/* ============================================
   Pass65 - Premium Minimal Design System
   ============================================ */

/* CSS Variables */
:root {
    /* Colors */
    --color-primary: #10B981;
    --color-primary-dark: #059669;
    --color-primary-light: #D1FAE5;
    --color-black: #0A0A0A;
    --color-gray-900: #171717;
    --color-gray-800: #262626;
    --color-gray-700: #404040;
    --color-gray-600: #525252;
    --color-gray-500: #737373;
    --color-gray-400: #A3A3A3;
    --color-gray-300: #D4D4D4;
    --color-gray-200: #E5E5E5;
    --color-gray-100: #F5F5F5;
    --color-white: #FFFFFF;
    --color-error: #EF4444;
    --color-success: #10B981;

    /* Typography */
    --font-display: 'Instrument Serif', Georgia, serif;
    --font-body: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 24px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;
    --transition-slower: 500ms ease;
}

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-gray-900);
    background-color: var(--color-white);
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-body);
    font-weight: 600;
    line-height: 1.2;
}

a {
    color: inherit;
    text-decoration: none;
}

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

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input, select, textarea {
    font-family: inherit;
    font-size: inherit;
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
}

/* ============================================
   Navigation
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-gray-200);
    transition: all var(--transition-base);
}

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

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

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

.logo-icon {
    width: 36px;
    height: 36px;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-black);
    letter-spacing: -0.02em;
}

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

/* Language Selector */
.lang-selector {
    position: relative;
}

.lang-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--color-gray-600);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.lang-btn:hover {
    color: var(--color-gray-900);
    background: var(--color-gray-100);
}

.lang-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    min-width: 140px;
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-fast);
}

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

.lang-option {
    display: block;
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    text-align: left;
    color: var(--color-gray-700);
    transition: all var(--transition-fast);
}

.lang-option:first-child {
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.lang-option:last-child {
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

.lang-option:hover,
.lang-option.active {
    background: var(--color-gray-100);
    color: var(--color-primary);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    white-space: nowrap;
}

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

.btn-primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

.btn-large {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1.0625rem;
    border-radius: var(--radius-lg);
}

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

.btn-white:hover {
    background: var(--color-gray-100);
    transform: translateY(-1px);
}

.btn-full {
    width: 100%;
}

.btn-nav {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.9375rem;
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-gradient {
    position: absolute;
    top: -50%;
    right: -20%;
    width: 80%;
    height: 150%;
    background: radial-gradient(ellipse at center, rgba(16, 185, 129, 0.08) 0%, transparent 70%);
    pointer-events: none;
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(0, 0, 0, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 0, 0, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 640px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-xs) var(--spacing-md) var(--spacing-xs) var(--spacing-sm);
    background: var(--color-primary-light);
    color: var(--color-primary-dark);
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: var(--radius-full);
    margin-bottom: var(--spacing-xl);
}

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

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

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.1;
    margin-bottom: var(--spacing-lg);
}

.title-accent {
    display: block;
    font-family: var(--font-display);
    font-weight: 400;
    font-style: italic;
    color: var(--color-primary);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-gray-600);
    line-height: 1.7;
    margin-bottom: var(--spacing-2xl);
}

.hero-cta {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-3xl);
}

.cta-note {
    font-size: 0.875rem;
    color: var(--color-gray-500);
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
    padding: var(--spacing-xl);
    background: var(--color-gray-100);
    border-radius: var(--radius-xl);
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-black);
    letter-spacing: -0.02em;
}

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

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--color-gray-300);
}

/* Hero Visual - Demo Showcase */
.hero-visual {
    position: absolute;
    right: 5%;
    top: 50%;
    transform: translateY(-50%);
    width: 45%;
    max-width: 520px;
    z-index: 1;
}

.demo-showcase {
    position: relative;
    pointer-events: none;
    user-select: none;
}

.demo-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, var(--color-primary), #059669);
    color: var(--color-white);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.8125rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

