/* Custom Variables */
:root {
    --primary-color: #7db73f;
    --secondary-color: #8bc152;
    --dark-green: #5a8a2a;
    --light-green: #a9d674;
    --white: #ffffff;
    --off-white: #f8f9fa;
    --light-gray: #e9ecef;
    --gray: #6c757d;
    --dark-gray: #343a40;
    --black: #212529;
    --box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease-in-out;
    
    /* Theme Colors */
    --bg-color: #ffffff;
    --bg-secondary: #f8f9fa;
    --text-color: #212529;
    --text-secondary: #6c757d;
    --card-bg: #ffffff;
    --header-bg: #ffffff;
    --footer-bg: #5a8a2a;
    --footer-text: #ffffff;
    --border-color: #e9ecef;
    --input-bg: #ffffff;
    --input-text: #212529;
    --input-border: #e9ecef;
    --card-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    --hero-text-shadow: 2px 2px 5px rgba(0, 0, 0, 0.5);
    --link-color: #7db73f;
    --link-hover: #5a8a2a;
}

/* Dark Theme Colors */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-color: #121212;
        --bg-secondary: #1e1e1e;
        --text-color: #e0e0e0;
        --text-secondary: #aaaaaa;
        --card-bg: #2a2a2a;
        --header-bg: #1a1a1a;
        --footer-bg: #2a2a2a;
        --footer-text: #e0e0e0;
        --border-color: #333333;
        --input-bg: #2a2a2a;
        --input-text: #e0e0e0;
        --input-border: #444444;
        --card-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
        --hero-text-shadow: 2px 2px 5px rgba(0, 0, 0, 0.8);
        --link-color: #8bc152;
        --link-hover: #a9d674;
        --primary-color: #8bc152;
        --secondary-color: #a9d674;
    }
    
    /* Invert logo if needed */
    .logo-img, .footer-logo-img {
        filter: brightness(0.9);
    }
    
    /* Increase contrast for important elements */
    .btn-primary {
        background-color: #8bc152;
    }
    
    .btn-primary:hover {
        background-color: #a9d674;
    }
}

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

html {
    font-size: 62.5%;
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', sans-serif;
    font-size: 1.6rem;
    line-height: 1.7;
    color: var(--text-color);
    background-color: var(--bg-color);
    overflow-x: hidden;
    transition: background-color 0.3s ease, color 0.3s ease;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Playfair Display', serif;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    color: var(--text-color);
    transition: color 0.3s ease;
}

h1 {
    font-size: 4.5rem;
}

h2 {
    font-size: 3.6rem;
}

h3 {
    font-size: 2.4rem;
}

p {
    margin-bottom: 1.5rem;
}

a {
    text-decoration: none;
    color: var(--link-color);
    transition: var(--transition);
}

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

ul {
    list-style: none;
}

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

.container {
    width: 100%;
    max-width: 120rem;
    margin: 0 auto;
    padding: 0 2rem;
}

section {
    padding: 8rem 0;
}

.section-header {
    text-align: center;
    margin-bottom: 5rem;
}

.section-header h2 {
    display: inline-block;
    position: relative;
    margin-bottom: 1rem;
}

.underline {
    height: 0.4rem;
    width: 8rem;
    background-color: var(--primary-color);
    margin: 0 auto 4rem;
}

.btn {
    display: inline-block;
    padding: 1.2rem 3rem;
    border-radius: 5rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1rem;
    transition: var(--transition);
    border: none;
    cursor: pointer;
}

.btn-primary {
    background-color: var(--primary-color);
    color: var(--white);
}

.btn-primary:hover {
    background-color: var(--dark-green);
    color: var(--white);
}

.btn-secondary {
    background-color: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-secondary:hover {
    background-color: var(--primary-color);
    color: var(--white);
}

/* Header Styles */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: var(--header-bg);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 1.5rem 0;
    transition: var(--transition);
}

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

.logo {
    display: flex;
    align-items: center;
}

.logo-img {
    width: 50px;
    height: auto;
    margin-right: 15px;
}

.logo h1 {
    font-size: 1.8rem;
    margin-bottom: 0;
    color: var(--primary-color);
}

nav ul {
    display: flex;
}

nav ul li {
    margin-left: 2.5rem;
}

nav ul li a {
    color: var(--text-color);
    font-weight: 500;
    position: relative;
}

nav ul li a::after {
    content: '';
    position: absolute;
    bottom: -0.5rem;
    left: 0;
    width: 0;
    height: 0.2rem;
    background-color: var(--primary-color);
    transition: var(--transition);
}

