/* ========================================
   MODERN COMPONENTS LIBRARY
   E-Library Institutional Website
   ======================================== */

/* ========================================
   NAVIGATION - Glassmorphic Sticky Header
   ======================================== */
.navbar {
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(100, 116, 139, 0.2);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
    transition: all var(--transition-base);
}

.navbar.scrolled {
    background: rgba(2, 6, 23, 0.98);
    box-shadow: var(--shadow-lg);
}

.navbar-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: var(--space-4) var(--container-padding);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    color: var(--color-white);
}

.navbar-brand img {
    height: 40px;
    width: auto;
}

.navbar-menu {
    display: flex;
    align-items: center;
    gap: var(--space-6);
    list-style: none;
}

.navbar-link {
    position: relative;
    font-weight: var(--font-medium);
    color: var(--color-gray-lighter);
    padding: var(--space-2) var(--space-3);
    transition: color var(--transition-base);
}

.navbar-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transform: translateX(-50%);
    transition: width var(--transition-base);
}

.navbar-link:hover {
    color: var(--color-secondary);
}

.navbar-link:hover::after {
    width: 100%;
}

.navbar-link.active {
    color: var(--color-secondary);
    font-weight: var(--font-semibold);
}

.navbar-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-2);
}

.navbar-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background: var(--color-white);
    margin: 5px 0;
    transition: all var(--transition-base);
    border-radius: var(--radius-full);
}

@media (max-width: 768px) {
    .navbar-menu {
        position: fixed;
        top: 72px;
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: calc(100vh - 72px);
        background: var(--color-primary-light);
        flex-direction: column;
        align-items: flex-start;
        padding: var(--space-6);
        box-shadow: var(--shadow-2xl);
        transition: right var(--transition-slow);
    }

    .navbar-menu.active {
        right: 0;
    }

    .navbar-toggle {
        display: block;
    }

    .navbar-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(6px, 6px);
    }

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

    .navbar-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(6px, -6px);
    }
}

/* ========================================
   HERO SECTION - Institutional Banner
   ======================================== */
.hero {
    position: relative;
    min-height: 60vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #020617 0%, #0f172a 50%, #1e293b 100%);
    overflow: hidden;
    padding: var(--space-12) 0;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(circle at 20% 30%, rgba(20, 184, 166, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(212, 175, 55, 0.08) 0%, transparent 50%),
        url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.02'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    z-index: var(--z-base);
    opacity: 0.6;
}

/* .hero-content {
    position: relative;
    z-index: calc(var(--z-base) + 1);
    max-width: 900px;
    display: flex;
    align-items: center;
    gap: var(--space-8);
} */

/* .hero-logo {
    flex-shrink: 0;
    width: 400px;
    height: 100px;
    background: rgba(255, 255, 255, 0.95);
    border-radius: var(--radius-2xl);
    padding: var(--space-5);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeInLeft 0.8s var(--ease-out) forwards;
} */

.hero-logo {
    flex-shrink: 0;
    width: 450px;
    height: 120px;
    background: rgba(255, 255, 255, 0.95);
    border-radius: var(--radius-2xl);
    padding: var(--space-4);   /* Slightly more padding */
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeInLeft 0.8s var(--ease-out) forwards;
}

.hero-logo img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.hero-logo img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}
.hero-content {
    position: relative;
    z-index: calc(var(--z-base) + 1);
    max-width: 1100px;        /* Increased from 900px */
    display: flex;
    align-items: center;
    gap: var(--space-10);     /* Increased from var(--space-8) */
}

.hero-text {
    flex: 1;
    min-width: 0;             /* Add this to prevent text overflow */
}

.hero-title {
    font-size: var(--text-4xl);
    color: var(--color-white);
    margin-bottom: var(--space-4);
    animation: fadeInUp 0.8s var(--ease-out) forwards;
    font-weight: var(--font-extrabold);
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    line-height: 1.2;         /* Add better line height */
}

