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--color-text-muted);
    font-size: 1.8rem;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.menu-close-btn:hover {
    color: var(--color-accent-gold);
    border-color: var(--color-accent-gold);
    background: rgba(212, 175, 55, 0.1);
}

.nav-links li {
    width: 100% !important;
    text-align: right !important;
}

.nav-links a {
    display: flex !important;
    align-items: center;
    gap: 12px;
    padding: 12px 15px !important;
    width: 100%;
    font-size: 1.05rem !important;
    color: var(--color-text-main) !important;
    border-bottom: none !important;
    border-radius: 8px;
    background: transparent !important;
    transition: all var(--transition-fast) !important;
    text-align: right;
    box-shadow: none !important;
}

.nav-links a i {
    font-size: 1.1rem;
    color: var(--color-accent-gold);
    width: 24px;
    text-align: center;
    transition: color var(--transition-fast);
}

.nav-links a:hover, .nav-links a.active {
    background: rgba(0, 255, 136, 0.08) !important;
    color: var(--color-accent-green) !important;
}

.nav-links a:hover i, .nav-links a.active i {
    color: var(--color-accent-green);
}

.nav-links a.active::after {
    display: none !important; /* remove underline */
}

.nav-actions {
    margin-right: 0;
    gap: 1rem;
}

    /* Hero Section Responsive */
    .hero {
        padding-top: 80px;
    }

    .hero-content h1 {
        font-size: 2.2rem !important;
    }

    .hero-content p {
        font-size: 1.05rem !important;
    }

    /* Grid and card layout updates for flawless responsiveness */
    .library-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        padding: 3rem 4%;
    }

    .book-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        gap: 1rem;
        padding: 1rem 2%;
    }

    .book-item {
        padding: 0.8rem;
    }

    .book-cover {
        width: 100%;
        height: auto;
        aspect-ratio: 0.7; /* A4 aspect ratio helper */
    }

    /* AI Widget positions */
    .ai-widget, .whatsapp-float {
        bottom: 25px;
        right: 20px;
    }
    
    body[dir="ltr"] .ai-widget, body[dir="ltr"] .whatsapp-float {
        left: 20px;
        right: auto;
    }
    
    .ai-widget {
        bottom: 100px;
    }

    .ai-chat-box {
        width: 290px;
        bottom: 75px;
    }
}

@media (max-width: 480px) {
    .navbar::before {
        font-size: 11px;
        padding: 6px 0;
    }
    
    .navbar {
        padding: 38px 4% 10px; /* Reduced space on tiny screens */
    }

    .hero-content h1 {
        font-size: 1.8rem !important;
    }

    .hero-buttons {
        flex-direction: column;
        gap: 0.8rem;
        width: 100%;
    }

    .hero-buttons .btn-gold, .hero-buttons .btn-primary {
        width: 100%;
        text-align: center;
    }
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-15px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Floating WhatsApp */
.whatsapp-float {
    position: fixed;
    width: 60px;
    height: 60px;
    bottom: 40px;
    right: 40px;
    background-color: #25d366;
    color: #FFF;
    border-radius: 50px;
    text-align: center;
    font-size: 30px;
    box-shadow: 2px 2px 3px #999;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform var(--transition-fast);
}

body[dir="ltr"] .whatsapp-float {
    right: auto;
    left: 40px;
}

.whatsapp-float:hover {
    transform: scale(1.1);
    color: #FFF;
}

/* AI Widget */
.ai-widget {
    position: fixed;
    bottom: 110px;
    right: 40px;
    z-index: 9999;
}
body[dir="ltr"] .ai-widget {
    right: auto;
    left: 40px;
}
.ai-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--color-accent-gold) 0%, #ff8c00 100%);
    color: #fff;
    border-radius: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    cursor: pointer;
    box-shadow: 0 4px 10px rgba(212, 175, 55, 0.4);
    transition: transform var(--transition-fast);
}
.ai-icon:hover {
    transform: scale(1.1);
}
.ai-chat-box {
    position: absolute;
    bottom: 75px;
    right: 0;
    width: 320px;
    max-height: 400px;
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    border: 1px solid var(--color-accent-gold);
    border-radius: 12px;
    padding: 1rem;
    display: none;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.5);
    flex-direction: column;
    gap: 10px;
}
body[dir="ltr"] .ai-chat-box {
    right: auto;
    left: 0;
}
.ai-chat-box.active {
    display: flex !important;
}
.ai-messages-container {
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-height: 250px;
    padding-right: 5px;
}
.ai-msg {
    background: rgba(255,255,255,0.1);
    padding: 10px;
    border-radius: 8px;
    font-size: 0.95rem;
    color: #fff;
    line-height: 1.5;
}
.user-msg {
    background: rgba(0, 255, 136, 0.2);
    padding: 10px;
    border-radius: 8px;
    font-size: 0.95rem;
    color: #fff;
    line-height: 1.5;
    align-self: flex-end;
}
.ai-input {
    width: 100%;
    padding: 10px;
    border-radius: 5px;
    border: 1px solid var(--glass-border);
    background: rgba(0,0,0,0.4);
    color: #fff;
    outline: none;
}

/* Category Filter UI */
.category-filter-container {
    padding: 0 5% 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.category-filter-scroll {
    display: flex;
    overflow-x: auto;
    gap: 10px;
    padding-bottom: 10px;
    scrollbar-width: thin;
    scrollbar-color: var(--color-accent-gold) rgba(255,255,255,0.05);
}

.category-filter-scroll::-webkit-scrollbar {
    height: 6px;
}

.category-filter-scroll::-webkit-scrollbar-track {
    background: rgba(255,255,255,0.05);
    border-radius: 10px;
}

.category-filter-scroll::-webkit-scrollbar-thumb {
    background: var(--color-accent-gold);
    border-radius: 10px;
}

.category-btn {
    background: rgba(255,255,255,0.05);
    color: var(--color-text-main);
    border: 1px solid var(--glass-border);
    padding: 8px 16px;
    border-radius: 20px;
    white-space: nowrap;
    cursor: pointer;
    font-size: 0.95rem;
    transition: all var(--transition-fast);
}

.category-btn:hover {
    background: rgba(255,255,255,0.1);
    border-color: var(--color-accent-gold);
}

.category-btn.active {
    background: var(--color-accent-gold);
    color: #000;
    border-color: var(--color-accent-gold);
    font-weight: bold;
}