/**
 * Nexium Contabilidade - Estilos Principais
 * Design Moderno e Profissional
 */

/* ============================================
   CSS Variables (Variáveis de Tema)
   ============================================ */
:root {
    /* Cores Principais */
    --primary: #00C853;
    --primary-dark: #00A843;
    --primary-light: #69F0AE;
    --secondary: #1E3A5F;
    --secondary-dark: #152A45;
    --secondary-light: #2E5A8F;
    
    /* Cores de Apoio */
    --accent: #00BCD4;
    --accent-dark: #0097A7;
    --warning: #FFC107;
    --danger: #F44336;
    --success: #4CAF50;
    --info: #2196F3;
    
    /* Neutros */
    --white: #FFFFFF;
    --gray-50: #FAFAFA;
    --gray-100: #F5F5F5;
    --gray-200: #EEEEEE;
    --gray-300: #E0E0E0;
    --gray-400: #BDBDBD;
    --gray-500: #9E9E9E;
    --gray-600: #757575;
    --gray-700: #616161;
    --gray-800: #424242;
    --gray-900: #212121;
    --black: #000000;
    
    /* Gradientes */
    --gradient-primary: linear-gradient(135deg, #00C853 0%, #00BCD4 100%);
    --gradient-secondary: linear-gradient(135deg, #1E3A5F 0%, #2E5A8F 100%);
    --gradient-dark: linear-gradient(135deg, #1E3A5F 0%, #0D1B2A 100%);
    --gradient-hero: linear-gradient(135deg, #0D1B2A 0%, #1E3A5F 50%, #2E5A8F 100%);
    
    /* Tipografia */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-heading: 'Plus Jakarta Sans', var(--font-primary);
    
    /* Tamanhos de Fonte */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
    --text-6xl: 3.75rem;
    
    /* Espaçamentos */
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-10: 2.5rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;
    --spacing-20: 5rem;
    --spacing-24: 6rem;
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-2xl: 2rem;
    --radius-full: 9999px;
    
    /* Sombras */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --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);
    --shadow-glow: 0 0 40px rgba(0, 200, 83, 0.3);
    
    /* Transições */
    --transition-fast: 150ms ease;
    --transition: 300ms ease;
    --transition-slow: 500ms 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 & Base
   ============================================ */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-primary);
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--gray-800);
    background-color: var(--white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* ============================================
   Tipografia
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--secondary);
    margin-bottom: var(--spacing-4);
}

h1 { font-size: var(--text-5xl); }
h2 { font-size: var(--text-4xl); }
h3 { font-size: var(--text-3xl); }
h4 { font-size: var(--text-2xl); }
h5 { font-size: var(--text-xl); }
h6 { font-size: var(--text-lg); }

p {
    margin-bottom: var(--spacing-4);
    color: var(--gray-600);
}

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

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

strong, b {
    font-weight: 600;
}

/* ============================================
   Container & Layout
   ============================================ */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-6);
}

.container-sm {
    max-width: 960px;
}

.container-lg {
    max-width: 1440px;
}

.section {
    padding: var(--spacing-20) 0;
}

.section-sm {
    padding: var(--spacing-12) 0;
}

.section-lg {
    padding: var(--spacing-24) 0;
}

/* ============================================
   Header / Navbar
   ============================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-fixed);
    background: transparent;
    transition: all var(--transition);
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow-md);
}

.header.scrolled .nav-link {
    color: var(--secondary);
}

.header.scrolled .logo-light {
    display: none;
}

.header.scrolled .logo-dark {
    display: block;
}

.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-4) 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    font-family: var(--font-heading);
    font-size: var(--text-2xl);
    font-weight: 800;
    color: var(--white);
    text-decoration: none;
}

.logo-dark {
    display: none;
    color: var(--secondary);
}

.logo img {
    height: 40px;
    width: auto;
}

.logo-icon {
    width: 45px;
    height: 45px;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-xl);
    color: var(--white);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-8);
    list-style: none;
}

.nav-link {
    font-size: var(--text-sm);
    font-weight: 500;
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    padding: var(--spacing-2) 0;
    position: relative;
    transition: color var(--transition-fast);
}

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

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

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-2);
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--white);
    transition: all var(--transition);
}

.header.scrolled .nav-toggle span {
    background: var(--secondary);
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-6);
    font-family: var(--font-primary);
    font-size: var(--text-sm);
    font-weight: 600;
    line-height: 1.5;
    text-decoration: none;
    border-radius: var(--radius-lg);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition);
    white-space: nowrap;
}

