:root {
    --primary-color: #1A2235;
    --secondary-color: #2A3447;
    --accent-color: #3E7BFA;
    --text-primary: #FFFFFF;
    --text-secondary: #A0A7B5;
    --text-disabled: #6B7280;
}

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

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.7;
    background-color: var(--primary-color);
    color: var(--text-primary);
    overflow-x: hidden;
}

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

h1, h2, h3 {
    color: var(--text-primary);
    line-height: 1.3;
}

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

a:hover {
    color: #6366f1;
}

.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 8px;
    font-weight: 600;
    transition: all 0.3s ease;
    text-align: center;
}

.btn-primary {
    background: var(--accent-color) !important;
    color: white;
    box-shadow: 0 4px 15px rgba(79, 70, 229, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(79, 70, 229, 0.4);
}

.btn-secondary {
    background: white;
    color: var(--accent-color);
    border: 1px solid #e5e7eb;
}

.btn-secondary:hover {
    background: #f3f4f6;
}

section {
    padding: 80px 0;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(42, 52, 71, 0.9) !important;
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 15px 0;
    transition: all 0.3s ease;
    border-bottom: 1px solid transparent;
}

.navbar.scrolled {
    background: rgba(42, 52, 71, 0.98) !important;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
    border-bottom: 1px solid #e5e7eb;
}

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

.logo {
    font-size: 26px;
    font-weight: 700;
    color: var(--text-primary) !important;
    display: flex;
    align-items: center;
}

.logo img {
    height: 35px;
    margin-right: 10px;
}

.logo:hover {
    opacity: 0.9;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 35px;
    align-items: center;
}

.nav-links a {
    color: var(--text-disabled) !important;
    font-weight: 500;
    transition: color 0.3s ease;
}

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

.nav-links a.cta-button {
    background: var(--accent-color);
    color: var(--text-primary) !important;
    padding: 10px 20px;
    border-radius: 6px;
}

.nav-links a.cta-button:hover {
    opacity: 0.9;
    color: var(--text-primary) !important;
}

.mobile-menu-button {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--text-primary);
}

/* Hero */
.hero {
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
    color: white;
    text-align: center;
    padding-top: 140px;
    padding-bottom: 100px;
    position: relative;
    overflow: hidden;
}

.hero::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100px;
    background: linear-gradient(to top, var(--primary-color), transparent);
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero h1 {
    font-size: 3.8rem;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.2;
    color: white !important;
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: 35px;
    opacity: 0.9;
    max-width: 650px;
    margin-left: auto;
    margin-right: auto;
    color: rgba(255, 255, 255, 0.9) !important;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-bottom: 60px;
}

/* Slider */
.hero-image-slider {
    margin-top: 50px;
    max-width: 350px;
    height: 700px;
    margin-left: auto;
    margin-right: auto;
    overflow: hidden;
    position: relative;
    border-radius: 25px;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
    border: 8px solid #111;
    background: #111;
}

.slides {
    display: flex;
    width: 1000%;
    height: 100%;
    transition: transform 0.5s ease-in-out;
}

.slide {
    width: 10%;
    height: 100%;
    flex-shrink: 0;
}

.slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.slider-dots {
    position: absolute;
    bottom: 15px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 8px;
    z-index: 5;
}

.dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.dot.active {
    background-color: rgba(255, 255, 255, 1);
}

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

.section-header h2 {
    font-size: 2.8rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--text-primary) !important;
}

.section-header p {
    font-size: 1.125rem;
    color: var(--text-secondary) !important;
    max-width: 600px;
    margin: 0 auto;
}

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

.feature-card {
    background: var(--secondary-color);
    padding: 35px;
    border-radius: 12px;
    box-shadow: 0 4px 25px rgba(0, 0, 0, 0.07);
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid var(--accent-color);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: var(--accent-color);
}

.feature-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--text-primary) !important;
}

.feature-card p {
    color: var(--text-secondary) !important;
}

/* How it Works */
.how-it-works {
    background: var(--primary-color);
}

.steps-container {
    display: flex;
    justify-content: space-between;
    gap: 40px;
    margin-top: 50px;
    flex-wrap: wrap;
}

.step {
    flex-basis: calc(33.333% - 40px);
    text-align: center;
}

.step-number {
    display: inline-block;
    width: 50px;
    height: 50px;
    line-height: 50px;
    border-radius: 50%;
    background: #e0e7ff;
    color: var(--accent-color);
    font-weight: 700;
    font-size: 1.5rem;
    margin-bottom: 20px;
}

.step h3 {
    font-size: 1.4rem;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.step p {
    color: var(--text-secondary);
}

/* Pricing */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 60px;
    align-items: stretch;
}

.pricing-card {
    background: var(--secondary-color);
    border: 1px solid var(--accent-color);
    border-radius: 20px;
    padding: 40px 30px;
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 750px;
}

.pricing-card.popular {
    background: linear-gradient(135deg, #0099ff 0%, #0066ff 100%);
    border: none;
    transform: scale(1.05);
    z-index: 10;
}

.pricing-card.popular::before {
    content: "Önerilen";
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--accent-color);
    color: white;
    padding: 6px 15px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.pricing-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}

.pricing-card.popular:hover {
    transform: scale(1.05) translateY(-5px);
}

.pricing-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.price {
    font-size: 2.8rem;
    font-weight: 700;
    color: var(--accent-color);
    margin-bottom: 10px;
}

.price span {
    font-size: 1rem;
    color: var(--text-secondary);
    font-weight: 400;
}

/* Billing Cycle Güncellemesi */
.billing-cycle {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 25px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    min-height: 60px; /* Hizalama için */
    justify-content: center;
}

