* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    font-family: 'Poppins', sans-serif;
    background: #f9fdf9;
    color: #1e2a1e;
    line-height: 1.6;
}
.container {
    max-width: 1300px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}
header {
    background: #0f3b1f;
    color: white;
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}
.logo h1 { font-size: 1.5rem; font-weight: 600; }
.nav-menu {
    list-style: none;
    display: flex;
    gap: 1.5rem;
}
.nav-menu li { position: relative; }
.nav-menu a {
    color: white;
    text-decoration: none;
    font-weight: 500;
}
.nav-menu a:hover, .nav-menu a.active { color: #a5d6a7; }
.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: #0f3b1f;
    list-style: none;
    padding: 0.5rem 0;
    border-radius: 8px;
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transition: 0.2s;
}
.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
}
.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}
.hamburger .bar {
    width: 25px;
    height: 3px;
    background: white;
    margin: 3px 0;
}
.page-container {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 2rem;
}
h1 {
    font-size: 2.5rem;
    color: #0f3b1f;
    margin-bottom: 0.5rem;
}
.subtitle {
    font-size: 1.2rem;
    color: #2e7d32;
    margin-bottom: 2rem;
}
.pledge-section, .volunteer-section, .tips-section {
    background: white;
    border-radius: 24px;
    padding: 2rem;
    margin: 2rem 0;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}
.pledge-section h2, .volunteer-section h2, .tips-section h2 {
    margin-bottom: 1rem;
}
.pledge-form, .volunteer-form {
    margin-top: 1rem;
}
.form-group {
    margin-bottom: 1rem;
}
.form-group label {
    display: block;
    margin-bottom: 0.3rem;
    font-weight: 500;
}
.form-group select, .form-group input {
    width: 100%;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 12px;
    font-family: inherit;
}
.form-row {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}
.form-row .form-group {
    flex: 1;
}
.btn-primary {
    background: #2e7d32;
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 50px;
    cursor: pointer;
    font-weight: 600;
}
.btn-secondary {
    background: #ff9800;
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 50px;
    cursor: pointer;
    font-weight: 600;
}
.pledge-counter {
    margin-top: 1rem;
    text-align: center;
    font-size: 1.1rem;
    background: #e8f5e9;
    padding: 10px;
    border-radius: 40px;
}
.tips-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-top: 1rem;
}
.tip {
    background: #f1f8e9;
    border-radius: 20px;
    padding: 1.5rem;
    text-align: center;
}
.tip i {
    font-size: 2rem;
    color: #2e7d32;
    margin-bottom: 0.5rem;
}
.error-message, .success-message, .info-message {
    padding: 10px;
    border-radius: 12px;
    margin-bottom: 1rem;
}
.error-message { background: #ffe6e6; color: #c62828; }
.success-message { background: #e6ffe6; color: #2e7d32; }
.info-message { background: #e3f2fd; color: #0d47a1; }
footer {
    background: #0f3b1f;
    color: white;
    text-align: center;
    padding: 2rem;
    margin-top: 2rem;
}
@media (max-width: 768px) {
    .hamburger { display: flex; }
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background: #0f3b1f;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        padding: 2rem 0;
    }
    .nav-menu.active { left: 0; }
}