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

.btn-primary {
    background: var(--gradient-primary);
    color: var(--white);
    border-color: transparent;
    box-shadow: 0 4px 15px rgba(0, 200, 83, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 200, 83, 0.4);
    color: var(--white);
}

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

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

.btn-outline {
    background: transparent;
    color: var(--white);
    border-color: rgba(255, 255, 255, 0.3);
}

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

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

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

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

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

.btn-lg {
    padding: var(--spacing-4) var(--spacing-8);
    font-size: var(--text-base);
    border-radius: var(--radius-xl);
}

.btn-sm {
    padding: var(--spacing-2) var(--spacing-4);
    font-size: var(--text-xs);
}

.btn-block {
    display: flex;
    width: 100%;
}

.btn-icon {
    padding: var(--spacing-3);
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: var(--gradient-hero);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.5;
}

.hero-shapes {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
    pointer-events: none;
}

.hero-shape {
    position: absolute;
    border-radius: 50%;
    background: var(--gradient-primary);
    opacity: 0.1;
    animation: float 20s infinite ease-in-out;
}

.hero-shape-1 {
    width: 600px;
    height: 600px;
    top: -200px;
    right: -100px;
    animation-delay: 0s;
}

.hero-shape-2 {
    width: 400px;
    height: 400px;
    bottom: -100px;
    left: -100px;
    animation-delay: -5s;
}

.hero-shape-3 {
    width: 200px;
    height: 200px;
    top: 50%;
    right: 20%;
    animation-delay: -10s;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0) rotate(0deg);
    }
    25% {
        transform: translate(30px, -30px) rotate(5deg);
    }
    50% {
        transform: translate(0, -50px) rotate(0deg);
    }
    75% {
        transform: translate(-30px, -30px) rotate(-5deg);
    }
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 700px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-4);
    background: rgba(0, 200, 83, 0.15);
    border: 1px solid rgba(0, 200, 83, 0.3);
    border-radius: var(--radius-full);
    color: var(--primary-light);
    font-size: var(--text-sm);
    font-weight: 500;
    margin-bottom: var(--spacing-6);
}

.hero-badge i {
    font-size: var(--text-lg);
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    color: var(--white);
    line-height: 1.1;
    margin-bottom: var(--spacing-6);
}

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

.hero-description {
    font-size: var(--text-xl);
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--spacing-8);
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-10);
}

.hero-stats {
    display: flex;
    gap: var(--spacing-10);
    padding-top: var(--spacing-8);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.hero-stat {
    text-align: left;
}

.hero-stat-value {
    font-size: var(--text-3xl);
    font-weight: 800;
    color: var(--white);
    line-height: 1;
    margin-bottom: var(--spacing-1);
}

.hero-stat-value span {
    color: var(--primary);
}

.hero-stat-label {
    font-size: var(--text-sm);
    color: rgba(255, 255, 255, 0.6);
}

.hero-image {
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 50%;
    max-width: 700px;
    z-index: 1;
}

.hero-image img {
    width: 100%;
    height: auto;
    filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.3));
}

/* ============================================
   Features Section
   ============================================ */
.features {
    background: var(--gray-50);
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--spacing-16);
}

.section-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-4);
    background: rgba(0, 200, 83, 0.1);
    border-radius: var(--radius-full);
    color: var(--primary);
    font-size: var(--text-sm);
    font-weight: 600;
    margin-bottom: var(--spacing-4);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.section-title {
    font-size: var(--text-4xl);
    margin-bottom: var(--spacing-4);
}

.section-description {
    font-size: var(--text-lg);
    color: var(--gray-600);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-8);
}

.feature-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: var(--spacing-8);
    transition: all var(--transition);
    border: 1px solid var(--gray-200);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
    border-color: transparent;
}

.feature-icon {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-lg);
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-6);
    font-size: var(--text-2xl);
    color: var(--white);
}

.feature-card:nth-child(2) .feature-icon {
    background: var(--gradient-secondary);
}

.feature-card:nth-child(3) .feature-icon {
    background: linear-gradient(135deg, #00BCD4 0%, #0097A7 100%);
}

.feature-card:nth-child(4) .feature-icon {
    background: linear-gradient(135deg, #FF6B6B 0%, #F44336 100%);
}

.feature-card:nth-child(5) .feature-icon {
    background: linear-gradient(135deg, #A855F7 0%, #7C3AED 100%);
}

.feature-card:nth-child(6) .feature-icon {
    background: linear-gradient(135deg, #F59E0B 0%, #D97706 100%);
}

.feature-title {
    font-size: var(--text-xl);
    margin-bottom: var(--spacing-3);
}

.feature-description {
    color: var(--gray-600);
    font-size: var(--text-sm);
    line-height: 1.7;
    margin-bottom: 0;
}

