/* Base Styles - Optimize edilmiş */
:root {
    --primary-color: #2563eb; /* blue-600 */
    --primary-dark: #1d4ed8; /* blue-700 */
    --primary-light: #3b82f6; /* blue-500 */
    --secondary-color: #6366f1; /* indigo-500 */
    --text-dark: #1f2937; /* gray-800 */
    --text-light: #9ca3af; /* gray-400 */
    --bg-light: #f9fafb; /* gray-50 */
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
    text-rendering: optimizeSpeed;
    -webkit-font-smoothing: antialiased;
}

/* Navigation - Transition süresini minimize et */
.nav-link {
    position: relative;
    color: var(--text-dark);
    font-weight: 500;
    transition: color 0.2s ease;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -4px;
    left: 0;
    background-color: var(--primary-color);
    transition: width 0.2s ease;
}

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

.nav-link-mobile {
    display: block;
    padding: 0.75rem 0;
    font-weight: 500;
    color: var(--text-dark);
    border-bottom: 1px solid #eee;
    transition: color 0.2s, padding-left 0.2s;
}

.nav-link-mobile:hover {
    color: var(--primary-color);
    padding-left: 0.5rem;
}

/* Scroll Header - will-change ekleyerek GPU kullanımı iyileştiriliyor */
#header {
    will-change: transform, opacity;
    height: 60px; /* Sabit yükseklik */
    display: flex;
    align-items: center;
}

/* Feature Cards - transform özelliği hafifletildi */
.feature-card {
    background-color: white;
    border-radius: 1rem;
    padding: 2rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    border: 1px solid transparent;
    height: 100%;
    will-change: transform;
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: #e5e7eb;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}

.feature-icon {
    width: 3rem;
    height: 3rem;
    background-color: rgba(37, 99, 235, 0.1);
    color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 1rem;
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
}

/* How It Works Steps - daha hızlı yüklenmesi için optimize */
.steps-container {
    position: relative;
}

.steps-container::before {
    content: '';
    position: absolute;
    top: 2rem;
    bottom: 2rem;
    left: 1.5rem;
    width: 2px;
    background-color: #e5e7eb;
    z-index: 0;
}

.step-item {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2.5rem;
    position: relative;
}

.step-number {
    width: 3rem;
    height: 3rem;
    background-color: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 1.25rem;
    z-index: 1;
    position: relative;
}

.step-content {
    padding-top: 0.25rem;
    flex: 1;
}

/* FAQ Accordion - performans için CSS değişken ve will-change */
.faq-container {
    background-color: white;
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

.faq-item {
    border-bottom: 1px solid #eee;
}

.faq-item:last-child {
    border-bottom: none;
}

.faq-question {
    padding: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    transition: background-color 0.2s;
}

.faq-question:hover {
    background-color: rgba(37, 99, 235, 0.03);
}

.faq-icon {
    color: var(--primary-color);
    transition: transform 0.2s;
    will-change: transform;
}

.faq-question.active .faq-icon {
    transform: rotate(180deg);
}

.faq-answer {
    padding: 0 1.5rem;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-item.active .faq-answer {
    padding: 0 1.5rem 1.5rem;
    max-height: 500px;
}

/* Animations - performans için daha yavaş ve CPU dostu */
@keyframes float {
    0% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
    100% {
        transform: translateY(0);
    }
}

.float-animation {
    animation: float 8s ease-in-out infinite;
    will-change: transform;
}

/* Lazy loading için stil */
img.loaded {
    transition: opacity 0.3s;
}

img[loading="lazy"] {
    opacity: 0;
}

img[loading="lazy"].loaded {
    opacity: 1;
}

/* İndirme Butonları Modern Stilleri */
.download-button {
    display: inline-block;
    transition: all 0.2s ease;
    will-change: transform;
}

.download-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
}

.download-button .fab {
    opacity: 0.95;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .steps-container::before {
        left: 1.25rem;
    }
    
    .step-number {
        width: 2.5rem;
        height: 2.5rem;
        font-size: 1rem;
    }
    
    .step-item {
        gap: 1rem;
    }
    
    /* CPU-yoğun animasyonları mobilede devre dışı bırak */
    .float-animation {
        animation: none;
    }
    
    /* Mobilde daha hafif box-shadow */
    .feature-card {
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
        padding: 1.5rem;
    }
    
    .feature-card:hover {
        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
        transform: translateY(-3px);
    }
    
    /* Mobil için yükseklikleri düzenle */
    #header {
        height: 60px;
    }
    
    .faq-question {
        padding: 1.25rem;
    }
    
    .faq-item.active .faq-answer {
        padding: 0 1.25rem 1.25rem;
    }
    
    .feature-icon {
        width: 2.5rem;
        height: 2.5rem;
        font-size: 1.25rem;
        margin-bottom: 1rem;
    }
    
    .phone-screenshot {
        width: 64%;
    }
}

/* Daha küçük mobil cihazlar için */
@media (max-width: 480px) {
    html {
        font-size: 14px;
    }
    
    #header {
        height: 56px;
    }
    
    .feature-card {
        padding: 1.25rem;
    }
    
    .step-number {
        width: 2.25rem;
        height: 2.25rem;
    }
}

/* Print Media Query */
@media print {
    body {
        font-size: 12pt;
        color: #000;
    }
    
    a {
        text-decoration: underline;
        color: #000;
    }
    
    /* Yazıcı için gereksiz öğeleri gizle */
    .feature-icon, .step-number, button, #header, footer {
        display: none !important;
    }
}

/* Phone mockup and screenshots */
.phone-mockup {
    position: relative;
    max-width: 350px;
    margin: 0 auto;
}

.phone-screenshot {
    width: 65%;
    border-radius: 1rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    object-fit: cover;
    transform: translateY(-2%);
}

/* App screenshots */
.app-screenshot {
    width: 100%;
    border-radius: 32px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease;
}

.app-screenshot:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
}