/* ========================================
   CSS Variables & Reset
   ======================================== */
:root {
    --primary-red: #DC2626;
    --primary-dark: #991B1B;
    --primary-light: #FEF2F2;
    --dark: #1F2937;
    --gray-dark: #374151;
    --gray: #6B7280;
    --gray-light: #F3F4F6;
    --white: #FFFFFF;
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    line-height: 1.6;
    color: var(--dark);
    background-color: var(--white);
}

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

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

ul {
    list-style: none;
}

/* ========================================
   Container & Layout
   ======================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

section {
    padding: 5rem 0;
}

/* ========================================
   Typography
   ======================================== */
.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 1rem;
    text-align: center;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--gray);
    text-align: center;
    margin-bottom: 3rem;
}

.section-header {
    margin-bottom: 3rem;
}

/* ========================================
   Buttons
   ======================================== */
.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    border-radius: 0.5rem;
    font-weight: 600;
    text-align: center;
    transition: var(--transition);
    cursor: pointer;
    border: 2px solid transparent;
}

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

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(220, 38, 38, 0.2);
}

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

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

.btn-lg {
    padding: 1rem 2.5rem;
    font-size: 1.125rem;
}

.btn-download {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    background-color: var(--dark);
    color: var(--white);
    padding: 0.875rem 1.5rem;
    border-radius: 0.75rem;
    transition: var(--transition);
}

.btn-download:hover {
    background-color: var(--gray-dark);
    transform: translateY(-2px);
}

.btn-download svg {
    flex-shrink: 0;
}

.btn-download span {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.btn-download small {
    font-size: 0.75rem;
    font-weight: 400;
}

.btn-download strong {
    font-size: 1rem;
    font-weight: 600;
}

/* ========================================
   Header & Navigation
   ======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: var(--white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
}

.nav-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-red);
}

.logo-text {
    letter-spacing: 1px;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-list {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    color: var(--dark);
    font-weight: 500;
    transition: var(--transition);
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 0.25rem;
    background: none;
    border: none;
    cursor: pointer;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--dark);
    transition: var(--transition);
}

/* Language Toggle */
.language-toggle {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.lang-btn {
    background: none;
    border: none;
    color: var(--gray);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.lang-btn:hover,
.lang-btn.active {
    color: var(--primary-red);
}

.lang-separator {
    color: var(--gray-light);
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    padding-top: 8rem;
    padding-bottom: 5rem;
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--white) 100%);
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.hero-content {
    max-width: 600px;
}

.hero-title {
    font-size: 3rem;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--gray);
    margin-bottom: 2rem;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.phone-mockup {
    position: relative;
}

.phone-frame {
    width: 300px;
    height: 600px;
    background: linear-gradient(135deg, var(--primary-red), var(--primary-dark));
    border-radius: 2rem;
    padding: 1rem;
    box-shadow: 0 20px 60px rgba(220, 38, 38, 0.3);
}

.phone-screen {
    width: 100%;
    height: 100%;
    background-color: var(--white);
    border-radius: 1.5rem;
}

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

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    padding: 2rem;
    background-color: var(--gray-light);
    border-radius: 1rem;
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background-color: var(--primary-light);
    color: var(--primary-red);
    border-radius: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.feature-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 0.75rem;
}

.feature-description {
    color: var(--gray);
    line-height: 1.6;
}

/* ========================================
   How It Works Section
   ======================================== */
.how-it-works {
    background-color: var(--gray-light);
}

.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
    margin-top: 3rem;
}

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

.step-number {
    width: 80px;
    height: 80px;
    background-color: var(--primary-red);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.step-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 0.75rem;
}

.step-description {
    color: var(--gray);
}

/* ========================================
   Stats Section
   ======================================== */
.stats {
    background-color: var(--primary-red);
    color: var(--white);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    text-align: center;
}

.stat-number {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1.125rem;
    opacity: 0.9;
}

/* ========================================
   Benefits Section
   ======================================== */
.benefits {
    background-color: var(--white);
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.benefit {
    text-align: center;
}

.benefit-icon {
    width: 50px;
    height: 50px;
    background-color: var(--primary-red);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto 1rem;
}

.benefit-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 0.75rem;
}

.benefit-description {
    color: var(--gray);
}

/* ========================================
   Testimonials Section
   ======================================== */
.testimonials {
    background-color: var(--gray-light);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
}

.testimonial {
    background-color: var(--white);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.testimonial-quote {
    font-size: 1.125rem;
    color: var(--dark);
    margin-bottom: 1.5rem;
    font-style: italic;
    line-height: 1.8;
}

.testimonial-author {
    display: flex;
    flex-direction: column;
}

.testimonial-author strong {
    color: var(--dark);
    margin-bottom: 0.25rem;
}

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

/* ========================================
   Final CTA Section
   ======================================== */
.final-cta {
    background: linear-gradient(135deg, var(--primary-red), var(--primary-dark));
    color: var(--white);
    text-align: center;
}

.final-cta-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

.final-cta-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.download-buttons {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    flex-wrap: wrap;
}

/* ========================================
   Footer
   ======================================== */
.footer {
    background-color: var(--dark);
    color: var(--white);
    padding: 4rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.footer-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-red);
    margin-bottom: 1rem;
}

.footer-tagline {
    color: var(--gray);
    margin-bottom: 1.5rem;
}

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

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

.social-link:hover {
    background-color: var(--primary-red);
    transform: translateY(-3px);
}

.footer-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-links a {
    color: var(--gray);
    transition: var(--transition);
}

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

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--gray-dark);
    color: var(--gray);
}

/* ========================================
   Animations
   ======================================== */
.fade-in {
    animation: fadeIn 0.8s ease-in;
}

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

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 968px) {
    .hero .container {
        grid-template-columns: 1fr;
    }

    .hero-image {
        order: -1;
    }

    .phone-frame {
        width: 250px;
        height: 500px;
    }

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

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

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

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background-color: var(--white);
        flex-direction: column;
        padding: 2rem;
        transition: var(--transition);
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-list {
        flex-direction: column;
        width: 100%;
    }

    .nav-link {
        width: 100%;
        padding: 0.75rem 0;
    }

    .nav-toggle {
        display: flex;
    }

    .hero {
        padding-top: 6rem;
    }

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

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

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

    .btn {
        width: 100%;
        text-align: center;
    }

    section {
        padding: 3rem 0;
    }

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

    .final-cta-title {
        font-size: 1.75rem;
    }

    .download-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn-download {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }

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

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

    .stat-number {
        font-size: 2rem;
    }
}