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

:root {
    --primary-color: #FF4800;
    --primary-dark: #E03E00;
    --primary-light: #FF6A33;
    --secondary-color: #1a1a2e;
    --text-color: #333;
    --light-text: #fff;
    --bg-light: #f9f9f9;
    --bg-gray: #f0f0f0;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    overflow-x: hidden;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 72, 0, 0.9);
    backdrop-filter: blur(10px);
    z-index: 1000;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.header.scrolled {
    background: rgba(255, 72, 0, 0.95);
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

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

.logo img {
    height: 90px;
}

.logo-text h1 {
    color: var(--light-text);
    font-size: 1.5rem;
    font-weight: 700;
}

.logo-text p {
    color: var(--light-text);
    font-size: 0.8rem;
    opacity: 0.9;
}

.navbar {
    display: flex;
    align-items: center;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-link {
    color: var(--light-text);
    text-decoration: none;
    font-weight: 500;
    font-size: 1rem;
    transition: var(--transition);
    position: relative;
}

.nav-link:hover {
    color: #fff;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--light-text);
    transition: var(--transition);
}

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

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background: var(--light-text);
    margin: 3px 0;
    transition: var(--transition);
}

/* Hero Section */
.hero {
    height: 100vh;
    background: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.6)), 
                url('https://images.unsplash.com/photo-1562774053-701939374585?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=1064&q=80');
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--light-text);
    position: relative;
}

.hero-content {
    z-index: 2;
    max-width: 800px;
    padding: 0 20px;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 10px;
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.5);
}

.hero h2 {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    opacity: 0.9;
}

.cta-button {
    display: inline-block;
    background: var(--primary-color);
    color: var(--light-text);
    padding: 12px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    transition: var(--transition);
    box-shadow: 0 4px 15px rgba(255, 72, 0, 0.4);
}

.cta-button:hover {
    background: var(--primary-dark);
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(255, 72, 0, 0.6);
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(255, 72, 0, 0.2) 0%, rgba(26, 26, 46, 0.7) 100%);
}

/* Section Styles */
section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 50px;
    color: var(--secondary-color);
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--primary-color);
    border-radius: 2px;
}

/* About Section */
.about {
    background: var(--bg-light);
}

.about-content {
    display: flex;
    align-items: center;
    gap: 50px;
}

.about-text {
    flex: 1;
}

.about-text p {
    margin-bottom: 20px;
    font-size: 1.1rem;
}

.stats {
    display: flex;
    justify-content: space-between;
    margin-top: 30px;
}

.stat {
    text-align: center;
}

.stat h3 {
    font-size: 2.5rem;
    color: var(--primary-color);
    font-weight: 700;
}

.stat p {
    font-size: 1rem;
    color: var(--text-color);
}

.about-image {
    flex: 1;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.about-image img {
    width: 100%;
    height: auto;
    transition: var(--transition);
}

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

/* Vision Section */
.vision {
    background: var(--secondary-color);
    color: var(--light-text);
}

.vision .section-title {
    color: var(--light-text);
}

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

.vision-card {
    background: rgba(255, 255, 255, 0.1);
    padding: 30px;
    border-radius: 10px;
    text-align: center;
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

.vision-card:hover {
    transform: translateY(-10px);
    background: rgba(255, 255, 255, 0.15);
}

.vision-icon {
    width: 70px;
    height: 70px;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.vision-icon i {
    font-size: 1.8rem;
    color: var(--light-text);
}

.vision-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
}

.vision-card ul {
    text-align: left;
    list-style: none;
}

.vision-card ul li {
    margin-bottom: 10px;
    position: relative;
    padding-left: 20px;
}

.vision-card ul li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

/* Programs Section */
.programs {
    background: var(--bg-light);
}

.programs-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.program-card {
    background: var(--light-text);
    padding: 30px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    text-align: center;
}

.program-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.program-icon {
    width: 80px;
    height: 80px;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.program-icon i {
    font-size: 2rem;
    color: var(--light-text);
}

.program-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--secondary-color);
}

.program-card p {
    margin-bottom: 20px;
}

.program-card ul {
    list-style: none;
    margin-bottom: 25px;
    text-align: left;
}

.program-card ul li {
    margin-bottom: 8px;
    position: relative;
    padding-left: 20px;
}

.program-card ul li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

.program-button {
    display: inline-block;
    background: var(--primary-color);
    color: var(--light-text);
    padding: 10px 25px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

.program-button:hover {
    background: var(--primary-dark);
}

/* Structure Section */
.structure-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.structure-card {
    background: var(--light-text);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.structure-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.structure-image {
    height: 300px;
    overflow: hidden;
}

