/* ============================================
ROOT VARIABLES (Premium Light Theme)
============================================ */
:root {
    --color-primary: #6366F1; /* Modern Indigo */
    --color-primary-dark: #4F46E5;
    --color-accent: #EC4899; /* Energetic Pink */
    
    --color-bg: #FFFFFF;
    --color-bg-light: #F9FAFB; /* Light section background */
    --color-border: #E5E7EB;
    
    --color-text-dark: #1F2937;
    --color-text-light: #4B5563;
    --color-text-muted: #6B7280;
    --color-text-white: #FFFFFF;

    --font-heading: 'Manrope', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);

    --border-radius-md: 8px;
    --border-radius-lg: 12px;
    --border-radius-xl: 16px;
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    background-color: var(--color-bg);
    color: var(--color-text-light);
    font-family: var(--font-body);
    line-height: 1.6;
    font-weight: 400;
}

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

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

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

a:hover {
    color: var(--color-primary-dark);
}

h1, h2, h3, h4, h5, h6 {
    color: var(--color-text-dark);
    font-family: var(--font-heading);
    font-weight: 800;
    line-height: 1.3;
}

/* ============================================
UTILITY CLASSES
============================================ */
.section {
    padding: 100px 0;
}
.section.bg-light {
    background-color: var(--color-bg-light);
}

.section-title {
    font-size: 2.75rem;
    text-align: center;
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: 1.15rem;
    text-align: center;
    max-width: 650px;
    margin: 0 auto 64px auto;
    color: var(--color-text-muted);
}

.text-gradient {
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-fill-color: transparent;
}

/* ============================================
BUTTONS
============================================ */
.btn {
    display: inline-block;
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 1rem;
    padding: 14px 32px;
    border-radius: 50px;
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
}

.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-text-white);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    background-color: var(--color-primary-dark);
    color: var(--color-text-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background-color: var(--color-bg);
    color: var(--color-text-dark);
    border-color: var(--color-border);
    box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
    background-color: var(--color-bg-light);
    border-color: #D1D5DB;
    color: var(--color-text-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-large {
    font-size: 1.1rem;
    padding: 16px 36px;
}

.btn-full {
    width: 100%;
}

/* ============================================
HEADER
============================================ */
.header {
    position: sticky;
    top: 0;
    width: 100%;
    z-index: 1000;
    padding: 20px 0;
    background-color: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
}

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

.logo-link {
    display: flex;
    align-items: center;
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--color-text-dark);
    font-family: var(--font-heading);
}

.logo-link:hover {
    color: var(--color-text-dark);
}

.logo-img {
    width: 40px;
    height: 40px;
    margin-right: 12px;
    border-radius: 50%;
}

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

.nav-link {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text-light);
}

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

.mobile-nav-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--color-text-dark);
    cursor: pointer;
}

/* ============================================
MOBILE NAVIGATION
============================================ */
.mobile-nav-menu {
    display: none;
    position: fixed;
    top: 77px; /* Height of header */
    left: 0;
    width: 100%;
    height: calc(100vh - 77px);
    background: var(--color-bg);
    z-index: 999;
    flex-direction: column;
    align-items: center;
    padding-top: 40px;
    gap: 24px;
    transform: translateX(100%);
    transition: transform 0.3s ease-in-out;
}

.mobile-nav-menu.open {
    transform: translateX(0);
}

.mobile-nav-menu a {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--color-text-dark);
    padding: 10px 20px;
}

.mobile-nav-menu .btn {
    width: 90%;
    max-width: 300px;
    margin-top: 20px;
}

/* ============================================
MODAL / POPUP STYLES (YEN力 EKLEND力)
============================================ */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(31, 41, 55, 0.7); /* color-text-dark with 70% opacity */
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    opacity: 0;
    animation: fadeIn 0.3s ease-out forwards;
}

.modal-content {
    background-color: var(--color-bg);
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-xl);
    width: 90%;
    max-width: 450px;
    padding: 32px;
    text-align: center;
    position: relative;
    opacity: 0;
    transform: scale(0.95) translateY(20px);
    animation: scaleInModal 0.3s 0.1s ease-out forwards;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes scaleInModal {
    from { opacity: 0; transform: scale(0.95) translateY(20px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}

