:root {
    --primary-color: #6366f1;
    --secondary-color: #8b5cf6;
    --accent-color: #06b6d4;
    --dark-bg: #0f172a;
    --card-bg: rgba(255, 255, 255, 0.05); /* Daha transparan ve açık */
    --text-color: #f8fafc;
    --text-muted: #94a3b8;
    --gradient: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --glass-border: 1px solid rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
}

/* Page Transition Overlay */
body {
    opacity: 0; /* Start hidden */
    transition: opacity 0.5s ease-in-out; /* Smooth transition */
}

body.loaded {
    opacity: 1; /* Fade in */
}

/* Liquid Glass Effect Class */
.glass-panel {
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: var(--glass-border);
    border-radius: 16px;
    box-shadow: var(--glass-shadow);
}

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

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

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

@keyframes liquid-flow {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Feature Cards & Pricing Cards Update */
.feature-card, .pricing-card, .auth-box, .navbar {
    background: rgba(30, 41, 59, 0.4) !important;
    backdrop-filter: blur(16px) !important;
    -webkit-backdrop-filter: blur(16px) !important;
    border: 1px solid rgba(255, 255, 255, 0.08) !important;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1) !important;
}

.feature-card:hover, .pricing-card:hover {
    background: rgba(30, 41, 59, 0.6) !important;
    border-color: rgba(99, 102, 241, 0.4) !important;
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4) !important;
}

/* Navbar Glass */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    padding: 15px 0;
    background: rgba(15, 23, 42, 0.6) !important; /* Biraz daha koyu glass */
}

/* 3D Canvas Background */
#canvas-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: radial-gradient(circle at center, #1e1b4b 0%, #0f172a 100%);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--dark-bg); 
}

::-webkit-scrollbar-thumb {
    background: #334155; 
    border-radius: 5px;
    border: 2px solid var(--dark-bg);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color); 
}

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

ul {
    list-style: none;
}

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

/* Typography */
h1, h2, h3, h4 {
    font-weight: 700;
    line-height: 1.2;
}

.gradient-text {
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-size: 1rem;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--gradient);
    color: white;
    border: none;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.5);
}

.btn-secondary {
    background: transparent;
    color: var(--text-color);
    border: none;
}

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

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

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

.btn-lg {
    padding: 15px 40px;
    font-size: 1.1rem;
}

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

/* Navbar */
.navbar {
    padding: 20px 0;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    transition: all 0.3s ease;
}

.navbar.scrolled {
    padding: 15px 0;
    background: rgba(15, 23, 42, 0.95);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: white;
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo i {
    color: var(--primary-color);
    animation: pulse-logo 2s infinite;
}

@keyframes pulse-logo {
    0% { transform: scale(1); filter: drop-shadow(0 0 0 rgba(99, 102, 241, 0)); }
    50% { transform: scale(1.1); filter: drop-shadow(0 0 10px rgba(99, 102, 241, 0.5)); }
    100% { transform: scale(1); filter: drop-shadow(0 0 0 rgba(99, 102, 241, 0)); }
}

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

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

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

.nav-links a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background-color: var(--primary-color);
    transition: width 0.3s ease;
}

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 15px;
}

.mobile-menu-btn {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-color);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 100px;
    position: relative;
    overflow: hidden;
}

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

.badge {
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary-color);
    padding: 8px 16px;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 600;
    display: inline-block;
    margin-bottom: 20px;
    border: 1px solid rgba(99, 102, 241, 0.2);
    backdrop-filter: blur(5px);
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    line-height: 1.1;
    text-shadow: 0 0 30px rgba(99, 102, 241, 0.3);
}

.hero p {
    color: var(--text-muted);
    font-size: 1.2rem;
    margin-bottom: 30px;
    max-width: 90%;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    margin-bottom: 50px;
}

.stats {
    display: flex;
    gap: 40px;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-muted);
    font-weight: 500;
    transition: var(--transition);
}

.stat-item:hover {
    color: var(--text-color);
    transform: translateY(-3px);
}

.stat-item i {
    color: var(--accent-color);
}

.hero-image {
    position: relative;
    perspective: 1000px;
}

.floating-img {
    width: 100%;
    border-radius: 20px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
    animation: float 6s ease-in-out infinite;
    position: relative;
    z-index: 2;
    transform-style: preserve-3d;
}

.glow-effect {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 120%;
    height: 120%;
    background: var(--gradient);
    filter: blur(80px);
    opacity: 0.3;
    z-index: 1;
    border-radius: 50%;
    animation: pulse-glow 4s infinite alternate;
}

@keyframes pulse-glow {
    0% { opacity: 0.2; transform: translate(-50%, -50%) scale(0.9); }
    100% { opacity: 0.4; transform: translate(-50%, -50%) scale(1.1); }
}