.annual-plan-highlight {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: rgba(62, 123, 250, 0.1);
    border: 1px solid var(--accent-color);
    padding: 8px 12px;
    border-radius: 10px;
    width: 100%;
    max-width: 240px;
    transition: transform 0.3s ease;
}

.pricing-card:hover .annual-plan-highlight {
    transform: scale(1.05);
}

.pricing-card.popular .annual-plan-highlight {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
}

.annual-plan-highlight .amount {
    font-weight: 700;
    color: var(--text-primary);
    font-size: 1.1rem;
}

.annual-plan-highlight .badge {
    background: #10b981;
    color: white;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 2px 6px;
    border-radius: 4px;
    text-transform: uppercase;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.features-list {
    list-style: none;
    margin-bottom: 30px;
    text-align: left;
    padding-left: 10px;
}

.features-list li {
    padding: 8px 0;
    color: var(--text-secondary);
    position: relative;
    padding-left: 25px;
}

.features-list li::before {
    content: "✓";
    color: #10b981;
    font-weight: bold;
    position: absolute;
    left: 0;
}

.features-list li.disabled {
    color: var(--text-disabled);
    text-decoration: line-through;
}

.features-list li.disabled::before {
    color: var(--text-disabled);
}

.pricing-card.popular .btn-primary {
    background: white !important;
    color: #0066ff;
}

.pricing-card.popular .price,
.pricing-card.popular h3,
.pricing-card.popular .billing-cycle,
.pricing-card.popular .features-list li {
    color: white;
}

.pricing-card.popular .features-list li::before {
    color: white;
}

/* CTA Section */
.cta-section {
    background: linear-gradient(135deg, #7c3aed 0%, #4f46e5 100%);
    color: white;
    text-align: center;
    border-radius: 15px;
    padding: 60px 40px;
    margin: 80px auto;
    max-width: 1100px;
}

.cta-section h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 15px;
}

.cta-section p {
    font-size: 1.15rem;
    margin-bottom: 30px;
    opacity: 0.9;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.download-buttons img {
    height: 50px;
    transition: transform 0.2s ease;
}

.download-buttons img:hover {
    transform: scale(1.05);
}

.download-buttons .coming-soon {
    position: relative;
    cursor: not-allowed;
    opacity: 0.7;
}

.download-buttons .coming-soon::after {
    content: "Yakında";
    position: absolute;
    top: -25px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--accent-color);
    color: white;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 0.8rem;
    white-space: nowrap;
}

.download-buttons .coming-soon:hover {
    transform: none !important;
}

/* Footer */
.footer {
    background: var(--primary-color);
    color: #d1d5db;
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: white;
}

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

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

.footer-section ul li a {
    color: var(--text-secondary);
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: var(--accent-color);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid #374151;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

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

.social-links a {
    color: var(--text-secondary);
    font-size: 1.2rem;
    transition: color 0.3s ease;
}

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

/* Animations */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* FAQ (Sıkça Sorulan Sorular) Styles */
.faq-container {
    max-width: 800px;
    margin: 0 auto;
    text-align: left;
}

.faq-category {
    margin-bottom: 50px;
}

.faq-category h3 {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--secondary-color);
}

.faq-item {
    background: var(--secondary-color);
    border-radius: 12px;
    margin-bottom: 15px;
    overflow: hidden;
    border: 1px solid transparent;
    transition: all 0.3s ease;
}

.faq-item:hover {
    border-color: rgba(62, 123, 250, 0.3);
}

.faq-item[open] {
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
    border-color: var(--accent-color);
}

.faq-question {
    padding: 20px 25px;
    cursor: pointer;
    font-weight: 600;
    color: var(--text-primary);
    list-style: none; /* Varsayılan üçgeni kaldır */
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 1.05rem;
}

/* Webkit tarayıcılar için varsayılan oku gizle */
.faq-question::-webkit-details-marker {
    display: none;
}

.faq-question .icon {
    font-size: 0.9rem;
    color: var(--accent-color);
    transition: transform 0.3s ease;
    background: rgba(62, 123, 250, 0.1);
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

.faq-item[open] .faq-question .icon {
    transform: rotate(45deg);
    background: var(--accent-color);
    color: white;
}

.faq-answer {
    padding: 0 25px 25px 25px;
    color: var(--text-secondary);
    line-height: 1.7;
    border-top: 1px solid rgba(255,255,255,0.05);
    animation: slideDown 0.3s ease-out;
}

.faq-answer p {
    margin-bottom: 0;
}

.faq-answer a {
    color: var(--accent-color);
    text-decoration: underline;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive */
@media (max-width: 992px) {
    .hero h1 {
        font-size: 3rem;
    }

    .section-header h2 {
        font-size: 2.5rem;
    }

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

    .pricing-card {
        min-height: auto;
    }

    .pricing-card.popular {
        transform: none;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--secondary-color);
        padding: 20px;
        flex-direction: column;
        gap: 15px;
        border-top: 1px solid rgba(255, 255, 255, 0.1);
    }

    .nav-links.active {
        display: flex;
    }

    .nav-links li {
        width: 100%;
        text-align: center;
    }

    .nav-links a {
        display: block;
        padding: 10px;
    }

    .nav-links a.cta-button {
        margin-top: 10px;
        width: 100%;
    }

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

    .hero h1 {
        font-size: 2.5rem;
    }

    .hero p {
        font-size: 1.1rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
        gap: 15px;
    }

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

    .step {
        flex-basis: 100%;
        margin-bottom: 30px;
    }

    .cta-section h2 {
        font-size: 2rem;
    }

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

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

    .hero-image-slider {
        max-width: 300px;
        height: 600px;
        border-width: 6px;
    }
}