/* Enhanced CSS for Djohri Website - Non-Critical Styles */

/* --- Accessibility Improvements --- */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Enhanced focus styles for better accessibility */
*:focus {
    outline: 3px solid var(--accent-color);
    outline-offset: 2px;
    border-radius: 4px;
}

/* High contrast focus for better visibility */
*:focus-visible {
    outline: 3px solid var(--accent-color);
    outline-offset: 2px;
    box-shadow: 0 0 0 6px rgba(79, 195, 247, 0.3);
}

/* Skip to main content link */
.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--primary-color);
    color: white;
    padding: 8px 16px;
    text-decoration: none;
    border-radius: 4px;
    z-index: 1000;
    transition: top var(--transition-speed);
    font-weight: 500;
}

.skip-link:focus {
    top: 6px;
}

/* --- Enhanced Background Pattern --- */
body::before {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        radial-gradient(circle at 20% 20%, rgba(233, 30, 99, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(79, 195, 247, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(255, 107, 157, 0.02) 0%, transparent 70%);
    z-index: -1;
    will-change: transform;
    animation: floatParticles 25s ease-in-out infinite;
}

/* إضافة طبقة ثانية للخلفية */
body::after {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        linear-gradient(45deg, transparent 30%, rgba(233, 30, 99, 0.01) 50%, transparent 70%),
        linear-gradient(-45deg, transparent 30%, rgba(79, 195, 247, 0.01) 50%, transparent 70%);
    z-index: -1;
    animation: backgroundShift 30s ease-in-out infinite;
}

@keyframes backgroundShift {
    0%, 100% { opacity: 0.3; transform: rotate(0deg); }
    50% { opacity: 0.6; transform: rotate(1deg); }
}

@keyframes floatParticles {
    0%, 100% { transform: translate(0, 0); }
    33% { transform: translate(5px, -5px); }
    66% { transform: translate(-5px, 5px); }
}

/* --- Enhanced Header Styles --- */
header::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='60' height='60' viewBox='0 0 60 60'%3E%3Cpath fill='%23ffffff' fill-opacity='0.05' d='M30 30c0 8.284-6.716 15-15 15s-15-6.716-15-15 6.716-15 15-15 15 6.716 15 15z'/%3E%3C/svg%3E") repeat;
    z-index: 0;
    animation: movePattern 20s linear infinite;
}

@keyframes movePattern {
    0% { transform: translateX(0) translateY(0); }
    100% { transform: translateX(60px) translateY(-60px); }
}

.header-content {
    position: relative;
    z-index: 1;
    padding: 0 2rem;
}

header p {
    font-size: clamp(1.1rem, 2vw, 1.3rem);
    margin-bottom: 1rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    opacity: 0.95;
    animation: fadeInUp 1s ease 0.3s backwards;
    font-weight: 300;
}

header h2 {
    font-size: clamp(1.1rem, 2vw, 1.4rem);
    margin-top: 1.5rem;
    color: rgba(255, 255, 255, 0.9);
    animation: fadeInUp 1.5s ease 0.6s backwards;
    font-weight: 300;
    font-style: italic;
}

.heart-animation {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 2rem;
    animation: heartBeat 2s ease-in-out infinite;
}

@keyframes heartBeat {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.2); }
}

/* --- Enhanced Navigation --- */
.main-nav {
    position: sticky;
    top: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    box-shadow: var(--shadow-light);
    padding: 1rem 0;
    transition: background-color var(--transition-speed);
}

[data-theme="dark"] .main-nav {
    background: rgba(45, 45, 45, 0.95);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.nav-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    display: flex;
    align-items: center;
    transition: transform var(--transition-speed);
}

.nav-logo:hover {
    transform: scale(1.05);
}

.nav-logo i {
    margin-left: 0.5rem;
}

.nav-links {
    display: flex;
    list-style: none;
    align-items: center;
}

.nav-links li {
    margin-right: 1.5rem;
}

.nav-links a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    transition: all var(--transition-speed);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    position: relative;
}

.nav-links a::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: all var(--transition-speed);
    transform: translateX(-50%);
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 80%;
}

.nav-links a:hover {
    color: var(--primary-color);
    background: rgba(233, 30, 99, 0.1);
}

.nav-links a.active {
    background: var(--primary-color);
    color: white;
}

/* Theme toggle button */
.theme-toggle {
    background: none;
    border: none;
    font-size: 1.2rem;
    color: var(--text-color);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: all var(--transition-speed);
    margin-right: 1rem;
}

