/* ===== CSS Reset & Variables ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Colors */
    --primary: #6366F1;
    --primary-dark: #4F46E5;
    --primary-light: #818CF8;
    --secondary: #EC4899;
    --accent: #F59E0B;
    --success: #10B981;

    --dark: #0F172A;
    --dark-light: #1E293B;
    --dark-lighter: #334155;

    --gray: #64748B;
    --gray-light: #94A3B8;
    --gray-lighter: #CBD5E1;
    --gray-lightest: #F1F5F9;

    --white: #FFFFFF;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #667EEA 0%, #764BA2 100%);
    --gradient-secondary: linear-gradient(135deg, #F093FB 0%, #F5576C 100%);
    --gradient-accent: linear-gradient(135deg, #4FACFE 0%, #00F2FE 100%);
    --gradient-warm: linear-gradient(135deg, #FA709A 0%, #FEE140 100%);

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    /* 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);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-2xl: 2rem;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    color: var(--dark);
    background-color: var(--white);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ===== Navigation ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

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

.nav-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--dark);
}

.logo-icon {
    width: 36px;
    height: 36px;
    color: var(--primary);
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.02em;
}

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

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--dark-lighter);
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition-fast);
}

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

.nav-cta {
    background: var(--gradient-primary);
    color: var(--white) !important;
    padding: 0.625rem 1.5rem;
    border-radius: var(--radius-lg);
    font-weight: 600;
    transition: var(--transition);
}

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

.nav-demo-link {
    position: relative;
    color: var(--primary) !important;
    font-weight: 600 !important;
}

.nav-demo-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, #667EEA, #764BA2, #F093FB);
    background-size: 200% 100%;
    border-radius: 2px;
    animation: gradient-shift 3s ease infinite;
}

.nav-demo-link:hover {
    color: var(--primary-dark) !important;
    animation: nav-demo-pulse 1.5s ease-in-out infinite;
}

@keyframes nav-demo-pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

/* ===== Language Selector ===== */
.language-selector-wrapper {
    position: relative;
}

.language-selector {
    position: relative;
}

.language-selector-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: var(--radius-md);
    padding: 0.5rem 0.75rem;
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--dark-lighter);
}

.language-selector-btn:hover {
    background: rgba(99, 102, 241, 0.15);
    border-color: rgba(99, 102, 241, 0.3);
    color: var(--primary);
}

.language-selector-btn svg {
    transition: var(--transition);
}

.language-selector.active .language-selector-btn svg {
    transform: rotate(180deg);
}

.language-flag {
    font-size: 1.125rem;
    line-height: 1;
}

.language-code {
    font-weight: 600;
}

.language-dropdown {
    position: absolute;
    top: calc(100% + 0.5rem);
    right: 0;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    min-width: 160px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition);
    z-index: 1000;
    border: 1px solid var(--gray-lighter);
    overflow: hidden;
}

.language-selector.active .language-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.language-option {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    text-decoration: none;
    color: var(--dark-lighter);
    transition: var(--transition-fast);
    font-size: 0.875rem;
    font-weight: 500;
}

.language-option:hover {
    background: var(--gray-lightest);
    color: var(--primary);
}

.language-option.active {
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary);
    font-weight: 600;
}

.language-option:not(:last-child) {
    border-bottom: 1px solid var(--gray-lighter);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 0.375rem;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.mobile-menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--dark);
    border-radius: 2px;
    transition: var(--transition-fast);
}

/* ===== Hero Section ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    inset: 0;
    z-index: -1;
    overflow: hidden;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.4;
    animation: float 20s infinite ease-in-out;
}

.orb-1 {
    width: 500px;
    height: 500px;
    background: linear-gradient(135deg, #667EEA 0%, #764BA2 100%);
    top: -200px;
    left: -100px;
    animation-delay: 0s;
}

.orb-2 {
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, #F093FB 0%, #F5576C 100%);
    bottom: -150px;
    right: -100px;
    animation-delay: 5s;
}

.orb-3 {
    width: 350px;
    height: 350px;
    background: linear-gradient(135deg, #4FACFE 0%, #00F2FE 100%);
    top: 50%;
    right: 10%;
    animation-delay: 10s;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    33% {
        transform: translate(50px, -50px) scale(1.1);
    }
    66% {
        transform: translate(-30px, 30px) scale(0.9);
    }
}

.hero .container {
    display: flex;
    justify-content: center;
    width: 100%;
}

.hero-content {
    flex: 1;
    max-width: 700px;
    animation: fadeInUp 0.8s ease-out;
}

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

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary);
    padding: 0.5rem 1.25rem;
    border-radius: var(--radius-xl);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.badge-icon {
    font-size: 1.25rem;
}

