* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, sans-serif;
}

body {
    line-height: 1.6;
    background: #f8f9fc;
    color: #333;
}

/* Navbar */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    background: #1e40af;
    color: white;
    position: sticky;
    top: 0;
}

.navbar nav a {
    color: white;
    margin-left: 15px;
    text-decoration: none;
    font-weight: bold;
}

.logo span {
    color: #facc15;
}

/* Hero */
.hero {
    text-align: center;
    padding: 80px 20px;
    background: linear-gradient(to right, #1e40af, #2563eb);
    color: white;
}

.hero button {
    margin-top: 20px;
    padding: 12px 25px;
    border: none;
    background: #facc15;
    font-size: 16px;
    cursor: pointer;
    border-radius: 5px;
}

/* Section */
.section {
    padding: 60px 20px;
    text-align: center;
}

.section.alt {
    background: #eef2ff;
}

/* Cards */
.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-top: 30px;
}

.card {
    background: white;
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

/* Keunggulan */
.keunggulan {
    list-style: none;
    margin-top: 20px;
}

.keunggulan li {
    margin: 10px 0;
    font-size: 18px;
}

/* WhatsApp Button */
.wa-btn {
    display: inline-block;
    margin-top: 20px;
    padding: 12px 25px;
    background: #22c55e;
    color: white;
    text-decoration: none;
    border-radius: 5px;
    font-weight: bold;
}

/* Footer */
footer {
    background: #1e40af;
    color: white;
    text-align: center;
    padding: 15px;
}

/* Responsive */
@media (max-width: 600px) {
    .navbar nav {
        display: none;
    }

    .hero h1 {
        font-size: 28px;
    }
}

/* Logo Universitas */
.logo-univ {
    background: #f8f9fc;
    padding: 30px 20px;
}

.logo-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(80px, 1fr));
    gap: 20px;
    max-width: 900px;
    margin: auto;
    align-items: center;
}


.logo-box {
    width: 90px;
    height: 90px;
    background: white;
    border-radius: 30%;
    padding: 15px;
    box-shadow: 0 8px 18px rgba(0,0,0,0.12);
    display: flex;
    align-items: center;
    justify-content: center;
    animation: float 3s ease-in-out infinite;
}

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

/* ===== Logo Universitas Animasi ===== */
.logo-univ {
    background: #f8f9fc;
    padding: 40px 20px;
    overflow: hidden;
}

.logo-title {
    text-align: center;
    margin-bottom: 25px;
    color: #1e40af;
    font-size: 20px;
    font-weight: bold;
}

.logo-slider {
    width: 100%;
    overflow: hidden;
}

.logo-track {
    display: flex;
    gap: 25px;
    width: max-content;
    animation: scrollLogo 25s linear infinite;
}

/* Pause saat hover / sentuh */
.logo-slider:hover .logo-track {
    animation-play-state: paused;
}

@keyframes scrollLogo {
    from {
        transform: translateX(0);
    }
    to {
        transform: translateX(-50%);
    }
}

.logo-box {
    width: 90px;
    height: 90px;
    background: white;
    border-radius: 30%;
    padding: 15px;
    box-shadow: 0 8px 18px rgba(0,0,0,0.12);
    display: flex;
    align-items: center;
    justify-content: center;

    /* floating animation */
    animation: float 3s ease-in-out infinite;
}

.logo-box img {
    max-width: 60px;
    height: auto;
}

/* Floating efek */
@keyframes float {
    0% { transform: translateY(0); }
    50% { transform: translateY(-6px); }
    100% { transform: translateY(0); }
}

/* ===== Metode Ruang Belajar ===== */
.metode-belajar {
    background: #f8f9fc;
}

.sub-title {
    text-align: center;
    margin-top: 10px;
    color: #555;
}

.metode-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 25px;
    margin-top: 40px;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.metode-card {
    background: white;
    padding: 30px 25px;
    border-radius: 15px;
    box-shadow: 0 6px 15px rgba(0,0,0,0.12);
    text-align: center;
    position: relative;
    transition: transform 0.3s ease;
}

.metode-card:hover {
    transform: translateY(-6px);
}

.metode-card h3 {
    color: #1e40af;
    margin-bottom: 10px;
}


/* Coming Soon */
.coming-soon {
    opacity: 0.6;
}

.badge {
    display: inline-block;
    margin-top: 20px;
    padding: 8px 15px;
    background: #e5e7eb;
    color: #555;
    border-radius: 20px;
    font-size: 14px;
    font-weight: bold;
}

/* Tombol Daftar */
.daftar-btn {
    display: inline-block;
    margin-top: 20px;
    padding: 12px 25px;
    background: #22c55e;
    color: white;
    text-decoration: none;
    border-radius: 30px;
    font-weight: bold;
    transition: background 0.3s ease;
}