.theme-toggle:hover {
    background: rgba(233, 30, 99, 0.1);
    color: var(--primary-color);
    transform: scale(1.1);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--primary-color);
    cursor: pointer;
    padding: 0.5rem;
    transition: transform var(--transition-speed);
}

.mobile-menu-btn:hover {
    transform: scale(1.1);
}

/* --- Enhanced Progress Bar --- */
.progress-container {
    width: 100%;
    height: 4px;
    background: rgba(233, 30, 99, 0.1);
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1001;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    width: 0%;
    transition: width 0.1s ease;
    position: relative;
}

.progress-bar::after {
    content: "";
    position: absolute;
    top: 0;
    right: 0;
    width: 20px;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.5));
    animation: progressShine 2s ease-in-out infinite;
}

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

/* --- Enhanced Search Bar --- */
.search-container {
    max-width: 600px;
    margin: 2rem auto;
    position: relative;
    animation: fadeIn 1s ease 0.9s backwards;
}

.search-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.search-bar {
    width: 100%;
    padding: 1.2rem 4.5rem 1.2rem 2.5rem;
    border-radius: 50px;
    border: 2px solid transparent;
    box-shadow: 
        var(--shadow-light),
        0 0 0 1px rgba(233, 30, 99, 0.05),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    font-size: 1.1rem;
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    background: var(--card-bg);
    color: var(--text-color);
    backdrop-filter: blur(10px);
}

.search-bar:focus {
    border-color: var(--primary-color);
    box-shadow: 
        0 8px 30px rgba(233, 30, 99, 0.25),
        0 0 0 3px rgba(233, 30, 99, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
    transform: translateY(-3px) scale(1.01);
}

.search-btn {
    position: absolute;
    left: 1rem;
    background: none;
    border: none;
    color: var(--primary-color);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: all var(--transition-speed);
}

.search-btn:hover {
    background: rgba(233, 30, 99, 0.1);
    transform: scale(1.1);
}

.search-results {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--card-bg);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-medium);
    max-height: 300px;
    overflow-y: auto;
    z-index: 100;
    display: none;
    margin-top: 0.5rem;
}

.search-result-item {
    padding: 1rem;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    cursor: pointer;
    transition: background-color var(--transition-speed);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.search-result-item:hover {
    background: var(--light-bg);
}

.search-result-item:last-child {
    border-bottom: none;
}

.search-category {
    background: var(--primary-color);
    color: white;
    padding: 0.2rem 0.5rem;
    border-radius: 10px;
    font-size: 0.8rem;
    font-weight: 500;
}

/* --- Statistics Section --- */
.stats-section {
    margin: 4rem 0;
    animation: fadeIn 1s ease 0.6s backwards;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.stat-card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 20px;
    text-align: center;
    box-shadow: var(--card-shadow);
    transition: all var(--transition-speed);
    border: 1px solid rgba(233, 30, 99, 0.1);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(233, 30, 99, 0.02) 0%, rgba(79, 195, 247, 0.02) 100%);
    opacity: 0;
    transition: opacity var(--transition-speed);
}

.stat-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(233, 30, 99, 0.15);
}

.stat-card:hover::before {
    opacity: 1;
}

.stat-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    position: relative;
    z-index: 1;
}

.stat-label {
    font-size: 1.1rem;
    color: var(--text-light);
    font-weight: 500;
    position: relative;
    z-index: 1;
}

/* --- Enhanced Main Content Styles --- */
main {
    padding: 4rem 0;
    position: relative;
    z-index: 1;
}

main h2 {
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    margin-bottom: 2rem;
    color: var(--primary-color);
    text-align: center;
    position: relative;
    padding-bottom: 1rem;
    animation: fadeIn 1s ease;
    font-weight: 500;
}

main h2::after {
    content: "✦";
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    font-size: 1.5rem;
    animation: sparkle 2s ease-in-out infinite;
}

@keyframes sparkle {
    0%, 100% { opacity: 1; transform: translateX(-50%) scale(1); }
    50% { opacity: 0.6; transform: translateX(-50%) scale(1.2); }
}

main p {
    font-size: clamp(1rem, 2vw, 1.2rem);
    margin-bottom: 3rem;
    text-align: center;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
    animation: fadeIn 1s ease 0.3s backwards;
    line-height: 1.8;
    color: var(--text-light);
}

