/* Universal Styles & Body */
html {
    scroll-behavior: smooth; /* For smooth scrolling to sections */
}

body {
    font-family: 'Inter', sans-serif;
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    background-color: #f8faff; /* Lighter background for the entire page to make card stand out */
    color: #333; /* Darker text for readability */
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Helper Class - Changed for modal compatibility */
.hidden {
    display: none; /* Removed !important here for modal to override */
}

/* --- Header / Navbar --- */
.navbar {
    background-color: #ffffff;
    padding: 20px 0;
    border-bottom: 1px solid #f0f0f0;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.03);
}

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

.navbar .logo {
    font-size: 24px;
    font-weight: 700;
    color: #333;
}

.navbar .logo sup {
    font-size: 0.5em;
    vertical-align: super;
    margin-left: 2px;
    color: #666;
}

.navbar nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    gap: 30px;
}

.navbar nav ul li a {
    text-decoration: none;
    color: #555;
    font-weight: 500;
    transition: color 0.3s ease;
}

.navbar nav ul li a:hover {
    color: #000;
}

.try-now-btn {
    background-color: #000;
    color: #fff;
    padding: 10px 20px;
    border: none;
    border-radius: 25px; /* Pill shape */
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.try-now-btn:hover {
    background-color: #333;
}

/* --- Hero Section --- */
.hero-section {
    text-align: center;
    padding: 120px 20px;
    background-color: #ffffff;
    background: linear-gradient(180deg, #ffffff 0%, #f8faff 100%); /* Subtle gradient */
    border-bottom: 1px solid #f0f0f0;
}

/* SVG icon in hero section */
.hero-svg-icon {
    width: 150px; /* Adjust size as needed */
    height: auto;
    margin: 0 auto 20px auto; /* Center and provide bottom margin */
}

.hero-svg-icon svg {
    width: 100%;
    height: auto;
    fill: #333; /* Dark color for light background */
}


.hero-section h1 {
    font-size: 3.5em; /* Larger title */
    font-weight: 700;
    color: #333;
    margin-bottom: 10px;
    line-height: 1.1;
}

.hero-section .tagline {
    font-size: 1.5em;
    color: #666;
    margin-bottom: 40px;
}

.hero-buttons {
    display: flex;
    justify-content: center;
    gap: 15px;
}

.primary-btn {
    background-color: #000;
    color: #fff;
    padding: 12px 28px;
    border: none;
    border-radius: 25px;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.2s ease;
}

.primary-btn:hover {
    background-color: #333;
    transform: translateY(-2px);
}

.secondary-btn {
    background-color: transparent;
    color: #333;
    padding: 12px 28px;
    border: 1px solid #ddd;
    border-radius: 25px;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s ease, color 0.3s ease, transform 0.2s ease;
}

.secondary-btn:hover {
    background-color: #f0f0f0;
    color: #000;
    transform: translateY(-2px);
}

/* --- Age Calculator Section (Image 2 styles) --- */
.age-calculator-container {
    padding: 80px 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 50vh; /* Ensure it takes up sufficient height */
    background: linear-gradient(180deg, #f8faff 0%, #ebf2ff 100%); /* Subtle gradient background */
}

.age-calculator-card {
    background-color: #ffffff;
    padding: 40px;
    border-radius: 20px; /* More rounded corners */
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1), 0 0 0 1px rgba(0, 0, 0, 0.05); /* Enhanced shadow */
    text-align: center;
    width: 100%;
    max-width: 450px; /* Max width for the card */
    box-sizing: border-box; /* Include padding in width */
}

.age-calculator-card h2 {
    font-size: 2em;
    color: #333;
    margin-bottom: 30px;
    font-weight: 700;
}

.hourglass-icon {
    font-size: 3.5em; /* Larger icon */
    color: #000000; /* Changed from #007bff to black */
    margin-bottom: 25px;
}

.input-label {
    font-size: 1.1em;
    color: #555;
    margin-bottom: 15px;
}

.input-group {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px; /* Space between input and button */
    margin-bottom: 30px;
}

.dob-input {
    flex-grow: 1; /* Allows input to take available space */
    padding: 12px 15px;
    border: 1px solid #e0e0e0;
    border-radius: 10px; /* Rounded input */
    font-size: 1.1em;
    color: #333;
    outline: none;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.dob-input:focus {
    border-color: #000000; /* Changed from #007bff to black */
    box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.2); /* Changed from rgba(0, 123, 255, 0.2) to black with transparency */
}

/* Style for the date picker icon */
.dob-input::-webkit-calendar-picker-indicator {
    /* If you want this icon to be black, you might need to remove this filter or adjust it */
    filter: invert(0.5) sepia(1) saturate(5) hue-rotate(175deg); /* Tints the icon blue by default on some browsers */
    opacity: 0.8;
    cursor: pointer;
}