.structure-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.structure-card:hover .structure-image img {
    transform: scale(1.1);
}

.structure-info {
    padding: 20px;
    text-align: center;
}

.structure-info h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
    color: var(--secondary-color);
}

.structure-info p {
    color: var(--primary-color);
    font-weight: 500;
}

/* Gallery Section */
.gallery {
    background: var(--bg-light);
}

.gallery-content {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.gallery-item {
    position: relative;
    height: 250px;
    border-radius: 10px;
    overflow: hidden;
    cursor: pointer;
    box-shadow: var(--shadow);
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.gallery-item:hover img {
    transform: scale(1.1);
}

.gallery-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

.gallery-item:hover .gallery-overlay {
    opacity: 1;
}

.gallery-overlay h3 {
    color: var(--light-text);
    font-size: 1.5rem;
    text-align: center;
}

/* Popup Slider */
.popup-slider {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.popup-slider.active {
    opacity: 1;
    visibility: visible;
}

.popup-content {
    position: relative;
    width: 90%;
    max-width: 1000px;
    background: var(--light-text);
    border-radius: 10px;
    overflow: hidden;
}

.close-popup {
    position: absolute;
    top: 15px;
    right: 15px;
    font-size: 2rem;
    color: var(--light-text);
    cursor: pointer;
    z-index: 10;
    background: rgba(0, 0, 0, 0.5);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.slider-container {
    position: relative;
    width: 100%;
    height: 70vh;
}

.slider {
    width: 100%;
    height: 100%;
    position: relative;
}

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: var(--transition);
}

.slide.active {
    opacity: 1;
}

.slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.slide-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    background: rgba(0, 0, 0, 0.7);
    color: var(--light-text);
    padding: 20px;
}

.slide-caption h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
}

.slider-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0, 0, 0, 0.5);
    color: var(--light-text);
    border: none;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1.2rem;
    transition: var(--transition);
    z-index: 10;
}

.slider-btn:hover {
    background: rgba(0, 0, 0, 0.8);
}

.prev-btn {
    left: 20px;
}

.next-btn {
    right: 20px;
}

/* Footer */
.footer {
    background: var(--secondary-color);
    color: var(--light-text);
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.footer-section h3 {
    font-size: 1.3rem;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

.footer-section h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 2px;
    background: var(--primary-color);
}

.footer-section p, .footer-section li {
    margin-bottom: 10px;
    opacity: 0.8;
}

.footer-section i {
    margin-right: 10px;
    color: var(--primary-color);
}

.footer-section ul {
    list-style: none;
}

.footer-section a {
    color: var(--light-text);
    text-decoration: none;
    transition: var(--transition);
}

.footer-section a:hover {
    color: var(--primary-color);
    padding-left: 5px;
}

.social-icons {
    display: flex;
    gap: 15px;
}

.social-icons a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    transition: var(--transition);
}

.social-icons a:hover {
    background: var(--primary-color);
    transform: translateY(-5px);
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0.7;
}

/* Responsive Design */
@media (max-width: 992px) {
    .about-content {
        flex-direction: column;
    }
    
    .hero h1 {
        font-size: 2.8rem;
    }
    
    .hero h2 {
        font-size: 1.8rem;
    }
}

@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 80px;
        right: -100%;
        flex-direction: column;
        background: rgba(255, 72, 0, 0.95);
        width: 100%;
        text-align: center;
        transition: var(--transition);
        padding: 20px 0;
        gap: 0;
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .nav-link {
        display: block;
        padding: 15px 0;
        font-size: 1.1rem;
    }
    
    .hero h1 {
        font-size: 2.2rem;
    }
    
    .hero h2 {
        font-size: 1.5rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .stats {
        flex-direction: column;
        gap: 20px;
    }
    
    .slider-container {
        height: 50vh;
    }
}

@media (max-width: 576px) {
    .hero h1 {
        font-size: 1.8rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .programs-content, .vision-content {
        grid-template-columns: 1fr;
    }
    
    .gallery-content {
        grid-template-columns: 1fr;
    }
}

/* Daftar Dosen */
.lecturers {
    background: var(--bg-light);
}

.lecturers-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.lecturer-category {
    background: var(--light-text);
    padding: 30px;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.lecturer-category h3 {
    color: var(--primary-color);
    margin-bottom: 20px;
    font-size: 1.4rem;
    border-bottom: 2px solid var(--primary-light);
    padding-bottom: 10px;
}

.lecturer-category ul {
    list-style: none;
}

.lecturer-category li {
    padding: 8px 0;
    border-bottom: 1px solid var(--bg-gray);
    position: relative;
    padding-left: 20px;
}

