/* =========================================
   CSS Variables (iOS Glassmorphism Dark Theme)
   ========================================= */
:root {
    --color-primary-dark: #030812; /* Deep iOS Dark Space */
    --color-primary: #0a1f3d;
    --color-primary-light: #162a45;
    --color-gold: #f3c246; /* Vibrant iOS Gold */
    --color-gold-dark: #d4a325; /* Defined gold-dark for gradients */
    --color-gold-light: #ffe596;
    --color-accent-red: #ff3b30; /* iOS System Red */
    --color-white: #ffffff;
    --color-text-main: #f1f5f9; /* Off-White for High Contrast on Dark */
    --color-text-muted: #94a3b8;
    
    --transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
    
    /* iOS Glassmorphism styling */
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-bg-hover: rgba(255, 255, 255, 0.07);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-border-hover: rgba(255, 255, 255, 0.15);
    --glass-blur: blur(25px);
    --glass-shadow: 0 15px 35px rgba(0, 0, 0, 0.4), inset 0 1px 1px rgba(255, 255, 255, 0.1);
    
    --border-radius: 20px;
}

/* =========================================
   Global Reset & Typography
   ========================================= */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Cairo', sans-serif;
    background-color: #030710;
    color: var(--color-text-main);
    line-height: 1.8;
    overflow-x: hidden;
}

/* Custom Premium Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: #030812;
}
::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.15);
    border-radius: 4px;
    border: 2px solid #030812;
}
::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* Floating iOS Background Blobs */
.glow-blob {
    position: fixed;
    border-radius: 50%;
    filter: blur(140px);
    -webkit-filter: blur(140px);
    z-index: -2;
    pointer-events: none;
    opacity: 0.18;
}

.blob-1 {
    width: 600px;
    height: 600px;
    background: var(--color-gold);
    top: -100px;
    left: -100px;
    animation: drift 28s infinite alternate ease-in-out;
}

.blob-2 {
    width: 700px;
    height: 700px;
    background: #0f3d79;
    bottom: -150px;
    right: -150px;
    animation: drift-reverse 35s infinite alternate ease-in-out;
}

.blob-3 {
    width: 450px;
    height: 450px;
    background: var(--color-accent-red);
    top: 35%;
    left: 35%;
    animation: drift-slow 40s infinite alternate ease-in-out;
}

@keyframes drift {
    0% {
        transform: translate(0, 0) scale(1) rotate(0deg);
    }
    100% {
        transform: translate(100px, 80px) scale(1.1) rotate(45deg);
    }
}

@keyframes drift-reverse {
    0% {
        transform: translate(0, 0) scale(1.1) rotate(0deg);
    }
    100% {
        transform: translate(-120px, -80px) scale(0.9) rotate(-45deg);
    }
}

@keyframes drift-slow {
    0% {
        transform: translate(0, 0) scale(1) rotate(0deg);
    }
    50% {
        transform: translate(80px, -50px) scale(1.05) rotate(20deg);
    }
    100% {
        transform: translate(-50px, 80px) scale(0.95) rotate(-20deg);
    }
}

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

ul {
    list-style: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 120px 0;
    position: relative;
}

/* Base Glassmorphism Card */
.box-shadow-card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius);
    box-shadow: var(--glass-shadow);
    padding: 40px;
    position: relative;
    overflow: hidden;
    transition: var(--transition);
}

.box-shadow-card:hover {
    transform: translateY(-2px) scale(1.002);
    background: var(--glass-bg-hover);
    border-color: var(--glass-border-hover);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.45), inset 0 1px 1px rgba(255, 255, 255, 0.15);
}

/* Remove side bars for a cleaner iOS look, use top gold accent */
.box-shadow-card::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(to left, var(--color-gold), transparent);
}

/* =========================================
   Typography & Headers
   ========================================= */
h1, h2, h3, h4 {
    color: var(--color-white);
    font-weight: 700;
    margin-bottom: 20px;
    text-shadow: 0 2px 10px rgba(0,0,0,0.3);
}

.section-title {
    text-align: center;
    margin-bottom: 60px;
}

.section-title h2 {
    font-size: 2.8rem;
    color: var(--color-white);
    position: relative;
    display: inline-block;
    padding-bottom: 15px;
    letter-spacing: -0.5px;
}

.underline {
    width: 100px;
    height: 4px;
    background: linear-gradient(to left, var(--color-gold), transparent);
    margin: 0 auto;
    border-radius: 2px;
}

