/* --- General Setup & Variables --- */
:root {
    --primary-color: #007BFF; /* Professional Blue */
    --secondary-color: #F0F7FF; /* Light Blue Background */
    --dark-color: #1A202C; /* Dark text for readability */
    --gray-color: #A0AEC0; /* Lighter text */
    --light-gray-color: #F7FAFC;
    --white-color: #FFFFFF;
    --success-color: #28A745; /* Green for success */
    --accent-color: #FFC107; /* Yellow for attention */
    --font-family: 'Poppins', sans-serif;
    --transition-speed: 0.3s;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    line-height: 1.8;
    color: var(--dark-color);
    background-color: var(--white-color);
}

body.mobile-menu-open {
    overflow: hidden;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

/* --- Animated Background & Hero Section --- */
#hero {
    position: relative;
    height: 100vh;
    color: var(--white-color);
    display: flex;
    flex-direction: column;
    background: linear-gradient(-45deg, #003B73, #007BFF, #00A8E8, #48BFE3);
    background-size: 400% 400%;
    animation: gradientBG 15s ease infinite;
}

@keyframes gradientBG {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* --- Header & Navigation --- */
#main-header {
    padding: 20px 0;
    position: fixed;
    width: 100%;
    z-index: 1000;
    transition: background-color var(--transition-speed) ease;
}

#main-header.scrolled {
    background-color: rgba(26, 32, 44, 0.9);
    backdrop-filter: blur(5px);
}

#main-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    color: var(--white-color);
    text-decoration: none;
    font-size: 1.8rem;
    font-weight: 700;
    z-index: 1001; /* To be above the mobile nav background */
}
.logo span {
    color: var(--primary-color);
}
#main-header.scrolled .logo span {
    color: var(--white-color);
}

#main-nav ul {
    list-style: none;
    display: flex;
}

#main-nav ul li {
    margin-left: 30px;
}

#main-nav a {
    color: var(--white-color);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-speed);
}
#main-nav a:hover {
    color: var(--primary-color);
}

.cta-button-header {
    background: var(--primary-color);
    color: var(--white-color);
    padding: 10px 20px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: 600;
    transition: background-color var(--transition-speed);
}
.cta-button-header:hover {
    background-color: var(--success-color);
}

/* --- Mobile Menu --- */
#mobile-menu-toggle {
    display: none; /* Hidden by default */
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
    z-index: 1001;
}

#mobile-menu-toggle .icon-bar {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--white-color);
    margin: 5px 0;
    transition: all 0.3s ease-in-out;
}

/* Animate hamburger to X */
#mobile-menu-toggle.is-active .icon-bar:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}
#mobile-menu-toggle.is-active .icon-bar:nth-child(2) {
    opacity: 0;
}
#mobile-menu-toggle.is-active .icon-bar:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}


/* --- Hero Content --- */
.hero-content {
    flex-grow: 1;
    display: flex;
    align-items: center;
    text-align: center;
}

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-content p {
    font-size: 1.2rem;
    max-width: 600px;
    margin: 0 auto 30px;
}

.cta-button-hero {
    background: var(--white-color);
    color: var(--primary-color);
    padding: 15px 35px;
    border-radius: 50px;
    text-decoration: none;
    font-size: 1.1rem;
    font-weight: 700;
    transition: all var(--transition-speed);
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}
.cta-button-hero:hover {
    transform: translateY(-3px);
    box-shadow: 0 7px 20px rgba(0,0,0,0.25);
}


/* --- General Section Styling --- */
.content-section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 20px;
    font-weight: 600;
}

.section-subtitle {
    text-align: center;
    font-size: 1.1rem;
    color: var(--gray-color);
    max-width: 600px;
    margin: 0 auto 60px;
}

/* --- Why Refinance Section --- */
.calculation-example {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    margin-bottom: 60px;
}
.calc-box {
    background: var(--light-gray-color);
    border-radius: 10px;
    padding: 30px;
    width: 350px;
    text-align: center;
}
.calc-box h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--gray-color);
    margin-bottom: 20px;
    letter-spacing: 1px;
}
.calc-box.after h4 {
    color: var(--primary-color);
}
.calc-box ul {
    list-style: none;
    text-align: left;
    margin-bottom: 20px;
}
.calc-box ul li {
    padding: 10px;
    border-bottom: 1px solid #e2e8f0;
}
.calc-box ul li span {
    float: right;
    font-weight: 600;
}
.calc-box .total {
    font-weight: 600;
    font-size: 1.2rem;
    margin-top: 10px;
    border-top: 2px solid var(--dark-color);
    padding-top: 10px;
}
.arrow-icon {
    font-size: 3rem;
    color: var(--primary-color);
}
.new-payment {
    font-size: 1.2rem;
}
.big-number {
    display: block;
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin: 10px 0;
}
.savings {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--success-color);
    margin-top: 15px;
}

.info-blocks-container {
    display: flex;
    gap: 30px;
    margin-top: 40px;
}
.info-block {
    flex: 1;
    background: var(--secondary-color);
    padding: 30px;
    border-radius: 10px;
}
.info-block h3 {
    margin-bottom: 15px;
    color: var(--primary-color);
}
.info-block ul {
    list-style-position: inside;
    padding-left: 0;
}


