/* ============================================
   COCA-COLA - SITE VITRINE
   Design Premium, Responsivo e Acessível
   ============================================ */

/* ===== VARIÁVEIS CSS ===== */
:root {
    /* Paleta de Cores Coca-Cola */
    --coca-red: #E41A1C;
    --coca-red-dark: #C01719;
    --coca-red-light: #FF1F22;
    --white: #FFFFFF;
    --black: #000000;
    --gray-light: #F5F5F5;
    --gray-medium: #BFBFBF;
    --gray-dark: #666666;
    
    /* Tipografia */
    --font-primary: 'Poppins', 'Montserrat', sans-serif;
    --font-secondary: 'Montserrat', 'Poppins', sans-serif;
    
    /* Espaçamentos */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Transições */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Sombras */
    --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 25px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.2);
    
    /* Z-index */
    --z-header: 1000;
    --z-back-to-top: 999;
    --z-menu-overlay: 998;
    --z-particles: 1;
    
    /* Efeitos Premium */
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
    --glow-color: rgba(228, 26, 28, 0.5);
}

/* ===== RESET E BASE ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-primary);
    color: var(--black);
    background-color: var(--white);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Scrollbar personalizada */
body::-webkit-scrollbar {
    width: 10px;
}

body::-webkit-scrollbar-track {
    background: var(--gray-light);
}

body::-webkit-scrollbar-thumb {
    background: var(--coca-red);
    border-radius: 5px;
}

body::-webkit-scrollbar-thumb:hover {
    background: var(--coca-red-dark);
}

/* ===== ACESSIBILIDADE ===== */
:focus-visible {
    outline: 3px solid var(--coca-red);
    outline-offset: 2px;
}

.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--coca-red);
    color: var(--white);
    padding: 12px 20px;
    text-decoration: none;
    z-index: 10000;
    font-weight: 600;
    border-radius: 0 0 4px 0;
    transition: top var(--transition-fast);
}

.skip-link:focus {
    top: 0;
}

/* ===== PAGE LOADER ===== */
.page-loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--coca-red) 0%, var(--coca-red-dark) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    transition: opacity var(--transition-slow), visibility var(--transition-slow);
}

.page-loader.hidden {
    opacity: 0;
    visibility: hidden;
}

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

.loader-logo {
    margin-bottom: var(--spacing-md);
    animation: pulse 2s ease-in-out infinite;
}

.loader-img {
    width: 120px;
    height: auto;
    filter: drop-shadow(0 10px 30px rgba(0, 0, 0, 0.3));
}

.loader-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top-color: var(--white);
    border-radius: 50%;
    margin: 0 auto;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.1);
        opacity: 0.8;
    }
}

/* ===== REDUÇÃO DE MOVIMENTO ===== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    
    .hero-bottle,
    .historia-image {
        animation: none !important;
    }
}

/* ===== HEADER E NAVEGAÇÃO ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: var(--z-header);
    background: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-md);
    transition: background var(--transition-normal);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-sm) var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    transition: transform var(--transition-fast);
}

.logo:hover {
    transform: scale(1.05);
}

.logo-img {
    height: 50px;
    width: auto;
    object-fit: contain;
}

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

.nav-link {
    color: var(--white);
    text-decoration: none;
    font-weight: 500;
    font-size: 1rem;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 4px;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    display: inline-block;
}

.nav-link span {
    position: relative;
    z-index: 1;
    display: inline-block;
    transition: transform var(--transition-normal);
}

.nav-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--coca-red);
    transition: left var(--transition-normal);
    z-index: 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--white);
    transition: all var(--transition-normal);
    transform: translateX(-50%);
    z-index: 1;
}

.nav-link:hover,
.nav-link:focus {
    color: var(--white);
    outline: none;
}

.nav-link:hover::before,
.nav-link:focus::before {
    left: 0;
}

.nav-link:hover span,
.nav-link:focus span {
    transform: translateX(5px);
}

.nav-link:hover::after,
.nav-link:focus::after {
    width: 80%;
}

.nav-link.active {
    color: var(--white);
}

.nav-link.active::before {
    left: 0;
}

.nav-link.active::after {
    width: 80%;
}

/* Menu Hambúrguer */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
    z-index: var(--z-header);
}