.section-subtitle {
    text-align: center;
    color: var(--color-text-muted);
    font-size: 1.2rem;
    margin-top: 15px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* iOS Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 15px 40px;
    border-radius: 35px;
    font-weight: 700;
    font-size: 1.1rem;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    box-shadow: 0 8px 25px rgba(0,0,0,0.3);
}

.btn-primary {
    background: rgba(243, 194, 70, 0.85);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    color: var(--color-primary-dark);
    border: 1px solid rgba(255,255,255,0.25);
}

.btn-primary:hover {
    background: var(--color-gold);
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(243, 194, 70, 0.4);
}

/* =========================================
   Navbar (iOS Glassmorphism Header)
   ========================================= */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background-color: rgba(3, 8, 18, 0.7);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 1000;
    transition: var(--transition);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

/* Navbar Scrolled State */
.navbar.scrolled {
    background-color: rgba(3, 8, 18, 0.9);
    backdrop-filter: blur(30px);
    -webkit-backdrop-filter: blur(30px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
}

.navbar.scrolled .nav-container {
    height: 75px;
}

.navbar.scrolled .logo-img {
    height: 55px;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 95px;
    transition: var(--transition);
}

.logo {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo-img {
    height: 72px;
    width: auto;
    filter: drop-shadow(0 2px 10px rgba(0,0,0,0.5));
    transition: var(--transition);
}

.logo-text h2 {
    color: var(--color-white);
    margin: 0;
    font-size: 1.6rem;
    line-height: 1.2;
    font-weight: 800;
}

.logo-text span {
    font-size: 0.9rem;
    color: var(--color-gold);
    font-weight: 600;
    letter-spacing: 0.5px;
}

.nav-links {
    display: flex;
    gap: 12px;
    align-items: center;
}

.nav-links li a {
    color: rgba(255, 255, 255, 0.7);
    font-weight: 600;
    font-size: 0.92rem;
    position: relative;
    padding: 6px 12px;
    border-radius: 20px;
    transition: var(--transition);
    border: 1px solid transparent;
}

.nav-links li a:hover {
    color: var(--color-white);
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.05);
}

.nav-links li a.active {
    color: var(--color-gold);
    background: rgba(243, 194, 70, 0.08);
    border: 1px solid rgba(243, 194, 70, 0.2);
}

/* Animated Hamburger Menu */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 26px;
    height: 18px;
    cursor: pointer;
    z-index: 1001;
    transition: var(--transition);
}

.hamburger span {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--color-white);
    border-radius: 2px;
    transition: all 0.3s cubic-bezier(0.645, 0.045, 0.355, 1);
}

.hamburger.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
    background-color: var(--color-gold);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
    transform: translateX(10px);
}

.hamburger.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
    background-color: var(--color-gold);
}

/* =========================================
   Hero Section (Pure Glassmorphism)
   ========================================= */
.hero {
    height: 100vh;
    min-height: 700px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--color-white);
    padding-top: 90px;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    /* Subtle background grid overlay */
    background-image: 
        radial-gradient(rgba(255,255,255,0.15) 1px, transparent 0),
        radial-gradient(rgba(255,255,255,0.1) 1px, transparent 0);
    background-size: 40px 40px;
    background-position: 0 0, 20px 20px;
    opacity: 0.2;
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 900px;
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(30px);
    -webkit-backdrop-filter: blur(30px);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 30px;
    padding: 70px 50px;
    box-shadow: var(--glass-shadow);
    animation: fadeInUp 1.2s cubic-bezier(0.165, 0.84, 0.44, 1);
}

.hero-icon {
    font-size: 5rem;
    color: var(--color-gold);
    margin-bottom: 25px;
    filter: drop-shadow(0 0 25px rgba(243, 194, 70, 0.6));
}

.hero h1 {
    color: var(--color-white);
    font-size: 4rem;
    margin-bottom: 20px;
    text-shadow: 0 10px 30px rgba(0,0,0,0.5);
    letter-spacing: -0.5px;
}

.hero p {
    font-size: 1.5rem;
    font-weight: 400;
    margin-bottom: 45px;
    color: #f1f5f9;
    text-shadow: 0 5px 15px rgba(0,0,0,0.4);
    line-height: 1.6;
}

