/* ====== CSS Variables ====== */
:root {
    /* Primary Colors */
    --primary-green: #168055;
    --primary-blue: #2E84B6;
    --green-dark: #0f5c3d;
    --blue-dark: #1e6a9e;
    --green-light: #e8f5f0;
    --blue-light: #e8f0f7;
    
    /* Neutral Colors */
    --text-dark: #333333;
    --text-light: #666666;
    --light-bg: #f8f9fa;
    --white: #ffffff;
    --gray-light: #f5f7fa;
    --gray-border: #e9ecef;
    
    /* Shadows & Effects */
    --shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    --shadow-hover: 0 10px 25px rgba(0, 0, 0, 0.12);
    --shadow-light: 0 2px 10px rgba(0, 0, 0, 0.05);
    
    /* Transitions */
    --transition: all 0.3s ease;
    --transition-slow: all 0.5s ease;
    
    /* Border Radius */
    --border-radius: 10px;
    --border-radius-sm: 6px;
}

/* ====== Base Styles ====== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}


h1, h2, h3, h4, h5, h6 {
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
    line-height: 1.3;
}

.section-padding {
    padding: 80px 0;
}

@media (max-width: 768px) {
    .section-padding {
        padding: 60px 0;
    }
}

/* ====== Top Alert Bar ====== */
.top-alert-bar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: linear-gradient(90deg, var(--primary-green), var(--primary-blue));
    color: var(--white);
    padding: 10px 0;
    z-index: 1040;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    animation: slideDown 0.5s ease-out;
}

@keyframes slideDown {
    from {
        transform: translateY(-100%);
    }
    to {
        transform: translateY(0);
    }
}

.alert-content {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 15px;
}

.alert-icon {
    font-size: 1.2rem;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.1); }
    100% { transform: scale(1); }
}

.alert-text {
    font-weight: 500;
    font-size: 0.95rem;
}

/* .alert-btn {
    background-color: rgba(255, 255, 255, 0.2);
    color: var(--white);
    padding: 5px 15px;
    border-radius: 20px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: var(--transition);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.alert-btn:hover {
    background-color: rgba(255, 255, 255, 0.3);
    color: var(--white);
    transform: translateY(-2px);
} */

@media (max-width: 768px) {
    .alert-content {
        flex-direction: column;
        text-align: center;
        gap: 10px;
    }
}

/* ====== Navigation ====== */
.main-navbar {
    background-color: var(--white);
    box-shadow: var(--shadow);
    padding: 15px 0;
    transition: var(--transition);
    z-index: 1030;
    top: 40px; /* Below alert bar */
}

.main-navbar.scrolled {
    padding: 10px 0;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.logo-container {
    display: flex;
    align-items: center;
}

.hu-logo {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-green), var(--primary-blue));
    color: var(--white);
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 1.5rem;
    margin-right: 15px;
}

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

.logo-university {
    font-weight: 700;
    color: var(--text-dark);
    font-size: 1.1rem;
    line-height: 1.2;
}

.logo-tagline {
    font-size: 0.8rem;
    color: var(--text-light);
}

/* .nav-link {
    font-weight: 500;
    color: var(--text-dark) !important;
    margin: 0 5px;
    padding: 8px 15px !important;
    border-radius: var(--border-radius-sm);
    transition: var(--transition);
    position: relative;
}

.nav-link:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-green), var(--primary-blue));
    transition: var(--transition);
}

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

.nav-link:hover,
.nav-link.active {
    color: var(--primary-green) !important;
} */

.btn-primary {
    background: linear-gradient(90deg, var(--primary-green), var(--primary-blue));
    border: none;
    padding: 10px 25px;
    border-radius: var(--border-radius-sm);
    font-weight: 600;
    color: var(--white);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.btn-primary:before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, var(--green-dark), var(--blue-dark));
    transition: var(--transition);
    z-index: -1;
}

.btn-primary:hover:before {
    left: 0;
}

.btn-primary:hover {
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.btn-outline-light {
    border: 1px solid rgba(255, 255, 255, 0.5);
    padding: 10px 25px;
    border-radius: var(--border-radius-sm);
    font-weight: 600;
    color: var(--white);
    transition: var(--transition);
    background: transparent;
}