.menu-icon {
    width: 25px;
    height: 3px;
    background: var(--white);
    border-radius: 3px;
    transition: all var(--transition-normal);
}

.menu-toggle[aria-expanded="true"] .menu-icon:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

.menu-toggle[aria-expanded="true"] .menu-icon:nth-child(2) {
    opacity: 0;
}

.menu-toggle[aria-expanded="true"] .menu-icon:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* ===== HERO SECTION ===== */
.hero {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100%;
    min-height: 100vh;
    background: linear-gradient(135deg, var(--coca-red) 0%, var(--coca-red-dark) 50%, var(--black) 100%);
    overflow: hidden;
    padding-top: 80px;
}

.hero-gradient-animated {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        45deg,
        var(--coca-red) 0%,
        var(--coca-red-dark) 25%,
        var(--coca-red) 50%,
        var(--coca-red-dark) 75%,
        var(--coca-red) 100%
    );
    background-size: 400% 400%;
    animation: gradientShift 15s ease infinite;
    opacity: 0.3;
    z-index: 1;
}

@keyframes gradientShift {
    0%, 100% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
}

.hero-title {
    font-size: clamp(4rem, 20vw, 15rem);
    font-weight: 700;
    color: var(--white);
    text-align: center;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.02em;
    z-index: 2;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.05em;
    flex-wrap: wrap;
}

.title-line {
    display: inline-block;
    position: relative;
    transform-style: preserve-3d;
    transition: transform 0.3s ease;
    line-height: 1;
}

.title-line:hover {
    transform: perspective(1000px) rotateX(5deg) translateZ(20px);
    text-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.hero-bottle-container {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    position: relative;
    margin: 0 0.1em;
    vertical-align: middle;
}

.hero-bottle {
    width: clamp(150px, 15vw, 350px);
    height: auto;
    max-height: 1.2em;
    object-fit: contain;
    filter: drop-shadow(0 10px 30px rgba(0, 0, 0, 0.3));
    animation: float 3s ease-in-out infinite;
    z-index: 3;
    position: relative;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-20px);
    }
}

.hero-content {
    text-align: center;
    z-index: 2;
    margin-top: var(--spacing-md);
}

.hero-subtitle {
    font-size: clamp(1.2rem, 3vw, 2rem);
    color: var(--white);
    margin-bottom: var(--spacing-md);
    font-weight: 300;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

/* ===== BOTÕES ===== */
.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: all var(--transition-normal);
    text-align: center;
    font-family: var(--font-primary);
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--white);
    color: var(--coca-red);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover,
.btn-primary:focus {
    background: var(--gray-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    outline: none;
}

.btn-secondary {
    background: var(--coca-red);
    color: var(--white);
    box-shadow: var(--shadow-sm);
}

.btn-secondary:hover,
.btn-secondary:focus {
    background: var(--coca-red-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    outline: none;
}

.btn-ripple {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.6);
    transform: scale(0);
    animation: ripple 0.6s ease-out;
    pointer-events: none;
    width: 100px;
    height: 100px;
    left: 50%;
    top: 50%;
    margin-left: -50px;
    margin-top: -50px;
}

@keyframes ripple {
    to {
        transform: scale(4);
        opacity: 0;
    }
}

.btn-loader {
    display: none;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: var(--coca-red);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-left: var(--spacing-xs);
}

.btn.loading .btn-text {
    opacity: 0.7;
}

.btn.loading .btn-loader {
    display: inline-block;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* ===== SEÇÕES ===== */
section {
    padding: var(--spacing-xl) var(--spacing-md);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.section-title {
    font-size: clamp(2rem, 5vw, 4rem);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-sm);
    color: var(--black);
}

.section-subtitle {
    font-size: clamp(1rem, 2vw, 1.5rem);
    text-align: center;
    color: var(--gray-dark);
    margin-bottom: var(--spacing-lg);
    font-weight: 300;
}

/* ===== HISTÓRIA SECTION ===== */
.historia-section {
    background: linear-gradient(180deg, var(--white) 0%, var(--gray-light) 100%);
}

.historia-container {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.historia-visual {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
    min-height: 400px;
}

