/* ===== Variables ===== */
:root {
    --primary-color: #607D8B;
    --primary-dark: #455A64;
    --secondary-color: #00695C;
    --success-color: #4CAF50;
    --danger-color: #F44336;
    --warning-color: #FF9800;
    --text-color: #333;
    --text-light: #666;
    --text-muted: #999;
    --bg-light: #f8f9fa;
    --bg-dark: #1a1a2e;
    --white: #ffffff;
    --shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.15);
    --transition: all 0.3s ease;
    --border-radius: 16px;
    --border-radius-sm: 8px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', sans-serif;
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
}

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

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

ul {
    list-style: none;
}

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

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.25rem, 2vw, 1.5rem); }

.highlight {
    color: var(--secondary-color);
}

.text-light-emphasis {
    color: rgba(255, 255, 255, 0.7);
    font-weight: 300;
}

/* ===== Navbar ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 15px 0;
    transition: var(--transition);
}

.navbar.scrolled {
    background: var(--white);
    box-shadow: var(--shadow);
    padding: 10px 0;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    color: var(--white);
    transition: var(--transition);
}

.logo-img {
    height: 45px;
    width: auto;
    transition: var(--transition);
}

.logo-text {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--white);
}

.navbar.scrolled .logo {
    color: var(--primary-dark);
}

.navbar.scrolled .logo-text {
    color: var(--primary-dark);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav-links a {
    color: var(--white);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.navbar.scrolled .nav-links a {
    color: var(--text-color);
}

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

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--secondary-color);
    transition: var(--transition);
}

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

.btn-nav {
    background: var(--secondary-color) !important;
    color: var(--white) !important;
    padding: 10px 25px;
    border-radius: 50px;
}

.btn-nav:hover {
    background: var(--primary-dark) !important;
    transform: translateY(-2px);
}

.btn-nav::after {
    display: none !important;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 2rem;
    color: var(--white);
    cursor: pointer;
}

.navbar.scrolled .mobile-menu-btn {
    color: var(--text-color);
}

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

.hero-bg {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    z-index: -1;
}

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

.hero-content {
    color: var(--white);
}

.badge-text {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.15);
    padding: 8px 16px;
    border-radius: 50px;
    font-size: 0.9rem;
    margin-bottom: 20px;
}

.badge-text i {
    color: #FFD700;
}

.hero h1 {
    margin-bottom: 20px;
}

.hero-description {
    font-size: 1.1rem;
    opacity: 0.9;
    margin-bottom: 30px;
    max-width: 500px;
}

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

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

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.8;
}

.hero-buttons {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.store-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--bg-dark);
    color: var(--white);
    padding: 12px 24px;
    border-radius: var(--border-radius-sm);
    transition: var(--transition);
}

.store-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.store-btn i {
    font-size: 2rem;
}

.store-text {
    text-align: left;
}

.store-text span {
    display: block;
    font-size: 0.7rem;
    opacity: 0.8;
}

.store-text strong {
    font-size: 1.1rem;
}

.store-btn.large {
    padding: 16px 32px;
}

.store-btn.large i {
    font-size: 2.5rem;
}

.store-btn.large .store-text strong {
    font-size: 1.3rem;
}

/* Hero Image / Phone Mockup */
.hero-image {
    position: relative;
    display: flex;
    justify-content: center;
}

.phone-mockup {
    width: 280px;
    height: 560px;
    background: #1a1a1a;
    border-radius: 40px;
    padding: 10px;
    box-shadow: var(--shadow-lg);
    position: relative;
}

.phone-mockup::before {
    content: '';
    position: absolute;
    top: 15px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 25px;
    background: #000;
    border-radius: 15px;
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: var(--white);
    border-radius: 32px;
    overflow: hidden;
}

.app-preview {
    height: 100%;
    display: flex;
    flex-direction: column;
}

.app-header {
    background: var(--primary-color);
    color: var(--white);
    padding: 50px 15px 15px;
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
}

.app-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 20px;
    padding: 20px;
}

.scan-area {
    width: 150px;
    height: 150px;
    border: 3px dashed var(--primary-color);
    border-radius: var(--border-radius);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
}

.scan-area i {
    font-size: 3rem;
    margin-bottom: 10px;
}

.result-preview {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 15px 25px;
    border-radius: var(--border-radius-sm);
    font-weight: 600;
}