.btn-outline-light:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
    border-color: var(--white);
    transform: translateY(-2px);
}

.btn-outline-primary {
    border: 1px solid var(--primary-green);
    padding: 10px 25px;
    border-radius: var(--border-radius-sm);
    font-weight: 600;
    color: var(--primary-green);
    transition: var(--transition);
    background: transparent;
}

.btn-outline-primary:hover {
    background: linear-gradient(90deg, var(--primary-green), var(--primary-blue));
    color: var(--white);
    transform: translateY(-2px);
}

/* ====== Hero Section ====== */
.hero-section {
    position: relative;
    padding: 120px 0 80px;
    color: var(--white);
    background: linear-gradient(135deg, #0a2e1c 0%, #123c26 50%, #1a5d1a 100%);
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.3);
}

.hero-pattern {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 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='0.05'%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");
}

.floating-shapes {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
}

.shape {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    animation: float 15s infinite linear;
}

.shape-1 {
    width: 100px;
    height: 100px;
    top: 10%;
    left: 5%;
    animation-delay: 0s;
}

.shape-2 {
    width: 150px;
    height: 150px;
    bottom: 20%;
    right: 10%;
    animation-delay: -5s;
}

.shape-3 {
    width: 80px;
    height: 80px;
    top: 50%;
    left: 15%;
    animation-delay: -10s;
}

.shape-4 {
    width: 120px;
    height: 120px;
    bottom: 10%;
    left: 20%;
    animation-delay: -7s;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0) rotate(0deg);
    }
    33% {
        transform: translate(30px, 30px) rotate(120deg);
    }
    66% {
        transform: translate(-20px, 40px) rotate(240deg);
    }
}

.hero-content {
    position: relative;
    z-index: 1;
}

.conference-badge {
    display: inline-block;
    background-color: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    color: var(--white);
    padding: 8px 20px;
    border-radius: 30px;
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 30px;
    text-transform: uppercase;
    letter-spacing: 1px;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.2;
}

@media (max-width: 992px) {
    .hero-title {
        font-size: 2.5rem;
    }
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 2rem;
    }
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 25px;
    font-weight: 400;
}

.highlight-text {
    color: #FFD700;
    font-weight: 600;
}

.hero-description {
    margin-bottom: 35px;
}

.hero-description p {
    font-size: 1.1rem;
    opacity: 0.9;
    max-width: 600px;
}

.hero-cta {
    margin-bottom: 40px;
}

.hero-cta .btn {
    margin-right: 15px;
    margin-bottom: 15px;
}

.hero-features {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
}

.feature-item {
    display: flex;
    align-items: center;
    font-size: 0.95rem;
    background: rgba(255, 255, 255, 0.1);
    padding: 10px 15px;
    border-radius: var(--border-radius-sm);
    backdrop-filter: blur(5px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.feature-item i {
    margin-right: 8px;
    color: #FFD700;
}

/* Hero Card */
.hero-card {
    background-color: rgba(255, 255, 255, 0.95);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-hover);
    overflow: hidden;
    position: relative;
    z-index: 1;
    transform: perspective(1000px) rotateY(-5deg);
    transition: var(--transition-slow);
}

.hero-card:hover {
    transform: perspective(1000px) rotateY(0deg);
}

.hero-card .card-header {
    background: linear-gradient(90deg, var(--primary-green), var(--primary-blue));
    color: var(--white);
    padding: 20px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.hero-card .card-header h3 {
    margin: 0;
    font-size: 1.3rem;
    display: flex;
    align-items: center;
}

.hero-card .card-body {
    padding: 25px;
}

.countdown-display-main {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.countdown-item {
    text-align: center;
    min-width: 70px;
}

.countdown-value {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary-green);
    line-height: 1;
    margin-bottom: 5px;
    animation: countdownPulse 1s infinite;
}

@keyframes countdownPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.countdown-label {
    font-size: 0.85rem;
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.countdown-separator {
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary-blue);
    margin: 0 5px;
    padding-bottom: 15px;
}

.countdown-text {
    text-align: center;
    font-size: 0.9rem;
    color: var(--text-light);
    margin-bottom: 10px;
}

.deadline-date {
    text-align: center;
    font-weight: 600;
    color: var(--primary-blue);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.timeline-mini {
    border-top: 1px solid var(--gray-border);
    padding-top: 20px;
}

