* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #0F172A;
    --primary-light: #1E293B;
    --accent: #3B82F6;
    --text: #1E293B;
    --text-light: #64748B;
    --bg: #FFFFFF;
    --bg-alt: #F8FAFC;
    --border: #E2E8F0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--text);
    background: var(--bg);
    line-height: 1.6;
    overflow-x: hidden;
}

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

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-20px);
    }
}

.fade-in {
    animation: fadeIn 0.8s ease-out;
}

.slide-in {
    animation: slideIn 0.8s ease-out;
}

[data-aos] {
    opacity: 0;
    transition: all 0.6s ease-out;
}

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

[data-aos="fade-up"] {
    transform: translateY(50px);
}

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

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

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

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

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

[data-aos="zoom-in"] {
    transform: scale(0.8);
}

[data-aos="zoom-in"].aos-animate {
    transform: scale(1);
}

[data-aos="flip-up"] {
    transform: perspective(2500px) rotateX(-100deg);
}

[data-aos="flip-up"].aos-animate {
    transform: perspective(2500px) rotateX(0);
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
    transition: box-shadow 0.3s;
}

.header:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

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

.logo h1 {
    font-size: 28px;
    font-weight: 700;
    color: var(--primary);
    transition: color 0.3s;
}

.logo h1:hover {
    color: var(--accent);
}

.nav {
    display: flex;
    gap: 32px;
}

.nav a {
    color: var(--text);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
    position: relative;
}

.nav a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: width 0.3s;
}

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

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

/* Hero Section */
.hero {
    padding: 160px 0 120px;
    background: linear-gradient(180deg, #F8FAFC 0%, #FFFFFF 100%);
}

.hero-content {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(360px, 0.95fr);
    gap: 80px;
    align-items: center;
}

.hero-title {
    font-size: 64px;
    font-weight: 700;
    line-height: 0.98;
    letter-spacing: -0.04em;
    color: var(--primary);
    margin-bottom: 24px;
    max-width: 620px;
}

.hero-description {
    font-size: 22px;
    color: var(--text-light);
    margin-bottom: 24px;
    line-height: 1.45;
    max-width: 620px;
}

.hero-highlight {
    display: flex;
    gap: 16px;
    align-items: flex-start;
    padding: 18px 22px;
    background: linear-gradient(135deg, #EEF2FF 0%, #E0E7FF 100%);
    border-radius: 12px;
    border-left: 4px solid var(--accent);
    margin-bottom: 32px;
    max-width: 620px;
}

.hero-highlight svg {
    color: var(--accent);
    flex-shrink: 0;
    margin-top: 2px;
}

.hero-highlight p {
    margin: 0;
    font-size: 15px;
    line-height: 1.55;
    color: var(--text);
}

.hero-highlight strong {
    color: var(--accent);
    font-weight: 700;
}

.hero-buttons {
    display: flex;
    gap: 16px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 16px 32px;
    border-radius: 12px;
    font-weight: 600;
    font-size: 16px;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: none;
    cursor: pointer;
}

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

.btn-primary:hover {
    background: var(--primary-light);
    transform: translateY(-2px);
    box-shadow: 0 12px 24px rgba(15, 23, 42, 0.15);
}

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

.btn-secondary:hover {
    border-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: 0 12px 24px rgba(15, 23, 42, 0.08);
}

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

.btn-light:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 24px rgba(255, 255, 255, 0.2);
}

/* Phone Showcase */
.phone-showcase {
    position: relative;
    width: 100%;
    max-width: 320px;
    margin: 0 auto;
    animation: float 6s ease-in-out infinite;
}

.hero-screens {
    position: relative;
    width: 100%;
    margin: 0 auto;
    overflow: hidden;
    background: transparent;
    box-shadow: none;
}

.hero-screen {
    display: none;
    width: 100%;
    height: auto;
    object-fit: contain;
    object-position: center center;
}

.hero-screen.is-active {
    display: block;
}

/* Features Section */
.features {
    padding: 120px 0;
    background: var(--bg);
}

.section-title {
    font-size: 48px;
    font-weight: 700;
    text-align: center;
    color: var(--primary);
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: 20px;
    color: var(--text-light);
    text-align: center;
    margin-bottom: 80px;
}

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

.feature-card {
    padding: 40px;
    background: white;
    border: 1px solid var(--border);
    border-radius: 20px;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 24px 48px rgba(0, 0, 0, 0.08);
    border-color: transparent;
}

.feature-icon {
    width: 64px;
    height: 64px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    color: white;
    transition: transform 0.3s;
}

.feature-card:hover .feature-icon {
    transform: scale(1.1) rotate(5deg);
}

.feature-card h3 {
    font-size: 22px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 12px;
}

.feature-card p {
    color: var(--text-light);
    line-height: 1.6;
}

/* Screenshots Section */
.screenshots {
    padding: 120px 0;
    background: var(--bg-alt);
}

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

.screenshot-card {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid var(--border);
    transition: all 0.4s;
    cursor: pointer;
}

.screenshot-card:hover {
    transform: scale(1.05);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.screenshot-card img {
    width: 100%;
    height: auto;
    display: block;
}