.hero-title {
    font-size: 4.5rem;
    font-weight: 900;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: var(--spacing-md);
}

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

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--gray);
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    margin-bottom: var(--spacing-lg);
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    font-family: var(--font-family);
}

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

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

.btn-secondary {
    background: var(--white);
    color: var(--dark);
    border: 2px solid var(--gray-lighter);
}

.btn-secondary:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.btn-demo-ai {
    position: relative;
    background: linear-gradient(135deg, #667EEA 0%, #764BA2 50%, #F093FB 100%);
    background-size: 200% 200%;
    color: var(--white);
    border: 2px solid transparent;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4), 0 0 20px rgba(102, 126, 234, 0.2);
    overflow: hidden;
    animation: gradient-shift 3s ease infinite, pulse-glow 2s ease-in-out infinite;
}

.btn-demo-ai::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transform: rotate(45deg);
    animation: shine 3s infinite;
}

.btn-demo-ai:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.6), 0 0 30px rgba(102, 126, 234, 0.4);
    animation: gradient-shift 1.5s ease infinite, pulse-glow 1s ease-in-out infinite;
}

.btn-demo-ai:active {
    transform: translateY(-1px) scale(1.02);
}

.btn-demo-ai .ai-star {
    display: inline-block;
    font-size: 1.2rem;
    margin-right: 0.5rem;
    animation: star-twinkle 2s ease-in-out infinite;
    filter: drop-shadow(0 0 4px rgba(255, 255, 255, 0.8));
}

.btn-demo-ai .ai-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-left: 0.5rem;
    padding: 0.125rem 0.5rem;
    background: rgba(255, 255, 255, 0.25);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    border: 1px solid rgba(255, 255, 255, 0.3);
    animation: badge-pulse 2s ease-in-out infinite;
}

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

@keyframes pulse-glow {
    0%, 100% {
        box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4), 0 0 20px rgba(102, 126, 234, 0.2);
    }
    50% {
        box-shadow: 0 4px 20px rgba(102, 126, 234, 0.6), 0 0 30px rgba(102, 126, 234, 0.4);
    }
}

@keyframes shine {
    0% {
        left: -100%;
    }
    50%, 100% {
        left: 100%;
    }
}

@keyframes star-twinkle {
    0%, 100% {
        transform: scale(1) rotate(0deg);
        opacity: 1;
    }
    25% {
        transform: scale(1.2) rotate(-10deg);
        opacity: 0.8;
    }
    50% {
        transform: scale(1) rotate(0deg);
        opacity: 1;
    }
    75% {
        transform: scale(1.2) rotate(10deg);
        opacity: 0.8;
    }
}

@keyframes badge-pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.1);
        opacity: 0.9;
    }
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

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

.btn-full {
    width: 100%;
    justify-content: center;
}

.hero-stats {
    display: flex;
    gap: 3rem;
}

.stat {
    text-align: left;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--gray);
    font-weight: 500;
}

.hero-visual {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

.chat-demo-section {
    margin-top: var(--spacing-lg);
    display: flex;
    justify-content: center;
    width: 100%;
}

.chat-demo-wrapper {
    width: 100%;
    max-width: 420px;
}

.chat-demo-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    justify-content: center;
}

.chat-tab {
    padding: 0.5rem 1rem;
    background: var(--white);
    border: 2px solid var(--gray-lighter);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--gray);
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.chat-tab:hover {
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.chat-tab.active {
    background: var(--gradient-primary);
    color: var(--white);
    border-color: transparent;
    box-shadow: var(--shadow-md);
}

.chat-demo {
    width: 100%;
    background: var(--white);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-2xl);
    overflow: hidden;
    border: 1px solid var(--gray-lightest);
}

.chat-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--gradient-primary);
    color: var(--white);
}

.chat-avatar {
    width: 48px;
    height: 48px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.chat-name {
    font-weight: 700;
    font-size: 1.125rem;
}

.chat-status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    opacity: 0.9;
}

.status-dot {
    width: 8px;
    height: 8px;
    background: var(--success);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

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

.chat-messages {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    background: var(--gray-lightest);
    min-height: 300px;
}

.message {
    display: flex;
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.message-bot {
    justify-content: flex-start;
}

.message-user {
    justify-content: flex-end;
}

.message-content {
    max-width: 80%;
    padding: 1rem 1.25rem;
    border-radius: var(--radius-lg);
    font-size: 0.95rem;
    line-height: 1.5;
    word-wrap: break-word;
}