/* =========================================
   Academic Layout & Formatting
   ========================================= */
.academic-card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius);
    box-shadow: var(--glass-shadow);
    padding: 60px;
    position: relative;
    transition: var(--transition);
}

.academic-card:hover {
    transform: translateY(-2px) scale(1.002);
    background: var(--glass-bg-hover);
    border-color: var(--glass-border-hover);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.45);
}

.academic-title {
    font-size: 2.3rem;
    color: var(--color-white);
    margin-bottom: 25px;
    display: flex;
    align-items: center;
    gap: 15px;
}

.academic-title i {
    color: var(--color-gold);
    font-size: 1.8rem;
    filter: drop-shadow(0 0 10px rgba(243, 194, 70, 0.4));
}

.academic-subtitle {
    font-size: 1.5rem;
    color: var(--color-white);
    margin-top: 35px;
    margin-bottom: 15px;
    border-right: 4px solid var(--color-gold); /* RTL Border */
    padding-right: 15px;
    font-weight: 700;
}

.academic-text {
    font-size: 1.25rem;
    line-height: 2;
    color: #cbd5e1;
}

.academic-content p {
    font-size: 1.2rem;
    margin-bottom: 25px;
    text-align: justify;
    line-height: 1.95;
    color: #cbd5e1;
}

.decorative-line {
    width: 100px;
    height: 3px;
    background: linear-gradient(to left, var(--color-gold), transparent);
    margin-bottom: 30px;
}

/* Utilities */
.text-gold { color: var(--color-gold); }
.text-primary { color: var(--color-gold); }
.text-center { text-align: center; }
.italic-text { font-style: italic; font-weight: 300; }
.large-text { font-size: 1.45rem; line-height: 2.1; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

/* Index/TOC Section */
.index-list-container {
    padding: 50px;
}

.academic-index {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.academic-index li a {
    display: flex;
    align-items: baseline;
    color: var(--color-white);
    font-size: 1.35rem;
    font-weight: 600;
}

.academic-index li a:hover {
    color: var(--color-gold);
    transform: translateX(-4px); /* Very subtle slide for RTL */
}

.page-name {
    background: transparent;
    padding-left: 15px;
}

.dotted-leader {
    flex-grow: 1;
    border-bottom: 2px dotted rgba(255,255,255,0.15);
    margin: 0 15px;
}

.page-num {
    font-weight: 700;
    color: var(--color-accent-red);
    background: transparent;
    padding-right: 15px;
}

/* Grids */
.grid-2-col {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(480px, 1fr));
    gap: 40px;
}

.grid-3-col {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

/* Lists */
.bullet-list {
    margin-right: 15px;
}

.bullet-list li {
    position: relative;
    margin-bottom: 15px;
    font-size: 1.2rem;
    padding-right: 25px;
    color: #cbd5e1;
}

.bullet-list li::before {
    content: "\f124"; /* Elegant FontAwesome angle pointer */
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    color: var(--color-gold);
    font-size: 1rem;
    position: absolute;
    right: 0;
    top: 2px;
}

.ordered-list {
    margin-right: 20px;
    font-size: 1.2rem;
    color: #cbd5e1;
}

.ordered-list li {
    margin-bottom: 20px;
    padding-right: 10px;
}

.ordered-list li::marker {
    color: var(--color-gold);
    font-weight: 700;
}

/* Literature Cards */
.literature-card {
    background: rgba(255,255,255,0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-right: 5px solid var(--color-gold); /* RTL border */
    padding: 30px;
    margin-bottom: 25px;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.literature-card:hover {
    transform: translateX(-3px);
    background: rgba(255,255,255,0.04);
    border-color: rgba(255,255,255,0.08);
}

.literature-card h4 {
    margin-bottom: 12px;
    font-size: 1.3rem;
    color: var(--color-white);
}

/* Feature/Strategy Cards */
.feature-card {
    background: rgba(255,255,255,0.02);
    border: 1px solid rgba(255,255,255,0.05);
    padding: 40px 30px;
    border-radius: var(--border-radius);
    text-align: center;
    border-bottom: 4px solid rgba(255,255,255,0.1);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-4px) scale(1.005);
    background: rgba(255,255,255,0.04);
    border-color: rgba(243, 194, 70, 0.2);
    border-bottom-color: var(--color-gold);
    box-shadow: var(--glass-shadow);
}

.feature-card i {
    font-size: 3rem;
    color: var(--color-gold);
    margin-bottom: 20px;
    transition: var(--transition);
}