/* Enhanced Teacher Image */
.teacher-image {
    width: clamp(180px, 30vw, 220px);
    height: clamp(180px, 30vw, 220px);
    border-radius: 50%;
    border: 6px solid rgba(233, 30, 99, 0.2);
    margin: 0 auto 30px;
    box-shadow: var(--shadow-medium);
    display: block;
    overflow: hidden;
    animation: gentleFloat 4s ease-in-out infinite;
    background: white;
    padding: 8px;
    object-fit: cover;
    object-position: center;
    transition: all var(--transition-speed);
    position: relative;
}

.teacher-image::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: 50%;
    background: linear-gradient(45deg, transparent 30%, rgba(255, 255, 255, 0.3) 50%, transparent 70%);
    opacity: 0;
    transition: opacity var(--transition-speed);
}

.teacher-image:hover {
    transform: scale(1.05) translateY(-8px);
    box-shadow: 0 20px 40px rgba(233, 30, 99, 0.3);
}

.teacher-image:hover::after {
    opacity: 1;
}

@keyframes gentleFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

/* --- Enhanced Topics Grid --- */
.topics-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(320px, 100%), 1fr));
    gap: 2rem;
    margin-top: 4rem;
    animation: fadeIn 1s ease 0.6s backwards;
}

.topic-card {
    background: var(--card-bg);
    border-radius: 24px;
    overflow: hidden;
    box-shadow: 
        var(--card-shadow),
        0 0 0 1px rgba(233, 30, 99, 0.05),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    transition: all 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    height: 100%;
    display: flex;
    flex-direction: column;
    position: relative;
    border: 1px solid rgba(233, 30, 99, 0.08);
    backdrop-filter: blur(10px);
}

.topic-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(233, 30, 99, 0.02) 0%, rgba(79, 195, 247, 0.02) 100%);
    opacity: 0;
    transition: opacity var(--transition-speed);
    z-index: 1;
}

.topic-card:hover::before {
    opacity: 1;
}

.topic-card:hover {
    transform: translateY(-16px) scale(1.03);
    box-shadow: 
        0 25px 50px rgba(233, 30, 99, 0.25),
        0 0 0 1px rgba(233, 30, 99, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
    border-color: rgba(233, 30, 99, 0.15);
}

.topic-header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 2rem 1.5rem;
    font-size: clamp(1.3rem, 3vw, 1.5rem);
    font-weight: 500;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.topic-header h3 {
    margin: 0;
    font-size: inherit;
    font-weight: inherit;
}

.topic-header::before {
    content: "";
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: -100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.8s;
}

.topic-card:hover .topic-header::before {
    left: 100%;
}

.topic-body {
    padding: 2rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    position: relative;
    z-index: 2;
}

.topic-body p {
    flex-grow: 1;
    margin-bottom: 1.5rem;
    text-align: right;
    font-size: clamp(0.95rem, 2vw, 1.05rem);
    line-height: 1.7;
    color: var(--text-light);
    animation: none;
}

.topic-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    gap: 1rem;
}

.difficulty {
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 500;
    color: white;
}

.difficulty.easy {
    background: var(--success-color);
}

.difficulty.medium {
    background: var(--warning-color);
}

.difficulty.hard {
    background: var(--error-color);
}

.duration {
    color: var(--text-light);
    font-size: 0.9rem;
    display: flex;
    align-items: center;
}

.duration::before {
    content: "⏱️";
    margin-left: 0.5rem;
}

.resource-type, .file-count {
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 500;
    background: var(--accent-color);
    color: white;
}

.topic-link {
    display: inline-block;
    background: linear-gradient(135deg, var(--accent-color), var(--accent-hover));
    color: white;
    text-decoration: none;
    padding: 1.2rem 2.5rem;
    border-radius: 50px;
    font-weight: 600;
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    text-align: center;
    position: relative;
    overflow: hidden;
    width: 100%;
    box-shadow: 
        0 6px 20px rgba(79, 195, 247, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
    border: none;
    cursor: pointer;
    font-family: inherit;
    font-size: 1.05rem;
    letter-spacing: 0.5px;
}

.topic-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to right, transparent, rgba(255, 255, 255, 0.4), transparent);
    transform: translateX(-100%);
    transition: transform 0.6s;
}

.topic-link:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: 
        0 12px 30px rgba(79, 195, 247, 0.5),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
    background: linear-gradient(135deg, var(--accent-hover), #1e88e5);
}