.modal-close-btn {
    position: absolute;
    top: 16px;
    right: 16px;
    background: none;
    border: none;
    font-size: 1.75rem;
    color: var(--color-text-muted);
    cursor: pointer;
    transition: var(--transition);
}

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

.modal-logo {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    margin-bottom: 20px;
}

.modal-title {
    font-size: 1.75rem;
    margin-bottom: 12px;
}

.modal-text {
    font-size: 1rem;
    color: var(--color-text-light);
    margin-bottom: 24px;
}

.modal-countdown {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 24px;
}

/* ============================================
HERO SECTION
============================================ */
.hero {
    padding: 120px 0 160px;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #F9FAFB 0%, #F0F2FF 100%);
}

.hero-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 64px;
}

.hero-content {
    flex: 1;
    max-width: 600px;
}

.hero-title {
    font-size: 4.25rem;
    margin-bottom: 24px;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 40px;
}

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

/* --- Hero Visual --- */
.hero-visual {
    flex: 1;
    max-width: 500px;
    position: relative;
    transform: rotate(3deg);
}

.hero-card {
    background: var(--color-bg);
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-xl);
    padding: 20px;
}

.post-card {
    position: relative;
    z-index: 2;
}
.post-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}
.post-profile-pic {
    width: 40px;
    height: 40px;
    border-radius: 50%;
}
.post-image-placeholder {
    width: 100%;
    padding-bottom: 100%; /* 1:1 Aspect Ratio */
    background: linear-gradient(135deg, #F0F2FF, #E0E7FF);
    border-radius: var(--border-radius-lg);
    margin-bottom: 16px;
}
.post-actions {
    font-size: 1.5rem;
    display: flex;
    gap: 16px;
    margin-bottom: 12px;
}
.post-likes {
    font-size: 0.9rem;
    font-weight: 500;
}

.like-notification-card {
    position: absolute;
    bottom: -40px;
    left: -60px;
    z-index: 3;
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 20px;
    animation: float 4s ease-in-out infinite;
}

.notification-icon {
    font-size: 1.5rem;
    color: var(--color-accent);
}
.notification-text strong {
    color: var(--color-text-dark);
}

/* --- Hero Animations --- */
.hero-content .animate-in {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.8s ease-out forwards;
}
.hero-title.animate-in { animation-delay: 0.2s; }
.hero-subtitle.animate-in { animation-delay: 0.4s; }
.hero-actions.animate-in { animation-delay: 0.6s; }

.hero-visual.animate-in {
    opacity: 0;
    transform: scale(0.9) rotate(3deg);
    animation: scaleIn 1s ease-out forwards;
    animation-delay: 0.5s;
}

.like-icon-anim {
    color: var(--color-accent);
    animation: pulse 1.5s infinite;
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes scaleIn {
    from { opacity: 0; transform: scale(0.9) rotate(3deg); }
    to { opacity: 1; transform: scale(1) rotate(3deg); }
}
@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.2); }
    100% { transform: scale(1); }
}
@keyframes float {
    0% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
    100% { transform: translateY(0); }
}

/* ============================================
TRUST BAR
============================================ */
.trust-bar {
    padding: 24px 0;
    background-color: var(--color-bg-light);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}
.trust-bar p {
    text-align: center;
    font-weight: 600;
    color: var(--color-text-muted);
}

/* ============================================
HOW IT WORKS SECTION
============================================ */
.steps-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    position: relative;
}

/* Dashed line connector */
.steps-container::before {
    content: '';
    position: absolute;
    top: 50px;
    left: 16.66%;
    right: 16.66%;
    height: 2px;
    background-image: linear-gradient(to right, var(--color-border) 50%, transparent 50%);
    background-size: 20px 100%;
    z-index: 1;
}

.step-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-xl);
    padding: 32px;
    text-align: center;
    z-index: 2;
}

.step-icon-wrapper {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: linear-gradient(135deg, #F0F2FF, #E0E7FF);
    color: var(--color-primary);
    display: grid;
    place-items: center;
    font-size: 2rem;
    margin: 0 auto 24px auto;
    border: 4px solid var(--color-bg);
    box-shadow: 0 0 0 1px var(--color-border);
}
.step-card h3 {
    font-size: 1.4rem;
    margin-bottom: 12px;
}

