/* css/style.css */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&display=swap');

:root {
    --primary-color: #007BFF; /* Professional Blue */
    --primary-hover-color: #0056b3;
    --secondary-color: #6c757d; /* Muted Gray */
    --accent-color: #17a2b8;   /* Teal Accent */
    --light-color: #f8f9fa;    /* Light Background */
    --dark-color: #343a40;     /* Dark Text */
    --card-bg-color: #ffffff;
    --border-color: #dee2e6;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --shadow-hover-color: rgba(0, 0, 0, 0.15);
    --success-color: #28a745;
    --error-color: #dc3545;
    --star-selected-color: #FFD700; /* Gold for stars */
    --star-default-color: #ccc;    /* Light grey for empty stars */
    --font-family: 'Poppins', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --header-height: 70px;
}

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

html {
    scroll-behavior: smooth; 
}

body {
    font-family: var(--font-family);
    background-color: var(--light-color);
    color: var(--dark-color);
    line-height: 1.6;
    font-size: 16px;
    padding-top: var(--header-height); 
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

a {
    text-decoration: none;
    color: var(--primary-color);
    transition: color 0.3s ease;
}

a:hover {
    color: var(--primary-hover-color);
}

img {
    max-width: 100%;
    height: auto;
}

/* Header */
header {
    background: white;
    color: var(--dark-color);
    padding: 15px 0;
    box-shadow: 0 2px 8px var(--shadow-color);
    position: fixed;
    width: 100%;
    top: 0;
    left: 0;
    z-index: 1000;
    height: var(--header-height);
    display: flex;
    align-items: center;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-color);
    display: flex;
    align-items: center;
}
.logo i {
    margin-right: 8px;
    color: var(--accent-color);
}

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

nav ul li {
    margin-left: 25px;
}

nav ul li a {
    color: var(--dark-color);
    font-weight: 500;
    position: relative;
    padding-bottom: 5px;
}

nav ul li a:hover {
    color: var(--primary-color);
}

nav ul li a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    bottom: 0;
    left: 0;
    transition: width 0.3s ease;
}

nav ul li a:hover::after {
    width: 100%;
}

/* Breadcrumb for calculator pages and static pages */
.breadcrumb-nav {
    padding-top: 10px; /* Reduced top padding */
    padding-bottom: 10px; /* Added bottom padding for space from title */
    font-size: 0.9rem;
    color: var(--secondary-color);
}
.breadcrumb-nav a {
    color: var(--primary-color);
    font-weight: 500;
}
.breadcrumb-nav a:hover {
    text-decoration: underline;
}
.breadcrumb-nav span {
    color: var(--dark-color);
    font-weight: 500;
}


/* Hero Section (Homepage) */
.hero {
    background: linear-gradient(rgba(0, 123, 255, 0.8), rgba(0, 86, 179, 0.8)), url('https://images.unsplash.com/photo-1516321497487-e288fb19713f?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxzZWFyY2h8Nnx8dG9vbHN8ZW58MHx8MHx8fDA%3D&auto=format&fit=crop&w=800&q=60') no-repeat center center/cover;
    color: white;
    padding: 80px 0;
    text-align: center;
    margin-bottom: 0; 
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 20px;
    font-weight: 700;
    animation: fadeInDown 1s ease-out;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    font-weight: 300;
    animation: fadeInUp 1s ease-out 0.3s both;
}

/* Why Choose Us Section */
.why-choose-us {
    padding: 50px 0; 
    background-color: #fff; 
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 20px;
}

.feature-item {
    text-align: center;
    padding: 20px;
}

.feature-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.feature-item h3 {
    font-size: 1.3rem;
    color: var(--dark-color);
    margin-bottom: 10px;
    font-weight: 600;
}