.topic-link:hover::before {
    transform: translateX(100%);
}

/* Enhanced Topic Icons */
.topic-icon {
    display: block;
    font-size: clamp(2.5rem, 5vw, 3.2rem);
    text-align: center;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
    animation: iconFloat 4s ease-in-out infinite;
    filter: drop-shadow(0 4px 8px rgba(233, 30, 99, 0.2));
    transition: all 0.3s ease;
}

.topic-card:hover .topic-icon {
    transform: scale(1.1) rotate(5deg);
    filter: drop-shadow(0 6px 12px rgba(233, 30, 99, 0.3));
}

@keyframes iconFloat {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    25% { transform: translateY(-8px) rotate(2deg); }
    50% { transform: translateY(-4px) rotate(-1deg); }
    75% { transform: translateY(-12px) rotate(1deg); }
}

/* --- Enhanced Exercises Section --- */
.exercises-section {
    margin: 6rem 0;
    animation: fadeIn 1s ease 0.9s backwards;
}

.exercises-section h2::after {
    content: "📚";
    position: absolute;
    bottom: -1.5rem;
    left: 50%;
    transform: translateX(-50%);
    font-size: 1.5rem;
    animation: sparkle 2s ease-in-out infinite;
}

.units-container {
    background: var(--card-bg);
    border-radius: 20px;
    box-shadow: var(--shadow-medium);
    overflow: hidden;
    border: 1px solid rgba(233, 30, 99, 0.1);
}

.exercises-header {
    background: var(--primary-color);
    color: white;
    text-align: center;
    padding: 2.5rem;
    position: relative;
}

.exercises-header::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, transparent 30%, rgba(255, 255, 255, 0.1) 50%, transparent 70%);
    animation: headerShine 3s ease-in-out infinite;
}

@keyframes headerShine {
    0%, 100% { transform: translateX(-100%); }
    50% { transform: translateX(100%); }
}

.exercises-header h3 {
    font-size: clamp(1.6rem, 3vw, 2rem);
    margin-bottom: 0.5rem;
    font-weight: 500;
    position: relative;
    z-index: 1;
}

.exercises-header p {
    font-size: clamp(0.95rem, 2vw, 1.1rem);
    opacity: 0.9;
    margin-bottom: 0;
    position: relative;
    z-index: 1;
}

.units-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(300px, 100%), 1fr));
    gap: 1.5rem;
    padding: 3rem;
}

.unit-card {
    background: var(--card-bg);
    border: 2px solid var(--primary-color);
    border-radius: 15px;
    padding: 2rem;
    text-align: center;
    transition: all var(--transition-speed);
    cursor: pointer;
    text-decoration: none;
    color: var(--text-color);
    display: block;
    position: relative;
    overflow: hidden;
}

.unit-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(233, 30, 99, 0.05) 0%, rgba(79, 195, 247, 0.05) 100%);
    z-index: 0;
    transition: opacity var(--transition-speed);
}

.unit-card:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-8px);
    box-shadow: 0 15px 35px rgba(233, 30, 99, 0.3);
}

.unit-card:hover .unit-icon {
    transform: scale(1.1) rotate(5deg);
}

.unit-card:hover .unit-description {
    opacity: 1;
}

.unit-card:hover .pdf-icon {
    color: white;
}

.unit-icon {
    font-size: clamp(2rem, 4vw, 2.5rem);
    margin-bottom: 1.5rem;
    display: block;
    position: relative;
    z-index: 1;
    transition: all var(--transition-speed);
}

.unit-title {
    font-size: clamp(1.1rem, 2.5vw, 1.3rem);
    font-weight: 600;
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
}

.unit-description {
    font-size: clamp(0.85rem, 2vw, 0.95rem);
    opacity: 0.8;
    line-height: 1.5;
    transition: all var(--transition-speed);
    position: relative;
    z-index: 1;
}

.pdf-icon {
    display: inline-block;
    margin-left: 8px;
    font-size: 1.1rem;
    color: var(--primary-color);
    transition: all var(--transition-speed);
}

.exercises-footer {
    text-align: center;
    padding: 1.5rem;
    border-top: 1px solid rgba(0, 0, 0, 0.1);
    color: var(--text-light);
    font-size: 0.9rem;
    background: var(--light-bg);
}

/* --- About Section --- */
.about-section {
    margin: 6rem 0;
    padding: 4rem 0;
    background: linear-gradient(135deg, var(--soft-pink) 0%, var(--warm-white) 100%);
    border-radius: 25px;
    animation: fadeIn 1s ease 1.2s backwards;
}