.message-content br {
    line-height: 1.8;
}

.message-bot .message-content {
    background: var(--white);
    color: var(--dark);
    border-bottom-left-radius: 0.25rem;
    box-shadow: var(--shadow-sm);
}

.message-user .message-content {
    background: var(--gradient-primary);
    color: var(--white);
    border-bottom-right-radius: 0.25rem;
}

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

.section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto var(--spacing-lg);
}

.section-badge {
    display: inline-block;
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary);
    padding: 0.5rem 1.25rem;
    border-radius: var(--radius-xl);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.section-title {
    font-size: 3rem;
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: -0.02em;
    margin-bottom: var(--spacing-sm);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--gray);
    line-height: 1.7;
}

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

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--white);
    padding: 2.5rem;
    border-radius: var(--radius-xl);
    transition: var(--transition);
    border: 1px solid var(--gray-lighter);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-light);
}

.feature-icon {
    width: 64px;
    height: 64px;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.feature-icon svg {
    width: 32px;
    height: 32px;
    color: var(--white);
}

.feature-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.feature-description {
    color: var(--gray);
    line-height: 1.7;
}

/* ===== How It Works ===== */
.steps {
    display: flex;
    flex-direction: column;
    gap: 3rem;
    max-width: 900px;
    margin: 0 auto;
}

.step {
    display: grid;
    grid-template-columns: 100px 1fr;
    gap: 2rem;
    align-items: start;
}

.step-number {
    width: 100px;
    height: 100px;
    background: var(--gradient-primary);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: 800;
    color: var(--white);
    box-shadow: var(--shadow-lg);
}

.step-content {
    padding-top: 0.5rem;
}

.step-title {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.step-description {
    color: var(--gray);
    line-height: 1.8;
    margin-bottom: 1.5rem;
    font-size: 1.0625rem;
}

.step-features {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.step-tag {
    display: inline-block;
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 600;
}

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

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    max-width: 1100px;
    margin: 0 auto;
}

.pricing-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: 2.5rem;
    border: 2px solid var(--gray-lighter);
    transition: var(--transition);
    position: relative;
}

.pricing-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.pricing-featured {
    border-color: var(--primary);
    box-shadow: var(--shadow-xl);
    transform: scale(1.05);
}

.pricing-featured:hover {
    transform: scale(1.05) translateY(-8px);
}

.pricing-badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient-primary);
    color: var(--white);
    padding: 0.5rem 1.5rem;
    border-radius: var(--radius-xl);
    font-size: 0.875rem;
    font-weight: 700;
    box-shadow: var(--shadow-md);
}

.pricing-header {
    text-align: center;
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--gray-lighter);
}

.pricing-name {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.pricing-price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 0.25rem;
    margin-bottom: 0.75rem;
}

.currency {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray);
}

.amount {
    font-size: 3.5rem;
    font-weight: 900;
    line-height: 1;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.amount-custom {
    font-size: 2rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.period {
    font-size: 1.125rem;
    color: var(--gray);
    font-weight: 600;
}

.pricing-description {
    color: var(--gray);
    font-size: 0.9375rem;
}

.pricing-features {
    list-style: none;
    margin-bottom: 2rem;
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 0;
    color: var(--dark-lighter);
}

.pricing-features svg {
    width: 20px;
    height: 20px;
    color: var(--success);
    flex-shrink: 0;
}

.pricing-cta {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    border-radius: var(--radius-lg);
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
}

/* ===== Testimonials ===== */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.testimonial-card {
    background: var(--white);
    padding: 2.5rem;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    border: 1px solid var(--gray-lighter);
}

.testimonial-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.testimonial-rating {
    display: flex;
    gap: 0.25rem;
    margin-bottom: 1.5rem;
    font-size: 1.25rem;
}

.testimonial-text {
    color: var(--dark-lighter);
    line-height: 1.8;
    margin-bottom: 2rem;
    font-size: 1.0625rem;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.author-avatar {
    width: 56px;
    height: 56px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-weight: 700;
    font-size: 1.125rem;
}

.author-name {
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.author-title {
    font-size: 0.875rem;
    color: var(--gray);
}

/* ===== Contact Section ===== */
.contact {
    background: var(--gray-lightest);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 4rem;
    align-items: start;
}

.contact-title {
    font-size: 2.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.contact-description {
    color: var(--gray);
    line-height: 1.8;
    margin-bottom: 2rem;
    font-size: 1.0625rem;
}

.contact-benefits {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.contact-benefit {
    display: flex;
    align-items: center;
    gap: 1rem;
    color: var(--dark-lighter);
    font-weight: 500;
}

.contact-benefit svg {
    width: 24px;
    height: 24px;
    color: var(--success);
    flex-shrink: 0;
}