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

.donate-btn {
    background-color: var(--primary-color);
    color: var(--white);
    padding: 0.8rem 2rem;
    border-radius: 5rem;
}

.donate-btn:hover {
    background-color: var(--dark-green);
    color: var(--white);
}

.menu-toggle {
    display: none;
    cursor: pointer;
    font-size: 2.4rem;
    color: var(--primary-color);
}

/* Hero Section */
.hero {
    position: relative;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: #fff;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    z-index: -1;
    animation: slideBackground 15s infinite;
}

@keyframes slideBackground {
    0%, 100% {
        background-image: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url('images/hero-community.jpg');
        opacity: 1;
    }
    33% {
        background-image: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url('images/hero-helping.jpg');
        opacity: 1;
    }
    66% {
        background-image: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url('images/hero-volunteering.jpg');
        opacity: 1;
    }
}

.hero-content {
    max-width: 800px;
    padding: 0 20px;
    position: relative;
    z-index: 1;
}

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    text-shadow: var(--hero-text-shadow);
    color: var(--white);
}

.hero-content p {
    font-size: 1.5rem;
    margin-bottom: 30px;
    text-shadow: var(--hero-text-shadow);
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 2rem;
}

/* About Us Section */
.about {
    background-color: var(--bg-secondary);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
}

.about-text {
    align-self: center;
}

.president {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.president-img {
    width: 30rem;
    height: 40rem;
    border-radius: 1rem;
    overflow: hidden;
    margin-bottom: 2rem;
    box-shadow: var(--card-shadow);
}

.president-message blockquote {
    font-style: italic;
    color: var(--text-secondary);
    padding: 1rem 2rem;
    border-left: 0.4rem solid var(--primary-color);
    background-color: var(--bg-secondary);
    border-radius: 0.5rem;
}

/* Why Donate Section */
.why-donate {
    background-color: var(--bg-color);
}

.reasons {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(25rem, 1fr));
    gap: 3rem;
    margin-bottom: 4rem;
}

.reason {
    text-align: center;
    padding: 3rem 2rem;
    border-radius: 1rem;
    background-color: var(--card-bg);
    box-shadow: var(--card-shadow);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-height: 150px;
}

.reason:hover {
    transform: translateY(-0.5rem);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
    background-color: var(--primary-color);
}

.reason h3 {
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.reason:hover h3, 
.reason:hover p {
    color: #ffffff;
}

.highlight-text {
    text-align: center;
    font-size: 2.2rem;
    font-weight: 600;
    font-style: italic;
    color: var(--dark-green);
}

/* Our Work Section */
.our-work {
    background-color: var(--bg-secondary);
}

.work-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(30rem, 1fr));
    gap: 3rem;
}

.work-card {
    background-color: var(--card-bg);
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: var(--card-shadow);
    transition: var(--transition);
}

.work-card:hover {
    transform: translateY(-0.5rem);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.work-img {
    height: 25rem;
    overflow: hidden;
}

.work-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.work-card:hover .work-img img {
    transform: scale(1.1);
}

.work-info {
    padding: 2rem;
}

.work-info h3 {
    margin-bottom: 1rem;
}

/* Media Section */
.media {
    background-color: var(--bg-color);
}

.media-carousel {
    display: flex;
    justify-content: center;
    gap: 3rem;
    flex-wrap: wrap;
}

.media-item {
    position: relative;
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: var(--card-shadow);
    width: 35rem;
}

.media-item img {
    width: 100%;
    height: 25rem;
    object-fit: cover;
}

.media-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    color: var(--white);
    padding: 1rem;
    font-size: 1.4rem;
}

/* Get Involved Section */
.get-involved {
    background-color: var(--bg-secondary);
}

.tagline {
    text-align: center;
    font-size: 2.4rem;
    font-style: italic;
    margin-bottom: 4rem;
}

.involvement-ways {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(25rem, 1fr));
    gap: 3rem;
}

.way {
    text-align: center;
    padding: 3rem 2rem;
    border-radius: 1rem;
    background-color: var(--card-bg);
    box-shadow: var(--card-shadow);
}

.way .icon {
    font-size: 4rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.way h3 {
    margin-bottom: 1rem;
}

.way p {
    margin-bottom: 2rem;
}

.social-share {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.social-share a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 4rem;
    height: 4rem;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--white);
    font-size: 1.8rem;
    transition: var(--transition);
}

.social-share a:hover {
    background-color: var(--primary-color);
    transform: translateY(-0.3rem);
}