.calculate-btn {
    background-color: #40505f; /* Changed from #007bff to a dark grey */
    color: rgb(243, 241, 241); /* Keeping text white/off-white */
    padding: 12px 25px;
    border: none;
    border-radius: 10px;
    font-size: 1.1em;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.2s ease;
    white-space: nowrap;
}

.calculate-btn:hover {
    background-color: #000000; /* Changed from #0056b3 to black */
    transform: translateY(-2px);
}

.result-section {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid #f0f0f0;
}

.result-label {
    font-size: 1.2em;
    color: #555;
    margin-bottom: 10px;
}

.age-display {
    font-size: 2em; /* Larger age display */
    font-weight: 700;
    color: #000000; /* Changed from #007bff to black */
    margin-bottom: 20px;
    min-height: 1.2em;
}

.quote {
    font-style: italic;
    color: #777;
    margin-bottom: 10px;
    font-size: 0.95em;
}

.author {
    color: #999;
    font-size: 0.85em;
    margin-bottom: 25px;
}

.calculate-again-btn {
    background-color: #40505f; /* Changed from #e0f2ff (light blue) to dark grey */
    color: #ffffff; /* Changed from #007bff to white */
    padding: 10px 20px;
    border: none;
    border-radius: 10px;
    font-size: 1em;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.2s ease;
}

.calculate-again-btn:hover {
    background-color: #000000; /* Changed from #cce7ff to black */
    transform: translateY(-2px);
}

/* --- Features Section --- */
.features-section {
    padding: 80px 20px;
    background-color: #f8faff;
}

.features-section .container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.feature-card {
    background-color: #ffffff;
    border-radius: 12px;
    padding: 40px 30px;
    text-align: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.feature-card .icon-placeholder {
    font-size: 3em;
    color: #999;
    margin-bottom: 20px;
    width: 80px;
    height: 80px;
    background-color: #eaeaea;
    border-radius: 10px;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0 auto 20px auto;
}

.feature-card h3 {
    font-size: 1.5em;
    font-weight: 600;
    color: #333;
    margin-bottom: 10px;
}

.feature-card p {
    color: #666;
    font-size: 1em;
}

/* --- Call to Action Section --- */
.call-to-action-section {
    text-align: center;
    padding: 100px 20px;
    background-color: #ffffff;
    background: linear-gradient(180deg, #f8faff 0%, #ebf2ff 100%);
}

.call-to-action-section h2 {
    font-size: 2.5em;
    font-weight: 700;
    color: #333;
    margin-bottom: 15px;
}

.call-to-action-section p {
    font-size: 1.2em;
    color: #666;
    margin-bottom: 40px;
}

/* --- Footer --- */
.footer {
    background-color: #000;
    color: #aaa;
    padding: 60px 0;
    font-size: 0.9em;
}

.footer .container {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 40px;
}

/* SVG icon in footer */
.footer-svg-icon {
    width: 100px;
    height: auto;
    margin-bottom: 20px;
}

.footer-svg-icon svg {
    width: 100%;
    height: auto;
    fill: #eee;
}

.footer-right {
    display: flex;
    gap: 60px;
    flex-wrap: wrap;
}

.footer-column h4 {
    color: #fff;
    font-size: 1.1em;
    margin-bottom: 20px;
    font-weight: 600;
}

.footer-column ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.footer-column ul li {
    margin-bottom: 10px;
}

.footer-column ul li a {
    text-decoration: none;
    color: #aaa;
    transition: color 0.3s ease;
}

.footer-column ul li a:hover {
    color: #fff;
}

/* --- Modal Styles --- */
.modal {
    display: none; /* Hidden by default - JS will change this */
    position: fixed; /* Stay in place */
    z-index: 1000; /* Sit on top */
    left: 0;
    top: 0;
    width: 100%; /* Full width */
    height: 100%; /* Full height */
    overflow: auto; /* Enable scroll if needed */
    background-color: rgba(0,0,0,0.6); /* Black w/ opacity */
    justify-content: center; /* Center horizontally (requires display: flex/grid) */
    align-items: center; /* Center vertically (requires display: flex/grid) */
    padding: 20px; /* Padding around modal content */
    box-sizing: border-box; /* Include padding in dimensions */
}

.modal-content {
    background-color: #fefefe;
    margin: auto; /* For older browsers / fallback positioning */
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
    max-width: 800px; /* Max width of the modal */
    width: 100%; /* Take full width up to max-width */
    position: relative; /* For the close button positioning */
    animation-name: animatemodal;
    animation-duration: 0.4s;
    overflow-y: auto; /* Enable scrolling for content if it overflows */
    max-height: 90vh; /* Limit modal height */
}

/* Animation for modal appearance */
@keyframes animatemodal {
    from {top: -300px; opacity: 0}
    to {top: 0; opacity: 1}
}