.feature-item p {
    font-size: 0.95rem;
    color: var(--secondary-color);
    line-height: 1.7;
}
.why-choose-us .container > div[style*="text-align: center"] { 
    margin-top: 30px;
    padding: 20px;
    background-color: var(--light-color);
    border-radius: 8px;
}
.why-choose-us .container > div[style*="text-align: center"] p {
     color: var(--dark-color);
     font-size: 1rem;
}


/* Section Title Styling */
.section-title {
    text-align: center;
    margin-bottom: 50px;
}

.section-title h2 {
    font-size: 2.5rem;
    color: var(--dark-color);
    position: relative;
    display: inline-block;
    padding-bottom: 15px;
    font-weight: 600;
}

.section-title h2::after {
    content: '';
    position: absolute;
    width: 80px;
    height: 3px;
    background-color: var(--primary-color);
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
}


/* Calculator List / Cards */
#calculator-list-section { 
    padding: 60px 0 40px 0; 
}

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

.card {
    background-color: var(--card-bg-color);
    border-radius: 10px;
    padding: 30px;
    box-shadow: 0 5px 15px var(--shadow-color);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;   
    text-align: center;    
    overflow: hidden; 
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: 0 10px 25px var(--shadow-hover-color);
}

.card-icon {
    font-size: 3rem; 
    color: var(--primary-color);
    margin-bottom: 20px;
    width: 70px;
    height: 70px;
    background-color: #e7f3ff; 
    border-radius: 50%;
    display: flex;         
    align-items: center;   
    justify-content: center;
    flex-shrink: 0; 
}

.card h3 {
    margin-top: 0; 
    margin-bottom: 10px;
    font-size: 1.6rem;
    color: var(--dark-color);
    font-weight: 600;
    word-break: break-word; 
}

.card p {
    font-size: 0.95rem;
    color: var(--secondary-color);
    flex-grow: 1; 
    margin-bottom: 20px; 
    word-break: break-word; 
    overflow-wrap: break-word; 
}

.card .btn {
    margin-top: auto; 
    flex-shrink: 0; 
}


/* === Button Refinements === */
.btn {
    display: inline-block;
    background-color: var(--primary-color);
    color: white;
    padding: 12px 30px; 
    border: none;
    border-radius: 50px; 
    text-decoration: none;
    font-size: 1rem; 
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.25s ease-out, transform 0.15s ease-out, box-shadow 0.25s ease-out; 
    box-shadow: 0 4px 12px rgba(0, 123, 255, 0.25); 
    position: relative; 
    overflow: hidden; 
    -webkit-tap-highlight-color: transparent;
    outline: none; 
}

.btn i { 
    margin-right: 8px;
}
.btn i.fa-arrow-right { 
    margin-right: 0;
    margin-left: 8px;
}


.btn:hover {
    background-color: var(--primary-hover-color);
    box-shadow: 0 7px 18px rgba(0, 123, 255, 0.35); 
    transform: translateY(-3px); 
}

.btn:active {
    transform: translateY(-1px) scale(0.97); 
    box-shadow: 0 3px 8px rgba(0, 123, 255, 0.2); 
    outline: none; 
}

.calculator-container .btn:not(.copy-btn):not(.btn-feedback):not(.btn-feedback-submit-star),
.contact-form-container .btn { 
    width: 100%;
    padding: 15px; 
    font-size: 1.1rem;
}


.btn-secondary {
    background-color: var(--secondary-color);
    color: white;
    box-shadow: 0 4px 10px rgba(108, 117, 125, 0.2);
    -webkit-tap-highlight-color: transparent; 
    outline: none; 
}
.btn-secondary:hover {
    background-color: #5a6268; 
    box-shadow: 0 6px 15px rgba(108, 117, 125, 0.3);
    transform: translateY(-2px); 
}
.btn-secondary:active {
    transform: translateY(0px) scale(0.98);
    box-shadow: 0 2px 5px rgba(108, 117, 125, 0.15);
    outline: none; 
}