.demo-label svg {
    stroke: var(--color-white);
}

.demo-window {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    box-shadow:
        var(--shadow-2xl),
        0 0 0 1px rgba(16, 185, 129, 0.1),
        0 20px 40px -10px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    border: 2px solid rgba(16, 185, 129, 0.2);
    position: relative;
}

.demo-window::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.02), transparent);
    pointer-events: none;
}

.demo-header {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md) var(--spacing-lg);
    background: linear-gradient(to right, rgba(16, 185, 129, 0.08), rgba(16, 185, 129, 0.04));
    border-bottom: 1px solid rgba(16, 185, 129, 0.15);
}

.demo-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--color-gray-800);
}

.demo-content {
    padding: var(--spacing-xl);
    min-height: 300px;
}

.demo-badge {
    text-align: center;
    margin-top: var(--spacing-md);
    font-size: 0.75rem;
    color: var(--color-gray-500);
    font-weight: 500;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.chat-message {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.chat-message.user {
    flex-direction: row-reverse;
}

.chat-avatar {
    flex-shrink: 0;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary);
    color: var(--color-white);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-md);
}

.chat-bubble {
    max-width: 80%;
    padding: var(--spacing-md);
    background: var(--color-gray-100);
    border-radius: var(--radius-lg);
    font-size: 0.9375rem;
    line-height: 1.5;
}

.chat-message.user .chat-bubble {
    background: var(--color-primary);
    color: var(--color-white);
}

.correct-badge {
    display: inline-block;
    padding: 2px 8px;
    background: var(--color-primary);
    color: var(--color-white);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    margin-right: var(--spacing-xs);
}

.chat-typing {
    display: flex;
    gap: 4px;
    padding: var(--spacing-md);
    background: var(--color-gray-100);
    border-radius: var(--radius-lg);
    width: fit-content;
}

.chat-typing span {
    width: 8px;
    height: 8px;
    background: var(--color-gray-400);
    border-radius: 50%;
    animation: typing 1.4s infinite;
}

.chat-typing span:nth-child(2) { animation-delay: 0.2s; }
.chat-typing span:nth-child(3) { animation-delay: 0.4s; }

@keyframes typing {
    0%, 60%, 100% { transform: translateY(0); }
    30% { transform: translateY(-4px); }
}

/* ============================================
   Social Proof Section
   ============================================ */
.social-proof {
    padding: var(--spacing-3xl) 0;
    background: var(--color-gray-100);
    border-top: 1px solid var(--color-gray-200);
    border-bottom: 1px solid var(--color-gray-200);
}

.proof-text {
    text-align: center;
    color: var(--color-gray-500);
    font-size: 0.9375rem;
    margin-bottom: var(--spacing-xl);
}

.proof-logos {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-3xl);
    flex-wrap: wrap;
}

.proof-item {
    text-align: center;
}

.proof-number {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-black);
}

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

.proof-divider {
    width: 1px;
    height: 40px;
    background: var(--color-gray-300);
}

/* ============================================
   Section Headers
   ============================================ */
.section-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto var(--spacing-3xl);
}

.section-tag {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--color-primary-light);
    color: var(--color-primary-dark);
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: var(--radius-full);
    margin-bottom: var(--spacing-md);
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: var(--spacing-md);
}

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

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

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

.pain-card {
    padding: var(--spacing-2xl);
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
}

.pain-card:hover {
    border-color: var(--color-gray-300);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.pain-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-gray-100);
    color: var(--color-gray-700);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
}

.pain-card h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

.pain-card p {
    color: var(--color-gray-600);
    font-size: 0.9375rem;
}

/* ============================================
   Features Section
   ============================================ */
.features-section {
    padding: var(--spacing-4xl) 0;
    background: var(--color-gray-100);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xl);
}

.feature-card {
    padding: var(--spacing-2xl);
    background: var(--color-white);
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-gray-200);
    transition: all var(--transition-base);
}