.about-content {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 2rem;
}

.about-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    align-items: center;
    margin-top: 3rem;
}

.about-text p {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
    color: var(--text-light);
    text-align: right;
}

.achievements {
    margin-top: 2rem;
}

.achievement {
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
    padding: 1rem;
    background: white;
    border-radius: 10px;
    box-shadow: var(--shadow-light);
    transition: transform var(--transition-speed);
}

.achievement:hover {
    transform: translateX(-5px);
}

.achievement i {
    color: var(--primary-color);
    font-size: 1.5rem;
    margin-left: 1rem;
}

.about-image img {
    width: 100%;
    border-radius: 20px;
    box-shadow: var(--shadow-medium);
    transition: transform var(--transition-speed);
}

.about-image img:hover {
    transform: scale(1.05);
}

/* --- Contact Section --- */
.contact-section {
    margin: 6rem 0;
    animation: fadeIn 1s ease 1.5s backwards;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    margin-top: 3rem;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-item {
    display: flex;
    align-items: center;
    padding: 1.5rem;
    background: var(--card-bg);
    border-radius: 15px;
    box-shadow: var(--shadow-light);
    transition: transform var(--transition-speed);
}

.contact-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-medium);
}

.contact-item i {
    font-size: 2rem;
    color: var(--primary-color);
    margin-left: 1.5rem;
}

.contact-item h3 {
    font-size: 1.2rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.contact-item p {
    color: var(--text-light);
    margin: 0;
}

.contact-form {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 20px;
    box-shadow: var(--shadow-medium);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-color);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 2px solid rgba(233, 30, 99, 0.1);
    border-radius: 10px;
    font-size: 1rem;
    transition: border-color var(--transition-speed);
    background: var(--card-bg);
    color: var(--text-color);
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 0 3px rgba(233, 30, 99, 0.1);
}

.submit-btn {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-speed);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(233, 30, 99, 0.3);
}

/* --- Enhanced CTA Section --- */
.cta-section {
    background: linear-gradient(135deg, var(--card-bg) 0%, var(--soft-pink) 100%);
    border-radius: 25px;
    padding: clamp(2.5rem, 5vw, 4rem) clamp(1.5rem, 3vw, 2.5rem);
    text-align: center;
    margin: 5rem auto;
    max-width: 800px;
    box-shadow: var(--shadow-medium);
    border: 1px solid rgba(233, 30, 99, 0.1);
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: "";
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    transform: rotate(30deg);
    animation: ctaShine 8s linear infinite;
}

@keyframes ctaShine {
    0% { transform: translateX(-100%) rotate(30deg); }
    100% { transform: translateX(100%) rotate(30deg); }
}

.cta-section h3 {
    font-size: clamp(1.6rem, 3vw, 2rem);
    color: var(--primary-dark);
    margin-bottom: 1.5rem;
    font-weight: 500;
    position: relative;
}

.cta-section p {
    margin-bottom: 2.5rem;
    font-size: clamp(0.95rem, 2vw, 1.1rem);
    position: relative;
    color: var(--text-light);
}

.cta-btn {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    padding: clamp(1rem, 2vw, 1.2rem) clamp(2rem, 3vw, 2.5rem);
    border-radius: 50px;
    text-decoration: none;
    font-weight: 500;
    transition: all var(--transition-speed);
    font-size: clamp(1rem, 2vw, 1.1rem);
    box-shadow: 0 8px 25px rgba(233, 30, 99, 0.3);
    position: relative;
    overflow: hidden;
    border: none;
    cursor: pointer;
    font-family: inherit;
}

.cta-btn::before {
    content: "";
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: all 0.5s;
}

.cta-btn:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(233, 30, 99, 0.4);
}

.cta-btn:hover::before {
    left: 100%;
}

/* --- Loading Spinner --- */
.loading-spinner {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-speed);
}

.loading-spinner.active {
    opacity: 1;
    visibility: visible;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(233, 30, 99, 0.3);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 1rem;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.spinner-text {
    color: white;
    font-size: 1.1rem;
    font-weight: 500;
}

/* --- Notification --- */
.notification {
    position: fixed;
    top: 100px;
    right: 20px;
    background: var(--success-color);
    color: white;
    padding: 1rem 1.5rem;
    border-radius: 10px;
    box-shadow: var(--shadow-medium);
    z-index: 1000;
    transform: translateX(400px);
    transition: transform var(--transition-speed);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    max-width: 300px;
}