.result-area .copy-btn {
    padding: 10px 18px; 
    font-size: 0.95rem;
    display: inline-block; 
    vertical-align: middle; 
    position: relative; 
    overflow: hidden; 
    margin-top: 15px; 
    transition: background-color 0.2s ease-out, transform 0.15s ease-out, box-shadow 0.2s ease-out;
    -webkit-tap-highlight-color: transparent; 
}

.result-area .copy-btn .btn-text {
    display: inline-block;
    transition: opacity 0.2s ease-in-out, transform 0.2s ease-in-out; 
    opacity: 1;
    transform: translateY(0);
}

.result-area .copy-btn.is-changing .btn-text {
    opacity: 0;
    transform: translateY(5px); 
}

.result-area .copy-btn i { 
    margin-right: 6px;
    transition: opacity 0.2s ease-in-out; 
}

/* Calculator Page Specific Styles & Static Page Titles */
.calculator-page-title, 
.static-page-main-title { /* Used for titles on contact, privacy etc. */
    text-align: center;
    margin-top: 10px; /* Adjusted margin for pages with top ad */
    margin-bottom: 20px;
    font-size: 2.2rem;
    color: var(--dark-color);
    font-weight: 600;
}

.calculator-container {
    background-color: var(--card-bg-color);
    padding: 35px;
    border-radius: 10px;
    box-shadow: 0 8px 25px var(--shadow-color);
    max-width: 650px;
    margin: 20px auto 40px; 
}

/* === Input Field Focus States === */
.form-group {
    margin-bottom: 30px; 
    position: relative; 
}

.form-group label {
    display: block;
    font-weight: 500;
    color: var(--secondary-color);
    font-size: 0.95rem;
    position: absolute; 
    left: 16px; 
    top: 15px;  
    pointer-events: none; 
    transition: all 0.2s ease-out;
    background-color: var(--card-bg-color); 
    padding: 0 5px; 
}
.form-group label i { 
    margin-right: 5px;
}


.form-group input[type="text"],
.form-group input[type="number"],
.form-group input[type="date"],
.form-group select {
    width: 100%;
    padding: 14px 15px; 
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-sizing: border-box;
    font-size: 1rem;
    font-family: var(--font-family);
    transition: border-color 0.25s ease-out, box-shadow 0.25s ease-out;
    background-color: var(--card-bg-color); 
}


.form-group input:focus + label,
.form-group input.has-value + label, 
.form-group select:focus + label,
.form-group select.has-value + label { 
    top: -10px; 
    font-size: 0.8rem; 
    color: var(--primary-color); 
}


.form-group input[type="text"]:focus,
.form-group input[type="number"]:focus,
.form-group input[type="date"]:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3.5px rgba(0, 123, 255, 0.2), 0 1px 3px rgba(0,0,0,0.07); 
}

.form-group input:focus::placeholder {
  /* color: transparent; */ 
}
.form-group .form-text { 
    font-size: 0.8rem; 
    color: #6c757d; 
    display:block; 
    margin-top:5px;
    padding-left: 2px;
}


.result-area {
    margin-top: 30px;
    padding: 25px;
    background-color: var(--light-color);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    text-align: center;
    transition: all 0.3s ease;
}

.result-area h3 {
    margin-top: 0;
    margin-bottom: 15px;
    color: var(--primary-color);
    font-weight: 600;
    font-size: 1.3rem;
}

.result-area p {
    font-size: 1.1rem; 
    font-weight: 500; 
    margin: 10px 0 0;
    color: var(--dark-color);
}

.result-area .error {
    color: var(--error-color);
    font-weight: 500;
}

.result-area .success, .result-area .normal-weight { 
    color: var(--success-color);
    font-weight: 600;
}
.result-area .underweight, .result-area .overweight, .result-area .obesity { 
    color: var(--error-color); 
    font-weight: 600;
}