.feature-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.feature-large {
    grid-column: span 2;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

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

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

.feature-card p {
    color: var(--color-gray-600);
    font-size: 0.9375rem;
    line-height: 1.7;
}

.feature-visual {
    background: var(--color-gray-100);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
}

.feature-demo {
    background: var(--color-white);
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--color-gray-200);
}

.demo-chat {
    padding: var(--spacing-md);
}

.demo-msg {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-sm);
}

.demo-msg.user {
    background: var(--color-primary);
    color: var(--color-white);
    margin-left: 20%;
}

.demo-msg.ai {
    background: var(--color-gray-100);
    margin-right: 20%;
}

/* ============================================
   How It Works Section
   ============================================ */
.how-section {
    padding: var(--spacing-4xl) 0;
}

.steps-grid {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: var(--spacing-lg);
}

.step-card {
    flex: 1;
    max-width: 320px;
    padding: var(--spacing-2xl);
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-xl);
    text-align: center;
    transition: all var(--transition-base);
}

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

.step-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-primary-light);
    letter-spacing: -0.02em;
    margin-bottom: var(--spacing-md);
}

.step-card h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

.step-card p {
    color: var(--color-gray-600);
    font-size: 0.9375rem;
}

.step-connector {
    display: flex;
    align-items: center;
    color: var(--color-gray-300);
    padding-top: 60px;
}

/* ============================================
   Guarantee Section
   ============================================ */
.guarantee-section {
    padding: var(--spacing-4xl) 0;
    background: var(--color-gray-100);
}

.guarantee-card {
    display: flex;
    gap: var(--spacing-3xl);
    padding: var(--spacing-3xl);
    background: var(--color-white);
    border-radius: var(--radius-2xl);
    border: 2px solid var(--color-primary);
    box-shadow: var(--shadow-lg);
}

.guarantee-icon {
    flex-shrink: 0;
    width: 96px;
    height: 96px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary-light);
    color: var(--color-primary);
    border-radius: var(--radius-xl);
}

.guarantee-content h2 {
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
}

.guarantee-content > p {
    color: var(--color-gray-600);
    font-size: 1.0625rem;
    line-height: 1.7;
    margin-bottom: var(--spacing-xl);
}

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

.term {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-gray-700);
}

.term svg {
    color: var(--color-primary);
}

/* ============================================
   CTA Section
   ============================================ */
.cta-section {
    padding: var(--spacing-4xl) 0;
    background: var(--color-black);
    color: var(--color-white);
}

.cta-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.cta-content h2 {
    font-size: clamp(2rem, 4vw, 2.75rem);
    margin-bottom: var(--spacing-md);
}

.cta-content > p {
    color: var(--color-gray-400);
    font-size: 1.125rem;
    margin-bottom: var(--spacing-2xl);
}

.cta-note-light {
    display: block;
    margin-top: var(--spacing-lg);
    color: var(--color-gray-500);
    font-size: 0.875rem;
}

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

.faq-grid {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    border-bottom: 1px solid var(--color-gray-200);
}

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-xl) 0;
    font-size: 1.0625rem;
    font-weight: 500;
    text-align: left;
    color: var(--color-gray-900);
    transition: color var(--transition-fast);
}

.faq-question:hover {
    color: var(--color-primary);
}

.faq-question svg {
    flex-shrink: 0;
    transition: transform var(--transition-base);
}

.faq-item.active .faq-question svg {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow);
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding-bottom: var(--spacing-xl);
    color: var(--color-gray-600);
    line-height: 1.7;
}

/* ============================================
   Footer
   ============================================ */
.footer {
    padding: var(--spacing-4xl) 0 var(--spacing-2xl);
    background: var(--color-gray-100);
    border-top: 1px solid var(--color-gray-200);
}

.footer-main {
    display: flex;
    justify-content: space-between;
    gap: var(--spacing-3xl);
    margin-bottom: var(--spacing-3xl);
}

