/* =====================================================
   ACF - Associação Criança Mais Feliz
   Modern Institutional CSS
   ===================================================== */

/* Root Variables */
:root {
    /* Colors - Institutional Palette */
    --primary-color: #1e40af;          /* Professional Blue */
    --primary-dark: #1e3a8a;           /* Darker Blue */
    --primary-light: #3b82f6;          /* Lighter Blue */
    --secondary-color: #f59e0b;        /* Warm Orange */
    --secondary-light: #fbbf24;        /* Light Orange */
    
    /* Light Theme Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-tertiary: #f3f4f6;
    --text-primary: #000000;        /* Pure black for main text */
    --text-secondary: #1f2937;      /* Dark gray for secondary text */
    --text-tertiary: #4b5563;       /* Medium gray for tertiary text */
    --border-color: #e5e7eb;
    --shadow-color: rgba(0, 0, 0, 0.1);
    
    /* Neutral Colors */
    --white: #ffffff;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    
    /* Status Colors */
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    --info: #3b82f6;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-secondary: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    /* Font Weights */
    --font-light: 300;
    --font-regular: 400;
    --font-medium: 500;
    --font-semibold: 600;
    --font-bold: 700;
    --font-extrabold: 800;
    
    /* Spacing */
    --spacing-xs: 0.5rem;      /* 8px */
    --spacing-sm: 0.75rem;     /* 12px */
    --spacing-md: 1rem;        /* 16px */
    --spacing-lg: 1.5rem;      /* 24px */
    --spacing-xl: 2rem;        /* 32px */
    --spacing-2xl: 3rem;       /* 48px */
    --spacing-3xl: 4rem;       /* 64px */
    --spacing-4xl: 6rem;       /* 96px */
    
    /* Border Radius */
    --radius-sm: 0.375rem;     /* 6px */
    --radius-md: 0.5rem;       /* 8px */
    --radius-lg: 0.75rem;      /* 12px */
    --radius-xl: 1rem;         /* 16px */
    --radius-2xl: 1.5rem;      /* 24px */
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.2s ease;
    --transition-slow: 0.3s ease;
    
    /* Z-index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    font-weight: var(--font-regular);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    overflow-x: hidden;
    transition: background-color var(--transition-base), color var(--transition-base);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-secondary);
    font-weight: var(--font-bold);
    line-height: 1.2;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

h1 { font-size: 3.5rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 2rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1.125rem; }

p {
    margin-bottom: var(--spacing-md);
    line-height: 1.7;
    color: var(--text-primary);
}

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

a:hover {
    color: var(--primary-dark);
}

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

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* Section */
.section {
    padding: var(--spacing-4xl) 0;
}

.section--bg {
    background-color: var(--bg-secondary);
}

.section--primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
}

/* Section Headers */
.section__header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.section__subtitle {
    display: inline-block;
    font-size: 0.875rem;
    font-weight: var(--font-semibold);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--primary-color);
    background-color: rgba(30, 64, 175, 0.1);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    margin-bottom: var(--spacing-md);
}

.section__subtitle--white {
    color: var(--white);
    background-color: rgba(255, 255, 255, 0.1);
}

.section__title {
    font-size: 2.5rem;
    font-weight: var(--font-bold);
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.section__title--white {
    color: var(--white);
}

.section__description {
    font-size: 1.125rem;
    color: var(--text-tertiary);
    line-height: 1.6;
    margin-bottom: 0;
}

.section__description--white {
    color: rgba(255, 255, 255, 0.9);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 0.875rem;
    font-weight: var(--font-medium);
    text-decoration: none;
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-base);
    text-align: center;
    white-space: nowrap;
}

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

.btn--primary:hover {
    background-color: var(--primary-dark);
    border-color: var(--primary-dark);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn--outline {
    background-color: transparent;
    color: var(--primary-color);
    border-color: var(--primary-color);
}

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

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

.btn--white:hover {
    background-color: var(--gray-100);
    color: var(--primary-dark);
    border-color: var(--gray-100);
}

.btn--small {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: 0.75rem;
}

.btn--large {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1rem;
}

.btn--full {
    width: 100%;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    z-index: var(--z-fixed);
    transition: var(--transition-base);
}