.feature-card:hover i {
    transform: scale(1.1);
}

.feature-card h4 {
    font-size: 1.4rem;
    color: var(--color-white);
}

/* Dark Accent Glass Container */
.bg-primary-dark {
    background: rgba(3, 8, 18, 0.65);
    border: 1px solid rgba(243, 194, 70, 0.25);
}

.text-white {
    color: var(--color-white) !important;
}

.border-gold {
    border: 2px solid var(--color-gold);
}

/* References List */
.references-list {
    margin-top: 20px;
}

.references-list li {
    margin-bottom: 20px;
    font-size: 1.15rem;
    padding-right: 35px;
    position: relative;
    color: #cbd5e1;
}

.references-list li::before {
    content: "\f02d";
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    position: absolute;
    right: 0;
    top: 4px;
    color: var(--color-gold);
    font-size: 1.1rem;
}

/* =========================================
   Inline Video Reference Cards
   ========================================= */
.visual-reference-card {
    background: rgba(0,0,0,0.2);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: var(--border-radius);
    overflow: hidden;
    margin: 40px 0;
    box-shadow: var(--glass-shadow);
    transition: var(--transition);
}

.visual-reference-card:hover {
    border-color: rgba(255,255,255,0.12);
}

.visual-reference-card .video-wrapper {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
    overflow: hidden;
}

.visual-reference-card .video-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 0;
}

.video-caption {
    padding: 20px 25px;
    font-size: 1.05rem;
    color: #cbd5e1;
    border-top: 1px solid rgba(255,255,255,0.06);
    background: rgba(3, 8, 18, 0.4);
    display: flex;
    align-items: center;
    gap: 15px;
}

.video-caption i {
    color: var(--color-accent-red);
    font-size: 1.4rem;
}

.video-caption strong {
    color: var(--color-white);
}

/* =========================================
   Footer (Glassmorphism Dark Footer)
   ========================================= */
.footer {
    background-color: rgba(3, 8, 18, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    color: var(--color-white);
    padding-top: 80px;
    border-top: 1px solid rgba(255,255,255,0.08);
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 50px;
    margin-bottom: 60px;
}

.footer-logo {
    flex: 1;
    min-width: 280px;
}

.footer-logo h3 {
    color: var(--color-white);
    font-size: 1.9rem;
    margin-top: 10px;
}

.footer-thanks {
    flex: 2;
    min-width: 320px;
}

.footer-thanks h4 {
    color: var(--color-gold);
    font-size: 1.5rem;
    border-bottom: 2px solid var(--color-gold);
    display: inline-block;
    padding-bottom: 8px;
    margin-bottom: 25px;
}

.footer-thanks p {
    font-size: 1.15rem;
    color: #cbd5e1;
    line-height: 1.9;
}

.footer-bottom {
    background-color: rgba(0, 0, 0, 0.4);
    text-align: center;
    padding: 25px;
    color: #64748b;
    font-size: 0.95rem;
    border-top: 1px solid rgba(255,255,255,0.05);
}

/* =========================================
   Search Bar & Highlighting
   ========================================= */
.search-container {
    position: relative;
    display: flex;
    align-items: center;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 20px;
    padding: 2px 12px;
    margin: 0 20px;
    width: 280px;
    transition: var(--transition);
}

.search-container.hero-search {
    width: 100%;
    max-width: 500px;
    margin: 25px auto;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.12);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border-radius: 30px;
    padding: 4px 18px;
}

.search-container.hero-search input {
    font-size: 1.05rem;
    padding: 10px 8px;
}

.search-container.hero-search button {
    font-size: 1.25rem;
}

.search-container.hero-search #search-results-count {
    font-size: 0.9rem;
}

.search-container:focus-within {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--color-gold);
    box-shadow: 0 0 15px rgba(243, 194, 70, 0.2);
}

.search-container input {
    background: transparent;
    border: none;
    outline: none;
    color: var(--color-white);
    padding: 8px 5px;
    font-size: 0.95rem;
    font-family: 'Cairo', sans-serif;
    width: 100%;
}

.search-container input::placeholder {
    color: rgba(255, 255, 255, 0.4);
}

.search-container button {
    background: transparent;
    border: none;
    color: var(--color-gold);
    cursor: pointer;
    font-size: 1.1rem;
    padding: 5px;
    transition: var(--transition);
}