/* ============================================
   Pricing Section
   ============================================ */
.pricing {
    background: var(--white);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-6);
    align-items: start;
}

.pricing-card {
    background: var(--white);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-8);
    border: 2px solid var(--gray-200);
    transition: all var(--transition);
    position: relative;
}

.pricing-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-xl);
}

.pricing-card.featured {
    background: var(--gradient-dark);
    border-color: transparent;
    transform: scale(1.05);
    z-index: 1;
}

.pricing-card.featured:hover {
    transform: scale(1.07);
}

.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    padding: var(--spacing-1) var(--spacing-4);
    background: var(--gradient-primary);
    color: var(--white);
    font-size: var(--text-xs);
    font-weight: 700;
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.pricing-header {
    text-align: center;
    padding-bottom: var(--spacing-6);
    margin-bottom: var(--spacing-6);
    border-bottom: 1px solid var(--gray-200);
}

.pricing-card.featured .pricing-header {
    border-bottom-color: rgba(255, 255, 255, 0.1);
}

.pricing-name {
    font-size: var(--text-lg);
    font-weight: 700;
    margin-bottom: var(--spacing-2);
}

.pricing-card.featured .pricing-name {
    color: var(--white);
}

.pricing-description {
    font-size: var(--text-sm);
    color: var(--gray-500);
    margin-bottom: var(--spacing-4);
}

.pricing-card.featured .pricing-description {
    color: rgba(255, 255, 255, 0.6);
}

.pricing-price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: var(--spacing-1);
}

.pricing-currency {
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--gray-600);
}

.pricing-card.featured .pricing-currency {
    color: rgba(255, 255, 255, 0.8);
}

.pricing-value {
    font-size: var(--text-5xl);
    font-weight: 800;
    color: var(--secondary);
    line-height: 1;
}

.pricing-card.featured .pricing-value {
    color: var(--white);
}

.pricing-period {
    font-size: var(--text-sm);
    color: var(--gray-500);
}

.pricing-card.featured .pricing-period {
    color: rgba(255, 255, 255, 0.6);
}

.pricing-features {
    list-style: none;
    margin-bottom: var(--spacing-8);
}

.pricing-features li {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-3);
    padding: var(--spacing-3) 0;
    font-size: var(--text-sm);
    color: var(--gray-700);
}

.pricing-card.featured .pricing-features li {
    color: rgba(255, 255, 255, 0.9);
}

.pricing-features li i {
    color: var(--primary);
    font-size: var(--text-lg);
    flex-shrink: 0;
    margin-top: 2px;
}

.pricing-cta {
    width: 100%;
}

/* ============================================
   Testimonials Section
   ============================================ */
.testimonials {
    background: var(--gradient-dark);
    position: relative;
    overflow: hidden;
}

.testimonials::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.02'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.testimonials .section-header {
    position: relative;
    z-index: 1;
}

.testimonials .section-badge {
    background: rgba(0, 200, 83, 0.2);
    color: var(--primary-light);
}

.testimonials .section-title {
    color: var(--white);
}

.testimonials .section-description {
    color: rgba(255, 255, 255, 0.7);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-8);
    position: relative;
    z-index: 1;
}

.testimonial-card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-xl);
    padding: var(--spacing-8);
    transition: all var(--transition);
}

.testimonial-card:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-5px);
}

.testimonial-quote {
    font-size: var(--text-4xl);
    color: var(--primary);
    margin-bottom: var(--spacing-4);
    line-height: 1;
}

.testimonial-text {
    font-size: var(--text-base);
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.8;
    margin-bottom: var(--spacing-6);
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
}

.testimonial-avatar {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--white);
}

.testimonial-info {
    flex: 1;
}

.testimonial-name {
    font-weight: 700;
    color: var(--white);
    margin-bottom: var(--spacing-1);
}

.testimonial-role {
    font-size: var(--text-sm);
    color: rgba(255, 255, 255, 0.6);
}

.testimonial-stars {
    display: flex;
    gap: var(--spacing-1);
    color: var(--warning);
    font-size: var(--text-sm);
}

/* ============================================
   CTA Section
   ============================================ */
.cta {
    background: var(--white);
}

.cta-box {
    background: var(--gradient-primary);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-16);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-box::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 50%);
    animation: pulse 4s infinite;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.1);
        opacity: 0.5;
    }
}

.cta-content {
    position: relative;
    z-index: 1;
}

.cta-title {
    font-size: var(--text-4xl);
    color: var(--white);
    margin-bottom: var(--spacing-4);
}