[data-theme="dark"] .header {
    background-color: rgba(17, 24, 39, 0.95);
}

.header.scrolled {
    box-shadow: var(--shadow-md);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.nav__brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.nav__logo {
    width: 40px;
    height: 40px;
}

.nav__title {
    font-family: var(--font-secondary);
    font-size: 1.5rem;
    font-weight: var(--font-bold);
    color: var(--primary-color);
}

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

.nav__list {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
    list-style: none;
}

.nav__link {
    font-weight: var(--font-medium);
    color: var(--text-primary);
    position: relative;
    transition: var(--transition-base);
}

.nav__link:hover,
.nav__link.active {
    color: var(--primary-color);
}

.nav__link.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--primary-color);
    border-radius: var(--radius-full);
}

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

.theme-toggle {
    position: relative;
    width: 50px;
    height: 26px;
    background-color: var(--gray-300);
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: var(--transition-base);
    overflow: hidden;
}

.theme-toggle:hover {
    background-color: var(--gray-400);
}

[data-theme="dark"] .theme-toggle {
    background-color: var(--primary-color);
}

.theme-toggle__light,
.theme-toggle__dark {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.875rem;
    transition: var(--transition-base);
}

.theme-toggle__light {
    left: 6px;
    color: var(--secondary-color);
    opacity: 1;
}

.theme-toggle__dark {
    right: 6px;
    color: var(--white);
    opacity: 0;
}

[data-theme="dark"] .theme-toggle__light {
    opacity: 0;
}

[data-theme="dark"] .theme-toggle__dark {
    opacity: 1;
}

.theme-toggle::before {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 22px;
    height: 22px;
    background-color: var(--white);
    border-radius: var(--radius-full);
    transition: var(--transition-base);
    box-shadow: var(--shadow-sm);
}

[data-theme="dark"] .theme-toggle::before {
    transform: translateX(24px);
    background-color: var(--gray-100);
}

.nav__toggle,
.nav__close {
    display: none;
    font-size: 1.5rem;
    color: var(--text-primary);
    cursor: pointer;
}

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

.hero__bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
}

.hero__image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero__overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        135deg,
        rgba(30, 64, 175, 0.8) 0%,
        rgba(30, 58, 138, 0.9) 100%
    );
    z-index: -1;
    transition: var(--transition-base);
}

/* Dark mode overlay - slightly darker */
[data-theme="dark"] .hero__overlay {
    background: linear-gradient(
        135deg,
        rgba(30, 64, 175, 0.85) 0%,
        rgba(30, 58, 138, 0.95) 100%
    );
}

/* Light mode overlay - maintains contrast */
[data-theme="light"] .hero__overlay {
    background: linear-gradient(
        135deg,
        rgba(30, 64, 175, 0.8) 0%,
        rgba(30, 58, 138, 0.9) 100%
    );
}

.hero__container {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-3xl);
}

.hero__content {
    max-width: 800px;
}

.hero__title {
    font-size: 4rem;
    font-weight: var(--font-extrabold);
    color: var(--white);
    margin-bottom: var(--spacing-lg);
    line-height: 1.1;
}

/* Hero text follows theme colors */
[data-theme="dark"] .hero__title {
    color: var(--text-color);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

[data-theme="light"] .hero__title {
    color: var(--text-color);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.hero__title--accent {
    color: var(--secondary-color);
}

.hero__subtitle {
    font-size: 1.25rem;
    color: var(--text-color);
    opacity: 0.9;
    margin-bottom: var(--spacing-xl);
    line-height: 1.6;
}

/* Subtitle with better readability on overlay */
[data-theme="dark"] .hero__subtitle {
    color: rgba(255, 255, 255, 0.95);
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.5);
}

[data-theme="light"] .hero__subtitle {
    color: rgba(255, 255, 255, 0.9);
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

.hero__buttons {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
    flex-wrap: wrap;
}

.hero__stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-xl);
    background-color: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: var(--transition-base);
}

/* Dark mode stats background */
[data-theme="dark"] .hero__stats {
    background-color: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* Light mode stats background */
[data-theme="light"] .hero__stats {
    background-color: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.stat {
    text-align: center;
}

.stat__number {
    font-size: 2.5rem;
    font-weight: var(--font-extrabold);
    color: var(--white);
    margin-bottom: var(--spacing-xs);
}

/* Stats numbers follow theme colors */
[data-theme="dark"] .stat__number {
    color: var(--text-color);
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
}

