/* ================================
   GLOBAL STYLES
   ================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #4F46E5;
    --primary-dark: #4338CA;
    --secondary-color: #10B981;
    --text-color: #1F2937;
    --text-light: #6B7280;
    --bg-light: #F9FAFB;
    --bg-white: #FFFFFF;
    --border-color: #E5E7EB;
    --success-color: #10B981;
    --danger-color: #EF4444;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: var(--text-color);
    line-height: 1.6;
    background-color: var(--bg-white);
}

html {
    scroll-behavior: smooth;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ================================
   NAVIGATION
   ================================ */
.navbar {
    background-color: var(--bg-white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo a {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    font-weight: bold;
}

.logo-icon {
    font-size: 28px;
}

.logo-text {
    font-size: 24px;
    color: var(--primary-color);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    transition: color 0.3s;
    font-weight: 500;
}

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

/* ================================
   BUTTONS
   ================================ */
.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
    font-size: 16px;
}

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

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(79, 70, 229, 0.3);
}

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

.btn-secondary:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

.btn-large {
    padding: 15px 40px;
    font-size: 18px;
}

/* ================================
   HERO SECTION
   ================================ */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 80px 0;
    margin-top: 0;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.hero-content h1 {
    font-size: 48px;
    margin-bottom: 20px;
    font-weight: 700;
    line-height: 1.2;
}

.hero-content p {
    font-size: 18px;
    margin-bottom: 30px;
    opacity: 0.95;
}

.hero-buttons {
    display: flex;
    gap: 20px;
}

.hero-buttons .btn {
    display: flex;
    align-items: center;
    gap: 8px;
}

/* Phone Mockup */
.phone-mockup {
    background: white;
    border-radius: 40px;
    padding: 12px;
    max-width: 250px;
    margin: 0 auto;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.phone-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    height: 30px;
    border-radius: 30px;
    margin-bottom: 10px;
}

.phone-content {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    border-radius: 30px;
    padding: 30px 20px;
    text-align: center;
    color: white;
    min-height: 400px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.app-icon {
    font-size: 50px;
    margin-bottom: 15px;
}

.app-text {
    font-size: 24px;
    font-weight: bold;
    margin-bottom: 30px;
}

.feature-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.feature-item {
    background: rgba(255, 255, 255, 0.2);
    padding: 10px 15px;
    border-radius: 8px;
    font-size: 14px;
}

/* ================================
   FEATURES SECTION
   ================================ */
.features {
    padding: 80px 0;
    background-color: var(--bg-light);
}

.features h2,
.benefits h2,
.screenshots h2,
.pricing h2,
.faq h2 {
    text-align: center;
    font-size: 42px;
    margin-bottom: 50px;
    color: var(--text-color);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.feature-card {
    background: white;
    padding: 30px;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.feature-icon {
    font-size: 48px;
    margin-bottom: 15px;
}

.feature-card h3 {
    font-size: 22px;
    margin-bottom: 15px;
    color: var(--text-color);
}

.feature-card p {
    color: var(--text-light);
    line-height: 1.8;
}

/* ================================
   BENEFITS SECTION
   ================================ */
.benefits {
    padding: 80px 0;
    background-color: var(--bg-white);
}

.benefits-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.benefit-item {
    display: flex;
    gap: 20px;
    padding: 30px;
    background: var(--bg-light);
    border-radius: 12px;
    border-left: 4px solid var(--primary-color);
}

.benefit-icon {
    font-size: 32px;
    flex-shrink: 0;
}

.benefit-text h3 {
    font-size: 18px;
    margin-bottom: 10px;
}

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

/* ================================
   SCREENSHOTS SECTION
   ================================ */
.screenshots {
    padding: 80px 0;
    background-color: var(--bg-light);
}

.screenshots-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

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

.screenshot-frame {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    margin-bottom: 15px;
}

.screenshot-placeholder {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 100px 30px;
    text-align: center;
    font-size: 18px;
    font-weight: bold;
}

.screenshot-item p {
    color: var(--text-color);
    font-weight: 600;
}

/* ================================
   PRICING SECTION
   ================================ */
.pricing {
    padding: 80px 0;
    background-color: var(--bg-white);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.pricing-card {
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 40px 30px;
    position: relative;
    transition: all 0.3s;
}