.daftar-btn:hover {
    background: #16a34a;
}

/* ===== Kenapa Pilih Kami ===== */
.why-us {
    padding: 70px 20px;
    background: linear-gradient(180deg, #eef2ff, #f8f9fc);
    text-align: center;
}

.why-us h2 {
    color: #1e40af;
    font-size: 32px;
}

.why-desc {
    max-width: 600px;
    margin: 15px auto 50px;
    color: #555;
    font-size: 16px;
}

.why-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 25px;
    max-width: 1000px;
    margin: auto;
}

.why-card {
    background: white;
    padding: 35px 25px;
    border-radius: 20px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.12);
    transition: transform 0.4s ease, box-shadow 0.4s ease;
    position: relative;
}

.why-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 18px 40px rgba(30,64,175,0.25);
}

.why-icon {
    font-size: 40px;
    margin-bottom: 15px;
}

.why-card h3 {
    color: #1e40af;
    margin-bottom: 10px;
    font-size: 20px;
}

.why-card p {
    font-size: 15px;
    color: #555;
}

/* Highlight Card */
.why-card.highlight {
    background: linear-gradient(135deg, #1e40af, #2563eb);
    color: white;
}

.why-card.highlight h3,
.why-card.highlight p {
    color: white;
}

.why-card.highlight .why-icon {
    font-size: 45px;
}

/* ===== Tutor Ruang Sarjana ===== */
.tutor-section {
    padding: 80px 20px;
    background: #ffffff;
    text-align: center;
}

.tutor-section h2 {
    color: #1e40af;
    font-size: 32px;
}

.tutor-desc {
    margin: 15px auto 50px;
    max-width: 600px;
    color: #555;
}

.tutor-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 30px;
    max-width: 1000px;
    margin: auto;
}

.tutor-card {
    background: #f8f9fc;
    padding: 30px 25px;
    border-radius: 20px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.12);
    transition: transform 0.4s ease;
}

.tutor-card:hover {
    transform: translateY(-10px);
}

.tutor-card img {
    width: 120px;
    height: 120px;
    object-fit: cover;
    border-radius: 50%;
    margin-bottom: 15px;
    box-shadow: 0 6px 15px rgba(0,0,0,0.15);
}

.tutor-card h3 {
    color: #1e40af;
    margin-bottom: 5px;
}

.tutor-card span {
    font-size: 14px;
    color: #666;
    display: block;
    margin-bottom: 15px;
}

.tutor-card p {
    font-size: 15px;
    color: #555;
    margin-bottom: 20px;
}

/* Social Media Button */
.social-btn {
    display: flex;
    justify-content: center;
    gap: 15px;
}

.social-btn a {
    padding: 10px 18px;
    border-radius: 30px;
    color: white;
    text-decoration: none;
    font-size: 14px;
    font-weight: bold;
}

.social-btn .ig {
    background: linear-gradient(45deg, #f58529, #dd2a7b, #8134af);
}

.social-btn .fb {
    background: #1877f2;
}

/* ===== Testimoni Ringkas ===== */
.testimoni-section {
    padding: 60px 15px;
    background: linear-gradient(180deg, #f8f9fc, #eef2ff);
    overflow: hidden;
    text-align: center;
}

.testimoni-section h2 {
    font-size: 26px;
    color: #1e40af;
}

.testimoni-desc {
    font-size: 14px;
    color: #555;
    margin-bottom: 30px;
}

.testimoni-slider {
    width: 100%;
    overflow: hidden;
}

.testimoni-track {
    display: flex;
    gap: 16px;
    width: max-content;
    animation: slideTestimoni 35s linear infinite;
}

.testimoni-slider:hover .testimoni-track {
    animation-play-state: paused;
}

@keyframes slideTestimoni {
    from { transform: translateX(0); }
    to { transform: translateX(-50%); }
}

/* Card */
.testimoni-card {
    width: 170px;
    background: #fff;
    padding: 16px 14px;
    border-radius: 16px;
    box-shadow: 0 6px 15px rgba(0,0,0,0.12);
    text-align: center;
}

.testimoni-card img {
    width: 55px;
    height: 55px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 8px;
}

.testimoni-card h3 {
    font-size: 14px;
    color: #1e40af;
    margin-bottom: 2px;
}

.testimoni-card span {
    font-size: 12px;
    color: #666;
}

/* ===== Tombol Lihat Ulasan (Lebih Menarik) ===== */
.lihat-ulasan {
    margin-top: 10px;
    padding: 8px 14px;
    border: none;
    border-radius: 20px;
    background: linear-gradient(135deg, #2563eb, #1e40af);
    color: white;
    font-size: 12px;
    font-weight: bold;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.lihat-ulasan span {
    font-size: 14px;
}

.lihat-ulasan:hover {
    transform: translateY(-2px) scale(1.05);
    box-shadow: 0 6px 15px rgba(37,99,235,0.4);
}

/* ===== Popup Testimoni ===== */
.popup-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.6);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    padding: 20px;
}