[data-theme="light"] .stat__number {
    color: var(--text-color);
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

.stat__label {
    font-size: 0.875rem;
    color: var(--text-color);
    opacity: 0.8;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Stats labels follow theme colors */
[data-theme="dark"] .stat__label {
    color: var(--text-color);
    opacity: 0.85;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.4);
}

[data-theme="light"] .stat__label {
    color: var(--text-color);
    opacity: 0.9;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.hero__scroll {
    position: absolute;
    bottom: var(--spacing-xl);
    left: 50%;
    transform: translateX(-50%);
    font-size: 1.5rem;
    color: var(--white);
    animation: bounce 2s infinite;
}

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

/* About Section */
.about__content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.about__text {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.about__mission,
.about__vision,
.about__values {
    display: flex;
    gap: var(--spacing-lg);
    align-items: flex-start;
}

.about__icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--white);
    flex-shrink: 0;
}

.about__subtitle {
    font-size: 1.25rem;
    font-weight: var(--font-semibold);
    color: var(--gray-900);
    margin-bottom: var(--spacing-sm);
}

.about__description {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 0;
}

.about__image {
    position: relative;
}

.about__img {
    width: 100%;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
}

/* Help Section */
.help__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.help__card {
    background-color: var(--bg-primary);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: 0 10px 15px -3px var(--shadow-color), 0 4px 6px -2px var(--shadow-color);
    transition: var(--transition-base);
    border: 1px solid var(--border-color);
}

.help__card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-2xl);
}

.help__image {
    width: 100%;
    height: 200px;
    overflow: hidden;
}

.help__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.help__content {
    padding: var(--spacing-xl);
}

.help__name {
    font-size: 1.5rem;
    font-weight: var(--font-bold);
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.help__age {
    font-size: 0.875rem;
    color: var(--primary-color);
    font-weight: var(--font-medium);
    margin-bottom: var(--spacing-md);
}

.help__description {
    color: var(--text-tertiary);
    line-height: 1.6;
    margin-bottom: var(--spacing-lg);
}

/* Campaigns Section */
.campaigns__tabs {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-3xl);
}

.tab__btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 0.875rem;
    font-weight: var(--font-medium);
    background-color: transparent;
    color: var(--text-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-base);
}

.tab__btn--active,
.tab__btn:hover {
    background-color: var(--primary-color);
    color: var(--white);
    border-color: var(--primary-color);
}

.tab__content {
    display: none;
}

.tab__content--active {
    display: block;
}

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

.campaign__card {
    background-color: var(--bg-primary);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: 0 4px 6px -1px var(--shadow-color), 0 2px 4px -1px var(--shadow-color);
    transition: var(--transition-base);
    cursor: pointer;
    border: 1px solid var(--border-color);
}

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

.campaign__card--featured {
    grid-column: span 2;
    display: grid;
    grid-template-columns: 1fr 1fr;
    cursor: default;
}

.campaign__image {
    position: relative;
    width: 100%;
    height: 200px;
    overflow: hidden;
}

.campaign__card--featured .campaign__image {
    height: auto;
}

.campaign__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.campaign__badge {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    background-color: var(--error);
    color: var(--white);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
    font-size: 0.75rem;
    font-weight: var(--font-semibold);
}

.campaign__content {
    padding: var(--spacing-xl);
}

.campaign__title {
    font-size: 1.25rem;
    font-weight: var(--font-semibold);
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.campaign__description {
    color: var(--text-tertiary);
    line-height: 1.6;
    margin-bottom: var(--spacing-lg);
}

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

.progress {
    width: 100%;
    height: 8px;
    background-color: var(--gray-200);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin-bottom: var(--spacing-xs);
}

.progress__bar {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
    border-radius: var(--radius-full);
    transition: width var(--transition-slow);
}

.progress__text {
    font-size: 0.875rem;
    color: var(--text-tertiary);
}

/* Partners Section */
.partners__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-xl);
    align-items: center;
}

.partner__card {
    background-color: var(--bg-primary);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: 0 4px 6px -1px var(--shadow-color), 0 2px 4px -1px var(--shadow-color);
    transition: var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
    height: 120px;
    border: 1px solid var(--border-color);
}

.partner__card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.partner__logo {
    max-width: 100%;
    max-height: 80px;
    width: auto;
    height: auto;
    filter: grayscale(100%) opacity(0.7);
    transition: var(--transition-base);
}