.screenshot-label {
    padding: 16px;
    text-align: center;
    font-weight: 600;
    color: var(--primary);
    background: white;
}

/* About Section */
.about {
    padding: 120px 0;
    background: var(--bg);
}

.about-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-text h2 {
    font-size: 42px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 24px;
}

.about-highlight {
    padding: 32px;
    background: linear-gradient(135deg, #DBEAFE 0%, #BFDBFE 100%);
    border-radius: 16px;
    margin-bottom: 40px;
    border: 2px solid #93C5FD;
}

.about-highlight h3 {
    font-size: 22px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 16px;
}

.about-highlight p {
    font-size: 16px;
    line-height: 1.8;
    color: var(--text);
    margin: 0;
}

.about-features {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.about-feature {
    display: flex;
    gap: 20px;
    transition: transform 0.3s;
}

.about-feature:hover {
    transform: translateX(10px);
}

.about-feature-icon {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--accent);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    flex-shrink: 0;
}

.about-feature h4 {
    font-size: 18px;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 8px;
}

.about-feature p {
    color: var(--text-light);
    line-height: 1.6;
}

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

.stat-card {
    padding: 32px;
    background: white;
    border-radius: 20px;
    border: 1px solid var(--border);
    text-align: center;
    transition: all 0.3s;
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.08);
}

.stat-number {
    font-size: 48px;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 8px;
}

.stat-label {
    color: var(--text-light);
    font-size: 16px;
}

/* Contact Section */
.contact {
    padding: 120px 0;
    background: var(--bg-alt);
}

.contact-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    max-width: 1000px;
    margin: 0 auto;
}

.contact-card {
    padding: 48px;
    background: white;
    border: 1px solid var(--border);
    border-radius: 20px;
    text-align: center;
    transition: all 0.4s;
}

.contact-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.contact-icon {
    width: 64px;
    height: 64px;
    background: var(--bg-alt);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    color: var(--accent);
    transition: all 0.3s;
}

.contact-card:hover .contact-icon {
    background: var(--accent);
    color: white;
    transform: scale(1.1);
}

.contact-card h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 12px;
}

.contact-card a {
    color: var(--accent);
    text-decoration: none;
    font-weight: 500;
    font-size: 18px;
    transition: color 0.2s;
}

.contact-card a:hover {
    text-decoration: underline;
}

/* CTA Section */
.cta {
    padding: 120px 0;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
}

.cta-content {
    text-align: center;
    color: white;
}

.cta-content h2 {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 16px;
}

.cta-content p {
    font-size: 20px;
    margin-bottom: 40px;
    opacity: 0.9;
}

.cta-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
}

/* Footer */
.footer {
    padding: 80px 0 40px;
    background: var(--bg-alt);
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: 80px;
    margin-bottom: 60px;
}

.footer-brand h3 {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 12px;
}

.footer-brand p {
    color: var(--text-light);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.footer-column h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 16px;
}

.footer-column a {
    display: block;
    color: var(--text-light);
    text-decoration: none;
    margin-bottom: 12px;
    transition: all 0.2s;
}

.footer-column a:hover {
    color: var(--accent);
    transform: translateX(4px);
}

.footer-bottom {
    padding-top: 40px;
    border-top: 1px solid var(--border);
    text-align: center;
    color: var(--text-light);
}

/* Responsive */
@media (max-width: 768px) {
    body {
        font-size: 15px;
    }

    .container {
        padding: 0 16px;
    }

    .header-content {
        height: 64px;
    }

    .hero {
        padding: 120px 0 80px;
    }

    .hero-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .hero-title {
        font-size: 34px;
        line-height: 1.15;
        max-width: none;
    }

    .hero-description {
        font-size: 17px;
        max-width: none;
    }

    .hero-highlight {
        margin-bottom: 28px;
        padding: 16px 18px;
        max-width: none;
    }

    .phone-showcase {
        max-width: 260px;
    }

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

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

    .features {
        padding: 80px 0;
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .feature-card {
        padding: 24px;
    }

    .screenshots {
        padding: 80px 0;
    }

    .screenshots-grid {
        grid-template-columns: 1fr 1fr;
        gap: 16px;
    }

    .about {
        padding: 80px 0;
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .about-highlight {
        padding: 20px;
    }

    .contact {
        padding: 80px 0;
    }

    .contact-cards {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .contact-card {
        padding: 28px 24px;
    }

    .cta {
        padding: 80px 0;
    }

    .cta-content h2 {
        font-size: 30px;
    }

    .section-title {
        font-size: 30px;
    }

    .section-subtitle {
        font-size: 17px;
        margin-bottom: 40px;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .footer-links {
        grid-template-columns: 1fr 1fr;
        gap: 24px;
    }

    .nav {
        display: none;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 14px;
    }

    .hero {
        padding: 110px 0 64px;
    }

    .hero-title {
        font-size: 28px;
    }

    .hero-description {
        font-size: 16px;
    }

    .hero-highlight p {
        font-size: 14px;
    }

    .section-title {
        font-size: 26px;
    }

    .section-subtitle {
        font-size: 15px;
    }

    .feature-card h3 {
        font-size: 20px;
    }

    .feature-card p {
        font-size: 14px;
    }

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

    .contact-card a {
        font-size: 16px;
    }

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