.popup-content {
    background: white;
    max-width: 360px;
    width: 100%;
    padding: 25px 20px;
    border-radius: 18px;
    text-align: center;
    position: relative;
    animation: scaleIn 0.3s ease;
}

.popup-content img {
    width: 90px;
    height: 90px;
    object-fit: cover;
    border-radius: 50%;
    margin-bottom: 12px;
}

.popup-content h3 {
    color: #1e40af;
    margin-bottom: 4px;
}

.popup-content span {
    font-size: 13px;
    color: #666;
}

.popup-content p {
    font-size: 14px;
    margin-top: 12px;
    line-height: 1.6;
    color: #444;
}

.close {
    position: absolute;
    top: 12px;
    right: 14px;
    font-size: 22px;
    cursor: pointer;
    color: #666;
}

@keyframes scaleIn {
    from { transform: scale(0.8); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

/* ===== Ulasan Alumni ===== */
.ulasan-alumni {
    background: #f8f9ff;
    text-align: center;
}

.ulasan-desc {
    font-size: 14px;
    color: #555;
    margin-bottom: 25px;
}

.ulasan-form {
    max-width: 420px;
    margin: auto;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.ulasan-form input,
.ulasan-form textarea {
    padding: 12px 14px;
    border-radius: 10px;
    border: 1px solid #ddd;
    font-size: 14px;
    font-family: inherit;
}

.ulasan-form textarea {
    resize: none;
}

.kirim-ulasan {
    background: linear-gradient(135deg, #22c55e, #16a34a);
    color: white;
    padding: 12px;
    border: none;
    border-radius: 25px;
    font-size: 15px;
    font-weight: bold;
    cursor: pointer;
}

.kirim-ulasan:hover {
    opacity: 0.9;
}

.ulasan-note {
    font-size: 12px;
    color: #666;
}

/* ===== Footer ===== */
.footer {
    background: linear-gradient(135deg, #1e3a8a, #1e40af);
    color: #e5e7eb;
    padding: 50px 20px 20px;
}

.footer-container {
    max-width: 1100px;
    margin: auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 30px;
}

.footer-brand h3 {
    font-size: 22px;
    margin-bottom: 10px;
}

.footer-brand span {
    color: #facc15;
}

.footer-brand p {
    font-size: 14px;
    line-height: 1.6;
    color: #dbeafe;
}

.footer-links h4,
.footer-contact h4 {
    margin-bottom: 10px;
    font-size: 16px;
}

.footer-links a {
    display: block;
    color: #dbeafe;
    font-size: 14px;
    margin-bottom: 8px;
    text-decoration: none;
}

.footer-links a:hover {
    color: #facc15;
}

.footer-contact p {
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 12px;
}

.footer-wa {
    display: inline-block;
    background: #22c55e;
    color: white;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 14px;
    text-decoration: none;
    font-weight: bold;
}

.footer-wa:hover {
    background: #16a34a;
}

.footer-bottom {
    text-align: center;
    border-top: 1px solid rgba(255,255,255,0.15);
    margin-top: 30px;
    padding-top: 15px;
    font-size: 13px;
    color: #c7d2fe;
}

/* ===== Developer Credit ===== */
.dev-link {
    color: #facc15;
    font-weight: bold;
    text-decoration: none;
}

.dev-link:hover {
    text-decoration: underline;
    color: #fde047;
}

/* ===== Popup Promosi ===== */
.promo-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.65);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    padding: 20px;
}

.promo-content {
    position: relative;
    max-width: 420px;
    width: 100%;
    background: white;
    border-radius: 18px;
    overflow: hidden;
    animation: popupFade 0.4s ease;
}

.promo-content img {
    width: 100%;
    display: block;
}

/* Tombol Close */
.promo-close {
    position: absolute;
    top: 10px;
    right: 12px;
    background: rgba(0,0,0,0.6);
    color: white;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    font-size: 22px;
    line-height: 32px;
    text-align: center;
    cursor: pointer;
}

@keyframes popupFade {
    from {
        transform: scale(0.85);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

/* ===== Chat Tutor Bubble ===== */
.chat-bubble {
    position: fixed;
    bottom: 25px;
    right: 25px;
    width: 56px;
    height: 56px;
    background: #22c55e;
    color: white;
    font-size: 26px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 8px 20px rgba(0,0,0,0.25);
    z-index: 10001;
    animation: floatChat 2s infinite ease-in-out;
}

.chat-bubble:hover {
    background: #16a34a;
}

/* Balon info */
.chat-info {
    position: fixed;
    bottom: 95px;
    right: 25px;
    background: white;
    padding: 12px 16px;
    border-radius: 14px;
    box-shadow: 0 6px 18px rgba(0,0,0,0.2);
    font-size: 13px;
    display: none;
    z-index: 10001;
}

.chat-info p {
    margin: 0;
    color: #333;
    line-height: 1.4;
}

/* Animasi */
@keyframes floatChat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-6px); }
}