.search-container button:hover {
    color: var(--color-gold-light);
    transform: scale(1.1);
}

.search-nav-buttons {
    display: flex;
    align-items: center;
    gap: 8px;
    border-right: 1px solid rgba(255, 255, 255, 0.15); /* RTL */
    padding-right: 10px;
    margin-right: 8px;
}

.search-nav-buttons button {
    color: var(--color-white);
    font-size: 0.8rem;
    padding: 2px 6px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 4px;
    border: none;
    cursor: pointer;
}

.search-nav-buttons button:hover {
    background: rgba(255, 255, 255, 0.2);
}

#search-results-count {
    font-size: 0.8rem;
    color: var(--color-gold);
    white-space: nowrap;
    font-weight: 700;
}

.highlight {
    background-color: rgba(243, 194, 70, 0.4);
    color: var(--color-white);
    border-radius: 4px;
    padding: 1px 3px;
    box-shadow: 0 0 5px rgba(243, 194, 70, 0.5);
}

.highlight.current-highlight {
    background-color: rgba(255, 59, 48, 0.6);
    box-shadow: 0 0 8px rgba(255, 59, 48, 0.8);
}

/* =========================================
   Floating AI Chat Widget
   ========================================= */
.chat-widget {
    position: fixed;
    bottom: 30px;
    right: 30px; /* RTL - Standard right float */
    z-index: 1000;
}

.chat-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 0 24px;
    height: 55px;
    border-radius: 30px;
    background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-gold-dark) 100%);
    color: #030812 !important; /* Force high-contrast dark text on gold background */
    font-weight: 700;
    font-size: 1rem;
    cursor: pointer;
    box-shadow: 0 8px 30px rgba(243, 194, 70, 0.4);
    border: 1px solid rgba(255, 255, 255, 0.25);
    position: relative;
    transition: var(--transition);
}

.chat-btn:hover {
    transform: translateY(-3px) scale(1.03);
    box-shadow: 0 12px 35px rgba(243, 194, 70, 0.6);
}

.nav-chat-btn {
    background: var(--color-gold) !important;
    color: #030812 !important;
    padding: 6px 14px !important;
    border-radius: 16px;
    font-weight: 700;
    font-size: 0.88rem !important;
    box-shadow: 0 4px 12px rgba(243, 194, 70, 0.25);
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.nav-chat-btn:hover {
    background: var(--color-gold-light) !important;
    transform: translateY(-1px);
    box-shadow: 0 6px 15px rgba(243, 194, 70, 0.4);
    color: #030812 !important;
}

.chat-box {
    position: absolute;
    bottom: 80px;
    right: 0;
    width: 380px;
    height: 520px;
    background: rgba(3, 8, 18, 0.85);
    backdrop-filter: blur(30px);
    -webkit-backdrop-filter: blur(30px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 24px;
    box-shadow: 0 20px 50px rgba(0,0,0,0.6);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transform: scale(0.9) translateY(20px);
    opacity: 0;
    pointer-events: none;
    transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
    transform-origin: bottom right;
}

.chat-box.active {
    transform: scale(1) translateY(0);
    opacity: 1;
    pointer-events: auto;
}

.chat-header {
    padding: 20px;
    background: rgba(255,255,255,0.02);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.chat-title {
    display: flex;
    align-items: center;
    gap: 12px;
}

.chat-title img {
    height: 45px;
    width: auto;
    filter: drop-shadow(0 2px 5px rgba(0,0,0,0.3));
}

.chat-title h4 {
    margin: 0;
    font-size: 1.15rem;
    color: var(--color-white);
    font-weight: 700;
}

.chat-title span {
    font-size: 0.8rem;
    color: var(--color-gold);
    font-weight: 600;
}

.chat-close {
    background: transparent;
    border: none;
    color: rgba(255,255,255,0.5);
    cursor: pointer;
    font-size: 1.3rem;
    transition: var(--transition);
}

.chat-close:hover {
    color: var(--color-white);
}

.chat-messages {
    flex-grow: 1;
    padding: 20px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

/* Scrollbar inside chat window */
.chat-messages::-webkit-scrollbar {
    width: 5px;
}
.chat-messages::-webkit-scrollbar-track {
    background: transparent;
}
.chat-messages::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
}

.message {
    max-width: 80%;
    padding: 12px 16px;
    border-radius: 16px;
    font-size: 0.95rem;
    line-height: 1.6;
    word-wrap: break-word;
}