/* Contact Section */
.contact {
    background-color: var(--bg-color);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 5rem;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-detail {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.contact-detail i {
    font-size: 2.5rem;
    color: var(--primary-color);
}

.contact-detail p {
    margin-bottom: 0;
}

.contact-form form {
    background-color: var(--bg-secondary);
    padding: 3rem;
    border-radius: 1rem;
    box-shadow: var(--card-shadow);
}

.form-group {
    margin-bottom: 2rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1.2rem;
    border: 1px solid var(--input-border);
    border-radius: 0.5rem;
    font-family: 'Poppins', sans-serif;
    font-size: 1.6rem;
    background-color: var(--input-bg);
    color: var(--input-text);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* Footer */
footer {
    background-color: var(--footer-bg);
    color: var(--footer-text);
    padding: 5rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(20rem, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-logo {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.footer-logo-img {
    width: 70px;
    height: auto;
    margin-bottom: 15px;
}

.footer-logo h2 {
    color: var(--white);
    margin-bottom: 1rem;
}

.quick-links h3,
.footer-social h3 {
    color: var(--white);
    margin-bottom: 2rem;
}

.quick-links ul li {
    margin-bottom: 1rem;
}

.quick-links ul li a {
    color: var(--footer-text);
    opacity: 0.8;
}

.quick-links ul li a:hover {
    color: var(--footer-text);
    opacity: 1;
}

.social-icons {
    display: flex;
    gap: 1.5rem;
}

.social-icons a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 4rem;
    height: 4rem;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--white);
    font-size: 1.8rem;
    transition: var(--transition);
}

.social-icons a:hover {
    background-color: var(--primary-color);
    transform: translateY(-0.3rem);
}

.copyright {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* Registration Certificate Section */
.registration {
    background-color: var(--bg-secondary);
    padding: 8rem 0;
}

.certificate-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
    align-items: center;
}

.certificate-info {
    padding: 2rem;
}

.certificate-info h3 {
    margin-bottom: 1.5rem;
    color: var(--primary-color);
}

.certificate-info p {
    margin-bottom: 2.5rem;
}

.certificate-btn {
    margin-top: 1rem;
}

.certificate-image {
    text-align: center;
}

.certificate {
    max-width: 100%;
    box-shadow: var(--card-shadow);
    border-radius: 1rem;
    transition: transform 0.3s ease;
}

.certificate:hover {
    transform: scale(1.02);
}

/* Responsive Styles */
@media screen and (max-width: 991px) {
    html {
        font-size: 55%;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
        gap: 1.5rem;
    }
    
    .cta-buttons .btn {
        width: 20rem;
    }
    
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .president {
        margin-top: 3rem;
    }
    
    .certificate-container {
        grid-template-columns: 1fr;
    }
    
    .certificate-info {
        text-align: center;
        order: 1;
    }
    
    .certificate-image {
        order: 0;
        margin-bottom: 2rem;
    }
    
    .contact-wrapper {
        grid-template-columns: 1fr;
    }
}

@media screen and (max-width: 768px) {
    html {
        font-size: 50%;
    }
    
    h1 {
        font-size: 4rem;
    }
    
    h2 {
        font-size: 3.2rem;
    }
    
    .menu-toggle {
        display: block;
    }
    
    nav ul {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: var(--white);
        flex-direction: column;
        align-items: center;
        padding: 2rem 0;
        box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
        transform: translateY(-120%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }
    
    nav.active ul {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    nav ul li {
        margin: 1.5rem 0;
    }
    
    .hero h1 {
        font-size: 4.5rem;
    }
}

@media screen and (max-width: 576px) {
    .hero h1 {
        font-size: 3.8rem;
    }
    
    .hero p {
        font-size: 1.8rem;
    }
    
    .work-grid,
    .reasons,
    .involvement-ways {
        grid-template-columns: 1fr;
    }
    
    .media-carousel {
        flex-direction: column;
        align-items: center;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .quick-links ul,
    .social-icons {
        justify-content: center;
    }
}

/* Animations */
@keyframes fade-in {
    from {
        opacity: 0;
        transform: translateY(2rem);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.section-header, .about-content, .reason, .work-card, .media-item, .way {
    opacity: 0;
}

.fade-in {
    animation: fade-in 0.8s ease-out forwards;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 1rem;
}

::-webkit-scrollbar-track {
    background-color: var(--light-gray);
}

::-webkit-scrollbar-thumb {
    background-color: var(--primary-color);
    border-radius: 1rem;
}

::-webkit-scrollbar-thumb:hover {
    background-color: var(--dark-green);
}