.cta-description {
    font-size: var(--text-xl);
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-8);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-actions {
    display: flex;
    justify-content: center;
    gap: var(--spacing-4);
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background: var(--secondary-dark);
    color: var(--white);
    padding-top: var(--spacing-16);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-12);
    padding-bottom: var(--spacing-12);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand {
    max-width: 320px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    font-family: var(--font-heading);
    font-size: var(--text-xl);
    font-weight: 800;
    color: var(--white);
    text-decoration: none;
    margin-bottom: var(--spacing-4);
}

.footer-description {
    color: rgba(255, 255, 255, 0.7);
    font-size: var(--text-sm);
    line-height: 1.7;
    margin-bottom: var(--spacing-6);
}

.footer-social {
    display: flex;
    gap: var(--spacing-3);
}

.footer-social a {
    width: 40px;
    height: 40px;
    border-radius: var(--radius);
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    transition: all var(--transition);
}

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

.footer-column h4 {
    color: var(--white);
    font-size: var(--text-base);
    font-weight: 700;
    margin-bottom: var(--spacing-6);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--spacing-3);
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    font-size: var(--text-sm);
    transition: all var(--transition);
}

.footer-links a:hover {
    color: var(--primary);
    padding-left: var(--spacing-2);
}

.footer-contact {
    list-style: none;
}

.footer-contact li {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-3);
    margin-bottom: var(--spacing-4);
    color: rgba(255, 255, 255, 0.7);
    font-size: var(--text-sm);
}

.footer-contact i {
    color: var(--primary);
    margin-top: 3px;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-6) 0;
}

.footer-copyright {
    color: rgba(255, 255, 255, 0.5);
    font-size: var(--text-sm);
}

.footer-legal {
    display: flex;
    gap: var(--spacing-6);
}

.footer-legal a {
    color: rgba(255, 255, 255, 0.5);
    font-size: var(--text-sm);
}

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

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 1200px) {
    .pricing-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .pricing-card.featured {
        transform: none;
    }
}

@media (max-width: 992px) {
    .hero-image {
        display: none;
    }
    
    .hero-content {
        max-width: 100%;
        text-align: center;
    }
    
    .hero-actions {
        justify-content: center;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    :root {
        --text-5xl: 2.5rem;
        --text-4xl: 2rem;
        --text-3xl: 1.5rem;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--secondary);
        flex-direction: column;
        justify-content: center;
        gap: var(--spacing-6);
        transform: translateX(100%);
        transition: transform var(--transition);
    }
    
    .nav-menu.active {
        transform: translateX(0);
    }
    
    .nav-menu .nav-link {
        font-size: var(--text-2xl);
        color: var(--white);
    }
    
    .nav-toggle {
        display: flex;
        z-index: 1001;
    }
    
    .nav-actions .btn {
        display: none;
    }
    
    .features-grid,
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    .pricing-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: var(--spacing-6);
    }
    
    .cta-box {
        padding: var(--spacing-10) var(--spacing-6);
    }
    
    .cta-actions {
        flex-direction: column;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-brand {
        max-width: 100%;
    }
    
    .footer-social {
        justify-content: center;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-4);
        text-align: center;
    }
    
    .footer-legal {
        justify-content: center;
    }
}

/* ============================================
   Utilities
   ============================================ */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-primary { color: var(--primary); }
.text-secondary { color: var(--secondary); }
.text-white { color: var(--white); }
.text-muted { color: var(--gray-500); }

.bg-primary { background-color: var(--primary); }
.bg-secondary { background-color: var(--secondary); }
.bg-white { background-color: var(--white); }
.bg-light { background-color: var(--gray-50); }
.bg-dark { background-color: var(--secondary-dark); }

.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.my-0 { margin-top: 0; margin-bottom: 0; }

.d-flex { display: flex; }
.d-block { display: block; }
.d-none { display: none; }

.align-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }

.gap-2 { gap: var(--spacing-2); }
.gap-4 { gap: var(--spacing-4); }
.gap-6 { gap: var(--spacing-6); }

.w-100 { width: 100%; }

.rounded { border-radius: var(--radius); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-full { border-radius: var(--radius-full); }

/* ============================================
   Animations
   ============================================ */
.fade-in {
    animation: fadeIn 0.6s ease forwards;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.slide-up {
    animation: slideUp 0.6s ease forwards;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Scroll animations */
[data-aos] {
    opacity: 0;
    transition: all 0.6s ease;
}

[data-aos].aos-animate {
    opacity: 1;
}

[data-aos="fade-up"] {
    transform: translateY(40px);
}

[data-aos="fade-up"].aos-animate {
    transform: translateY(0);
}