.timeline-item {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
}

.timeline-date {
    font-weight: 700;
    color: var(--primary-green);
    min-width: 60px;
}

.timeline-content {
    flex: 1;
    padding-left: 15px;
    border-left: 2px solid var(--primary-blue);
}

.timeline-title {
    display: block;
    font-weight: 600;
    color: var(--text-dark);
}

.timeline-desc {
    display: block;
    font-size: 0.85rem;
    color: var(--text-light);
}

.hero-wave {
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
}

.hero-wave svg {
    width: 100%;
    height: 120px;
    fill: var(--white);
}

/* ====== Section Headers ====== */
.section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 50px;
}

.section-title {
    font-size: 2.2rem;
    margin-bottom: 15px;
    color: var(--primary-green);
    position: relative;
    display: inline-block;
}

.section-title:after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-green), var(--primary-blue));
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 0;
}

@media (max-width: 768px) {
    .section-title {
        font-size: 1.8rem;
    }
    .section-subtitle {
        font-size: 1rem;
    }
}

/* ====== CARD STYLES ====== */

/* Card Style 1: Modern Card with Icon */
.info-card.card-style-1 {
    background-color: var(--white);
    border-radius: var(--border-radius);
    padding: 30px;
    box-shadow: var(--shadow);
    height: 100%;
    text-align: center;
    transition: var(--transition);
    border-top: 4px solid var(--primary-green);
    position: relative;
    overflow: hidden;
}

.card-style-1:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-green), var(--primary-blue));
    transform: translateX(-100%);
    transition: transform 0.5s ease;
}

.card-style-1:hover:before {
    transform: translateX(0);
}

.card-style-1:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
}

.card-style-1 .card-icon {
    font-size: 2.5rem;
    color: var(--primary-green);
    margin-bottom: 20px;
    display: inline-block;
    background: var(--green-light);
    width: 70px;
    height: 70px;
    line-height: 70px;
    border-radius: 50%;
    transition: var(--transition);
}

.card-style-1:hover .card-icon {
    background: linear-gradient(135deg, var(--primary-green), var(--primary-blue));
    color: var(--white);
    transform: rotate(360deg);
}

.card-style-1 h3 {
    color: var(--primary-green);
    margin-bottom: 15px;
    font-size: 1.3rem;
}

.card-style-1 p {
    color: var(--text-light);
    margin-bottom: 20px;
}

.card-style-1 .card-footer {
    margin-top: 20px;
}

.card-style-1 .card-link {
    color: var(--primary-blue);
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    transition: var(--transition);
}

.card-style-1 .card-link:hover {
    color: var(--primary-green);
    transform: translateX(5px);
}

/* Card Style 2: Border Top Card */
.info-card.card-style-2 {
    background-color: var(--white);
    border-radius: var(--border-radius);
    padding: 30px;
    box-shadow: var(--shadow);
    height: 100%;
    text-align: center;
    transition: var(--transition);
    border-top: 4px solid var(--primary-blue);
    position: relative;
}

.card-style-2:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: var(--shadow-hover);
}

.card-style-2 .card-icon {
    font-size: 2.5rem;
    color: var(--primary-blue);
    margin-bottom: 20px;
    display: inline-block;
    background: var(--blue-light);
    width: 70px;
    height: 70px;
    line-height: 70px;
    border-radius: 50%;
    transition: var(--transition);
}

.card-style-2:hover .card-icon {
    transform: scale(1.1) rotate(10deg);
}

.card-style-2 h3 {
    color: var(--primary-blue);
    margin-bottom: 15px;
    font-size: 1.3rem;
}

.card-style-2 p {
    color: var(--text-light);
    margin-bottom: 20px;
}

.card-style-2 .card-list {
    list-style: none;
    padding: 0;
    margin: 0;
    text-align: left;
}

.card-style-2 .card-list li {
    margin-bottom: 10px;
    padding-left: 25px;
    position: relative;
}

.card-style-2 .card-list li i {
    color: var(--primary-green);
    position: absolute;
    left: 0;
    top: 4px;
}