/* ============================================
FEATURES SECTION
============================================ */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}
.feature-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    padding: 32px;
    display: flex;
    gap: 24px;
    align-items: flex-start;
    transition: var(--transition);
}
.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}
.feature-icon {
    font-size: 1.5rem;
    color: var(--color-primary);
    padding-top: 5px;
}
.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 8px;
}

/* ============================================
PRICING SECTION
============================================ */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    align-items: stretch;
}
.pricing-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-xl);
    padding: 40px;
    display: flex;
    flex-direction: column;
    transition: var(--transition);
}
.pricing-card:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-8px);
}

.pricing-card.popular {
    border: 2px solid var(--color-primary);
    position: relative;
}
.popular-badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    color: var(--color-text-white);
    padding: 6px 16px;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 600;
}
.pricing-header {
    text-align: center;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--color-border);
}
.pricing-header h3 {
    font-size: 1.5rem;
    margin-bottom: 8px;
}
.pricing-header p {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}
.price {
    font-size: 2.75rem;
    font-weight: 800;
    font-family: var(--font-heading);
    color: var(--color-text-dark);
    margin-top: 24px;
}
.price-per {
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-text-muted);
    margin-left: 4px;
}
.pricing-features {
    list-style: none;
    margin: 32px 0;
    flex-grow: 1;
}
.pricing-features li {
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 12px;
}
.pricing-features li i {
    color: var(--color-primary);
    font-size: 1.1rem;
}
.pricing-card .btn {
    margin-top: auto;
}

/* ============================================
TESTIMONIALS SECTION
============================================ */
.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}
.testimonial-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    padding: 32px;
    display: flex;
    flex-direction: column;
}
.testimonial-text {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--color-text-dark);
    margin-bottom: 24px;
    flex-grow: 1;
}
.testimonial-author {
    display: flex;
    align-items: center;
    gap: 16px;
}
.testimonial-author img {
    width: 50px;
    height: 50px;
    border-radius: 50%;
}
.testimonial-author h4 {
    font-size: 1.1rem;
    font-weight: 700;
    margin: 0;
}
.testimonial-author span {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

/* ============================================
FAQ SECTION
============================================ */
.faq-container {
    max-width: 800px;
    margin: 0 auto;
}
.faq-accordion {
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.faq-item {
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
}
.faq-question {
    padding: 20px 24px;
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--color-text-dark);
    cursor: pointer;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}
.faq-question::-webkit-details-marker {
    display: none;
}
.faq-question:hover {
    color: var(--color-primary);
}
.faq-answer {
    padding: 0 24px 24px 24px;
    font-size: 1rem;
    border-top: 1px solid var(--color-border);
    margin: 0 24px;
    padding-top: 20px;
}
.faq-icon {
    font-size: 1rem;
    color: var(--color-primary);
    transition: transform 0.2s ease-in-out;
}
.faq-item[open] .faq-icon {
    transform: rotate(45deg);
}

/* ============================================
FINAL CTA SECTION
============================================ */
.cta-section {
    padding: 0;
}
.cta-content {
    padding: 80px 64px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-primary-dark));
    border-radius: var(--border-radius-xl);
    text-align: center;
    color: var(--color-text-white);
}
.cta-title {
    font-size: 2.5rem;
    color: var(--color-text-white);
    margin-bottom: 16px;
}
.cta-content p {
    font-size: 1.15rem;
    color: rgba(255, 255, 255, 0.9);
    max-width: 600px;
    margin: 0 auto 32px auto;
}
.cta-button {
    background-color: var(--color-bg);
    color: var(--color-primary-dark);
    font-weight: 700;
    box-shadow: var(--shadow-lg);
}
.cta-button:hover {
    background-color: var(--color-bg-light);
    color: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

/* ============================================
FOOTER
============================================ */
.footer {
    padding: 64px 0;
    background-color: var(--color-bg-light);
    border-top: 1px solid var(--color-border);
    margin-top: 100px;
}
.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.footer-info {
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.footer-info p {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}
.footer-links {
    display: flex;
    gap: 24px;
}
.footer-links a {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-text-light);
}
.footer-links a:hover {
    color: var(--color-primary);
}