.result-preview.yerli {
    background: #e8f5e9;
    color: var(--success-color);
}

.result-preview i {
    font-size: 1.5rem;
}

/* Floating Cards */
.floating-card {
    position: absolute;
    background: var(--white);
    padding: 15px 20px;
    border-radius: var(--border-radius-sm);
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
    font-weight: 500;
    animation: float 3s ease-in-out infinite;
}

.floating-card.card-1 {
    top: 20%;
    right: -20px;
    animation-delay: 0s;
}

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

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

.text-success { color: var(--success-color); }
.text-primary { color: var(--primary-color); }

/* Hero Wave */
.hero-wave {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
}

.hero-wave svg {
    display: block;
    width: 100%;
}

/* ===== Section Common Styles ===== */
section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-tag {
    display: inline-block;
    background: rgba(0, 105, 92, 0.1);
    color: var(--secondary-color);
    padding: 8px 20px;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 15px;
}

.section-header p {
    color: var(--text-light);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 15px auto 0;
}

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

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.feature-card {
    background: var(--white);
    padding: 40px 30px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    text-align: center;
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--primary-color) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.feature-icon i {
    font-size: 2rem;
    color: var(--white);
}

.feature-card h3 {
    margin-bottom: 15px;
    color: var(--primary-dark);
}

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

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

.steps-container {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    gap: 20px;
    margin-bottom: 60px;
}

.step {
    text-align: center;
    max-width: 250px;
    position: relative;
}

.step-number {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 35px;
    height: 35px;
    background: var(--secondary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.9rem;
    z-index: 1;
}

.step-icon {
    width: 120px;
    height: 120px;
    background: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    box-shadow: var(--shadow);
}

.step-icon i {
    font-size: 3rem;
    color: var(--primary-color);
}

.step h3 {
    margin-bottom: 10px;
    color: var(--primary-dark);
}

.step p {
    color: var(--text-light);
    font-size: 0.95rem;
}

.step-connector {
    display: flex;
    align-items: center;
    padding-top: 50px;
    color: var(--primary-color);
    font-size: 1.5rem;
}

/* Demo Video */
.demo-video {
    max-width: 800px;
    margin: 0 auto;
}

.video-placeholder {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    border-radius: var(--border-radius);
    padding: 100px 40px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    cursor: pointer;
    transition: var(--transition);
}

.video-placeholder:hover {
    transform: scale(1.02);
}

.play-button {
    width: 80px;
    height: 80px;
    background: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow);
}

.play-button i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-left: 5px;
}

.video-placeholder span {
    color: var(--white);
    font-weight: 600;
    font-size: 1.1rem;
}

/* ===== Screenshots Section ===== */
.screenshots {
    background: var(--white);
}

.screenshots-slider {
    display: flex;
    gap: 30px;
    justify-content: center;
    flex-wrap: wrap;
}

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

.phone-frame {
    width: 200px;
    height: 400px;
    background: #1a1a1a;
    border-radius: 30px;
    padding: 8px;
    box-shadow: var(--shadow);
}

.screen-content {
    width: 100%;
    height: 100%;
    background: var(--white);
    border-radius: 24px;
    overflow: hidden;
}

.mock-header {
    background: var(--primary-color);
    color: var(--white);
    padding: 40px 10px 10px;
    text-align: center;
    font-weight: 600;
    font-size: 0.85rem;
}

.mock-body {
    padding: 20px 15px;
}

.mock-btn {
    padding: 15px;
    border-radius: var(--border-radius-sm);
    margin-bottom: 10px;
    color: var(--white);
    font-weight: 500;
    font-size: 0.8rem;
    display: flex;
    align-items: center;
    gap: 8px;
    justify-content: center;
}

.mock-btn.green { background: var(--success-color); }
.mock-btn.blue { background: var(--primary-color); }
.mock-btn.orange { background: var(--warning-color); }

.scan-overlay {
    height: 250px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: #f5f5f5;
}

.scan-frame {
    width: 120px;
    height: 120px;
    border: 3px solid var(--primary-color);
    border-radius: 10px;
    position: relative;
}

.scan-frame::before,
.scan-frame::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    border-color: var(--secondary-color);
    border-style: solid;
}

