/* ===============================================
   Reset e Variáveis
   =============================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Cores Principais */
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --success-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --warning-gradient: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
    
    /* Cores Sólidas */
    --primary-color: #667eea;
    --secondary-color: #f5576c;
    --accent-color: #00f2fe;
    --dark-bg: #0f0f23;
    --dark-card: #1a1a2e;
    --dark-card-hover: #242438;
    --text-primary: #ffffff;
    --text-secondary: #b4b4c8;
    --text-muted: #6b6b7f;
    
    /* Sombras */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 12px 60px rgba(0, 0, 0, 0.3);
    --glow: 0 0 20px rgba(102, 126, 234, 0.5);
    
    /* Espaçamentos */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 30px;
    
    /* Transições */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', sans-serif;
    background: var(--dark-bg);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ===============================================
   Header e Navegação
   =============================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(15, 15, 35, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition-normal);
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    cursor: pointer;
}

.logo i {
    font-size: 1.8rem;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
}

.nav-menu a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition-fast);
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-gradient);
    transition: var(--transition-fast);
}

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

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

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
}

/* ===============================================
   Hero Section
   =============================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: calc(80px + var(--spacing-xl)) 0 var(--spacing-2xl);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 50%, rgba(102, 126, 234, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 80% 80%, rgba(245, 87, 108, 0.1) 0%, transparent 50%);
    animation: pulse 8s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

.hero-content {
    position: relative;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    animation: fadeInUp 0.8s ease;
}

.gradient-text {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-2xl);
    animation: fadeInUp 0.8s ease 0.4s both;
}

.hero-stats {
    display: flex;
    gap: var(--spacing-xl);
    animation: fadeInUp 0.8s ease 0.6s both;
}

.stat {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Phone Mockup */
.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    animation: fadeInRight 1s ease;
}

.phone-mockup {
    position: relative;
    z-index: 2;
}

.phone-frame {
    width: 280px;
    height: 560px;
    background: linear-gradient(135deg, #1a1a2e 0%, #0f0f23 100%);
    border-radius: 40px;
    padding: 12px;
    box-shadow: var(--shadow-xl);
    position: relative;
}

.phone-notch {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 25px;
    background: var(--dark-bg);
    border-radius: 0 0 20px 20px;
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: var(--primary-gradient);
    border-radius: 32px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.video-preview {
    font-size: 4rem;
    color: white;
    opacity: 0.8;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

/* Floating Elements */
.floating-elements {
    position: absolute;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.floating-icon {
    position: absolute;
    font-size: 2rem;
    opacity: 0;
    animation: floatIcon 3s ease-in-out infinite;
    animation-delay: var(--delay);
}

.floating-icon:nth-child(1) {
    top: 10%;
    right: 10%;
    color: #ff6b6b;
}

.floating-icon:nth-child(2) {
    top: 30%;
    left: 5%;
    color: #4ecdc4;
}

.floating-icon:nth-child(3) {
    bottom: 20%;
    right: 15%;
    color: #ffe66d;
}

.floating-icon:nth-child(4) {
    bottom: 10%;
    left: 10%;
    color: #a8e6cf;
}

@keyframes floatIcon {
    0%, 100% { 
        opacity: 0; 
        transform: translateY(0) scale(0.5);
    }
    50% { 
        opacity: 0.8; 
        transform: translateY(-30px) scale(1);
    }
}

/* ===============================================
   Botões
   =============================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

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

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

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    border: 2px solid rgba(255, 255, 255, 0.2);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.3);
}

.btn-generate {
    width: 100%;
    background: var(--secondary-gradient);
    color: white;
    font-size: 1.125rem;
    padding: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.btn-generate:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
}

.btn-download {
    background: var(--success-gradient);
    color: white;
}

.btn-share {
    background: var(--warning-gradient);
    color: white;
}

/* ===============================================
   Sections
   =============================================== */
.section {
    padding: var(--spacing-2xl) 0;
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: var(--spacing-sm);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
}

/* ===============================================
   Como Funciona
   =============================================== */
.steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.step {
    text-align: center;
    padding: var(--spacing-xl);
    background: var(--dark-card);
    border-radius: var(--radius-lg);
    transition: var(--transition-normal);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.step:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
    background: var(--dark-card-hover);
}

.step-icon {
    position: relative;
    width: 100px;
    height: 100px;
    margin: 0 auto var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    background: var(--primary-gradient);
    border-radius: 50%;
    color: white;
}

.step-number {
    position: absolute;
    top: -10px;
    right: -10px;
    width: 35px;
    height: 35px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--secondary-gradient);
    border-radius: 50%;
    font-size: 1rem;
    font-weight: 700;
}

.step-title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
}

.step-description {
    color: var(--text-secondary);
}

/* ===============================================
   Generator Section
   =============================================== */
.generator {
    background: linear-gradient(180deg, transparent 0%, rgba(102, 126, 234, 0.05) 100%);
}

.generator-container {
    max-width: 800px;
    margin: 0 auto;
}

.video-form {
    background: var(--dark-card);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

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

.form-group label {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.form-group label i {
    color: var(--primary-color);
}

.form-group input[type="text"],
.form-group select {
    width: 100%;
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 1rem;
    font-family: inherit;
    transition: var(--transition-fast);
}

.form-group input[type="text"]:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    background: rgba(255, 255, 255, 0.08);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

/* Style Options */
.style-options {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-sm);
}