.contact-form-wrapper {
    background: var(--white);
    padding: 3rem;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--gray-lighter);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-weight: 600;
    color: var(--dark);
    font-size: 0.9375rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 0.875rem 1rem;
    border: 2px solid var(--gray-lighter);
    border-radius: var(--radius-md);
    font-family: var(--font-family);
    font-size: 1rem;
    transition: var(--transition-fast);
    background: var(--white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

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

.form-disclaimer {
    font-size: 0.875rem;
    color: var(--gray);
    text-align: center;
    margin-top: -0.5rem;
}

/* ===== Footer ===== */
.footer {
    background: var(--dark);
    color: var(--gray-light);
    padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: 4rem;
    margin-bottom: 3rem;
}

.footer-brand .logo {
    color: var(--white);
    margin-bottom: 1.5rem;
}

.footer-description {
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.footer-social {
    display: flex;
    gap: 1rem;
}

.footer-social a {
    width: 40px;
    height: 40px;
    background: var(--dark-lighter);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    transition: var(--transition);
}

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

.footer-social svg {
    width: 20px;
    height: 20px;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.footer-column h4 {
    color: var(--white);
    font-weight: 700;
    margin-bottom: 1rem;
}

.footer-column ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-column a {
    color: var(--gray-light);
    text-decoration: none;
    transition: var(--transition-fast);
    font-size: 0.9375rem;
}

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

.footer-bottom {
    border-top: 1px solid var(--dark-lighter);
    padding-top: 2rem;
    text-align: center;
    font-size: 0.9375rem;
}

/* ===== Responsive Design ===== */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 3.5rem;
    }

    .section-title {
        font-size: 2.5rem;
    }

    .hero {
        flex-direction: column;
        text-align: center;
    }

    .hero-content {
        max-width: 100%;
    }

    .hero-cta {
        justify-content: center;
    }

    .hero-stats {
        justify-content: center;
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .mobile-menu-toggle {
        display: flex;
    }
    
    .language-selector-wrapper {
        width: 100%;
    }
    
    .language-dropdown {
        right: auto;
        left: 0;
        width: 100%;
    }

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

    .section-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1.125rem;
    }

    .hero-cta {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

    .hero-stats {
        flex-direction: column;
        gap: 2rem;
        align-items: center;
    }

    .stat {
        text-align: center;
    }

    .chat-demo-wrapper {
        max-width: 100%;
    }

    .chat-demo-tabs {
        gap: 0.375rem;
    }

    .chat-tab {
        padding: 0.375rem 0.75rem;
        font-size: 0.75rem;
    }

    .features-grid,
    .pricing-grid,
    .testimonials-grid {
        grid-template-columns: 1fr;
    }

    .pricing-featured {
        transform: none;
    }

    .step {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .step-number {
        margin: 0 auto;
    }

    .step-features {
        justify-content: center;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .contact-form-wrapper {
        padding: 2rem;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .footer-links {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-lg: 3rem;
        --spacing-xl: 4rem;
    }

    .hero-title {
        font-size: 2rem;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .hero-badge,
    .section-badge {
        font-size: 0.75rem;
        padding: 0.375rem 1rem;
    }

    .feature-card,
    .testimonial-card {
        padding: 2rem;
    }

    .contact-form-wrapper {
        padding: 1.5rem;
    }
}

/* ===== Black Friday Modal ===== */
.black-friday-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 10000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    animation: fadeIn 0.3s ease-out;
    overflow-y: auto;
}

.black-friday-modal.active {
    display: flex;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.modal-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
}

.modal-content {
    position: relative;
    background: var(--white);
    border-radius: var(--radius-2xl);
    padding: 2rem 2.5rem;
    max-width: 550px;
    width: 100%;
    box-shadow: var(--shadow-2xl);
    animation: slideUp 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 3px solid transparent;
    background-image: linear-gradient(white, white),
                      linear-gradient(135deg, #EF4444 0%, #F59E0B 50%, #EF4444 100%);
    background-origin: border-box;
    background-clip: padding-box, border-box;
    margin: auto;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: var(--gray-lightest);
    border: none;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    color: var(--gray);
    z-index: 10;
}

.modal-close:hover {
    background: var(--gray-lighter);
    color: var(--dark);
    transform: rotate(90deg);
}

.modal-badge {
    display: inline-block;
    background: linear-gradient(135deg, #EF4444 0%, #F59E0B 100%);
    color: var(--white);
    padding: 0.4rem 1.25rem;
    border-radius: var(--radius-xl);
    font-size: 0.75rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 1rem;
    animation: pulse 2s ease-in-out infinite;
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.4);
}