/* Card Style 3: Shadow Card */
.info-card.card-style-3 {
    background-color: var(--white);
    border-radius: var(--border-radius);
    padding: 30px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    height: 100%;
    text-align: center;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.card-style-3:hover {
    transform: translateY(-15px) rotateX(5deg);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.card-style-3 .card-icon {
    font-size: 2.5rem;
    color: var(--primary-green);
    margin-bottom: 20px;
    display: inline-block;
    background: linear-gradient(135deg, var(--green-light), var(--blue-light));
    width: 70px;
    height: 70px;
    line-height: 70px;
    border-radius: 50%;
    transition: var(--transition);
}

.card-style-3:hover .card-icon {
    background: linear-gradient(135deg, var(--primary-green), var(--primary-blue));
    color: var(--white);
}

.card-style-3 h3 {
    color: var(--primary-green);
    margin-bottom: 15px;
    font-size: 1.3rem;
}

.card-style-3 p {
    color: var(--text-light);
    margin-bottom: 20px;
}

.card-style-3 .card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
    margin-top: 20px;
}

.card-style-3 .card-tag {
    background: var(--green-light);
    color: var(--primary-green);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    transition: var(--transition);
}

.card-style-3:hover .card-tag {
    background: var(--primary-green);
    color: var(--white);
}

/* Feature Box */
.feature-box {
    background: linear-gradient(135deg, var(--green-light), var(--blue-light));
    border-radius: var(--border-radius);
    padding: 40px;
    display: flex;
    align-items: center;
    border-left: 5px solid var(--primary-green);
    animation: fadeInUp 0.8s ease;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.feature-icon {
    font-size: 3rem;
    color: var(--primary-green);
    margin-right: 30px;
    flex-shrink: 0;
}

.feature-content h3 {
    color: var(--primary-green);
    margin-bottom: 15px;
}

.language-tags {
    display: flex;
    gap: 10px;
    margin-top: 15px;
}

.language-tag {
    background: var(--white);
    color: var(--primary-blue);
    padding: 6px 15px;
    border-radius: 20px;
    font-weight: 600;
    border: 2px solid var(--primary-blue);
    transition: var(--transition);
}

.language-tag:hover {
    background: var(--primary-blue);
    color: var(--white);
    transform: translateY(-3px);
}

/* ====== THEME CARDS ====== */
.themes-section {
    background-color: var(--light-bg);
}

/* Theme Card 1 */
.theme-card-1 {
    background-color: var(--white);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    height: 100%;
    transition: var(--transition);
    border-left: 5px solid var(--primary-green);
}

.theme-card-1:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
}

.theme-card-1 .theme-card-header {
    background-color: var(--primary-green);
    color: var(--white);
    padding: 20px;
    display: flex;
    align-items: center;
}

.theme-card-1 .theme-icon {
    font-size: 1.5rem;
    margin-right: 15px;
}

.theme-card-1 .theme-card-body {
    padding: 25px;
}

.theme-card-1 .theme-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.theme-card-1 .theme-list li {
    margin-bottom: 12px;
    padding-left: 25px;
    position: relative;
    transition: var(--transition);
}

.theme-card-1 .theme-list li:hover {
    transform: translateX(5px);
}

.theme-card-1 .theme-list li i {
    color: var(--primary-green);
    position: absolute;
    left: 0;
    top: 5px;
}

/* Theme Card 2 */
.theme-card-2 {
    background-color: var(--white);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    height: 100%;
    transition: var(--transition);
    border-top: 5px solid var(--primary-blue);
}

.theme-card-2:hover {
    transform: translateY(-10px) rotate(1deg);
    box-shadow: var(--shadow-hover);
}

.theme-card-2 .theme-card-header {
    background-color: var(--primary-blue);
    color: var(--white);
    padding: 20px;
    display: flex;
    align-items: center;
}

.theme-card-2 .theme-icon {
    font-size: 1.5rem;
    margin-right: 15px;
}

.theme-card-2 .theme-card-body {
    padding: 25px;
}

.theme-card-2 .theme-list li {
    margin-bottom: 12px;
    padding-left: 25px;
    position: relative;
}

.theme-card-2 .theme-list li i {
    color: var(--primary-blue);
    position: absolute;
    left: 0;
    top: 5px;
}