/* ============================================
SCROLL ANIMATIONS
============================================ */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}
.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}
/* Staggered delays */
.step-card.animate-on-scroll:nth-child(2) { transition-delay: 0.1s; }
.step-card.animate-on-scroll:nth-child(3) { transition-delay: 0.2s; }
.feature-card.animate-on-scroll:nth-child(2) { transition-delay: 0.1s; }
.feature-card.animate-on-scroll:nth-child(3) { transition-delay: 0.2s; }
.feature-card.animate-on-scroll:nth-child(4) { transition-delay: 0.3s; }
.pricing-card.animate-on-scroll:nth-child(2) { transition-delay: 0.1s; }
.pricing-card.animate-on-scroll:nth-child(3) { transition-delay: 0.2s; }
.testimonial-card.animate-on-scroll:nth-child(2) { transition-delay: 0.1s; }
.testimonial-card.animate-on-scroll:nth-child(3) { transition-delay: 0.2s; }

/* ============================================
RESPONSIVE DESIGN
============================================ */

/* --- Tablet (992px) --- */
@media (max-width: 992px) {
    .section-title { font-size: 2.5rem; }
    .hero-title { font-size: 3.5rem; }
    
    .hero-container {
        flex-direction: column;
        text-align: center;
    }
    .hero-content { max-width: 100%; }
    .hero-actions { justify-content: center; }
    .hero-visual { max-width: 400px; transform: rotate(0); margin-top: 64px; }
    .like-notification-card { left: -30px; }

    .nav-links, .header .btn-primary {
        display: none;
    }
    .mobile-nav-toggle {
        display: block;
    }

    .steps-container { grid-template-columns: 1fr; gap: 40px; }
    .steps-container::before { display: none; }
    .step-card { max-width: 450px; margin: 0 auto; }
    
    .feature-grid { grid-template-columns: 1fr; }
    .pricing-grid { grid-template-columns: 1fr; max-width: 500px; margin: 0 auto; }
    .testimonial-grid { grid-template-columns: 1fr; }
}

/* --- Mobile (768px) --- */
@media (max-width: 768px) {
    .section { padding: 80px 0; }
    .section-title { font-size: 2rem; }
    .section-subtitle { margin-bottom: 48px; }
    
    .hero { padding: 80px 0; }
    .hero-title { font-size: 2.5rem; }
    .hero-subtitle { font-size: 1.1rem; }
    .hero-actions { flex-direction: column; }
    .hero-visual { display: none; } /* Hide complex visual on small screens */

    .footer-content {
        flex-direction: column;
        gap: 32px;
        text-align: center;
    }
    .footer-info { align-items: center; }
    
    .modal-content {
        padding: 24px;
    }
    .modal-title {
        font-size: 1.5rem;
    }
}

/* ============================================
RTL (SAĞDAN SOLA) DÜZENLEMELERİ
============================================ */
html[dir="rtl"] {
    /* Varsayılan metin hizalamasını sağa yap */
    text-align: right;
}

/* Header */
html[dir="rtl"] .logo-img {
    margin-right: 0;
    margin-left: 12px;
}

/* Mobil Menü */
html[dir="rtl"] .mobile-nav-menu {
    left: auto;
    right: 0;
    transform: translateX(-100%);
}
html[dir="rtl"] .mobile-nav-menu.open {
    transform: translateX(0);
}

/* Modal */
html[dir="rtl"] .modal-close-btn {
    right: auto;
    left: 16px;
}

/* Hero */
html[dir="rtl"] .hero-visual {
    transform: rotate(-3deg);
}
html[dir="rtl"] .like-notification-card {
    left: auto;
    right: -60px;
}
html[dir="rtl"] .post-actions .fa-bookmark {
    margin-left: auto; /* LTR'de sağda, RTL'de solda kalması için */
}

/* Pricing */
html[dir="rtl"] .price-per {
    margin-left: 0;
    margin-right: 4px;
}

/* CTA (Gradient yönünü tersine çevir) */
html[dir="rtl"] .cta-content {
    background: linear-gradient(-90deg, var(--color-primary), var(--color-primary-dark));
}

/* Responsive Düzeltmeler */
@media (max-width: 992px) {
    html[dir="rtl"] .hero-visual {
        transform: rotate(0);
    }
    html[dir="rtl"] .like-notification-card {
        left: auto;
        right: -30px;
    }
}