.historia-image-wrapper {
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
}

.historia-image {
    width: 60%;
    max-width: 350px;
    height: auto;
    object-fit: contain;
    filter: drop-shadow(0 15px 35px rgba(0, 0, 0, 0.2));
    transition: transform var(--transition-slow);
    animation: float 4s ease-in-out infinite;
}

.historia-image:hover {
    transform: scale(1.05) translateY(-10px);
}

.historia-visual svg,
.historia-svg {
    position: absolute;
    width: 100%;
    max-width: 500px;
    height: auto;
    filter: drop-shadow(var(--shadow-lg));
    opacity: 0.3;
    z-index: 1;
    transform: rotate(-15deg);
    transition: transform var(--transition-slow);
}

.historia-visual:hover .historia-svg {
    transform: rotate(-10deg) scale(1.05);
}

.historia-content {
    padding: var(--spacing-md);
    opacity: 1 !important;
    transform: none !important;
}

.historia-text {
    font-size: clamp(1rem, 1.5vw, 1.2rem);
    line-height: 1.8;
    color: var(--gray-dark);
    margin-bottom: var(--spacing-md);
    text-align: justify;
    opacity: 1 !important;
    transform: none !important;
}

/* ===== PRODUTOS SECTION ===== */
.produtos-section {
    background: linear-gradient(180deg, var(--gray-light) 0%, var(--white) 100%);
}

.produtos-title {
    color: var(--coca-red);
}

/* Carrossel */
.carousel-container {
    position: relative;
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-md);
    overflow: hidden;
}

.carousel-track {
    display: flex;
    gap: var(--spacing-md);
    transition: transform var(--transition-slow);
    will-change: transform;
}

.card {
    min-width: 100%;
    background: var(--white);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
    display: flex;
    flex-direction: column;
    position: relative;
    transform-style: preserve-3d;
}

.card-glow {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, var(--glow-color) 0%, transparent 70%);
    opacity: 0;
    transition: opacity var(--transition-slow);
    pointer-events: none;
    z-index: 0;
}

.card:hover {
    transform: translateY(-10px) perspective(1000px) rotateX(2deg);
    box-shadow: var(--shadow-xl);
}

.card:hover .card-glow {
    opacity: 0.6;
    animation: glowPulse 2s ease-in-out infinite;
}

@keyframes glowPulse {
    0%, 100% {
        transform: scale(1);
        opacity: 0.6;
    }
    50% {
        transform: scale(1.1);
        opacity: 0.8;
    }
}

.card-image {
    position: relative;
    width: 100%;
    height: 300px;
    background: linear-gradient(135deg, var(--gray-light) 0%, var(--white) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
    overflow: hidden;
}

.card-image-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--coca-red) 0%, var(--coca-red-dark) 100%);
    opacity: 0;
    transition: opacity var(--transition-slow);
}

.card:hover .card-image-bg {
    opacity: 0.1;
}

.product-image {
    width: 60%;
    height: auto;
    max-height: 250px;
    object-fit: contain;
    filter: drop-shadow(var(--shadow-md));
    transition: transform var(--transition-normal);
    position: relative;
    z-index: 1;
}

.card:hover .product-image {
    transform: scale(1.1);
}

.card-content {
    padding: var(--spacing-md);
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    position: relative;
    z-index: 1;
}

.card-title {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    color: var(--black);
    margin-bottom: var(--spacing-xs);
}

.card-description {
    font-size: clamp(0.9rem, 1.5vw, 1.1rem);
    color: var(--gray-dark);
    line-height: 1.6;
    flex: 1;
    margin-bottom: var(--spacing-sm);
}

/* Botões do Carrossel */
.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    background: var(--coca-red);
    color: var(--white);
    border: none;
    border-radius: 50%;
    font-size: 2rem;
    cursor: pointer;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-md);
}

.carousel-btn:hover,
.carousel-btn:focus {
    background: var(--coca-red-dark);
    transform: translateY(-50%) scale(1.1);
    outline: none;
}

.carousel-btn-prev {
    left: var(--spacing-sm);
}

.carousel-btn-next {
    right: var(--spacing-sm);
}

/* Indicadores do Carrossel */
.carousel-indicators {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-md);
}

.indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: 2px solid var(--coca-red);
    background: transparent;
    cursor: pointer;
    transition: all var(--transition-normal);
}

.indicator:hover,
.indicator:focus {
    transform: scale(1.2);
    outline: none;
}

.indicator.active {
    background: var(--coca-red);
}

/* ===== CONTATO SECTION ===== */
.contato-section {
    background: linear-gradient(135deg, var(--coca-red) 0%, var(--coca-red-dark) 100%);
    color: var(--white);
}

.contato-section .section-title,
.contato-section .section-subtitle {
    color: var(--white);
}

.contato-container {
    max-width: 1200px;
    margin: 0 auto;
}

.contato-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.contato-info h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    margin-bottom: var(--spacing-md);
}

.contato-info p {
    font-size: clamp(1rem, 1.5vw, 1.2rem);
    line-height: 1.8;
    margin-bottom: var(--spacing-sm);
}

.contato-details {
    margin-top: var(--spacing-md);
}

.contato-details p {
    margin-bottom: var(--spacing-xs);
}

/* Formulário */
.contato-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.form-group label {
    font-weight: 600;
    font-size: 1rem;
}

.form-group input,
.form-group textarea {
    padding: var(--spacing-sm);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: all var(--transition-normal);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: rgba(255, 255, 255, 0.6);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--white);
    background: rgba(255, 255, 255, 0.2);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.form-group label .required {
    color: var(--coca-red);
    margin-left: 4px;
}

.form-group input:invalid:not(:focus):not(:placeholder-shown),
.form-group textarea:invalid:not(:focus):not(:placeholder-shown) {
    border-color: rgba(255, 0, 0, 0.5);
}

.form-group input:valid:not(:focus):not(:placeholder-shown),
.form-group textarea:valid:not(:focus):not(:placeholder-shown) {
    border-color: rgba(0, 255, 0, 0.5);
}

.error-message {
    display: block;
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.875rem;
    margin-top: var(--spacing-xs);
    min-height: 20px;
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.error-message.show {
    opacity: 1;
}

.form-feedback {
    padding: var(--spacing-sm);
    border-radius: 8px;
    margin-bottom: var(--spacing-md);
    font-weight: 500;
    text-align: center;
    opacity: 0;
    transform: translateY(-10px);
    transition: all var(--transition-normal);
    min-height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.form-feedback.show {
    opacity: 1;
    transform: translateY(0);
}

.form-feedback.success {
    background: rgba(0, 255, 0, 0.2);
    border: 2px solid rgba(0, 255, 0, 0.5);
    color: var(--white);
}

.form-feedback.error {
    background: rgba(255, 0, 0, 0.2);
    border: 2px solid rgba(255, 0, 0, 0.5);
    color: var(--white);
}

/* ===== FOOTER ===== */
.footer {
    background: var(--black);
    color: var(--white);
    padding: var(--spacing-lg) var(--spacing-md);
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-title {
    font-size: clamp(1.5rem, 3vw, 2rem);
    color: var(--coca-red);
    margin-bottom: var(--spacing-sm);
}

.footer-subtitle {
    font-size: clamp(1.1rem, 2vw, 1.3rem);
    margin-bottom: var(--spacing-sm);
    color: var(--white);
}

.footer-text {
    font-size: 1rem;
    line-height: 1.6;
    color: var(--gray-medium);
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.footer-link {
    color: var(--gray-medium);
    text-decoration: none;
    transition: color var(--transition-fast);
    font-size: 1rem;
}

.footer-link:hover,
.footer-link:focus {
    color: var(--coca-red);
    outline: none;
}

.social-links {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 45px;
    height: 45px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: var(--white);
    text-decoration: none;
    transition: all var(--transition-normal);
}

.social-link:hover,
.social-link:focus {
    background: var(--coca-red);
    transform: translateY(-3px);
    outline: none;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-md);
    text-align: center;
}

.footer-copyright,
.footer-credits {
    font-size: 0.9rem;
    color: var(--gray-medium);
    margin-bottom: var(--spacing-xs);
}