/* Theme Card 3 */
.theme-card-3 {
    background-color: var(--white);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    height: 100%;
    transition: var(--transition);
    border: 2px solid var(--primary-green);
}

.theme-card-3:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
    border-color: var(--primary-blue);
}

.theme-card-3 .theme-card-header {
    background-color: var(--white);
    color: var(--primary-green);
    padding: 20px;
    display: flex;
    align-items: center;
    border-bottom: 2px solid var(--green-light);
}

.theme-card-3 .theme-icon {
    font-size: 1.5rem;
    margin-right: 15px;
    color: var(--primary-green);
}

.theme-card-3 .theme-card-body {
    padding: 25px;
}

.theme-card-3 .theme-list li {
    margin-bottom: 12px;
    padding-left: 25px;
    position: relative;
}

.theme-card-3 .theme-list li i {
    color: var(--primary-green);
    position: absolute;
    left: 0;
    top: 5px;
}

/* Theme Card 4 */
.theme-card-4 {
    background: linear-gradient(135deg, #f8f9fa, var(--white));
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    height: 100%;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.theme-card-4:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: linear-gradient(90deg, var(--primary-green), var(--primary-blue));
}

.theme-card-4:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
}

.theme-card-4 .theme-card-header {
    background: linear-gradient(90deg, var(--primary-green), var(--primary-blue));
    color: var(--white);
    padding: 20px;
    display: flex;
    align-items: center;
}

.theme-card-4 .theme-icon {
    font-size: 1.5rem;
    margin-right: 15px;
}

.theme-card-4 .theme-card-body {
    padding: 25px;
}

.theme-card-4 .theme-list li {
    margin-bottom: 12px;
    padding-left: 25px;
    position: relative;
}

.theme-card-4 .theme-list li i {
    color: var(--primary-blue);
    position: absolute;
    left: 0;
    top: 5px;
}

/* Call to Action */
.cta-card {
    background: linear-gradient(135deg, var(--primary-green), var(--primary-blue));
    border-radius: var(--border-radius);
    padding: 40px;
    display: flex;
    align-items: center;
    color: var(--white);
    box-shadow: var(--shadow-hover);
    animation: pulseCta 2s infinite;
}

@keyframes pulseCta {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.01); }
}

.cta-icon {
    font-size: 3rem;
    margin-right: 30px;
    flex-shrink: 0;
}

.cta-content h3 {
    margin-bottom: 10px;
    color: var(--white);
}

.cta-content p {
    margin-bottom: 20px;
    opacity: 0.9;
}

.cta-content .btn {
    background-color: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.3);
}

.cta-content .btn:hover {
    background-color: rgba(255, 255, 255, 0.3);
}

/* ====== TIMELINE ====== */
.dates-section {
    background-color: var(--light-bg);
}

.dates-timeline {
    position: relative;
}

.dates-timeline:before {
    content: '';
    position: absolute;
    left: 30px;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(to bottom, var(--primary-green), var(--primary-blue));
}

.timeline-item {
    position: relative;
    margin-bottom: 30px;
    padding-left: 70px;
    animation: slideInRight 0.6s ease forwards;
    opacity: 0;
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.timeline-item:nth-child(1) { animation-delay: 0.1s; }
.timeline-item:nth-child(2) { animation-delay: 0.2s; }
.timeline-item:nth-child(3) { animation-delay: 0.3s; }
.timeline-item:nth-child(4) { animation-delay: 0.4s; }
.timeline-item:nth-child(5) { animation-delay: 0.5s; }

.timeline-marker {
    position: absolute;
    left: 20px;
    top: 0;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
    border: 3px solid;
    z-index: 2;
}

.timeline-item-1 .timeline-marker {
    border-color: var(--primary-green);
}

.timeline-item-2 .timeline-marker {
    border-color: #ff6b6b;
}

.timeline-item-3 .timeline-marker {
    border-color: var(--primary-blue);
}

.timeline-item-4 .timeline-marker {
    border-color: #6c5ce7;
}

.timeline-item-5 .timeline-marker {
    border-color: #00b894;
}

.marker-icon {
    font-size: 1rem;
    color: var(--text-dark);
}

.timeline-content {
    background-color: var(--white);
    border-radius: var(--border-radius);
    padding: 25px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.timeline-content:hover {
    transform: translateX(10px);
    box-shadow: var(--shadow-hover);
}