/* Calculator Content Sections & Static Page Content Sections */
.calculator-info-section, .static-page-content { 
    margin-top: 20px; 
    margin-bottom: 40px;
    padding: 30px; 
    background-color: #fff;
    border-radius: 10px; 
    box-shadow: 0 4px 15px var(--shadow-color); 
}
.calculator-info-section h2, .static-page-content h2 { 
    font-size: 1.6rem; 
    color: var(--primary-color);
    margin-bottom: 20px; 
    border-bottom: 2px solid var(--light-color);
    padding-bottom: 12px;
    font-weight: 600;
}
.calculator-info-section p, .calculator-info-section ul,
.static-page-content p, .static-page-content ul { 
    font-size: 1rem; 
    line-height: 1.8; 
    color: var(--secondary-color); 
}
.calculator-info-section ul, .static-page-content ul { 
    list-style: disc;
    padding-left: 25px; 
    margin-top:15px;
}
.calculator-info-section ul li, .static-page-content ul li { 
    margin-bottom: 10px; 
}
.calculator-info-section strong, .static-page-content strong { 
    color: var(--dark-color);
    font-weight: 600; 
}
.calculator-info-section code { 
    background-color: #e9ecef;
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'Courier New', Courier, monospace;
}
.calculator-info-section dl dt {
    font-weight: 600;
    color: var(--dark-color);
    margin-top: 10px;
}
.calculator-info-section dl dd {
    margin-left: 20px;
    margin-bottom: 10px;
    color: var(--secondary-color);
}
.calculator-info-section dl dd ul {
    margin-top: 5px;
    padding-left: 20px;
}

/* Contact Page Specific Form Styles */
.contact-form-container { 
    max-width: 700px; 
    margin: 0px auto 30px auto; 
    background-color: var(--card-bg-color); 
    padding: 30px; 
    border-radius: 8px; 
    box-shadow: 0 5px 15px var(--shadow-color); 
}
.contact-form-container h2 {
    text-align:center; 
    margin-bottom:25px; 
    font-weight: 600; 
    color: var(--dark-color);
}
.contact-form-container .form-group label {
    background-color: var(--card-bg-color); 
}
.contact-form-container textarea { 
    width: 100%;
    padding: 14px 15px; 
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-sizing: border-box;
    font-size: 1rem;
    font-family: var(--font-family);
    min-height: 120px; 
    resize: vertical; 
    background-color: var(--card-bg-color);
}
.contact-form-container textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3.5px rgba(0, 123, 255, 0.2), 0 1px 3px rgba(0,0,0,0.07);
}
.contact-form-container textarea:focus + label,
.contact-form-container textarea.has-value + label {
    top: -10px; 
    font-size: 0.8rem; 
    color: var(--primary-color); 
}

#formStatus { 
    margin-top: 20px;
    padding: 15px;
    border-radius: 5px;
    text-align: center;
    font-weight: 500;
}
#formStatus.success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}
#formStatus.error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}
.contact-info p { margin-bottom: 10px; font-size: 1.05rem; }
.contact-info i { margin-right: 10px; color: var(--primary-color); }
.contact-info h3 { margin-bottom: 15px; font-weight: 600; color: var(--dark-color); }