.hero-subtitle {
    font-size: var(--text-lg);
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: var(--space-8);  /* Increased from var(--space-6) */
    line-height: var(--leading-relaxed);
    animation: fadeInUp 1s var(--ease-out) 0.2s forwards;
    opacity: 0;
}

.hero-cta {
    display: flex;
    gap: var(--space-4);
    flex-wrap: wrap;
    animation: fadeInUp 1.2s var(--ease-out) 0.4s forwards;
    opacity: 0;
    align-items: center;      /* Add this for better button alignment */
}

.hero-decoration {
    position: absolute;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.2;
    animation: float 20s ease-in-out infinite;
}

.hero-decoration:nth-child(1) {
    top: -10%;
    right: -5%;
    background: var(--color-secondary);
}

.hero-decoration:nth-child(2) {
    bottom: -10%;
    left: -5%;
    background: var(--color-accent);
    animation-delay: -10s;
}

@media (max-width: 768px) {
    .hero {
        min-height: auto;
        padding: var(--space-10) 0;
    }

    .hero-content {
        flex-direction: column;
        text-align: center;
        gap: var(--space-6);
    }

    .hero-logo {
        width: 320px;          
        height: 90px;          
    }

    .hero-title {
        font-size: var(--text-2xl);
    }

    .hero-subtitle {
        font-size: var(--text-base);
    }

    .hero-cta {
        flex-direction: column;
        width: 100%;
    }

    .hero-cta .btn {
        width: 100%;
    }
}

/* ========================================
   BUTTONS
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-family: var(--font-primary);
    font-size: var(--text-base);
    font-weight: var(--font-semibold);
    text-align: center;
    text-decoration: none;
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

/* Primary Button */
.btn-primary {
    background: var(--color-secondary);
    color: var(--color-dark);
    box-shadow: 0 4px 14px 0 rgba(20, 184, 166, 0.4);
}

.btn-primary:hover {
    background: var(--color-secondary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px 0 rgba(20, 184, 166, 0.6);
}

/* Secondary Button */
.btn-secondary {
    background: var(--color-accent);
    color: var(--color-dark);
    box-shadow: 0 4px 14px 0 rgba(212, 175, 55, 0.4);
}

.btn-secondary:hover {
    background: var(--color-accent-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px 0 rgba(212, 175, 55, 0.6);
}

/* Outline Button */
.btn-outline {
    background: transparent;
    border: 2px solid var(--color-secondary);
    color: var(--color-secondary);
}

.btn-outline:hover {
    background: var(--color-secondary);
    color: var(--color-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 14px 0 rgba(20, 184, 166, 0.4);
}

/* Ghost Button */
.btn-ghost {
    background: transparent;
    color: var(--color-white);
    border: 2px solid rgba(255, 255, 255, 0.4);
}

.btn-ghost:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.6);
    transform: translateY(-1px);
}

/* Button Sizes */
.btn-sm {
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-sm);
}

.btn-lg {
    padding: var(--space-4) var(--space-8);
    font-size: var(--text-lg);
}

/* ========================================
   CARDS
   ======================================== */
.card {
    background: var(--color-primary-light);
    border-radius: var(--radius-xl);
    padding: var(--space-7);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--color-primary-lighter);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-base);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-2xl);
    border-color: var(--color-secondary);
}

.card:hover::before {
    transform: scaleX(1);
}

/* Card with Icon */
.card-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: var(--radius-xl);
    margin-bottom: var(--space-4);
    transition: transform var(--transition-base);
}

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

.card-icon img,
.card-icon svg {
    width: 30px;
    height: 30px;
    color: var(--color-white);
}

.card-title {
    font-size: var(--text-xl);
    font-weight: var(--font-semibold);
    color: var(--color-white);
    margin-bottom: var(--space-3);
}

.card-description {
    font-size: var(--text-sm);
    color: var(--color-gray-light);
    line-height: var(--leading-relaxed);
}

