/* --- Variables & Reset --- */
:root {
    /* Colors */
    --color-primary: #005F73; /* Deep Teal/Blue */
    --color-primary-dark: #003e4d;
    --color-secondary: #FF5500; /* Ultra Bright Vibrant Orange */
    --color-secondary-hover: #CC4400;
    --color-accent: #94D2BD; /* Soft Green/Blue */
    --color-background: #f0f7f9; /* Very little teal background */
    --color-surface: rgba(255, 255, 255, 0.9);
    --color-text: #25282B;
    --color-text-light: #5A5D60;
    --color-border: rgba(0, 95, 115, 0.1);

    /* Typography */
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 8rem;

    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
    --shadow-md: 0 6px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 12px 24px rgba(0,0,0,0.12);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease-in-out;
}

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

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

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

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

ul {
    list-style: none;
}

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

/* --- Utilities --- */
.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

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

.btn {
    display: inline-block;
    padding: 0.8rem 1.6rem;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    border: none;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn:active {
    transform: scale(0.98);
}

.btn-primary {
    background-color: var(--color-secondary);
    color: white;
}
.btn-primary:hover {
    background-color: var(--color-secondary-hover);
    box-shadow: 0 4px 12px rgba(238, 155, 0, 0.3);
}

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

/* --- Navigation --- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: var(--spacing-sm) 0;
    transition: background-color 0.3s ease, padding 0.3s ease;
}

.navbar.scrolled {
    background-color: rgba(253, 251, 247, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    padding: 0.5rem 0;
}

.navbar.scrolled .logo {
    color: var(--color-primary);
}

.navbar.scrolled .nav-links a {
    color: var(--color-text);
}

.navbar.scrolled .nav-donate {
    color: white !important;
}

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

.logo {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.5rem;
    color: white; /* Default white on Hero */
}

.logo span {
    color: var(--color-secondary);
}

.nav-links {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.nav-links a {
    color: white;
    font-weight: 500;
    position: relative;
}

.nav-links a:not(.btn)::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -4px;
    left: 0;
    background-color: var(--color-secondary);
    transition: width 0.3s ease;
}

.nav-links a:not(.btn):hover::after {
    width: 100%;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-menu-btn .bar {
    display: block;
    width: 25px;
    height: 3px;
    background-color: white; /* White on Hero */
    margin: 5px 0;
    transition: 0.3s;
}

.navbar.scrolled .mobile-menu-btn .bar {
    background-color: var(--color-primary);
}

/* --- Hero Section --- */
.hero {
    position: relative;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background-image: url('https://images.unsplash.com/photo-1488521787991-ed7bbaae773c?q=80&w=2670&auto=format&fit=crop'); /* Placeholder Charity Image */
    background-size: cover;
    background-position: center;
    color: white;
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(rgba(0, 95, 115, 0.8), rgba(0, 48, 73, 0.7));
}

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

.hero h1 {
    font-size: 3.5rem;
    color: white;
    margin-bottom: var(--spacing-md);
    letter-spacing: -1px;
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-lg);
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
}

.scroll-down {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    color: white;
    animation: bounce 2s infinite;
    opacity: 0.8;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translate(-50%, 0); }
    40% { transform: translate(-50%, -10px); }
    60% { transform: translate(-50%, -5px); }
}

/* --- Sections General --- */
.section {
    padding: var(--spacing-xl) 0;
}

.section-header {
    margin-bottom: var(--spacing-lg);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.section-title {
    font-size: 2.5rem;
    color: var(--color-primary);
}

.section-subtitle {
    color: var(--color-text-light);
    font-size: 1.1rem;
}

/* --- Mission Cards --- */
.mission-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.mission-card {
    background: var(--color-surface);
    padding: var(--spacing-md);
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid transparent;
}

.mission-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-accent);
}

.mission-card .icon-box {
    width: 60px;
    height: 60px;
    background-color: rgba(148, 210, 189, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary);
}

.mission-card h3 {
    font-size: 1.5rem;
}

.mission-card p {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-sm);
}

.read-more {
    font-weight: 600;
    color: var(--color-primary);
    display: inline-flex;
    align-items: center;
}
.read-more:hover {
    text-decoration: underline;
}

/* --- Stats Section --- */
.stats-section {
    background-color: var(--color-primary);
    color: white;
    padding: var(--spacing-lg) 0;
}

.stats-container {
    display: flex;
    justify-content: space-around;
    align-items: center;
    flex-wrap: wrap;
    text-align: center;
}

.stat-item h3, .stat-item span {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 800;
    color: var(--color-secondary);
    display: inline-block;
}

.stat-item p {
    font-size: 1.2rem;
    opacity: 0.9;
}

/* --- Footer --- */
.footer {
    background-color: var(--color-primary-dark);
    color: white;
    padding-top: var(--spacing-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-logo {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 800;
    color: white;
    display: block;
    margin-bottom: var(--spacing-sm);
}
.footer-logo span { color: var(--color-secondary); }

.footer-links h4, .footer-newsletter h4 {
    margin-bottom: var(--spacing-sm);
    color: var(--color-accent);
}

.footer-links ul li {
    margin-bottom: 0.5rem;
}

.footer-links ul li a {
    color: rgba(255,255,255,0.7);
}
.footer-links ul li a:hover {
    color: white;
}

.newsletter-form {
    display: flex;
    gap: 0.5rem;
}

.newsletter-form input {
    padding: 0.5rem 1rem;
    border-radius: 50px;
    border: none;
    flex: 1;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding: var(--spacing-sm) 0;
    font-size: 0.9rem;
    color: rgba(255,255,255,0.5);
}

/* --- Animations --- */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s ease forwards;
}

.fade-in {
    opacity: 0;
    animation: fadeIn 0.8s ease forwards;
}

.delay-100 { animation-delay: 0.1s; }
.delay-200 { animation-delay: 0.2s; }
.delay-300 { animation-delay: 0.3s; }

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

@keyframes fadeIn {
    to { opacity: 1; }
}

/* --- Responsive --- */
@media (max-width: 768px) {
    .hero h1 { font-size: 2.5rem; }
    
    .mobile-menu-btn { display: block; z-index: 1001; }
    
    .nav-links {
        position: fixed;
        right: -100%;
        top: 0;
        height: 100vh;
        width: 70%;
        background-color: var(--color-background);
        flex-direction: column;
        justify-content: center;
        transition: 0.3s ease;
        box-shadow: -5px 0 15px rgba(0,0,0,0.1);
    }
    
    .nav-links.active { right: 0; }
    
    .nav-links a { color: var(--color-text); font-size: 1.2rem; }
    .nav-links a.btn { color: white; }

    /* When menu is open, make hamburger dark if needed, but it's handled by z-index usually */
}