/* ===== CSS Variables ===== */
:root {
    --primary: #10B981;
    --primary-dark: #059669;
    --primary-light: #34D399;
    --secondary: #6366F1;
    --dark: #0F172A;
    --dark-light: #1E293B;
    --gray-900: #111827;
    --gray-800: #1F2937;
    --gray-700: #374151;
    --gray-600: #4B5563;
    --gray-500: #6B7280;
    --gray-400: #9CA3AF;
    --gray-300: #D1D5DB;
    --gray-200: #E5E7EB;
    --gray-100: #F3F4F6;
    --gray-50: #F9FAFB;
    --white: #FFFFFF;
    --gradient: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-md: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--gray-700);
    background-color: var(--white);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

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

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

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
    color: var(--gray-900);
    font-weight: 700;
    line-height: 1.2;
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
}

h3 {
    font-size: clamp(1.25rem, 2vw, 1.5rem);
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    font-size: 15px;
    font-weight: 600;
    border-radius: 12px;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

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

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

.btn-outline {
    background: transparent;
    color: var(--gray-700);
    border: 2px solid var(--gray-200);
}

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

.btn-ghost {
    background: transparent;
    color: var(--gray-600);
}

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

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

.btn-white:hover {
    background: var(--gray-100);
    transform: translateY(-2px);
}

.btn-lg {
    padding: 16px 32px;
    font-size: 16px;
}

.btn-block {
    width: 100%;
}

.btn-disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

/* ===== Navigation ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--gray-100);
    transition: var(--transition);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 24px;
    font-weight: 800;
    color: var(--gray-900);
}

.logo svg {
    flex-shrink: 0;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    font-size: 15px;
    font-weight: 500;
    color: var(--gray-600);
}

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

.nav-buttons {
    display: flex;
    align-items: center;
    gap: 12px;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--gray-700);
    transition: var(--transition);
}

/* ===== Hero Section ===== */
.hero {
    position: relative;
    padding: 140px 0 80px;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(16, 185, 129, 0.15), transparent),
        radial-gradient(ellipse 60% 40% at 100% 0%, rgba(99, 102, 241, 0.1), transparent);
    z-index: -1;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-content {
    max-width: 560px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--gray-50);
    border: 1px solid var(--gray-200);
    border-radius: 50px;
    font-size: 14px;
    font-weight: 500;
    color: var(--gray-700);
    margin-bottom: 24px;
}

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

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

.hero h1 {
    margin-bottom: 24px;
}

.gradient-text {
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block;
    min-height: 2.4em;
}

.hero-description {
    font-size: 18px;
    color: var(--gray-600);
    margin-bottom: 32px;
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 48px;
}

.hero-stats {
    display: flex;
    gap: 40px;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 28px;
    font-weight: 800;
    color: var(--gray-900);
}

.stat-label {
    font-size: 14px;
    color: var(--gray-500);
}

/* ===== Phone Mockup ===== */
.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
}

.phone-mockup {
    position: relative;
    width: 320px;
    height: 650px;
    background: var(--gray-900);
    border-radius: 45px;
    padding: 12px;
    box-shadow: var(--shadow-xl);
}

.phone-mockup::before {
    content: '';
    position: absolute;
    top: 16px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 24px;
    background: var(--gray-800);
    border-radius: 20px;
    z-index: 10;
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: var(--gray-50);
    border-radius: 35px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.chat-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 48px 16px 16px;
    background: var(--primary);
    color: var(--white);
}

.chat-avatar {
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
}

.chat-info {
    display: flex;
    flex-direction: column;
}

.chat-name {
    font-weight: 600;
    font-size: 15px;
}

.chat-status {
    font-size: 12px;
    opacity: 0.9;
}

.chat-messages {
    flex: 1;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    overflow-y: auto;
}

.message {
    max-width: 85%;
    padding: 12px 14px;
    border-radius: 16px;
    font-size: 14px;
    line-height: 1.4;
    position: relative;
}

.message .time {
    font-size: 10px;
    color: var(--gray-400);
    float: right;
    margin-left: 8px;
    margin-top: 4px;
}

.message.incoming {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-bottom-left-radius: 4px;
    align-self: flex-start;
}

.message.outgoing {
    background: #DCF8C6;
    border-bottom-right-radius: 4px;
    align-self: flex-end;
}

/* Floating Cards */
.floating-card {
    position: absolute;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    background: var(--white);
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
    animation: float 3s ease-in-out infinite;
}