/* Useful Tools Cards */
.tools-section .grid {
    gap: var(--space-5);
}

.tools-section .card {
    padding: var(--space-5);
}

.tools-section .card:hover {
    transform: translateY(-2px);
}

.tools-section .card-icon {
    width: 52px;
    height: 52px;
    margin-bottom: var(--space-3);
    background: rgba(255, 255, 255, 0.95);
    border: 1px solid var(--color-primary-lighter);
}

.tools-section .card-icon img,
.tools-section .card-icon svg {
    width: 32px;
    height: 32px;
}

.tools-section .card-icon img {
    object-fit: contain;
    display: block;
}

.tools-section .card:hover .card-icon {
    transform: none;
}

.tools-section .card-icon i {
    width: 26px !important;
    height: 26px !important;
}

.tools-section .card-title {
    font-size: var(--text-lg);
    margin-bottom: var(--space-2);
}

.tools-section .card-description {
    font-size: var(--text-xs);
    line-height: var(--leading-normal);
}

.tools-section .btn {
    margin-top: var(--space-3) !important;
}

.new-additions-section .new-additions-carousel {
    position: relative;
}

.new-additions-section .new-additions-track {
    display: flex;
    gap: var(--space-5);
    overflow-x: auto;
    padding: var(--space-2) var(--space-12);
    align-items: stretch;
    scroll-snap-type: x mandatory;
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
}

.new-additions-section .new-additions-track::-webkit-scrollbar {
    height: 8px;
}

.new-additions-section .new-additions-track::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.18);
    border-radius: var(--radius-full);
}

.new-additions-section .new-additions-track::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.06);
    border-radius: var(--radius-full);
}

.new-additions-section .new-addition-item {
    flex: 0 0 calc((100% - (var(--space-5) * 3)) / 4);
    scroll-snap-align: start;
    background: var(--color-primary-light);
    border: 1px solid var(--color-primary-lighter);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
}

.new-additions-section .new-addition-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-2xl);
    border-color: var(--color-secondary);
}

.new-additions-section .new-addition-item img {
    width: 100%;
    height: auto;
    aspect-ratio: 3 / 4;
    display: block;
    object-fit: contain;
    background: rgba(255, 255, 255, 0.95);
    padding: var(--space-2);
}

.new-additions-section .new-additions-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 44px;
    height: 44px;
    border-radius: var(--radius-full);
    border: 1px solid var(--color-primary-lighter);
    background: rgba(15, 23, 42, 0.82);
    color: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 2;
    transition: transform var(--transition-base), background var(--transition-base), border-color var(--transition-base);
    backdrop-filter: blur(8px);
}

.new-additions-section .new-additions-nav-icon {
    font-size: 22px;
    line-height: 1;
    font-weight: 800;
    color: var(--color-white);
    text-shadow: 0 1px 10px rgba(0, 0, 0, 0.6);
    display: inline-block;
}

.new-additions-section .new-additions-nav:hover {
    background: rgba(15, 23, 42, 0.9);
    border-color: var(--color-secondary);
    transform: translateY(-50%) scale(1.06);
}

.new-additions-section .new-additions-prev {
    left: 0;
}

.new-additions-section .new-additions-next {
    right: 0;
}

@media (max-width: 1024px) {
    .new-additions-section .new-addition-item {
        flex-basis: calc((100% - (var(--space-5) * 2)) / 3);
    }
}

@media (max-width: 768px) {
    .new-additions-section .new-addition-item {
        flex-basis: calc((100% - var(--space-5)) / 2);
    }
    .new-additions-section .new-additions-track {
        padding: var(--space-2) var(--space-10);
    }
}

@media (max-width: 480px) {
    .new-additions-section .new-addition-item {
        flex-basis: 85%;
    }
    .new-additions-section .new-additions-track {
        padding: var(--space-2) var(--space-9);
    }
}

/* Resource Card */
.resource-card {
    background: var(--color-primary-light);
    border: 2px solid var(--color-primary-lighter);
    text-align: center;
    padding: var(--space-6);
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
}

.resource-card:hover {
    border-color: var(--color-secondary);
    transform: translateY(-6px);
    box-shadow: var(--shadow-2xl);
    background: var(--color-primary-lighter);
}