/* === Star Rating Feedback CSS === */
.star-rating-feedback-container { 
    margin-top: 20px; 
    padding-top: 15px; 
    border-top: 1px solid var(--border-color); 
    text-align: center;
}
.star-rating-feedback-container p { 
    font-size: 0.9em; 
    margin-bottom: 8px; 
    color: var(--dark-color); 
}
.star-rating-feedback-container .stars {
    cursor: pointer;
    font-size: 1.5em; 
    color: var(--star-default-color); 
    margin-bottom: 10px;
}
.star-rating-feedback-container .stars i.fas.fa-star {
    margin: 0 3px;
    transition: color 0.2s ease-in-out;
}
.star-rating-feedback-container .stars i.fas.fa-star.selected,
.star-rating-feedback-container .stars i.fas.fa-star:hover { 
    color: var(--star-selected-color); 
}
.star-rating-feedback-container .feedback-details-star {
    margin-top:10px; 
    text-align:left; 
}
.star-rating-feedback-container .feedback-details-star textarea {
    width:100%; 
    min-height:70px; 
    padding:10px; 
    border-radius:5px; 
    border:1px solid var(--border-color); 
    font-family:var(--font-family); 
    font-size:0.9rem; 
    margin-bottom:8px; 
    box-sizing: border-box;
    background-color: var(--card-bg-color); 
}
.star-rating-feedback-container .feedback-details-star textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3.5px rgba(0, 123, 255, 0.15);
}
.star-rating-feedback-container .btn-feedback-submit-star {
    display:block; 
    margin:0 auto; 
    padding: 8px 20px; 
    font-size: 0.9rem; 
    width: auto; 
    -webkit-tap-highlight-color: transparent;
}


/* Footer */
footer {
    background-color: var(--dark-color);
    color: #adb5bd; 
    padding-top: 40px; /* Adjusted for ad slots moved out */
    padding-bottom: 30px;
    margin-top: 20px; /* Reduced margin as ads are now above */
}

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

.footer-column h3 {
    font-size: 1.2rem;
    color: white;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
    font-weight: 600;
}

.footer-column h3::after {
    content: '';
    position: absolute;
    width: 40px;
    height: 2px;
    background-color: var(--primary-color);
    bottom: 0;
    left: 0;
}

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

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

.footer-column ul li a {
    color: #adb5bd;
    transition: color 0.3s ease, padding-left 0.3s ease;
    -webkit-tap-highlight-color: transparent; 
}

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

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.social-links a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: white;
    font-size: 1.1rem;
    transition: background-color 0.3s ease, transform 0.3s ease;
    -webkit-tap-highlight-color: transparent; 
}

.social-links a:hover {
    background-color: var(--primary-color);
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.9rem;
}

/* Back to Top Button */
#backToTopBtn {
    display: none; 
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 999;
    border: none;
    outline: none; 
    background-color: var(--primary-color);
    color: white;
    cursor: pointer;
    padding: 10px 13px; 
    border-radius: 50%;
    font-size: 18px; 
    box-shadow: 0 4px 12px rgba(0,0,0,0.25);
    transition: opacity 0.3s ease-in-out, visibility 0.3s ease-in-out, transform 0.2s ease-in-out;
    -webkit-tap-highlight-color: transparent; 
}

#backToTopBtn:hover {
    background-color: var(--primary-hover-color);
    transform: scale(1.1);
}
#backToTopBtn.show { 
    display: block;
    opacity: 1;
    visibility: visible;
}

/* --- Ad Slot Styling --- */
.ad-slot {
    margin: 0 auto; 
    padding: 0; 
    text-align: center; 
    clear: both; 
    line-height: 0; 
}
.ad-slot iframe { 
    margin: 0 auto;
    display: block; 
}
.text-center { /* General utility for centering */
    text-align: center;
}

.ad-slot-header-page { /* For index.html below hero */
    margin-top: 25px;
    margin-bottom: 25px;
}
.ad-slot-page-top { /* For inner pages, below header/nav */
    margin-top: 10px; /* Space from header */
    margin-bottom: 10px; /* Space before breadcrumb/title */
}

.ad-slot-above-footer { 
    margin-top: 40px; 
    margin-bottom: 15px; /* Space between ad and direct link */
    padding: 15px 0;
    border-top: 1px solid var(--border-color); 
}
.direct-link-above-footer {
    text-align: center;
    padding: 0 0 30px 0; /* Space before actual footer starts */
    font-size: 0.9em;
}
.direct-link-above-footer a {
    color: var(--secondary-color); 
    text-decoration: underline;
}
.direct-link-above-footer a:hover {
    color: var(--primary-color);
}