.modal-title {
    font-size: 1.875rem;
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 0.75rem;
    color: var(--dark);
}

.modal-subtitle {
    font-size: 1rem;
    color: var(--gray);
    margin-bottom: 1.5rem;
    line-height: 1.5;
}

.modal-subtitle strong {
    color: #EF4444;
    font-weight: 800;
}

.modal-pricing {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(236, 72, 153, 0.1) 100%);
    padding: 1.5rem;
    border-radius: var(--radius-xl);
    margin-bottom: 1.5rem;
    text-align: center;
}

.price-old,
.price-new {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.price-old:last-child,
.price-new:last-child {
    margin-bottom: 0;
}

.price-label {
    font-size: 0.9375rem;
    color: var(--gray);
    font-weight: 600;
}

.price-amount-old {
    font-size: 1.25rem;
    color: var(--gray);
    text-decoration: line-through;
    font-weight: 600;
}

.price-amount-new {
    font-size: 2.5rem;
    font-weight: 900;
    background: linear-gradient(135deg, #EF4444 0%, #F59E0B 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.modal-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.modal-feature {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--dark-lighter);
    font-weight: 500;
    font-size: 0.9375rem;
}

.modal-feature svg {
    color: var(--success);
    flex-shrink: 0;
}

.modal-cta {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.btn-modal {
    width: 100%;
    justify-content: center;
    padding: 1rem 1.5rem;
    font-size: 1rem;
    font-weight: 700;
}

.modal-disclaimer {
    text-align: center;
    font-size: 0.8125rem;
    color: var(--gray);
    font-style: italic;
    margin: 0;
}

/* Responsive Modal */
@media (max-width: 768px) {
    .black-friday-modal {
        padding: 0.5rem;
    }

    .modal-content {
        padding: 1.75rem 1.5rem;
        max-width: 100%;
    }

    .modal-features {
        grid-template-columns: 1fr;
        gap: 0.625rem;
    }

    .modal-title {
        font-size: 1.5rem;
    }

    .price-amount-new {
        font-size: 2rem;
    }

    .modal-close {
        top: 0.75rem;
        right: 0.75rem;
        width: 32px;
        height: 32px;
    }
}

@media (max-width: 480px) {
    .modal-content {
        padding: 1.5rem 1.25rem;
    }

    .modal-title {
        font-size: 1.375rem;
    }

    .modal-subtitle {
        font-size: 0.9375rem;
    }

    .price-amount-new {
        font-size: 1.75rem;
    }

    .modal-pricing {
        padding: 1.25rem;
    }

    .modal-feature {
        font-size: 0.875rem;
    }
}

/* ===== WhatsApp Floating Button ===== */
.whatsapp-floating-button {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, #25D366 0%, #128C7E 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(37, 211, 102, 0.4), 0 8px 24px rgba(0, 0, 0, 0.15);
    z-index: 999;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    text-decoration: none;
    color: var(--white);
}

.whatsapp-floating-button:hover {
    transform: translateY(-4px) scale(1.05);
    box-shadow: 0 8px 16px rgba(37, 211, 102, 0.5), 0 12px 32px rgba(0, 0, 0, 0.2);
}

.whatsapp-floating-button:active {
    transform: translateY(-2px) scale(1.02);
}

.whatsapp-floating-button svg {
    width: 36px;
    height: 36px;
    fill: currentColor;
}

/* Pulse animation */
@keyframes whatsappPulse {
    0% {
        box-shadow: 0 4px 12px rgba(37, 211, 102, 0.4), 0 8px 24px rgba(0, 0, 0, 0.15);
    }
    50% {
        box-shadow: 0 4px 12px rgba(37, 211, 102, 0.6), 0 8px 24px rgba(0, 0, 0, 0.15), 0 0 0 8px rgba(37, 211, 102, 0.1);
    }
    100% {
        box-shadow: 0 4px 12px rgba(37, 211, 102, 0.4), 0 8px 24px rgba(0, 0, 0, 0.15);
    }
}

.whatsapp-floating-button {
    animation: whatsappPulse 2s ease-in-out infinite;
}

/* Mobile responsive */
@media (max-width: 768px) {
    .whatsapp-floating-button {
        width: 56px;
        height: 56px;
        bottom: 1.5rem;
        right: 1.5rem;
    }

    .whatsapp-floating-button svg {
        width: 32px;
        height: 32px;
    }
}

@media (max-width: 480px) {
    .whatsapp-floating-button {
        width: 52px;
        height: 52px;
        bottom: 1rem;
        right: 1rem;
    }

    .whatsapp-floating-button svg {
        width: 28px;
        height: 28px;
    }
}