/* =========================================
   1. Temel Ayarlar & Değişkenler
   ========================================= */
body {
    /* Sabit beyaz yerine Bootstrap'in tema rengini kullanıyoruz */
    background-color: var(--bs-body-bg);
    color: var(--bs-body-color);
    font-family: 'Inter', sans-serif;
    -webkit-font-smoothing: antialiased;
    margin: 0;
    padding: 0;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* =========================================
   2. Navigasyon & Header
   ========================================= */
.navbar {
    background-color: var(--bs-body-bg) !important;
    border-bottom: 1px solid var(--bs-border-color);
    transition: all 0.3s ease;
}

.navbar-nav .nav-item a {
    text-decoration: none;
    color: #6c757d;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.navbar-nav .nav-item a:hover,
.navbar-nav .nav-item a.active {
    color: #0d6efd;
}

/* =========================================
   3. İçerik Alanları (Hero & Blog)
   ========================================= */
.content-section {
    padding-top: 80px;
    min-height: calc(100vh - 80px);
}

.hero-section {
    min-height: 100vh;
    padding: 100px 20px;
}

.hero-text {
    font-size: 3.5rem;
    font-weight: 600;
    letter-spacing: -0.04em;
    line-height: 1.1;
}

.sub-text {
    font-size: 1.25rem;
    color: #6c757d;
    max-width: 700px;
    font-weight: 300;
}

/* Blog Kartları */
.wide-blog-card {
    background-color: var(--bs-body-bg);
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid var(--bs-border-color);
    transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
    position: relative;
}

.card-body-expanded {
    background: var(--bs-body-bg);
    padding: 2rem;
}

.wide-blog-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.1) !important;
    border-color: #0d6efd;
}

/* =========================================
   4. İletişim Kartı & Formlar
   ========================================= */
.contact-card {
    border-radius: 24px;
    overflow: hidden;
    min-height: 650px;
    border: 1px solid var(--bs-border-color);
    background-color: var(--bs-body-bg);
}

.contact-info {
    width: 35%;
    background: linear-gradient(135deg, #0d6efd 0%, #0a58ca 100%);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 3rem;
}

.contact-form-wrapper {
    width: 65%;
    padding: 3rem;
}

.custom-input {
    background-color: transparent !important;
    border-bottom: 1px solid var(--bs-border-color) !important;
    border-top: none !important;
    border-left: none !important;
    border-right: none !important;
    border-radius: 0 !important;
    padding: 15px 0 !important;
    font-size: 1rem;
    color: inherit !important;
}

.custom-input:focus {
    box-shadow: none !important;
    border-bottom: 2px solid #0d6efd !important;
}

/* =========================================
   5. Karanlık Mod (Dark Mode) Spesifik Ayarlar
   ========================================= */
/* Bootstrap 5.3'ün data-bs-theme="dark" özniteliği aktif olduğunda devreye girer */
[data-bs-theme="dark"] body {
    background-color: #0b0e14 !important;
    color: #e9ecef !important;
}

[data-bs-theme="dark"] .navbar {
    background-color: #161b22 !important;
    border-bottom-color: #30363d;
}

[data-bs-theme="dark"] .wide-blog-card,
[data-bs-theme="dark"] .contact-card,
[data-bs-theme="dark"] .card,
[data-bs-theme="dark"] .code-block {
    background-color: #161b22 !important;
    border-color: #30363d !important;
}

[data-bs-theme="dark"] code {
    background-color: #2d333b;
    color: #3d8bfd;
}

[data-bs-theme="dark"] .sub-text,
[data-bs-theme="dark"] .text-muted {
    color: #8b949e !important;
}

/* =========================================
   6. Mobil Uyumluluk (Responsive)
   ========================================= */
@media (max-width: 991px) {
    .navbar-collapse {
        background-color: var(--bs-tertiary-bg);
        margin-top: 15px;
        border-radius: 15px;
        padding: 20px;
        box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    }
}

@media (max-width: 768px) {
    .hero-text { font-size: 2.2rem; }
    .contact-card { flex-direction: column !important; min-height: auto; }
    .contact-info, .contact-form-wrapper { width: 100%; padding: 30px !important; }
    .contact-info { width: 100%; }
}

/* Footer */
footer {
    background-color: var(--bs-body-bg);
    border-top: 1px solid var(--bs-border-color);
}

html {
    scroll-behavior: smooth;
}