.resource-icon {
    width: 140px;
    height: 90px;
    margin: 0 auto var(--space-4);
    background: rgba(255, 255, 255, 0.95);
    border: 2px solid var(--color-primary-lighter);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-2);
    box-shadow: var(--shadow-primary);
    transition: all var(--transition-base);
    overflow: hidden;
}

.resource-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}

.resource-icon i {
    color: var(--color-primary) !important;
}

.resource-card:hover .resource-icon {
    transform: scale(1.1);
    box-shadow: 0 15px 50px -10px rgba(99, 102, 241, 0.5);
}

/* ========================================
   GRID SYSTEM
   ======================================== */
.grid {
    display: grid;
    gap: var(--grid-gap);
}

.grid-cols-1 {
    grid-template-columns: repeat(1, 1fr);
}

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

.grid-cols-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-cols-4 {
    grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 1024px) {
    .grid-cols-4 {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {

    .grid-cols-3,
    .grid-cols-4 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {

    .grid-cols-2,
    .grid-cols-3,
    .grid-cols-4 {
        grid-template-columns: repeat(1, 1fr);
    }
}

/* ========================================
   SECTION HEADERS
   ======================================== */
.section-header {
    text-align: center;
    margin-bottom: var(--space-12);
}

.section-badge {
    display: inline-block;
    padding: var(--space-2) var(--space-5);
    background: var(--color-secondary);
    color: var(--color-dark);
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    border-radius: var(--radius-full);
    margin-bottom: var(--space-5);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.section-title {
    font-size: var(--text-4xl);
    color: var(--color-white);
    margin-bottom: var(--space-4);
}

.section-subtitle {
    font-size: var(--text-lg);
    color: var(--color-gray-light);
    max-width: 600px;
    margin: 0 auto;
    line-height: var(--leading-relaxed);
}

/* ========================================
   FEATURED BANNER
   ======================================== */
.featured-banner {
    background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
    border: 1px solid var(--color-primary-lighter);
    border-radius: var(--radius-2xl);
    padding: var(--space-12);
    color: var(--color-white);
    text-align: center;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-2xl);
}

.featured-banner::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(20, 184, 166, 0.15) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 15s ease-in-out infinite;
}

.featured-badge {
    display: inline-block;
    padding: var(--space-2) var(--space-4);
    background: var(--color-secondary);
    color: var(--color-dark);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-full);
    font-weight: var(--font-semibold);
    margin-bottom: var(--space-4);
}

/* ========================================
   FOOTER
   ======================================== */
.footer {
    background: var(--gradient-dark);
    color: var(--color-gray-light);
    padding: var(--space-16) 0 var(--space-8);
    border-top: 1px solid var(--color-primary-lighter);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-8);
    margin-bottom: var(--space-8);
}

.footer-section h3 {
    color: var(--color-white);
    font-size: var(--text-lg);
    margin-bottom: var(--space-4);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--space-3);
}

.footer-links a {
    color: var(--color-gray-light);
    transition: color var(--transition-base);
}

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

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--space-6);
    text-align: center;
    color: var(--color-gray-light);
}

/* ========================================
   LOADING & SKELETON
   ======================================== */
.loading {
    position: relative;
    overflow: hidden;
}

.loading::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.5), transparent);
    animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
    to {
        left: 100%;
    }
}

/* ========================================
   SCROLL PROGRESS BAR
   ======================================== */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0;
    height: 4px;
    background: var(--gradient-primary);
    z-index: var(--z-fixed);
    transition: width 0.1s linear;
}

/* ========================================
   BACK TO TOP BUTTON
   ======================================== */
.back-to-top {
    position: fixed;
    bottom: var(--space-6);
    right: var(--space-6);
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    color: var(--color-white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-xl);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: var(--z-fixed);
}

.back-to-top svg {
    width: 24px;
    height: 24px;
    display: block;
}

.back-to-top svg path {
    stroke: var(--color-white);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-2xl);
}