.scan-frame::before {
    top: -3px;
    left: -3px;
    border-width: 3px 0 0 3px;
    border-radius: 10px 0 0 0;
}

.scan-frame::after {
    bottom: -3px;
    right: -3px;
    border-width: 0 3px 3px 0;
    border-radius: 0 0 10px 0;
}

.scan-overlay p {
    margin-top: 15px;
    font-size: 0.75rem;
    color: var(--text-light);
}

.result-card {
    text-align: center;
    padding: 30px 15px;
}

.result-card.success {
    color: var(--success-color);
}

.result-card i {
    font-size: 3rem;
    margin-bottom: 10px;
}

.result-card h4 {
    font-size: 1rem;
    margin-bottom: 10px;
}

.result-card p {
    font-size: 0.75rem;
    color: var(--text-light);
}

.category-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.cat-item {
    background: var(--bg-light);
    padding: 15px 10px;
    border-radius: var(--border-radius-sm);
    font-size: 0.75rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 5px;
}

.cat-item i {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.screenshot-label {
    margin-top: 15px;
    font-weight: 600;
    color: var(--text-color);
}

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

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.testimonial-card {
    background: var(--white);
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.stars {
    color: #FFD700;
    margin-bottom: 15px;
}

.stars i {
    margin-right: 3px;
}

.testimonial-card > p {
    color: var(--text-light);
    font-style: italic;
    margin-bottom: 20px;
    line-height: 1.7;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 15px;
}

.author-avatar {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--primary-color) 100%);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.2rem;
}

.author-info strong {
    display: block;
    color: var(--text-color);
}

.author-info span {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* ===== Download CTA Section ===== */
.download-cta {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    text-align: center;
    color: var(--white);
}

.cta-content h2 {
    margin-bottom: 20px;
}

.cta-content h2 .highlight {
    color: #FFD700;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.cta-content > p {
    font-size: 1.1rem;
    opacity: 0.9;
    margin-bottom: 40px;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.cta-features {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
}

.cta-feature {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
}

.cta-feature i {
    color: #4CAF50;
}

/* ===== Footer ===== */
.footer {
    background: var(--bg-dark);
    color: var(--white);
    padding: 60px 0 0;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand .logo {
    margin-bottom: 15px;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 20px;
}

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

.social-links a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

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

.footer-links h4,
.footer-contact h4 {
    margin-bottom: 20px;
    font-size: 1.1rem;
}

.footer-links ul li,
.footer-contact ul li {
    margin-bottom: 12px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition);
}

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

.footer-contact ul li {
    display: flex;
    align-items: center;
    gap: 10px;
    color: rgba(255, 255, 255, 0.7);
}

.footer-contact i {
    color: var(--secondary-color);
}

.footer-bottom {
    padding: 20px 0;
    text-align: center;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.9rem;
}

/* ===== Back to Top Button ===== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--secondary-color);
    color: var(--white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
    box-shadow: var(--shadow);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--primary-dark);
    transform: translateY(-5px);
}

/* ===== Responsive Design ===== */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-content {
        order: 1;
    }

    .hero-image {
        order: 2;
    }

    .hero-description {
        margin: 0 auto 30px;
    }

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

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

    .floating-card {
        display: none;
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background: var(--white);
        flex-direction: column;
        justify-content: center;
        gap: 30px;
        transition: var(--transition);
        box-shadow: var(--shadow-lg);
    }

    .nav-links.active {
        right: 0;
    }

    .nav-links a {
        color: var(--text-color);
        font-size: 1.2rem;
    }

    .mobile-menu-btn {
        display: block;
    }

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

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

    .step-connector {
        transform: rotate(90deg);
        padding: 20px 0;
    }

    .screenshots-slider {
        gap: 20px;
    }

    .phone-frame {
        width: 160px;
        height: 320px;
    }

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

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-brand .logo {
        justify-content: center;
    }

    .social-links {
        justify-content: center;
    }

    .cta-features {
        gap: 20px;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 80px 0;
    }

    .hero-stats {
        flex-direction: column;
        gap: 20px;
    }

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

    .phone-mockup {
        width: 220px;
        height: 440px;
    }

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

    .cta-buttons .store-btn.large {
        width: 100%;
        max-width: 280px;
    }
}