/* =====================================================
   Variables CSS
   ===================================================== */
:root {
    --primary-color: #2C5F2D;
    --secondary-color: #97BC62;
    --accent-color: #FF6B35;
    --dark-color: #1A1A1A;
    --light-color: #F5F5F5;
    --white: #FFFFFF;
    --text-dark: #333333;
    --text-light: #666666;
    --border-color: #E0E0E0;
    
    --font-primary: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --font-secondary: Georgia, 'Times New Roman', serif;
    
    --transition: all 0.3s ease;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.15);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    color: var(--text-dark);
    line-height: 1.6;
    background-color: var(--white);
    overflow-x: hidden;
}

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

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

ul {
    list-style: none;
}

/* =====================================================
   Container & Utilities
   ===================================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 15px;
}

.section-underline {
    width: 80px;
    height: 4px;
    background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
    margin: 0 auto 20px;
    border-radius: 2px;
}

.section-description {
    font-size: 1.1rem;
    color: var(--text-light);
    max-width: 700px;
    margin: 0 auto;
}

/* =====================================================
   Buttons
   ===================================================== */
.btn {
    display: inline-block;
    padding: 14px 32px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 50px;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    text-align: center;
}

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

.btn-primary:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

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

.btn-donate-hero {
    background: var(--accent-color);
    color: var(--white);
    border: 2px solid var(--accent-color);
    box-shadow: 0 4px 15px rgba(255, 107, 53, 0.3);
}

.btn-donate-hero:hover {
    background: #e55a28;
    border-color: #e55a28;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 107, 53, 0.4);
}

/* =====================================================
   Navigation
   ===================================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: var(--white);
    box-shadow: var(--shadow-md);
    z-index: 1000;
    transition: var(--transition);
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

.logo h1 {
    font-size: 1.8rem;
    color: var(--primary-color);
    font-weight: 700;
}

.logo-subtitle {
    font-size: 0.75rem;
    color: var(--text-light);
    margin-top: -5px;
}

.nav-menu {
    display: flex;
    gap: 30px;
    align-items: center;
}

.nav-link {
    color: var(--text-dark);
    font-weight: 500;
    font-size: 1rem;
    position: relative;
    padding: 5px 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 2px;
    transition: var(--transition);
}

/* Donate Button in Navigation */
.btn-donate-nav {
    display: inline-block;
    padding: 10px 24px;
    background: var(--accent-color);
    color: var(--white);
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.95rem;
    transition: var(--transition);
    box-shadow: 0 2px 8px rgba(255, 107, 53, 0.3);
}

.btn-donate-nav:hover {
    background: #e55a28;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 107, 53, 0.4);
}

/* =====================================================
   Hero Section
   ===================================================== */
.hero {
    position: relative;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    overflow: hidden;
    margin-top: 70px;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 600"><path d="M0,300 Q300,100 600,300 T1200,300 L1200,600 L0,600 Z" fill="rgba(255,255,255,0.05)"/></svg>');
    background-size: cover;
    opacity: 0.3;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.2);
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: var(--white);
    max-width: 800px;
    padding: 0 20px;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 20px;
    animation: fadeInUp 1s ease;
}

.hero-subtitle {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 20px;
    animation: fadeInUp 1s ease 0.2s;
    animation-fill-mode: both;
}

.hero-description {
    font-size: 1.2rem;
    margin-bottom: 40px;
    opacity: 0.95;
    animation: fadeInUp 1s ease 0.4s;
    animation-fill-mode: both;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 1s ease 0.6s;
    animation-fill-mode: both;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* =====================================================
   About Section
   ===================================================== */
.about {
    background: var(--light-color);
}

.about-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.about-card {
    background: var(--white);
    padding: 40px 30px;
    border-radius: 15px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.about-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.card-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 25px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.card-icon svg {
    width: 40px;
    height: 40px;
    color: var(--white);
}

.about-card h3 {
    font-size: 1.5rem;
    color: var(--dark-color);
    margin-bottom: 15px;
}

.about-card p {
    color: var(--text-light);
    line-height: 1.8;
}

/* =====================================================
   Objectives Section
   ===================================================== */
.objectives {
    background: var(--white);
}

.objectives-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.objective-item {
    position: relative;
    padding: 40px 30px;
    background: var(--light-color);
    border-radius: 15px;
    transition: var(--transition);
    border-left: 4px solid var(--primary-color);
}

.objective-item:hover {
    transform: translateX(10px);
    background: var(--white);
    box-shadow: var(--shadow-md);
}

.objective-number {
    font-size: 3rem;
    font-weight: 800;
    color: var(--secondary-color);
    opacity: 0.3;
    margin-bottom: 15px;
}

.objective-item h3 {
    font-size: 1.4rem;
    color: var(--dark-color);
    margin-bottom: 15px;
}

.objective-item p {
    color: var(--text-light);
    line-height: 1.8;
}

/* =====================================================
   Activities Section
   ===================================================== */
.activities {
    background: var(--light-color);
}

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

.activity-card {
    background: var(--white);
    padding: 40px 30px;
    border-radius: 15px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.activity-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
    transform: scaleX(0);
    transition: var(--transition);
}

.activity-card:hover::before {
    transform: scaleX(1);
}

.activity-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.activity-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.activity-card h3 {
    font-size: 1.3rem;
    color: var(--dark-color);
    margin-bottom: 15px;
}

.activity-card p {
    color: var(--text-light);
    line-height: 1.7;
}

/* =====================================================
   Donations Section
   ===================================================== */
.donations {
    background: var(--white);
}

.donation-content {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 50px;
    margin-top: 40px;
}