@keyframes float {
    0% { transform: translateY(0) rotateX(2deg) rotateY(-2deg); }
    50% { transform: translateY(-20px) rotateX(-2deg) rotateY(2deg); }
    100% { transform: translateY(0) rotateX(2deg) rotateY(-2deg); }
}

/* Features Section */
.features {
    padding: 100px 0;
    position: relative;
}

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

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

.section-header p {
    color: var(--text-muted);
    font-size: 1.1rem;
}

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

.feature-card {
    background: var(--card-bg);
    padding: 30px;
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition);
    backdrop-filter: blur(10px);
    transform-style: preserve-3d;
}

.feature-card:hover {
    transform: translateY(-10px) rotateX(5deg);
    border-color: var(--primary-color);
    box-shadow: 0 15px 30px rgba(99, 102, 241, 0.15);
}

.icon-box {
    width: 60px;
    height: 60px;
    background: rgba(99, 102, 241, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 20px;
    transition: var(--transition);
}

.feature-card:hover .icon-box {
    background: var(--primary-color);
    color: white;
    transform: scale(1.1) translateZ(20px);
}

.feature-card h3 {
    margin-bottom: 10px;
    font-size: 1.3rem;
    transition: var(--transition);
}

.feature-card:hover h3 {
    color: var(--primary-color);
}

.feature-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* Pricing Section */
.pricing {
    padding: 100px 0;
}

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

.pricing-card {
    background: var(--card-bg);
    padding: 40px;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    position: relative;
    transition: var(--transition);
    backdrop-filter: blur(10px);
    transform-style: preserve-3d;
}

.pricing-card:hover {
    transform: translateY(-15px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    border-color: rgba(99, 102, 241, 0.3);
}

.pricing-card.popular {
    background: linear-gradient(145deg, rgba(30, 41, 59, 0.9), rgba(38, 51, 77, 0.9));
    border: 2px solid var(--primary-color);
    transform: scale(1.05);
    z-index: 10;
    box-shadow: 0 20px 50px rgba(99, 102, 241, 0.2);
}

.pricing-card.popular:hover {
    transform: scale(1.08) translateY(-10px);
}

.popular-badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient);
    padding: 8px 20px;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 600;
    box-shadow: 0 5px 15px rgba(99, 102, 241, 0.4);
}

.card-header {
    text-align: center;
    margin-bottom: 30px;
    padding-bottom: 30px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.card-header h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
}

.price {
    font-size: 3rem;
    font-weight: 800;
    color: var(--text-color);
    text-shadow: 0 0 20px rgba(255, 255, 255, 0.1);
}

.price span {
    font-size: 1rem;
    color: var(--text-muted);
    font-weight: 500;
}

.features-list {
    margin-bottom: 30px;
}

.features-list li {
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-muted);
}

.features-list li i {
    color: var(--accent-color);
}

/* Footer */
footer {
    background: rgba(11, 17, 32, 0.9);
    padding: 80px 0 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 60px;
}

.footer-brand p {
    color: var(--text-muted);
    margin-top: 20px;
    max-width: 300px;
}

.footer-links h4, .footer-social h4 {
    margin-bottom: 25px;
    font-size: 1.1rem;
}

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

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

.footer-links a:hover {
    color: var(--primary-color);
    padding-left: 5px;
}

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

.social-icons a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.05);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: var(--transition);
}

.social-icons a:hover {
    background: var(--primary-color);
    color: white;
    transform: rotate(360deg);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Animation Utilities */
.hidden {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease-out;
}

.show {
    opacity: 1;
    transform: translateY(0);
}

.stagger-1 { transition-delay: 100ms; }
.stagger-2 { transition-delay: 200ms; }
.stagger-3 { transition-delay: 300ms; }
.stagger-4 { transition-delay: 400ms; }

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

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

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

    .stats {
        justify-content: center;
    }

    .pricing-card.popular {
        transform: scale(1);
    }
    
    .pricing-card.popular:hover {
        transform: scale(1.02);
    }

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

@media (max-width: 768px) {
    .nav-links, .nav-actions {
        display: none;
    }

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

    .nav-links.active, .nav-actions.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        left: 0;
        width: 100%;
        background: rgba(15, 23, 42, 0.95);
        backdrop-filter: blur(10px);
        padding: 20px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        animation: slideDown 0.3s ease-out;
    }

    .nav-links.active {
        top: 70px;
        align-items: center;
        gap: 20px;
    }

    .nav-actions.active {
        top: 280px; /* Adjust based on nav-links height */
        align-items: center;
        padding-top: 0;
    }

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

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

    .footer-brand p {
        margin: 20px auto;
    }

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