.timeline-date {
    font-weight: 700;
    color: var(--primary-green);
    margin-bottom: 10px;
    display: flex;
    align-items: center;
}

.timeline-content h4 {
    color: var(--text-dark);
    margin-bottom: 10px;
    font-size: 1.2rem;
}

.timeline-badge {
    display: inline-block;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-top: 10px;
    background-color: var(--green-light);
    color: var(--primary-green);
}

.badge-deadline {
    background-color: rgba(255, 107, 107, 0.1);
    color: #ff6b6b;
}

.badge-conference {
    background-color: rgba(0, 184, 148, 0.1);
    color: #00b894;
}

/* Sidebar Cards */
.sidebar-card {
    margin-bottom: 25px;
    animation: fadeInUp 0.6s ease forwards;
    opacity: 0;
}

.sidebar-card:nth-child(1) { animation-delay: 0.3s; }
.sidebar-card:nth-child(2) { animation-delay: 0.6s; }

/* Card Style 8 */
.card-style-8 {
    background-color: var(--white);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.card-style-8:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.card-style-8 .card-header {
    background: linear-gradient(90deg, var(--primary-green), var(--primary-blue));
    color: var(--white);
    padding: 20px;
}

.card-style-8 .card-header h4 {
    margin: 0;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
}

.card-style-8 .card-body {
    padding: 30px;
    text-align: center;
}

.countdown-display-vertical {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 20px;
}

.countdown-item-vertical {
    text-align: center;
}

.countdown-value-lg {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary-green);
    line-height: 1;
    margin-bottom: 5px;
    animation: countdownPulse 1s infinite;
}

.countdown-label-lg {
    font-size: 0.8rem;
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.countdown-text-vertical {
    font-size: 0.9rem;
    color: var(--text-light);
    padding-top: 15px;
    border-top: 1px solid var(--gray-border);
}

/* Card Style 9 */
.card-style-9 {
    background-color: var(--white);
    border-radius: var(--border-radius);
    padding: 30px;
    box-shadow: var(--shadow);
    text-align: center;
    transition: var(--transition);
    border: 2px dashed var(--primary-green);
}

.card-style-9:hover {
    transform: translateY(-5px);
    border-style: solid;
    border-color: var(--primary-blue);
    box-shadow: var(--shadow-hover);
}

.card-icon-lg {
    font-size: 3rem;
    color: var(--primary-green);
    margin-bottom: 20px;
    display: inline-block;
}

.card-style-9 h5 {
    color: var(--primary-green);
    margin-bottom: 15px;
    font-size: 1.2rem;
}

/* ====== PRICING CARDS ====== */

/* Card Style 10: Pricing Card */
.pricing-card {
    background-color: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-hover);
    overflow: hidden;
    animation: fadeInUp 0.6s ease;
}

.pricing-header {
    background: linear-gradient(90deg, var(--primary-green), var(--primary-blue));
    color: var(--white);
    padding: 30px;
    text-align: center;
}

.pricing-header h3 {
    margin: 0 0 10px 0;
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.pricing-body {
    padding: 0;
}

.pricing-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 30px;
    border-bottom: 1px solid var(--gray-border);
    transition: var(--transition);
}

.pricing-row:hover {
    background-color: var(--green-light);
    transform: translateX(10px);
}

.pricing-row:last-child {
    border-bottom: none;
}

.pricing-category {
    font-weight: 500;
    color: var(--text-dark);
    flex: 1;
}

.pricing-price {
    font-weight: 700;
    color: var(--primary-green);
    font-size: 1.3rem;
}

/* Card Style 11: Simple Card */
.simple-card {
    background-color: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    animation: fadeInUp 0.6s ease 0.2s forwards;
    opacity: 0;
}

.simple-card-header {
    background-color: var(--primary-blue);
    color: var(--white);
    padding: 20px;
}

.simple-card-header h3 {
    margin: 0;
    font-size: 1.3rem;
    display: flex;
    align-items: center;
}

.simple-card-body {
    padding: 25px;
}

.simple-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.simple-category {
    font-weight: 500;
    color: var(--text-dark);
}

.simple-price {
    font-weight: 700;
    color: var(--primary-blue);
    font-size: 1.3rem;
}