.lecturer-category li:before {
    content: "•";
    color: var(--primary-color);
    position: absolute;
    left: 0;
    font-weight: bold;
}

.lecturer-category li:last-child {
    border-bottom: none;
}

/* Form Kontak */
.contact-form {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.contact-form h4 {
    color: var(--light-text);
    margin-bottom: 15px;
    font-size: 1.2rem;
}

.form-group {
    margin-bottom: 15px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 10px 15px;
    border: none;
    border-radius: 5px;
    background: rgba(255, 255, 255, 0.1);
    color: var(--light-text);
    font-family: 'Poppins', sans-serif;
    transition: var(--transition);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: rgba(255, 255, 255, 0.7);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    background: rgba(255, 255, 255, 0.2);
}

.submit-btn {
    width: 100%;
    background: #25D366;
    color: white;
    border: none;
    padding: 12px;
    border-radius: 5px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-family: 'Poppins', sans-serif;
}

.submit-btn:hover {
    background: #128C7E;
    transform: translateY(-2px);
}

/* Responsive untuk form */
@media (max-width: 768px) {
    .lecturers-content {
        grid-template-columns: 1fr;
    }
}

/* Hero Section untuk Program Studi */
.hero-program {
    height: 60vh;
    background: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.6)), 
                url('https://images.unsplash.com/photo-1523580494863-6f3031224c94?ixlib=rb-4.0.3&auto=format&fit=crop&w=1170&q=80');
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--light-text);
    position: relative;
    margin-top: 80px;
}

/* Program Detail Section */
.program-detail {
    padding: 80px 0;
    background: var(--bg-light);
}

.program-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 40px;
    margin-bottom: 60px;
}

.info-card {
    background: var(--light-text);
    padding: 40px;
    border-radius: 15px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.info-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.info-icon {
    width: 80px;
    height: 80px;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 25px;
}

.info-icon i {
    font-size: 2rem;
    color: var(--light-text);
}

.info-card h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: var(--secondary-color);
}

.info-card ul {
    list-style: none;
    text-align: left;
}

.info-card ul li {
    margin-bottom: 12px;
    padding-left: 25px;
    position: relative;
}

.info-card ul li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

/* Program Goals */
.program-goals {
    margin: 80px 0;
}

.goals-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.goal-item {
    background: var(--light-text);
    padding: 30px;
    border-radius: 10px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.goal-item:hover {
    transform: translateY(-5px);
}

.goal-item i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.goal-item h4 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: var(--secondary-color);
}

/* Strategic Plan */
.strategic-plan {
    margin: 80px 0;
}

.plan-timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.plan-timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--primary-color);
    transform: translateX(-50%);
}

.timeline-item {
    position: relative;
    margin-bottom: 50px;
    display: flex;
    align-items: center;
}

.timeline-item:nth-child(odd) {
    flex-direction: row-reverse;
}

.timeline-year {
    background: var(--primary-color);
    color: var(--light-text);
    padding: 15px 25px;
    border-radius: 30px;
    font-weight: 600;
    font-size: 1.1rem;
    z-index: 2;
    min-width: 120px;
    text-align: center;
}

.timeline-content {
    background: var(--light-text);
    padding: 25px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    margin: 0 30px;
    flex: 1;
    max-width: 300px;
}

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

/* Program Gallery */
.program-gallery {
    margin: 80px 0;
}

/* Back Home Section */
.back-home {
    padding: 40px 0;
    background: var(--secondary-color);
    text-align: center;
}

.back-home .cta-button {
    background: var(--light-text);
    color: var(--secondary-color);
}

.back-home .cta-button:hover {
    background: var(--primary-color);
    color: var(--light-text);
}

/* Responsive Design untuk Program Studi */
@media (max-width: 768px) {
    .hero-program {
        height: 50vh;
        margin-top: 70px;
    }
    
    .program-info {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .info-card {
        padding: 25px;
    }
    
    .goals-content {
        grid-template-columns: 1fr;
    }
    
    .plan-timeline::before {
        left: 30px;
    }
    
    .timeline-item {
        flex-direction: row !important;
        padding-left: 60px;
    }
    
    .timeline-year {
        position: absolute;
        left: 0;
        top: 0;
        min-width: 80px;
        padding: 10px 15px;
    }
    
    .timeline-content {
        margin: 0;
        margin-top: 40px;
        max-width: none;
    }
}

@media (max-width: 576px) {
    .hero-program h1 {
        font-size: 2.2rem;
    }
    
    .hero-program h2 {
        font-size: 1.5rem;
    }
}