/* --- Offers Section --- */
.form-section-bg {
    background-color: var(--light-gray-color);
}
.offers-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}
.offer-card {
    background: var(--white-color);
    border-radius: 10px;
    padding: 30px;
    box-shadow: 0 5px 25px rgba(0, 0, 0, 0.07);
    text-align: center;
    border: 2px solid transparent;
    transition: all var(--transition-speed);
    position: relative;
}
.offer-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
}
.offer-creditor {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 5px;
}
.offer-type {
    color: var(--gray-color);
    margin-bottom: 20px;
}
.offer-details {
    margin-bottom: 30px;
    text-align: left;
}
.offer-details p {
    margin-bottom: 10px;
    border-bottom: 1px solid var(--light-gray-color);
    padding-bottom: 10px;
}
.cta-button-offer {
    background: var(--primary-color);
    color: var(--white-color);
    padding: 12px 30px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: 600;
    display: inline-block;
    transition: background-color var(--transition-speed);
}
.cta-button-offer:hover {
    background: var(--success-color);
}
.best-offer {
    border-color: var(--accent-color);
}
.best-offer-badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--accent-color);
    color: var(--dark-color);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 700;
}


/* --- Form/Calculator Section --- */
.form-container {
    background: var(--white-color);
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 5px 25px rgba(0, 0, 0, 0.1);
    max-width: 800px;
    margin: 0 auto;
}
#loan-form {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}
.form-group {
    display: flex;
    flex-direction: column;
}
.form-group:nth-child(3) {
    grid-column: 1 / span 2;
}
#loan-form label {
    font-weight: 500;
    margin-bottom: 8px;
}
#loan-form input {
    padding: 15px;
    font-size: 1rem;
    border: 1px solid #ccc;
    border-radius: 5px;
    font-family: var(--font-family);
    transition: border-color var(--transition-speed);
}
#loan-form input:focus {
    outline: none;
    border-color: var(--primary-color);
}
.cta-button-form {
    grid-column: 1 / span 2;
    padding: 15px;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--white-color);
    background-color: var(--primary-color);
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color var(--transition-speed);
}
.cta-button-form:hover {
    background-color: var(--success-color);
}

/* --- KKM Explanation Section --- */
.kkm-content {
    background: var(--white-color);
    padding: 40px;
    border-radius: 10px;
    max-width: 800px;
    margin: 0 auto;
}
.kkm-example {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--light-gray-color);
}
.kkm-example h4 {
    color: var(--primary-color);
}


/* --- Testimonials Section --- */
.testimonial-slider {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    overflow: hidden;
    padding: 20px;
}
.testimonial-slide {
    display: none;
}
.testimonial-slide.active {
    display: block;
}
.testimonial-slide p {
    font-size: 1.2rem;
    font-style: italic;
    color: var(--gray-color);
    margin-bottom: 20px;
}
.testimonial-slide h4 {
    font-size: 1rem;
    font-weight: 600;
}
.slider-controls {
    margin-top: 20px;
}
.slider-controls button {
    background: var(--primary-color);
    color: var(--white-color);
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    margin: 0 10px;
    transition: background-color var(--transition-speed);
}
.slider-controls button:hover {
    background: var(--dark-color);
}

/* --- FAQ Section --- */
.faq-container {
    max-width: 800px;
    margin: 0 auto;
}
.faq-item {
    background: var(--white-color);
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    margin-bottom: 10px;
    overflow: hidden;
}
.faq-question {
    padding: 20px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.faq-question::after {
    content: '+';
    font-size: 1.5rem;
    transition: transform var(--transition-speed);
}
.faq-item.active .faq-question::after {
    transform: rotate(45deg);
}
.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease-in-out;
}
.faq-answer p {
    padding: 0 20px 20px;
    color: var(--gray-color);
}

/* --- Contact Section --- */
.contact-section-bg {
    background: var(--secondary-color);
    text-align: center;
}
.contact-info p {
    font-size: 1.2rem;
    margin-bottom: 10px;
}
.contact-info strong {
    color: var(--dark-color);
}

/* --- Footer --- */
#main-footer {
    background: var(--dark-color);
    color: var(--gray-color);
    text-align: center;
    padding: 20px 0;
}

/* --- Scroll Animations --- */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}
.animate-on-scroll.is-visible {
    opacity: 1;
    transform: translateY(0);
}


/* --- Responsive Design --- */
@media (max-width: 992px) {
    .offers-container {
        grid-template-columns: 1fr;
    }
    .info-blocks-container {
        flex-direction: column;
    }
}

/* Updated media query for mobile menu */
@media (max-width: 900px) {
    .cta-button-header {
        display: none;
    }

    #mobile-menu-toggle {
        display: block;
    }

    #main-nav {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background-color: rgba(26, 32, 44, 0.98);
        backdrop-filter: blur(5px);
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        opacity: 0;
        visibility: hidden;
        transition: opacity 0.3s ease, visibility 0.3s ease;
    }

    #main-nav.is-open {
        opacity: 1;
        visibility: visible;
    }

    #main-nav ul {
        flex-direction: column;
        align-items: center;
    }
    
    #main-nav ul li {
        margin: 20px 0;
    }

    #main-nav a {
        font-size: 1.5rem;
    }

    /* Keep the old rules for other elements */
    .calculation-example {
        flex-direction: column;
    }
    .arrow-icon {
        transform: rotate(90deg);
    }

    #loan-form { grid-template-columns: 1fr; }
    #loan-form .form-group:nth-child(3) { grid-column: 1; }
    #loan-form .cta-button-form { grid-column: 1; }

    .section-title { font-size: 2rem; }
}

@media (max-width: 768px) {
    .hero-content h1 { font-size: 2.5rem; }
    .hero-content p { font-size: 1rem; }
}