.close-button {
    color: #aaa;
    position: absolute;
    top: 15px;
    right: 25px;
    font-size: 35px;
    font-weight: bold;
    cursor: pointer;
    transition: color 0.3s ease;
}

.close-button:hover,
.close-button:focus {
    color: #333;
    text-decoration: none;
}

/* Styles for content inside modal (reusing some from previous learn-more-section) */
.modal-content h2 {
    font-size: 2.5em;
    color: #333;
    margin-bottom: 40px;
    font-weight: 700;
    text-align: center;
}

.modal-details-block {
    margin-bottom: 30px;
    text-align: left;
}

.modal-details-block h3 {
    font-size: 1.6em;
    color: #333;
    margin-bottom: 15px;
    font-weight: 600;
}

.modal-details-block p {
    font-size: 1.05em;
    color: #555;
    margin-bottom: 10px;
    line-height: 1.7;
}

.modal-details-block ul {
    list-style: none; /* Remove default bullet points */
    padding: 0;
    margin-left: 20px; /* Indent for custom bullet */
}

.modal-details-block ul li {
    font-size: 1em;
    color: #666;
    margin-bottom: 8px;
    position: relative;
    padding-left: 25px; /* Space for custom bullet */
}

.modal-details-block ul li:before {
    content: '✓'; /* Custom checkmark bullet */
    position: absolute;
    left: 0;
    color: #000; /* Black checkmark */
    font-weight: bold;
}

.modal-cta {
    margin-top: 50px;
    padding-top: 30px;
    border-top: 1px solid #f0f0f0;
    text-align: center;
}

.modal-cta h3 {
    font-size: 1.8em;
    color: #333;
    margin-bottom: 25px;
    font-weight: 700;
}


/* --- Responsive Design for Modal --- */
@media (max-width: 850px) {
    .modal-content {
        max-width: 90%; /* Wider on smaller screens */
        padding: 30px;
    }
    .modal-content h2 {
        font-size: 2em;
        margin-bottom: 30px;
    }
    .modal-details-block h3 {
        font-size: 1.4em;
    }
    .modal-details-block p, .modal-details-block ul li {
        font-size: 0.95em;
    }
}

@media (max-width: 550px) {
    .modal {
        padding: 10px; /* Less padding on very small screens */
    }
    .modal-content {
        padding: 20px;
        border-radius: 10px;
    }
    .modal-content h2 {
        font-size: 1.8em;
        margin-bottom: 25px;
    }
    .modal-details-block {
        margin-bottom: 20px;
    }
    .modal-details-block h3 {
        font-size: 1.2em;
    }
    .modal-cta h3 {
        font-size: 1.5em;
    }
    .close-button {
        font-size: 30px;
        top: 10px;
        right: 15px;
    }
}


/* --- Responsive Design for general layout --- */
@media (max-width: 768px) {
    .navbar .container {
        flex-direction: column;
        gap: 15px;
    }
    .navbar nav ul {
        gap: 20px;
    }
    .hero-section h1 {
        font-size: 2.5em;
    }
    .hero-section .tagline {
        font-size: 1.2em;
    }
    .hero-buttons {
        flex-direction: column;
        gap: 10px;
    }
    .primary-btn, .secondary-btn {
        width: 100%;
        max-width: 250px;
    }
    .age-calculator-card {
        padding: 30px;
    }
    .features-section .container {
        grid-template-columns: 1fr; /* Stack cards on small screens */
    }
    .footer .container {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    .footer-right {
        flex-direction: column;
        gap: 30px;
    }
    .footer-column {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .navbar .logo {
        font-size: 20px;
    }
    .navbar nav ul {
        flex-direction: column;
        align-items: center;
        gap: 10px;
    }
    .try-now-btn {
        padding: 8px 15px;
        font-size: 14px;
    }
    .hero-section {
        padding: 80px 20px;
    }
    .hero-section h1 {
        font-size: 2em;
    }
    .hero-section .tagline {
        font-size: 1em;
    }
    .age-calculator-section {
        padding: 40px 15px;
    }
    .age-calculator-section h2 {
        font-size: 1.8em;
    }
    .hourglass-icon {
        font-size: 2.8em;
    }
    .input-group {
        flex-direction: column;
        gap: 15px;
    }
    .dob-input, .calculate-btn {
        width: 100%;
        max-width: 300px; /* Limit input width on small screens */
    }
    .result-label {
        font-size: 1.1em;
    }
    .age-display {
        font-size: 1.8em;
    }
    .quote, .author {
        font-size: 0.8em;
    }
    .feature-card {
        padding: 30px 20px;
    }
    .call-to-action-section {
        padding: 60px 20px;
    }
    .call-to-action-section h2 {
        font-size: 2em;
    }
}