.partner__card:hover .partner__logo {
    filter: grayscale(0%) opacity(1);
}

/* Donate Section */
.donate__content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.donate__methods {
    display: flex;
    gap: var(--spacing-xl);
    margin: var(--spacing-xl) 0;
}

.method {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: rgba(255, 255, 255, 0.9);
    font-weight: var(--font-medium);
}

.method i {
    font-size: 1.25rem;
    color: var(--secondary-color);
}

.donate__actions {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.donate__info {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.875rem;
}

.donate__image {
    text-align: center;
}

.donate__qr {
    max-width: 300px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
}

/* Contact Section */
.contact__content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
}

.contact__info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.contact__card {
    display: flex;
    gap: var(--spacing-lg);
    padding: var(--spacing-xl);
    background-color: var(--bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: 0 4px 6px -1px var(--shadow-color), 0 2px 4px -1px var(--shadow-color);
    transition: var(--transition-base);
    border: 1px solid var(--border-color);
}

.contact__card:hover {
    box-shadow: var(--shadow-lg);
}

.contact__icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--white);
    flex-shrink: 0;
}

.contact__title {
    font-size: 1.125rem;
    font-weight: var(--font-semibold);
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.contact__text {
    color: var(--text-tertiary);
    margin-bottom: var(--spacing-md);
}

/* Form Styles */
.form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.form__group {
    position: relative;
}

.form__input {
    width: 100%;
    padding: var(--spacing-md);
    font-size: 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    transition: var(--transition-base);
}

.form__input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.1);
}

.form__input:not(:placeholder-shown) + .form__label,
.form__input:focus + .form__label {
    top: -8px;
    left: 12px;
    font-size: 0.75rem;
    color: var(--primary-color);
    background-color: var(--bg-primary);
    padding: 0 4px;
}

.form__label {
    position: absolute;
    top: 50%;
    left: var(--spacing-md);
    transform: translateY(-50%);
    font-size: 1rem;
    color: var(--text-tertiary);
    pointer-events: none;
    transition: var(--transition-base);
}

.form__checkbox {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.form__check {
    width: 18px;
    height: 18px;
    accent-color: var(--primary-color);
}

.form__check-label {
    font-size: 0.875rem;
    color: var(--text-tertiary);
    cursor: pointer;
}

/* Location Section */
.location__content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.location__info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.location__card {
    display: flex;
    gap: var(--spacing-lg);
    align-items: flex-start;
}

.location__icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: var(--white);
    flex-shrink: 0;
}

.location__title {
    font-size: 1.125rem;
    font-weight: var(--font-semibold);
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.location__text {
    color: var(--text-tertiary);
    line-height: 1.6;
}

.location__map {
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    height: 400px;
}

.location__map iframe {
    width: 100%;
    height: 100%;
    border: none;
}

/* Footer */
.footer {
    background-color: var(--gray-900);
    color: var(--gray-300);
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer__content {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer__brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.footer__logo {
    width: 40px;
    height: 40px;
}

.footer__title {
    font-family: var(--font-secondary);
    font-size: 1.5rem;
    font-weight: var(--font-bold);
    color: var(--white);
}

.footer__description {
    color: var(--gray-400);
    line-height: 1.6;
    margin-bottom: var(--spacing-lg);
}

.footer__social {
    display: flex;
    gap: var(--spacing-md);
}

.footer__social-link {
    width: 40px;
    height: 40px;
    background-color: var(--gray-800);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: var(--gray-400);
    transition: var(--transition-base);
}

.footer__social-link:hover {
    background-color: var(--primary-color);
    color: var(--white);
}

.footer__heading {
    color: var(--white);
    font-size: 1.125rem;
    font-weight: var(--font-semibold);
    margin-bottom: var(--spacing-lg);
}

.footer__list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer__link {
    color: var(--gray-400);
    transition: var(--transition-base);
}

.footer__link:hover {
    color: var(--white);
}

.footer__info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer__info p {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--gray-400);
    margin-bottom: 0;
}

.footer__info i {
    color: var(--primary-color);
    width: 16px;
}

.footer__bottom {
    border-top: 1px solid var(--gray-800);
    padding-top: var(--spacing-xl);
    text-align: center;
    color: var(--gray-500);
}