/* Card Style 12: Highlight Card */
.highlight-card {
    background: linear-gradient(135deg, var(--green-light), var(--blue-light));
    border-radius: var(--border-radius);
    padding: 30px;
    display: flex;
    align-items: flex-start;
    animation: fadeInUp 0.6s ease 0.4s forwards;
    opacity: 0;
    border-left: 5px solid var(--primary-green);
}

.highlight-icon {
    font-size: 2rem;
    color: var(--primary-green);
    margin-right: 20px;
    flex-shrink: 0;
}

.highlight-content h5 {
    color: var(--primary-green);
    margin-bottom: 10px;
    font-size: 1.2rem;
}

.highlight-tags {
    display: flex;
    gap: 10px;
    margin-top: 15px;
}

.highlight-tag {
    background-color: var(--white);
    color: var(--primary-green);
    padding: 5px 15px;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.9rem;
    border: 2px solid var(--primary-green);
    transition: var(--transition);
}

.highlight-tag:hover {
    background-color: var(--primary-green);
    color: var(--white);
    transform: translateY(-3px);
}

/* ====== CONTACT CARDS ====== */
.contact-section {
    background-color: var(--light-bg);
}

/* Card Style 13: Contact Card */
.card-style-13 {
    background-color: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    height: 100%;
    overflow: hidden;
    animation: fadeInLeft 0.6s ease;
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.card-style-13 .contact-card-header {
    background: linear-gradient(90deg, var(--primary-green), var(--primary-blue));
    color: var(--white);
    padding: 25px;
}

.card-style-13 .contact-card-header h3 {
    margin: 0;
    font-size: 1.3rem;
    display: flex;
    align-items: center;
}

.card-style-13 .contact-card-body {
    padding: 30px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 25px;
    transition: var(--transition);
    padding: 15px;
    border-radius: var(--border-radius-sm);
}

.contact-item:hover {
    background-color: var(--green-light);
    transform: translateX(5px);
}

.contact-icon {
    font-size: 1.3rem;
    color: var(--primary-green);
    margin-right: 15px;
    margin-top: 5px;
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    background: var(--green-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.contact-details h5 {
    color: var(--primary-green);
    margin-bottom: 5px;
    font-size: 1rem;
}

.social-section {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid var(--gray-border);
}

.social-section h5 {
    color: var(--primary-green);
    margin-bottom: 15px;
}

.social-icons {
    display: flex;
    gap: 10px;
}

.social-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.twitter { background-color: #1DA1F2; color: white; }
.facebook { background-color: #4267B2; color: white; }
.linkedin { background-color: #0077B5; color: white; }
.instagram { 
    background: linear-gradient(45deg, #405DE6, #5851DB, #833AB4, #C13584, #E1306C, #FD1D1D); 
    color: white; 
}

.social-icon:hover {
    transform: translateY(-5px) scale(1.1);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

/* Card Style 14: Submit Card */
.card-style-14 {
    background-color: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    height: 100%;
    overflow: hidden;
    animation: fadeInRight 0.6s ease;
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.card-style-14 .submit-card-header {
    background: linear-gradient(90deg, var(--primary-blue), var(--primary-green));
    color: var(--white);
    padding: 25px;
}

.card-style-14 .submit-card-header h3 {
    margin: 0;
    font-size: 1.3rem;
    display: flex;
    align-items: center;
}

.card-style-14 .submit-card-body {
    padding: 30px;
}

.submit-actions {
    margin-bottom: 20px;
}

.submit-info {
    background-color: var(--blue-light);
    border-radius: var(--border-radius-sm);
    padding: 15px;
    display: flex;
    align-items: flex-start;
}

.submit-info i {
    color: var(--primary-blue);
    margin-right: 10px;
    margin-top: 3px;
}

.submit-info p {
    margin: 0;
    font-size: 0.9rem;
    color: var(--text-dark);
}

/* ====== Footer ====== */
.footer {
    background: linear-gradient(135deg, #1a2b3c, #2c3e50);
    color: var(--white);
    padding: 60px 0 30px;
}

.footer-brand {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

.footer-logo {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-green), var(--primary-blue));
    color: var(--white);
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 1.5rem;
    margin-right: 15px;
}

