:root {
    /* Colors - Vibrant & Modern Palette */
    --primary-color: #6B3F91;
    /* Deep Purple */
    --primary-light: #8E54B0;
    /* Lighter Purple for gradients/hover */
    --secondary-color: #E91E63;
    /* Vibrant Pink */
    --secondary-light: #FF4081;
    /* Lighter Pink */
    --accent-color: #9C27B0;
    /* Accent Purple */

    --text-color: #2D3748;
    /* Dark Gray for better readability */
    --text-light: #718096;
    /* Medium Gray for subtitles */
    --white: #ffffff;
    --off-white: #F7FAFC;
    /* Very light gray background */

    --success-color: #48BB78;
    --warning-color: #ECC94B;

    /* Typography */
    --font-main: 'Inter', sans-serif;
    --font-heading: 'Outfit', sans-serif;
    /* Modern, geometric heading font */

    /* Spacing - Increased for "breathability" */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1.5rem;
    --spacing-md: 3rem;
    --spacing-lg: 6rem;
    --spacing-xl: 10rem;

    /* Border Radius */
    --border-radius-sm: 8px;
    --border-radius-md: 16px;
    --border-radius-lg: 24px;
    --border-radius-pill: 50px;

    /* Shadows - Smooth & Layered */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07), 0 2px 4px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1), 0 4px 6px rgba(0, 0, 0, 0.05);
    --shadow-hover: 0 20px 25px rgba(0, 0, 0, 0.1), 0 10px 10px rgba(0, 0, 0, 0.04);

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
}

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

body {
    font-family: var(--font-main);
    color: var(--text-color);
    line-height: 1.7;
    background-color: var(--off-white);
    -webkit-font-smoothing: antialiased;
}

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

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

ul {
    list-style: none;
}

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

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

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

.mb-sm {
    margin-bottom: var(--spacing-sm);
}

.mb-md {
    margin-bottom: var(--spacing-md);
}

.mb-lg {
    margin-bottom: var(--spacing-lg);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 32px;
    border-radius: var(--border-radius-pill);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all var(--transition-normal);
    border: none;
    box-shadow: var(--shadow-md);
    letter-spacing: 0.5px;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: var(--white);
}

.btn-secondary {
    background: linear-gradient(135deg, var(--secondary-color), var(--secondary-light));
    color: var(--white);
}

/* Header & Nav */
header {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 1rem 0;
}

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

.logo img {
    height: 60px;
    /* Slightly larger logo */
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

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

.nav-links a:hover {
    color: var(--primary-color);
}

.nav-links a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -4px;
    left: 0;
    background-color: var(--secondary-color);
    transition: width var(--transition-normal);
}

.nav-links a:hover::after {
    width: 100%;
}

/* Hero Section */
.hero {
    min-height: 85vh;
    background: linear-gradient(rgba(107, 63, 145, 0.85), rgba(233, 30, 99, 0.8)), url('../assets/images/hero-bg.jpg');
    /* Placeholder for hero bg */
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    color: var(--white);
    text-align: center;
    position: relative;
    overflow: hidden;
}

/* Fallback if no hero image */
.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
}


.hero-content {
    max-width: 800px;
    margin: 0 auto;
    z-index: 1;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--white);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    animation: fadeInUp 1s ease-out;
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.9;
    animation: fadeInUp 1s ease-out 0.2s backwards;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    animation: fadeInUp 1s ease-out 0.4s backwards;
}

/* Feature Cards (Diferenciais) */
.features {
    padding: var(--spacing-lg) 0;
    background-color: var(--off-white);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.feature-card {
    background: var(--white);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    text-align: center;
    border: 1px solid rgba(0, 0, 0, 0.03);
}

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

.feature-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, rgba(107, 63, 145, 0.1), rgba(233, 30, 99, 0.1));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-sm);
    color: var(--primary-color);
    font-size: 2rem;
    transition: all var(--transition-normal);
}

.feature-card:hover .feature-icon {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
    transform: scale(1.1);
}

.feature-card h3 {
    margin-bottom: var(--spacing-xs);
    font-size: 1.5rem;
}

.feature-card p {
    color: var(--text-light);
}

/* Content Cards (Projects, News) */
.content-card {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    transition: all var(--transition-normal);
    height: 100%;
    display: flex;
    flex-direction: column;
}

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

.content-card img {
    width: 100%;
    height: 220px;
    object-fit: cover;
    transition: transform var(--transition-normal);
}

.content-card:hover img {
    transform: scale(1.05);
}

.content-card-body {
    padding: var(--spacing-md);
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.content-card h3,
.content-card h2 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-xs);
    color: var(--primary-color);
}

.content-card p {
    color: var(--text-light);
    margin-bottom: var(--spacing-sm);
    flex-grow: 1;
}

.content-card .btn-link {
    color: var(--secondary-color);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    margin-top: auto;
}

.content-card .btn-link:hover {
    color: var(--secondary-light);
    padding-left: 5px;
}

/* Forms */
.form-group {
    margin-bottom: var(--spacing-sm);
}

.form-label {
    display: block;
    margin-bottom: 5px;
    font-weight: 600;
    color: var(--text-color);
}

.form-control {
    width: 100%;
    padding: 12px;
    border: 1px solid #e2e8f0;
    border-radius: var(--border-radius-sm);
    font-family: var(--font-main);
    font-size: 1rem;
    transition: all var(--transition-normal);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(107, 63, 145, 0.1);
}

/* Page Header (Internal Pages) */
.page-header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
    padding: var(--spacing-lg) 0;
    text-align: center;
    margin-bottom: var(--spacing-md);
}

.page-header h1 {
    color: var(--white);
    font-size: 2.5rem;
    margin-bottom: var(--spacing-xs);
}

.page-header p {
    font-size: 1.1rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}

/* Footer */
footer {
    background-color: var(--primary-color);
    color: var(--white);
    padding: var(--spacing-lg) 0 var(--spacing-md);
    margin-top: var(--spacing-xl);
}

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

.footer-section h3 {
    color: var(--white);
    margin-bottom: var(--spacing-sm);
    font-size: 1.25rem;
    position: relative;
    padding-bottom: 0.5rem;
}

.footer-section h3::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 40px;
    height: 3px;
    background-color: var(--secondary-color);
    border-radius: 2px;
}

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

.footer-section ul li a {
    opacity: 0.8;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

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

/* Responsive */
@media (max-width: 768px) {
    :root {
        --spacing-lg: 4rem;
        --spacing-xl: 6rem;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .nav-links {
        display: none;
        /* Mobile menu logic needed in JS */
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--white);
        flex-direction: column;
        padding: var(--spacing-md);
        box-shadow: var(--shadow-lg);
    }

    .nav-links.active {
        display: flex;
    }

    .mobile-menu-btn {
        display: block;
        font-size: 1.5rem;
        color: var(--primary-color);
    }

    .fixed-donate-btn {
        display: flex;
        position: fixed;
        bottom: 20px;
        right: 20px;
        z-index: 1001;
        box-shadow: var(--shadow-lg);
    }
}