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

.pricing-card.premium {
    border-color: var(--primary-color);
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
}

.badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary-color);
    color: white;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: bold;
}

.pricing-card h3 {
    font-size: 24px;
    margin-top: 10px;
    margin-bottom: 15px;
}

.price {
    font-size: 42px;
    color: var(--primary-color);
    font-weight: bold;
    margin-bottom: 10px;
}

.price-features {
    list-style: none;
    margin: 30px 0;
}

.price-features li {
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-color);
}

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

.pricing-card .btn {
    width: 100%;
    text-align: center;
    margin-top: 30px;
}

/* ================================
   FAQ SECTION
   ================================ */
.faq {
    padding: 80px 0;
    background-color: var(--bg-light);
}

.faq-list {
    max-width: 700px;
    margin: 0 auto;
}

.faq-item {
    margin-bottom: 15px;
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.faq-question {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 20px;
    cursor: pointer;
    background: white;
    border: none;
    width: 100%;
    text-align: left;
    transition: all 0.3s;
}

.faq-question:hover {
    background-color: var(--bg-light);
}

.faq-question span:first-child {
    font-size: 20px;
}

.faq-question h4 {
    margin: 0;
    flex: 1;
    font-size: 16px;
}

.arrow {
    transition: transform 0.3s;
    font-size: 12px;
}

.faq-item.open .arrow {
    transform: rotate(180deg);
}

.faq-answer {
    display: none;
    padding: 20px;
    background: var(--bg-light);
    border-top: 1px solid var(--border-color);
    color: var(--text-light);
}

.faq-item.open .faq-answer {
    display: block;
}

/* ================================
   CTA SECTION
   ================================ */
.cta {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 80px 0;
    text-align: center;
}

.cta h2 {
    font-size: 42px;
    margin-bottom: 20px;
}

.cta p {
    font-size: 18px;
    margin-bottom: 30px;
    opacity: 0.95;
}

/* ================================
   FOOTER
   ================================ */
.footer {
    background-color: #1F2937;
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h4 {
    font-size: 18px;
    margin-bottom: 15px;
}

.footer-section p {
    color: #9CA3AF;
    margin-bottom: 10px;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 10px;
}

.footer-section a {
    color: #9CA3AF;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-section a:hover {
    color: white;
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-icon {
    display: inline-block;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    text-align: center;
    line-height: 40px;
    text-decoration: none;
    transition: all 0.3s;
}

.social-icon:hover {
    background: var(--primary-color);
    transform: scale(1.1);
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: #9CA3AF;
}

/* ================================
   MODAL
   ================================ */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
}

.modal-content {
    background-color: white;
    margin: 5% auto;
    padding: 30px;
    border-radius: 12px;
    max-width: 500px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.close {
    color: var(--text-light);
    float: right;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
}

.close:hover {
    color: var(--text-color);
}

.modal-content h2 {
    margin-bottom: 30px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--text-color);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 10px 15px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-family: inherit;
    font-size: 16px;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* ================================
   RESPONSIVE DESIGN
   ================================ */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .hero .container {
        grid-template-columns: 1fr;
    }

    .hero-content h1 {
        font-size: 32px;
    }

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

    .hero-image {
        display: none;
    }

    .features h2,
    .benefits h2,
    .screenshots h2,
    .pricing h2,
    .faq h2,
    .cta h2 {
        font-size: 32px;
    }

    .features-grid,
    .benefits-list,
    .screenshots-grid,
    .pricing-grid {
        grid-template-columns: 1fr;
    }

    .pricing-card {
        padding: 30px 20px;
    }

    .cta {
        padding: 50px 0;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .modal-content {
        margin: 50% 5%;
        padding: 20px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .hero-content h1 {
        font-size: 24px;
    }

    .hero-content p {
        font-size: 16px;
    }

    .btn {
        padding: 10px 20px;
        font-size: 14px;
    }

    .features h2,
    .benefits h2,
    .screenshots h2,
    .pricing h2,
    .faq h2,
    .cta h2 {
        font-size: 24px;
        margin-bottom: 30px;
    }

    .price {
        font-size: 32px;
    }
}