.floating-card span {
    font-size: 14px;
    font-weight: 600;
    color: var(--gray-700);
}

.card-1 {
    top: 15%;
    right: -30px;
    animation-delay: 0s;
}

.card-2 {
    bottom: 20%;
    left: -30px;
    animation-delay: 1.5s;
}

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

/* ===== Trusted By ===== */
.trusted-by {
    padding: 60px 0;
    background: var(--gray-50);
    border-top: 1px solid var(--gray-100);
    border-bottom: 1px solid var(--gray-100);
}

.trusted-text {
    text-align: center;
    font-size: 14px;
    font-weight: 500;
    color: var(--gray-500);
    margin-bottom: 24px;
}

.trusted-logos {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 48px;
    flex-wrap: wrap;
}

.logo-placeholder {
    font-size: 16px;
    font-weight: 600;
    color: var(--gray-400);
    padding: 12px 24px;
    border: 2px dashed var(--gray-200);
    border-radius: 8px;
}

/* ===== Section Styles ===== */
.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 60px;
}

.section-badge {
    display: inline-block;
    padding: 6px 14px;
    background: rgba(16, 185, 129, 0.1);
    color: var(--primary);
    font-size: 13px;
    font-weight: 600;
    border-radius: 50px;
    margin-bottom: 16px;
}

.section-header h2 {
    margin-bottom: 16px;
}

.section-header p {
    font-size: 18px;
    color: var(--gray-500);
}

/* ===== Features Section ===== */
.features {
    padding: 100px 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.feature-card {
    padding: 32px;
    background: var(--white);
    border: 1px solid var(--gray-100);
    border-radius: 20px;
    transition: var(--transition);
}

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

.feature-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 14px;
    margin-bottom: 20px;
}

.feature-card h3 {
    margin-bottom: 12px;
}

.feature-card p {
    color: var(--gray-500);
    font-size: 15px;
}

/* ===== Benefits Section ===== */
.benefits {
    padding: 100px 0;
    background: var(--gray-50);
}

.benefits-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.benefits-text .section-badge {
    margin-bottom: 16px;
}

.benefits-text h2 {
    margin-bottom: 16px;
}

.benefits-text > p {
    font-size: 18px;
    color: var(--gray-500);
    margin-bottom: 32px;
}

.benefits-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.benefits-list li {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.benefits-list li svg {
    flex-shrink: 0;
    margin-top: 2px;
}

.benefits-list li div {
    display: flex;
    flex-direction: column;
}

.benefits-list li strong {
    color: var(--gray-900);
    font-size: 16px;
    margin-bottom: 4px;
}

.benefits-list li span {
    color: var(--gray-500);
    font-size: 14px;
}

.stats-card {
    background: var(--white);
    border-radius: 24px;
    padding: 40px;
    box-shadow: var(--shadow-lg);
}

.stats-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.stats-row:first-child {
    margin-bottom: 24px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--gray-100);
}

.stat-box {
    text-align: center;
}

.stat-value {
    display: block;
    font-size: 42px;
    font-weight: 800;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
}

.stat-desc {
    font-size: 14px;
    color: var(--gray-500);
}

/* ===== How it Works ===== */
.how-it-works {
    padding: 100px 0;
}

.steps {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0;
    max-width: 900px;
    margin: 0 auto;
}

.step {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    flex: 1;
}

.step-number {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient);
    color: var(--white);
    font-size: 24px;
    font-weight: 800;
    border-radius: 50%;
    margin-bottom: 24px;
}

.step-content h3 {
    margin-bottom: 12px;
}

.step-content p {
    font-size: 15px;
    color: var(--gray-500);
    max-width: 220px;
}

.step-connector {
    width: 100px;
    height: 2px;
    background: var(--gray-200);
    margin-bottom: 60px;
}

/* ===== Use Cases ===== */
.use-cases {
    padding: 100px 0;
    background: var(--gray-50);
}

.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.use-case-card {
    padding: 32px;
    background: var(--white);
    border-radius: 20px;
    border: 1px solid var(--gray-100);
    transition: var(--transition);
}

.use-case-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.use-case-icon {
    font-size: 40px;
    margin-bottom: 20px;
}

.use-case-card h3 {
    margin-bottom: 12px;
}

.use-case-card p {
    font-size: 15px;
    color: var(--gray-500);
}

/* ===== Pricing ===== */
.pricing {
    padding: 100px 0;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    max-width: 1200px;
    margin: 0 auto;
}