/* ===== SCROLL PROGRESS INDICATOR ===== */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: rgba(0, 0, 0, 0.1);
    z-index: var(--z-header);
    pointer-events: none;
}

.scroll-progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--coca-red) 0%, var(--coca-red-light) 100%);
    width: 0%;
    transition: width 0.1s ease-out;
    box-shadow: 0 0 10px var(--glow-color);
}

/* ===== PARTÍCULAS ANIMADAS ===== */
.particles-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: var(--z-particles);
    opacity: 0.3;
    display: none;
}

@media (min-width: 769px) {
    .particles-canvas {
        display: block;
    }
}

/* ===== BOTÃO VOLTAR AO TOPO ===== */
.back-to-top {
    position: fixed;
    bottom: var(--spacing-md);
    right: var(--spacing-md);
    width: 50px;
    height: 50px;
    background: var(--coca-red);
    color: var(--white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    z-index: var(--z-back-to-top);
    box-shadow: var(--shadow-lg);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover,
.back-to-top:focus {
    background: var(--coca-red-dark);
    transform: translateY(-5px) scale(1.1);
    outline: none;
    box-shadow: 0 0 20px var(--glow-color);
}

/* ===== ANIMAÇÕES DE ENTRADA (SCROLL REVEAL) ===== */
.fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===== RESPONSIVIDADE ===== */

/* Tablet */
@media (max-width: 1024px) {
    :root {
        --spacing-lg: 3rem;
        --spacing-xl: 4rem;
    }
    
    .historia-container,
    .contato-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .hero-bottle {
        width: clamp(120px, 12vw, 280px);
    }
    
    .historia-image {
        width: 70%;
        max-width: 300px;
    }
    
    .historia-visual {
        min-height: 350px;
    }
}

/* Mobile */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background: rgba(0, 0, 0, 0.98);
        flex-direction: column;
        align-items: flex-start;
        padding: var(--spacing-xl) var(--spacing-md);
        gap: var(--spacing-md);
        transition: right var(--transition-normal);
        z-index: var(--z-menu-overlay);
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .nav-link {
        font-size: 1.2rem;
        width: 100%;
        padding: var(--spacing-sm);
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .hero-title {
        font-size: clamp(3rem, 15vw, 8rem);
    }
    
    .hero-bottle {
        width: clamp(100px, 10vw, 200px);
    }
    
    .historia-image {
        width: 80%;
        max-width: 250px;
    }
    
    .historia-visual {
        min-height: 300px;
    }
    
    .historia-svg {
        opacity: 0.2;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .carousel-btn {
        width: 40px;
        height: 40px;
        font-size: 1.5rem;
    }
    
    .carousel-btn-prev {
        left: 5px;
    }
    
    .carousel-btn-next {
        right: 5px;
    }
}

/* Mobile Pequeno */
@media (max-width: 480px) {
    :root {
        --spacing-md: 1rem;
        --spacing-lg: 2rem;
        --spacing-xl: 3rem;
    }
    
    .hero-title {
        font-size: clamp(2.5rem, 12vw, 6rem);
    }
    
    .hero-bottle {
        width: clamp(80px, 8vw, 150px);
    }
    
    .historia-image {
        width: 90%;
        max-width: 200px;
    }
    
    .historia-visual {
        min-height: 250px;
    }
    
    .section-title {
        font-size: clamp(1.5rem, 6vw, 2.5rem);
    }
    
    .card-image {
        height: 200px;
    }
    
    .back-to-top {
        width: 45px;
        height: 45px;
        bottom: var(--spacing-sm);
        right: var(--spacing-sm);
    }
}

/* Telas muito pequenas */
@media (max-width: 320px) {
    .nav-container {
        padding: var(--spacing-xs) var(--spacing-sm);
    }
    
    .logo-img {
        height: 40px;
    }
    
    .hero {
        padding-top: 60px;
    }
}

/* ===== IMPRESSÃO ===== */
@media print {
    .header,
    .back-to-top,
    .carousel-btn,
    .carousel-indicators,
    .page-loader,
    .particles-canvas,
    .scroll-progress {
        display: none;
    }
    
    body {
        background: var(--white);
        color: var(--black);
    }
    
    section {
        page-break-inside: avoid;
    }
}