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

.footer__bottom a {
    color: var(--primary-light);
}

/* WhatsApp Float Button */
.whatsapp-float {
    position: fixed;
    bottom: var(--spacing-xl);
    right: var(--spacing-xl);
    z-index: var(--z-fixed);
}

.whatsapp-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    background-color: #25d366;
    color: var(--white);
    border-radius: var(--radius-full);
    font-size: 1.5rem;
    box-shadow: var(--shadow-lg);
    transition: var(--transition-base);
    animation: pulse 2s infinite;
}

.whatsapp-btn:hover {
    background-color: #128c7e;
    color: var(--white);
    transform: scale(1.1);
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.7);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(37, 211, 102, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(37, 211, 102, 0);
    }
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: var(--spacing-xl);
    left: var(--spacing-lg);
    width: 52px;
    height: 52px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--white);
    border: none;
    border-radius: var(--radius-full);
    font-size: 1.25rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: var(--z-fixed);
    box-shadow: 0 4px 15px rgba(var(--primary-rgb), 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
}

.back-to-top i {
    transform: translateY(-1px);
    transition: transform 0.2s ease;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: scale(1);
    animation: backToTopShow 0.3s ease-out;
}

@keyframes backToTopShow {
    0% {
        opacity: 0;
        transform: scale(0.3) translateY(20px);
    }
    50% {
        transform: scale(1.1);
    }
    100% {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.back-to-top:hover {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
    box-shadow: 0 6px 20px rgba(var(--primary-rgb), 0.4);
    transform: translateY(-2px);
}

.back-to-top:hover i {
    transform: translateY(-3px);
}

.back-to-top:active {
    transform: translateY(0) scale(0.95);
}

/* Modals */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-modal);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-base);
}

.modal.show {
    opacity: 1;
    visibility: visible;
}

.modal__content {
    background-color: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: 0 25px 50px -12px var(--shadow-color);
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    transform: scale(0.9);
    transition: var(--transition-base);
    border: 1px solid var(--border-color);
}

.modal.show .modal__content {
    transform: scale(1);
}

.modal__content--small {
    max-width: 400px;
}

.modal__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-xl);
    border-bottom: 1px solid var(--border-color);
}

.modal__title {
    font-size: 1.5rem;
    font-weight: var(--font-semibold);
    color: var(--text-primary);
    margin-bottom: 0;
}

.modal__close {
    width: 40px;
    height: 40px;
    background-color: transparent;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1.25rem;
    color: var(--text-tertiary);
    cursor: pointer;
    transition: var(--transition-base);
}

.modal__close:hover {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
}

.modal__body {
    padding: var(--spacing-xl);
}

/* Donate Modal */
.donate-modal__content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

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

.donate-modal__image {
    max-width: 200px;
    border-radius: var(--radius-lg);
}

.donate-modal__subtitle {
    font-size: 1.125rem;
    font-weight: var(--font-semibold);
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.donate-modal__text {
    color: var(--gray-600);
    margin-bottom: var(--spacing-lg);
}

.donate-modal__note {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-md);
    background-color: var(--gray-50);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--primary-color);
}

.donate-modal__note p {
    color: var(--gray-600);
    font-size: 0.875rem;
    margin-bottom: 0;
}

/* Help Modal */
.help-modal__content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-xl);
}

.help-modal__image {
    width: 100%;
    border-radius: var(--radius-lg);
}

.help-modal__name {
    font-size: 1.5rem;
    font-weight: var(--font-bold);
    color: var(--gray-900);
    margin-bottom: var(--spacing-lg);
}

.help-modal__condition h4,
.help-modal__action h4 {
    font-size: 1.125rem;
    font-weight: var(--font-semibold);
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.help-modal__condition {
    margin-bottom: var(--spacing-xl);
}

.help-modal__condition p,
.help-modal__action p {
    color: var(--gray-600);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}

/* Success Modal */
.success-modal__content {
    text-align: center;
}

.success-modal__icon {
    font-size: 4rem;
    color: var(--success);
    margin-bottom: var(--spacing-lg);
}

.success-modal__title {
    font-size: 1.5rem;
    font-weight: var(--font-bold);
    color: var(--gray-900);
    margin-bottom: var(--spacing-md);
}

.success-modal__message {
    color: var(--gray-600);
    margin-bottom: var(--spacing-xl);
}