.pricing-card {
    position: relative;
    padding: 40px 32px;
    background: var(--white);
    border: 2px solid var(--gray-100);
    border-radius: 24px;
    transition: var(--transition);
}

.pricing-card:hover {
    border-color: var(--gray-200);
    box-shadow: var(--shadow-lg);
}

.pricing-card.popular {
    border-color: var(--primary);
    transform: scale(1.05);
}

.popular-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    padding: 6px 16px;
    background: var(--primary);
    color: var(--white);
    font-size: 12px;
    font-weight: 600;
    border-radius: 50px;
}

.pricing-header {
    margin-bottom: 24px;
}

.pricing-header h3 {
    font-size: 20px;
    margin-bottom: 4px;
}

.pricing-header p {
    font-size: 14px;
    color: var(--gray-500);
}

.pricing-price {
    margin-bottom: 32px;
}

.pricing-price .currency {
    font-size: 24px;
    font-weight: 600;
    color: var(--gray-400);
    vertical-align: top;
}

.pricing-price .amount {
    font-size: 56px;
    font-weight: 800;
    color: var(--gray-900);
    line-height: 1;
}

.pricing-price .period {
    font-size: 16px;
    color: var(--gray-500);
}

.pricing-features {
    list-style: none;
    margin-bottom: 32px;
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
    font-size: 15px;
    color: var(--gray-600);
    border-bottom: 1px solid var(--gray-100);
}

.pricing-features li:last-child {
    border-bottom: none;
}

/* ===== FAQ ===== */
.faq {
    padding: 100px 0;
    background: var(--gray-50);
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    padding: 28px;
    background: var(--white);
    border-radius: 16px;
    border: 1px solid var(--gray-100);
}

.faq-item h3 {
    font-size: 16px;
    margin-bottom: 12px;
}

.faq-item p {
    font-size: 15px;
    color: var(--gray-500);
    line-height: 1.6;
}

/* ===== CTA Section ===== */
.cta {
    padding: 100px 0;
    background: var(--gradient);
}

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

.cta h2 {
    color: var(--white);
    margin-bottom: 16px;
}

.cta p {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 32px;
}

.cta-buttons {
    margin-bottom: 24px;
}

.cta-note {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
}

/* ===== Footer ===== */
.footer {
    padding: 80px 0 40px;
    background: var(--gray-900);
    color: var(--gray-400);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-brand .logo {
    color: var(--white);
    margin-bottom: 16px;
}

.footer-brand p {
    font-size: 15px;
    margin-bottom: 24px;
    max-width: 280px;
}

.social-links {
    display: flex;
    gap: 16px;
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--gray-800);
    border-radius: 10px;
    color: var(--gray-400);
    transition: var(--transition);
}

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

.footer-links h4 {
    color: var(--white);
    font-size: 15px;
    margin-bottom: 20px;
}

.footer-links a {
    display: block;
    font-size: 14px;
    color: var(--gray-400);
    padding: 8px 0;
}

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

.footer-bottom {
    padding-top: 32px;
    border-top: 1px solid var(--gray-800);
    text-align: center;
    font-size: 14px;
}

/* ===== Responsive Design ===== */
@media (max-width: 1200px) {
    .pricing-grid {
        grid-template-columns: repeat(2, 1fr);
        max-width: 800px;
    }
}

@media (max-width: 1024px) {
    .features-grid,
    .use-cases-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .pricing-card.popular {
        transform: scale(1);
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .pricing-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
    }

    .nav-links,
    .nav-buttons {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-content {
        max-width: 100%;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .hero-visual {
        margin-top: 48px;
    }
    
    .floating-card {
        display: none;
    }
    
    .benefits-content {
        grid-template-columns: 1fr;
        gap: 48px;
    }
    
    .steps {
        flex-direction: column;
        gap: 24px;
    }
    
    .step-connector {
        width: 2px;
        height: 40px;
        margin-bottom: 0;
    }
    
    .features-grid,
    .use-cases-grid {
        grid-template-columns: 1fr;
    }
    
    .faq-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-brand {
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    
    .social-links {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }
    
    .hero {
        padding: 120px 0 60px;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 24px;
    }
    
    .phone-mockup {
        width: 280px;
        height: 560px;
    }
    
    .trusted-logos {
        gap: 24px;
    }
    
    .logo-placeholder {
        font-size: 14px;
        padding: 8px 16px;
    }
}

/* ===== Animations ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-content,
.hero-visual {
    animation: fadeInUp 0.8s ease-out;
}

.hero-visual {
    animation-delay: 0.2s;
}