.message.bot {
    align-self: flex-start;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.05);
    color: var(--color-text-main);
    border-top-right-radius: 4px; /* RTL bot */
    text-align: justify;
}

.message.user {
    align-self: flex-end;
    background: rgba(243, 194, 70, 0.08);
    border: 1px solid rgba(243, 194, 70, 0.15);
    color: var(--color-gold);
    border-top-left-radius: 4px; /* RTL user */
}

.chat-input-area {
    padding: 15px 20px;
    background: rgba(0,0,0,0.2);
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    display: flex;
    gap: 10px;
}

.chat-input-area input {
    flex-grow: 1;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 20px;
    padding: 10px 15px;
    color: var(--color-white);
    outline: none;
    font-family: 'Cairo', sans-serif;
    font-size: 0.95rem;
    transition: var(--transition);
}

.chat-input-area input:focus {
    border-color: var(--color-gold);
    background: rgba(255, 255, 255, 0.05);
}

.chat-input-area button {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: var(--color-gold);
    color: var(--color-primary-dark);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    transition: var(--transition);
}

.chat-input-area button:hover {
    background: var(--color-gold-light);
    transform: scale(1.05);
}

.typing-dots {
    display: flex;
    gap: 5px;
    align-items: center;
    padding: 8px 12px;
    background: rgba(255, 255, 255, 0.02);
    border-radius: 12px;
    align-self: flex-start;
}

.typing-dots span {
    width: 6px;
    height: 6px;
    background-color: var(--color-text-muted);
    border-radius: 50%;
    animation: typing 1.4s infinite both;
}

.typing-dots span:nth-child(2) {
    animation-delay: .2s;
}

.typing-dots span:nth-child(3) {
    animation-delay: .4s;
}

@keyframes typing {
    0%, 80%, 100% {
        transform: scale(0.6);
        opacity: 0.4;
    }
    40% {
        transform: scale(1);
        opacity: 1;
    }
}

/* =========================================
   Responsive Design
   ========================================= */
@media (max-width: 992px) {
    .nav-container {
        height: 80px;
    }
    
    .logo-img {
        height: 60px;
    }
    
    .logo-text h2 {
        font-size: 1.4rem;
    }
}

@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .chat-box {
        width: calc(100vw - 60px);
        height: 480px;
        right: 0;
    }

    .chat-widget {
        bottom: 20px;
        right: 20px;
        display: block !important; /* Force visible on mobile/tablet */
    }

    .chat-btn {
        padding: 0 18px;
        height: 48px;
        font-size: 0.88rem;
    }

    /* Prevent spacing gaps (fawasel) and center-align issues on mobile */
    p, li, .academic-content p, .bullet-list li, .ordered-list li, .literature-card p, .sidebar-card p {
        text-align: right !important;
        word-spacing: normal !important;
        letter-spacing: normal !important;
    }

    .bullet-list {
        margin-right: 10px;
        padding-right: 0;
    }

    .nav-links {
        position: absolute;
        top: 75px;
        left: 20px;
        right: 20px;
        width: calc(100% - 40px);
        background-color: rgba(3, 8, 18, 0.85);
        backdrop-filter: blur(25px);
        -webkit-backdrop-filter: blur(25px);
        border: 1px solid rgba(255, 255, 255, 0.1);
        border-radius: 18px;
        flex-direction: column;
        align-items: center;
        gap: 5px;
        max-height: 0;
        overflow: hidden;
        transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
        box-shadow: 0 15px 35px rgba(0,0,0,0.5);
        opacity: 0;
        transform: translateY(-10px);
        pointer-events: none;
    }

    .nav-links.active {
        max-height: 480px;
        padding: 20px 0;
        opacity: 1;
        transform: translateY(0);
        pointer-events: auto;
    }

    .nav-links li {
        width: 100%;
        text-align: center;
        padding: 12px 0;
    }

    .nav-links li a::after {
        display: none;
    }

    .hero h1 {
        font-size: 2.8rem;
    }
    
    .hero p {
        font-size: 1.25rem;
    }
    
    .section-title h2 {
        font-size: 2.1rem;
    }
    
    .grid-2-col {
        grid-template-columns: 1fr;
    }
    
    .academic-card {
        padding: 35px 20px;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-thanks h4 {
        margin: 0 auto 20px;
    }
}