/* Basic */

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

body {
    font-family: 'Poppins', sans-serif;
    background-color: white;
}

html {
    scroll-behavior: smooth;
}

section {
    padding: 5rem 1rem;
}

/* Root Variables */
:root {
  --primary-green: #2e7d4e;
  --primary-green-light: #3a9c5d;
  --primary-green-lighter: #48b46d;
  
  --accent-teal: #2a9d8f;
  --accent-yellow: #e9c46a;
  --accent-orange: #f4a261;
  
  --neutral-light: #f8f9fa;
  --neutral-medium: #e9ecef;
  --neutral-dark: #495057;
}

/* Cards */

.r-card, .intro-card, .fact-card {
    border: 1px solid rgba(0, 0, 0, 0.08);
    background: rgba(255, 255, 255, 0.95);
}

/* CTA and Learn More button */

.cta-button, .learn-more-button {
    padding: 1rem 2.2rem;
    font-size: 1.15rem;
    font-weight: 600;
    color: #ffffff;
    background: linear-gradient(135deg, var(--primary-green), var(--primary-green-light));
    border: none;
    border-radius: 50px;
    text-decoration: none;
    cursor: pointer;
    backdrop-filter: blur(8px);
    box-shadow: 0 4px 15px rgba(46, 125, 78, 0.4);
    transition: background 0.3s ease, transform 0.15s ease, box-shadow 0.3s ease;
}

.cta-button:hover, .learn-more-button:hover {
    background: linear-gradient(135deg, var(--primary-green-light), var(--primary-green-lighter));
    transform: translateY(-4px) scale(1.05);
    box-shadow: 0 6px 20px rgba(46, 125, 78, 0.6);
}

/* NavBar */

.top-navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 60px;
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 1rem;
    color: #111;
    z-index: 1100;
}

.logo {
    color: #111;
    font-weight: 700;
    font-size: 1.4rem;
}

.hamburger {
    font-size: 1.8rem;
    cursor: pointer;
    color: #111;
    transition: transform 0.3s ease;
}

.hamburger:hover {
    transform: scale(1.1);
}

/* Side Bar */

.sidebar {
    position: fixed;
    top: 60px;
    left: -250px;
    width: 250px;
    height: calc(100% - 60px);
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-right: 1px solid rgba(0,0,0,0.05);
    transition: left 0.3s ease;
    z-index: 1050;
    padding-top: 1rem;
}

.sidebar.active {
    left: 0;
}

.sidebar-header {
    text-align: center;
    padding: 10px 0;
    font-size: 1.5rem;
    font-weight: bold;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-menu {
    list-style: none;
    padding: 0;
    margin: 0;
}

.sidebar-menu li {
    position: relative;
}

.sidebar-menu a {
    display: flex;
    align-items: center;
    padding: 0.75rem 1rem;
    text-decoration: none;
    color: #111;
    font-size: 1rem;
    transition: background 0.3s ease, color 0.3s ease;
    cursor: pointer;
}

.sidebar-menu a i {
    margin-right: 0.75rem;
    font-size: 1.2rem;
}

.sidebar-menu a:hover,
.sidebar-menu li.active {
    background: rgba(0, 0, 0, 0.05);
}

.dropdown-menu {
    list-style: none;
    padding: 0;
    display: none;
    flex-direction: column;
}

.dropdown-menu li a {
    padding-left: 40px;
    font-size: 0.95rem;
}

.dropdown.active .dropdown-menu {
    display: flex;
}

.dropdown-icon {
    color: #000;
    margin-left: auto;
    transition: transfrom 0.3s ease;
}

.dropdown.active .dropdown-icon {
    transform: rotate(180deg);
}

.top-navbar, .sidebar {
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}

/* Green test section */

.greentest.enhanced {
    background: linear-gradient(to bottom right, #e6f4ea, #ffffff);
    border-radius: 20px;
    max-width: 700px;
    margin: 100px auto 50px;
    padding: 2rem;
    box-shadow: 0 10px 30px rgba(46, 125, 78, 0.15);
}

.greentest.enhanced h1 {
    font-size: 2.5rem;
    text-align: center;
    color: var(--primary-green);
}

.greentest.enhanced .intro-text {
    text-align: center;
    font-size: 1rem;
    color: #555;
    margin-bottom: 2rem;
}

.greentest.enhanced .question {
    margin-bottom: 1.5rem;
}

.greentest.enhanced label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #333;
}

.greentest.enhanced select {
    width: 100%;
    padding: 10px 15px;
    font-size: 1.5rem;
    border-radius: 25px;
    border: 1px solid #ccc;
    background-color: #fff;
    transition: border-color 0.3s;
}
.greentest.enhanced select:focus {
    border-color: var(--primary-green-light);
    outline: none;
}

.greentest.enhanced button {
    display: block;
    margin: 2rem auto 1rem;
    padding: 12px 30px;
    font-size: 1.2rem;
    background-color: var(--primary-green);
    color: #fff;
    border: none;
    border-radius: 25px;
    cursor: pointer;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: background-color 0.3s, transform 0.2s;
}

.greentest.enhanced button:hover {
    background-color: var(--primary-green-light);
    transform: scale(1.05);
}

#result {
    background: #e9fbe6;
    color: #2e7d4e;
    border-left: 5px solid #3a9c5d;
    padding: 1rem;
    font-weight: bold;
    text-align: center;
    margin-top: 1.5rem;
    border-radius: 10px;
    font-size: 1.1rem;
}

/* Footer and Go back btn */

.go-back-btn {
    position: relative;
    margin: 2rem auto 0 auto;
    background: #3a9c5d;
    color: white;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    text-decoration: none;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    transition: background 0.3s ease, transform 0.3s ease;
    z-index: 999;
    margin-bottom: 1rem;
    cursor: pointer;
}

.go-back-btn::after {
    content: "Go back to home page";
    position: absolute;
    bottom: 60px;
    left: 50%;
    transform: translateX(-50%);
    background: #3a9c5d;
    color: white;
    padding: 0.4rem 0.7rem;
    border-radius: 0.5rem;
    font-size: 0.85rem;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.go-back-btn:hover::after {
    opacity: 1;
}

.go-back-btn:hover {
    background: #2e7d4f;
    transform: scale(1.1);
}

/* Footer */
.footer {
    background-color: #2e7d4e;
    color: #fff;
    padding: 40px 20px 20px;
}

.footer-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: flex-start;
    max-width: 1100px;
    margin: 0 auto;
    gap: 2rem;
    padding: 0 1rem;
    text-align: left;
}

.footer-section {
    flex: 1 1 200px;
    margin: 20px;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
}

.footer-section {
    margin-left: 60px;
}

.footer-section h3 {
    margin-bottom: 15px;
    font-size: 18px;
    color: #ffffff;
}

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

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

.footer-section ul li a {
    text-decoration: none;
    color: #ffffff;
    transition: 0.3s;
}

.footer-section ul li a:hover {
    color: #54d17f;
}

.social-icons a {
    display: inline-block;
    margin-right: 15px;
    font-size: 20px;
    color: #ffffff;
    transition: 0.3s;
}

.social-icons a:hover {
    color: #54d17f;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    font-size: 14px;
    color: #ffffff;
    border-top: 1px solid #333;
}