.footer-brand {
    max-width: 280px;
}

.footer-brand .logo {
    margin-bottom: var(--spacing-md);
}

.footer-tagline {
    color: var(--color-gray-500);
    font-size: 0.9375rem;
}

.footer-links {
    display: flex;
    gap: var(--spacing-4xl);
}

.footer-col h4 {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-lg);
}

.footer-col a {
    display: block;
    color: var(--color-gray-600);
    font-size: 0.9375rem;
    padding: var(--spacing-xs) 0;
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-2xl);
    border-top: 1px solid var(--color-gray-200);
}

.footer-bottom p {
    color: var(--color-gray-500);
    font-size: 0.875rem;
}

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

.footer-social a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--color-white);
    color: var(--color-gray-600);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.footer-social a:hover {
    background: var(--color-primary);
    color: var(--color-white);
}

/* ============================================
   Modal
   ============================================ */
.modal-overlay {
    position: fixed;
    inset: 0;
    z-index: 2000;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    position: relative;
    width: 100%;
    max-width: 440px;
    background: var(--color-white);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-2xl);
    transform: scale(0.95) translateY(20px);
    transition: transform var(--transition-base);
}

.modal-overlay.active .modal {
    transform: scale(1) translateY(0);
}

.modal-close {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-gray-400);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    z-index: 1;
}

.modal-close:hover {
    background: var(--color-gray-100);
    color: var(--color-gray-700);
}

.modal-content {
    padding: var(--spacing-2xl);
}

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

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

.modal-header p {
    color: var(--color-gray-500);
}

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

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

.form-group label {
    font-weight: 500;
    font-size: 0.9375rem;
}

.form-group input,
.form-group select {
    padding: var(--spacing-md);
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    font-size: 1rem;
    transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

.form-group input::placeholder {
    color: var(--color-gray-400);
}

.form-note {
    text-align: center;
    font-size: 0.8125rem;
    color: var(--color-gray-500);
}

/* Modal Success State */
.modal-success {
    display: none;
    text-align: center;
    padding: var(--spacing-xl) 0;
}

.modal-success.active {
    display: block;
}

.modal-form.hidden {
    display: none;
}

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

.modal-success h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary);
}

.modal-success p {
    color: var(--color-gray-600);
}

/* ============================================
   Animations
   ============================================ */
[data-animate] {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-animate="fade-left"] {
    transform: translateX(50px);
}

[data-animate].animated {
    opacity: 1;
    transform: translateY(0) translateX(0);
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 1024px) {
    .hero {
        flex-direction: column;
        padding: 120px 0 60px;
    }

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

    .hero-cta {
        align-items: center;
    }

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

    .hero-visual {
        position: relative;
        right: auto;
        top: auto;
        transform: none;
        width: 100%;
        max-width: 500px;
        margin: var(--spacing-3xl) auto 0;
    }

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

    .feature-large {
        grid-column: span 1;
        grid-template-columns: 1fr;
    }

    .steps-grid {
        flex-direction: column;
        align-items: center;
    }

    .step-connector {
        transform: rotate(90deg);
        padding: var(--spacing-md) 0;
    }

    .guarantee-card {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-md);
    }

    .nav-container {
        padding: 0 var(--spacing-md);
    }

    .pain-grid {
        grid-template-columns: 1fr;
    }

    .footer-main {
        flex-direction: column;
    }

    .footer-links {
        flex-wrap: wrap;
        gap: var(--spacing-2xl);
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-lg);
        text-align: center;
    }

    .hero-stats {
        flex-direction: column;
        gap: var(--spacing-lg);
    }

    .stat-divider {
        width: 40px;
        height: 1px;
    }

    .proof-logos {
        flex-direction: column;
        gap: var(--spacing-xl);
    }

    .proof-divider {
        width: 40px;
        height: 1px;
    }
}

@media (max-width: 480px) {
    .btn-large {
        width: 100%;
    }

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

    .hero-subtitle {
        font-size: 1rem;
    }

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