/* Responsive Design */
@media (max-width: 1024px) {
    :root {
        --spacing-4xl: 4rem;
        --spacing-3xl: 3rem;
    }
    
    .hero__title {
        font-size: 3rem;
    }
    
    .hero__stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about__content,
    .donate__content,
    .contact__content,
    .location__content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .campaign__card--featured {
        grid-column: span 1;
        grid-template-columns: 1fr;
    }
    
    .footer__content {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .donate-modal__content,
    .help-modal__content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    :root {
        --spacing-4xl: 3rem;
        --spacing-3xl: 2rem;
    }
    
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .nav__menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        height: 100vh;
        background-color: var(--white);
        padding: var(--spacing-xl);
        transition: var(--transition-slow);
        z-index: var(--z-modal);
    }
    
    .nav__menu.show {
        right: 0;
    }
    
    .nav__list {
        flex-direction: column;
        gap: var(--spacing-lg);
        margin-top: var(--spacing-3xl);
    }
    
    .nav__toggle,
    .nav__close {
        display: block;
    }
    
    .nav__close {
        position: absolute;
        top: var(--spacing-lg);
        right: var(--spacing-lg);
    }
    
    .nav__actions {
        gap: var(--spacing-sm);
    }
    
    .theme-toggle {
        width: 44px;
        height: 24px;
    }
    
    .theme-toggle::before {
        width: 20px;
        height: 20px;
    }
    
    [data-theme="dark"] .theme-toggle::before {
        transform: translateX(20px);
    }
    
    .hero__title {
        font-size: 2.5rem;
    }
    
    .hero__buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .hero__stats {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-lg);
    }
    
    .section__title {
        font-size: 2rem;
    }
    
    .campaigns__grid,
    .partners__grid {
        grid-template-columns: 1fr;
    }
    
    .footer__content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .whatsapp-float {
        bottom: var(--spacing-lg);
        right: var(--spacing-lg);
    }
    
    .back-to-top {
        bottom: 90px; /* Acima do botão WhatsApp */
        left: var(--spacing-lg);
        width: 48px;
        height: 48px;
        font-size: 1.1rem;
    }
}

@media (max-width: 480px) {
    .hero__title {
        font-size: 2rem;
    }
    
    .hero__stats {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .stat__number {
        font-size: 2rem;
    }
    
    .partners__grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .partner__card {
        height: 100px;
        padding: var(--spacing-md);
    }
    
    .modal__content {
        width: 95%;
        margin: var(--spacing-md);
    }
}

/* Print Styles */
@media print {
    .header,
    .whatsapp-float,
    .back-to-top,
    .modal {
        display: none !important;
    }
    
    .hero {
        min-height: auto;
        padding: var(--spacing-xl) 0;
    }
    
    .section {
        padding: var(--spacing-lg) 0;
    }
    
    .hero__overlay {
        background: rgba(30, 64, 175, 0.3);
    }
    
    * {
        box-shadow: none !important;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .hero__scroll {
        animation: none;
    }
    
    .whatsapp-btn {
        animation: none;
    }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    :root {
        --primary-color: #000080;
        --primary-dark: #000066;
        --secondary-color: #ff6600;
        --gray-600: #333333;
        --gray-700: #222222;
        --gray-800: #111111;
        --gray-900: #000000;
    }
}

/* Dark Theme */
[data-theme="dark"] {
    --bg-primary: #111827;
    --bg-secondary: #1f2937;
    --bg-tertiary: #374151;
    --text-primary: #ffffff;        /* Pure white for main text */
    --text-secondary: #f3f4f6;      /* Light gray for secondary text */
    --text-tertiary: #d1d5db;       /* Medium light gray for tertiary text */
    --border-color: #374151;
    --shadow-color: rgba(0, 0, 0, 0.3);
    
    --white: #111827;
    --gray-50: #1f2937;
    --gray-100: #374151;
    --gray-200: #4b5563;
    --gray-300: #6b7280;
    --gray-400: #9ca3af;
    --gray-500: #d1d5db;
    --gray-600: #e5e7eb;
    --gray-700: #f3f4f6;
    --gray-800: #f9fafb;
    --gray-900: #ffffff;
}

/* Auto Dark Mode Support Disabled - Default to Light Mode */
/* Users must manually toggle to dark mode */