.ad-slot-below-result { margin-top: 25px; }
.ad-slot-in-content { margin: 25px auto; }


/* Default: Mobile ads visible, Desktop ads hidden */
.ad-mobile {
    display: inline-block; 
    vertical-align: top; 
}
.ad-desktop {
    display: none;
    vertical-align: top;
}

/* Tablet and Desktop (e.g., 768px and up) */
@media (min-width: 768px) {
    .ad-mobile {
        display: none;
    }
    .ad-desktop {
        display: inline-block; 
    }
}

/* Specific Ad Card styling for homepage grid */
.grid .ad-card {
    background-color: var(--card-bg-color);
    border: 1px dashed var(--border-color);
    display: flex;
    flex-direction: column; 
    align-items: center;
    justify-content: center;
    padding: 20px; 
    min-height: 250px; 
    text-align: center;
}
.grid .ad-card > div[id^="container-"] { 
    width: 100%;
    max-width: 100%; 
    margin-bottom: 5px; 
}
.grid .ad-card small {
    color: var(--secondary-color);
    font-size: 0.8em;
    margin-top: 5px;
}


/* Animations */
@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-30px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Responsive Adjustments */
@media (max-width: 992px) {
    .hero h1 { font-size: 2.5rem; }
    .hero p { font-size: 1.1rem; }
    .section-title h2 { font-size: 2rem; }
    .features-grid { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
    .feature-item h3 { font-size: 1.2rem; }
}
@media (max-width: 768px) {
    body { padding-top: 0; }
    header { position: relative; height: auto; padding: 15px 0; }
    .header-container { flex-direction: column; align-items: center; }
    .logo { margin-bottom: 15px; }
    nav ul { margin-top: 10px; padding-left: 0; justify-content: center; }
    nav ul li { margin: 0 10px; }
    .hero { padding: 60px 0; }
    .hero h1 { font-size: 2rem; }
    .hero p { font-size: 1rem; }
    .why-choose-us { padding: 40px 0; }
    .features-grid { grid-template-columns: 1fr; }
    .grid { grid-template-columns: 1fr; } 
    .grid .ad-card { min-height: auto; } 
    .calculator-container { width: 90%; padding: 25px; }
    .footer-content { grid-template-columns: 1fr; text-align: center; }
    .footer-column h3::after { left: 50%; transform: translateX(-50%); }
    .social-links { justify-content: center; }
    #backToTopBtn { bottom: 20px; right: 20px; padding: 8px 11px; font-size: 16px; }
    .calculator-page-title, .static-page-main-title { margin-top: 10px; margin-bottom: 15px; }

}
@media (max-width: 480px) {
    nav ul li { margin: 0 8px; }
    nav ul li a { font-size: 0.9rem; }
    .card h3 { font-size: 1.4rem; }
    .btn { padding: 10px 25px; font-size: 0.95rem; }
    .calculator-container .btn:not(.copy-btn):not(.btn-feedback):not(.btn-feedback-submit-star),
    .contact-form-container .btn { 
        padding: 12px; font-size: 1rem; 
    }
    .calculator-page-title, .static-page-main-title { font-size: 1.8rem; }
    .form-group label { left: 12px; top: 13px; font-size: 0.9rem; } 
    .form-group input:focus + label,
    .form-group input.has-value + label,
    .form-group select:focus + label,
    .form-group select.has-value + label,
    .contact-form-container textarea:focus + label, 
    .contact-form-container textarea.has-value + label {
        top: -9px; font-size: 0.75rem;
    }
    .star-rating-feedback-container .stars { font-size: 1.3em; }
    .star-rating-feedback-container .btn-feedback-submit-star { padding: 6px 15px; font-size: 0.85rem; }
    .ad-slot-header-page, .ad-slot-page-top { margin-top:10px; margin-bottom:10px;}
}