.footer-brand h3 {
    font-size: 1.2rem;
    margin-bottom: 5px;
    color: var(--white);
}

.footer-info {
    font-size: 0.9rem;
    opacity: 0.8;
    margin-bottom: 0;
}

.footer-title {
    font-size: 1.2rem;
    margin-bottom: 20px;
    color: var(--white);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition);
    display: inline-block;
}

.footer-links a:hover {
    color: var(--white);
    transform: translateX(5px);
}

.footer-contact p {
    margin-bottom: 15px;
    display: flex;
    align-items: flex-start;
    color: rgba(255, 255, 255, 0.8);
}

.footer-contact i {
    margin-top: 5px;
    margin-right: 10px;
    color: var(--primary-green);
}

.footer-divider {
    border-color: rgba(255, 255, 255, 0.1);
    margin: 40px 0 30px;
}

.footer-bottom {
    font-size: 0.9rem;
    opacity: 0.8;
}

/* ====== Back to Top Button ====== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-green), var(--primary-blue));
    color: var(--white);
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 1000;
    box-shadow: var(--shadow);
}

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

.back-to-top:hover {
    transform: translateY(-5px) scale(1.1);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
}

/* ====== Responsive Design ====== */
@media (max-width: 1200px) {
    .hero-title {
        font-size: 2.5rem;
    }
    .countdown-value-lg {
        font-size: 2rem;
    }
}

@media (max-width: 992px) {
    /* body {
        padding-top: 110px;
    } */
    .hero-section {
        padding: 100px 0 60px;
    }
    .hero-title {
        font-size: 2.2rem;
    }
    .hero-subtitle {
        font-size: 1.3rem;
    }
    .hero-card {
        margin-top: 40px;
        transform: none;
    }
    .hero-card:hover {
        transform: translateY(-5px);
    }
    .feature-box {
        flex-direction: column;
        text-align: center;
    }
    .feature-icon {
        margin-right: 0;
        margin-bottom: 20px;
    }
    .dates-timeline:before {
        left: 20px;
    }
    .timeline-item {
        padding-left: 60px;
    }
    .timeline-marker {
        left: 10px;
        width: 35px;
        height: 35px;
    }
}

@media (max-width: 768px) {
    /* body {
        padding-top: 100px;
    } */
    .top-alert-bar {
        padding: 8px 0;
    }
    .alert-text {
        font-size: 0.85rem;
        text-align: center;
    }
    .main-navbar {
        padding: 10px 0;
    }
    .nav-link {
        padding: 10px 0 !important;
        margin: 0;
    }
    .hero-title {
        font-size: 1.8rem;
    }
    .hero-subtitle {
        font-size: 1.1rem;
    }
    .hero-cta .btn {
        display: block;
        width: 100%;
        margin-bottom: 15px;
    }
    .hero-features {
        flex-direction: column;
        gap: 15px;
    }
    .countdown-display-main {
        flex-wrap: wrap;
        gap: 10px;
    }
    .countdown-item {
        min-width: 30%;
    }
    .countdown-separator {
        display: none;
    }
    .section-title {
        font-size: 1.8rem;
    }
    .info-card, .theme-card {
        margin-bottom: 25px;
    }
    .pricing-row {
        flex-direction: column;
        align-items: flex-start;
    }
    .pricing-price {
        margin-top: 10px;
    }
    .contact-card,
    .submit-card {
        margin-bottom: 30px;
    }
    .footer {
        padding: 40px 0 25px;
        text-align: center;
    }
    .footer-brand {
        flex-direction: column;
        text-align: center;
    }
    .footer-logo {
        margin-right: 0;
        margin-bottom: 15px;
    }
    .footer-links {
        align-items: center;
    }
    .footer-contact p {
        justify-content: center;
    }
    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
    }
}

@media (max-width: 576px) {
    .hero-title {
        font-size: 1.6rem;
    }
    .section-title {
        font-size: 1.6rem;
    }
    .info-card, .theme-card {
        padding: 25px 20px;
    }
    .theme-card-header,
    .theme-card-body {
        padding: 20px;
    }
    .countdown-value {
        font-size: 2rem;
    }
    .countdown-value-lg {
        font-size: 1.8rem;
    }
}