.donation-info {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.donation-card {
    background: var(--light-color);
    padding: 30px;
    border-radius: 15px;
    transition: var(--transition);
}

.donation-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.donation-icon {
    font-size: 3rem;
    margin-bottom: 15px;
}

.donation-card h3 {
    font-size: 1.4rem;
    color: var(--dark-color);
    margin-bottom: 15px;
}

.donation-list {
    list-style: none;
    padding: 0;
}

.donation-list li {
    padding: 8px 0;
    color: var(--text-light);
    font-size: 1rem;
}

.donation-card p {
    color: var(--text-light);
    line-height: 1.8;
}

.donation-form-wrapper {
    background: var(--light-color);
    padding: 40px;
    border-radius: 15px;
    box-shadow: var(--shadow-sm);
}

.paypal-section h3 {
    font-size: 1.8rem;
    color: var(--dark-color);
    margin-bottom: 10px;
    text-align: center;
}

.paypal-description {
    text-align: center;
    color: var(--text-light);
    margin-bottom: 30px;
}

.paypal-form {
    max-width: 500px;
    margin: 0 auto;
}

.donation-amounts {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
    margin-bottom: 25px;
}

.amount-option {
    position: relative;
    cursor: pointer;
}

.amount-option input[type="radio"] {
    position: absolute;
    opacity: 0;
}

.amount-option span {
    display: block;
    padding: 15px;
    background: var(--white);
    border: 2px solid var(--border-color);
    border-radius: 10px;
    text-align: center;
    font-weight: 600;
    font-size: 1.2rem;
    color: var(--text-dark);
    transition: var(--transition);
}

.amount-option:hover span {
    border-color: var(--primary-color);
    background: rgba(44, 95, 45, 0.05);
}

.amount-option input[type="radio"]:checked + span {
    background: var(--primary-color);
    color: var(--white);
    border-color: var(--primary-color);
}

.custom-amount {
    margin-bottom: 25px;
}

.custom-amount label {
    display: block;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--dark-color);
}

.amount-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.custom-amount input {
    width: 100%;
    padding: 12px 40px 12px 15px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1.1rem;
    transition: var(--transition);
}

.custom-amount input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(44, 95, 45, 0.1);
}

.currency {
    position: absolute;
    right: 15px;
    font-weight: 600;
    color: var(--text-light);
    font-size: 1.1rem;
}

.btn-paypal {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    background: #0070ba;
    color: var(--white);
    padding: 16px 32px;
    font-size: 1.1rem;
    font-weight: 600;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition);
}

.btn-paypal:hover {
    background: #005a94;
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(0, 112, 186, 0.3);
}

.paypal-icon {
    width: 24px;
    height: 24px;
}

.secure-note {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 20px;
    padding: 15px;
    background: rgba(44, 95, 45, 0.05);
    border-radius: 8px;
    color: var(--primary-color);
    font-size: 0.95rem;
    font-weight: 500;
}

.secure-note svg {
    width: 20px;
    height: 20px;
}

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

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 60px;
    margin-top: 40px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.contact-item {
    display: flex;
    gap: 20px;
    padding: 25px;
    background: var(--light-color);
    border-radius: 10px;
    transition: var(--transition);
}

.contact-item:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: translateX(10px);
}

.contact-item:hover .contact-icon {
    background: var(--white);
    color: var(--primary-color);
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: var(--transition);
}

.contact-icon svg {
    width: 24px;
    height: 24px;
}

.contact-item h4 {
    font-size: 1.1rem;
    margin-bottom: 5px;
}

.contact-item p {
    color: var(--text-light);
}

.contact-item:hover p {
    color: var(--white);
}

.contact-form {
    background: var(--light-color);
    padding: 40px;
    border-radius: 15px;
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--dark-color);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(44, 95, 45, 0.1);
}

.contact-form .btn {
    width: 100%;
}

/* =====================================================
   Footer
   ===================================================== */
.footer {
    background: var(--dark-color);
    color: var(--white);
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: var(--secondary-color);
}

.footer-section h4 {
    font-size: 1.2rem;
    margin-bottom: 15px;
    color: var(--white);
}

.footer-section p {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.8;
}

.footer-legal {
    font-size: 0.9rem;
    margin-top: 10px;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--secondary-color);
    padding-left: 10px;
}

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

.social-links a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--secondary-color);
    transform: translateY(-5px);
}

.social-links svg {
    width: 20px;
    height: 20px;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
}

/* =====================================================
   Responsive Design
   ===================================================== */
@media (max-width: 968px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: var(--white);
        flex-direction: column;
        padding: 40px 20px;
        box-shadow: var(--shadow-lg);
        transition: var(--transition);
    }

    .nav-menu.active {
        left: 0;
    }

    .menu-toggle {
        display: flex;
    }

    .menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(8px, 8px);
    }

    .menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }

    .btn-donate-nav {
        margin-top: 20px;
        text-align: center;
        width: 100%;
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .donation-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}

@media (max-width: 768px) {
    .section-title {
        font-size: 2rem;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.2rem;
    }

    .hero-description {
        font-size: 1rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .section {
        padding: 60px 0;
    }

    .about-content,
    .objectives-grid,
    .activities-grid {
        grid-template-columns: 1fr;
    }

    .donation-amounts {
        grid-template-columns: 1fr;
    }

    .donation-form-wrapper {
        padding: 25px;
    }
}

@media (max-width: 480px) {
    .logo h1 {
        font-size: 1.4rem;
    }

    .logo-subtitle {
        font-size: 0.65rem;
    }

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

    .section-title {
        font-size: 1.7rem;
    }

    .contact-form {
        padding: 25px;
    }
}