.style-card {
    cursor: pointer;
}

.style-card input {
    display: none;
}

.style-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
}

.style-content i {
    font-size: 1.5rem;
}

.style-card:hover .style-content {
    background: rgba(255, 255, 255, 0.08);
}

.style-card input:checked + .style-content {
    background: var(--primary-gradient);
    border-color: transparent;
    color: white;
}

/* Music Options */
.music-options {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-sm);
}

.music-card {
    cursor: pointer;
}

.music-card input {
    display: none;
}

.music-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
    font-size: 0.875rem;
}

.music-content i {
    font-size: 1.25rem;
}

.music-card:hover .music-content {
    background: rgba(255, 255, 255, 0.08);
}

.music-card input:checked + .music-content {
    background: var(--secondary-gradient);
    border-color: transparent;
    color: white;
}

/* Preview Area */
.preview-area {
    background: var(--dark-card);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    margin-top: var(--spacing-xl);
    animation: fadeIn 0.5s ease;
}

.preview-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.preview-header h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    overflow: hidden;
    margin-bottom: var(--spacing-sm);
}

.progress-fill {
    height: 100%;
    background: var(--primary-gradient);
    border-radius: 10px;
    width: 0%;
    transition: width 0.3s ease;
}

.progress-text {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.preview-steps {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.preview-step {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    transition: var(--transition-fast);
}

.preview-step.active {
    background: rgba(102, 126, 234, 0.1);
    color: var(--text-primary);
}

.preview-step.completed {
    color: var(--accent-color);
}

.preview-step i.fa-check-circle {
    color: var(--accent-color);
}

/* Result Area */
.result-area {
    background: var(--dark-card);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    margin-top: var(--spacing-xl);
    text-align: center;
    animation: fadeIn 0.5s ease;
}

.result-success {
    margin-bottom: var(--spacing-xl);
}

.result-success i {
    font-size: 4rem;
    color: var(--accent-color);
    margin-bottom: var(--spacing-md);
    animation: scaleIn 0.5s ease;
}

.result-success h3 {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-sm);
}

.result-video {
    margin-bottom: var(--spacing-xl);
}

.video-mockup {
    width: 200px;
    height: 350px;
    margin: 0 auto;
    background: var(--primary-gradient);
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    box-shadow: var(--shadow-xl);
    animation: scaleIn 0.5s ease 0.2s both;
}

.video-mockup i {
    font-size: 3rem;
    color: white;
    opacity: 0.9;
}

.video-info {
    color: white;
    font-size: 0.875rem;
}

.result-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* ===============================================
   Gallery Section
   =============================================== */
.gallery-filters {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.filter-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    color: var(--text-secondary);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-fast);
}

.filter-btn:hover {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-primary);
}

.filter-btn.active {
    background: var(--primary-gradient);
    border-color: transparent;
    color: white;
}

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

.gallery-item {
    background: var(--dark-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition-normal);
    cursor: pointer;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

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

.gallery-thumbnail {
    position: relative;
    aspect-ratio: 9/16;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.gallery-thumbnail i {
    font-size: 3rem;
    color: white;
    opacity: 0.7;
    transition: var(--transition-normal);
}

.gallery-item:hover .gallery-thumbnail i {
    transform: scale(1.2);
    opacity: 1;
}

.gallery-overlay {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
}

.gallery-views {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: rgba(0, 0, 0, 0.7);
    border-radius: var(--radius-md);
    color: white;
    font-size: 0.875rem;
}

.gallery-info {
    padding: var(--spacing-md);
}

.gallery-info h4 {
    font-size: 1rem;
    margin-bottom: var(--spacing-xs);
}

.gallery-info p {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.gallery-info p i {
    color: var(--primary-color);
}

/* ===============================================
   Footer
   =============================================== */
.footer {
    background: var(--dark-card);
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-xl);
}

.footer-brand p {
    color: var(--text-secondary);
    margin: var(--spacing-md) 0;
}

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

.social-links a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 50%;
    color: var(--text-primary);
    transition: var(--transition-fast);
}

.social-links a:hover {
    background: var(--primary-gradient);
    transform: translateY(-3px);
}

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

.footer-column h4 {
    margin-bottom: var(--spacing-md);
    font-size: 1.125rem;
}

.footer-column ul {
    list-style: none;
}

.footer-column li {
    margin-bottom: var(--spacing-sm);
}

.footer-column a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition-fast);
}

.footer-column a:hover {
    color: var(--primary-color);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    color: var(--text-secondary);
}

/* ===============================================
   Animações
   =============================================== */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* ===============================================
   Responsividade
   =============================================== */
@media (max-width: 768px) {
    /* Typography */
    .hero-title {
        font-size: 2.5rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    /* Header */
    .nav-menu {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    /* Hero */
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .hero-visual {
        order: -1;
    }
    
    .phone-frame {
        width: 220px;
        height: 440px;
    }
    
    /* Steps */
    .steps {
        grid-template-columns: 1fr;
    }
    
    /* Form */
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .style-options {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .music-options {
        grid-template-columns: repeat(2, 1fr);
    }
    
    /* Gallery */
    .gallery-grid {
        grid-template-columns: 1fr;
    }
    
    /* Footer */
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .stat-number {
        font-size: 1.5rem;
    }
    
    .phone-frame {
        width: 180px;
        height: 360px;
    }
    
    .style-options {
        grid-template-columns: 1fr;
    }
    
    .result-actions {
        flex-direction: column;
    }
    
    .result-actions .btn {
        width: 100%;
    }
}