.notification.show {
    transform: translateX(0);
}

.notification.success {
    background: var(--success-color);
}

.notification.warning {
    background: var(--warning-color);
}

.notification.error {
    background: var(--error-color);
}

.notification.info {
    background: var(--info-color);
}

/* --- Back to Top Button --- */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.2rem;
    box-shadow: var(--shadow-medium);
    transition: all var(--transition-speed);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--primary-dark);
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(233, 30, 99, 0.4);
}

/* --- Enhanced Footer --- */
footer {
    background: linear-gradient(135deg, var(--footer-bg), #ad1457);
    color: white;
    padding: 6rem 0 2rem;
    margin-top: 5rem;
    position: relative;
    clip-path: polygon(0 20%, 100% 0, 100% 100%, 0 100%);
}

.footer-content {
    text-align: center;
    position: relative;
    z-index: 1;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.footer-logo {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    margin-bottom: 1.5rem;
    display: inline-block;
    color: white;
    text-decoration: none;
    transition: transform var(--transition-speed);
}

.footer-logo:hover {
    transform: scale(1.05);
}

.footer-links {
    margin: 2rem 0;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.9);
    margin: 0.5rem 1.5rem;
    text-decoration: none;
    font-weight: 500;
    transition: all var(--transition-speed);
    display: flex;
    align-items: center;
    position: relative;
}

.footer-links a::after {
    content: "";
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-color);
    transition: width var(--transition-speed);
}

.footer-links a:hover {
    color: var(--accent-color);
}

.footer-links a:hover::after {
    width: 100%;
}

.footer-links a i {
    margin-left: 0.5rem;
}

.flashing-text {
    font-size: clamp(1.1rem, 2.5vw, 1.4rem);
    font-weight: 400;
    color: rgba(255, 255, 255, 0.95);
    display: inline-block;
    margin-top: 1rem;
    padding: 0.8rem 2rem;
    border-radius: 30px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(5px);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.footer-text {
    margin-top: 2rem;
}

.footer-text p {
    margin: 0.5rem 0;
    font-size: 0.9rem;
    opacity: 0.8;
}

/* Enhanced Social Media Icons */
.social-icons {
    display: flex;
    justify-content: center;
    margin-top: 2rem;
    gap: 1.5rem;
}

.social-icon {
    width: clamp(40px, 5vw, 45px);
    height: clamp(40px, 5vw, 45px);
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-speed);
    color: white;
    text-decoration: none;
    font-size: 1.2rem;
}

.social-icon:hover {
    background: var(--accent-color);
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(79, 195, 247, 0.4);
}

/* --- Mobile Responsive Design --- */
@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 70px;
        right: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: var(--card-bg);
        flex-direction: column;
        justify-content: flex-start;
        padding-top: 2rem;
        transition: right var(--transition-speed);
        box-shadow: var(--shadow-medium);
    }

    .nav-links.active {
        right: 0;
    }

    .nav-links li {
        margin: 1rem 0;
        width: 100%;
        text-align: center;
    }

    .nav-links a {
        display: block;
        padding: 1rem 2rem;
        font-size: 1.1rem;
    }

    .mobile-menu-btn {
        display: block;
    }

    .theme-toggle {
        margin-right: 0.5rem;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }

    .topics-container {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .units-grid {
        grid-template-columns: 1fr;
        padding: 2rem;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .footer-links {
        flex-direction: column;
        gap: 1rem;
    }

    .footer-links a {
        justify-content: center;
        margin: 0;
    }

    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
    }

    .notification {
        right: 10px;
        left: 10px;
        max-width: none;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 1rem;
    }

    header {
        padding: 3rem 0;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .stat-card {
        padding: 1.5rem;
    }

    .topic-body {
        padding: 1.5rem;
    }

    .units-grid {
        padding: 1.5rem;
    }

    .about-section {
        padding: 2rem 0;
    }

    .contact-form {
        padding: 1.5rem;
    }

    .cta-section {
        padding: 2rem 1rem;
    }
}

/* --- Print Styles --- */
@media print {
    .main-nav,
    .progress-container,
    .loading-spinner,
    .notification,
    .back-to-top,
    .social-icons {
        display: none !important;
    }

    body {
        background: white !important;
        color: black !important;
    }

    .topic-card,
    .unit-card,
    .stat-card {
        break-inside: avoid;
        box-shadow: none !important;
        border: 1px solid #ccc !important;
    }
}

/* --- Reduced Motion --- */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    html {
        scroll-behavior: auto;
    }
}