/* --- CSS Reset ve Base --- */
/* :root değişkenleri artık DB'deki aktif tema tarafından
   head_web.php üzerinden enjekte ediliyor.
   Fallback değerler ThemeService::cssVariables() içinde tanımlı. */


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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    color: var(--text-main);
    background-color: var(--bg-light);
    line-height: 1.6;
    overflow-x: hidden;
}

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

ul {
    list-style: none;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.text-center {
    text-align: center;
}

/* --- Typography --- */
h1, h2, h3, h4 {
    color: var(--secondary-color);
    font-weight: 700;
    line-height: 1.2;
}

/* --- Header --- */
.main-header {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
    padding: 10px 0;
    transition: all var(--transition-speed) ease;
}

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

.logo {
    display: inline-flex;
    align-items: baseline;
    gap: 3px;
    text-decoration: none;
    line-height: 1;
}

.logo-pae {
    font-size: 22px;
    font-weight: 800;
    letter-spacing: -0.5px;
    color: var(--secondary-color);
    font-family: 'Inter', sans-serif;
}

.logo-tv {
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--primary-color);
    padding: 2px 6px;
    border: 1.5px solid var(--primary-color);
    border-radius: 4px;
    line-height: 1;
    align-self: center;
}

.logo:hover .logo-pae { color: var(--primary-color); }
.logo:hover .logo-tv  { background: var(--primary-color); color: #fff; }

.main-nav ul {
    display: flex;
    flex-direction: row;
    gap: 20px;
    margin: 0;
    padding: 0;
    align-items: center; /* Butonların hizalı durması için eklendi */
}

.main-nav a:not(.nav-btn) {
    font-weight: 500;
    font-size: 16px;
    color: var(--text-muted);
    position: relative;
    padding: 5px 0;
    transition: color var(--transition-speed);
}

.main-nav a:not(.nav-btn):hover, 
.main-nav a:not(.nav-btn).active {
    color: var(--primary-color);
}

.main-nav a:not(.nav-btn)::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: width var(--transition-speed) ease;
}

.main-nav a:not(.nav-btn):hover::after, 
.main-nav a:not(.nav-btn).active::after {
    width: 100%;
}

/* --- Kurumsal Standart Navigasyon Butonları --- */
.main-nav .nav-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 8px 24px;
    font-size: 15px;
    font-weight: 600;
    border-radius: 6px;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    text-decoration: none;
    position: relative;
    overflow: hidden;
    animation: none !important; /* Yüklenirken aşağıdan/yukarıdan kayma efektini iptal et */
}

.main-nav .nav-btn::after {
    display: none; /* Alt çizgi efekti iptal */
}

.main-nav .nav-btn.btn-outline {
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
    background: transparent;
}

.main-nav .nav-btn.btn-outline:hover,
.main-nav .nav-btn.btn-outline.active {
    background: rgba(100, 94, 157, 0.05); /* Çok hafif arkaplan kurumsal */
    color: var(--primary-dark);
    border-color: var(--primary-dark);
}

.main-nav .nav-btn.btn-primary {
    background: var(--primary-color);
    color: #fff;
    border: 1px solid var(--primary-color);
    box-shadow: 0 2px 4px rgba(100, 94, 157, 0.15);
}

.main-nav .nav-btn.btn-primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    box-shadow: 0 4px 12px rgba(100, 94, 157, 0.25);
    transform: translateY(-1px);
}

/* --- Hero Section --- */
.hero-section {
    padding: 140px 0 120px;
    background: linear-gradient(135deg, #F9FAFB 0%, #E8EBF2 100%);
    position: relative;
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

.hero-title {
    font-size: 3.5rem;
    margin-bottom: 25px;
    background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: fadeInUp 0.8s ease backwards;
}

.hero-description {
    font-size: 1.2rem;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto 40px;
    animation: fadeInUp 0.8s ease 0.2s backwards;
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    font-size: 16px;
    font-weight: 600;
    border-radius: 50px;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    border: none;
    outline: none;
}

.btn-primary {
    background: var(--primary-color);
    color: var(--bg-white);
    box-shadow: 0 10px 20px rgba(100, 94, 157, 0.3);
    animation: fadeInUp 0.8s ease 0.4s backwards;
}

.btn-primary:hover {
    background: var(--primary-dark);
    color: #fff;
    transform: translateY(-3px);
    box-shadow: 0 15px 25px rgba(100, 94, 157, 0.4);
}

/* --- Features Section --- */
.features-section {
    padding: 100px 0;
    background: var(--bg-white);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.feature-card {
    background: var(--bg-white);
    border: 1px solid rgba(0,0,0,0.05);
    padding: 40px 30px;
    border-radius: var(--border-radius);
    transition: all var(--transition-speed) ease;
    box-shadow: 0 4px 6px rgba(0,0,0,0.02);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
    border-color: rgba(100, 94, 157, 0.2);
}

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

.feature-card p {
    color: var(--text-muted);
}

/* --- Footer --- */
.main-footer {
    background: var(--secondary-color);
    color: #fff;
    padding: 40px 0;
    text-align: center;
}

.main-footer p {
    opacity: 0.7;
    font-size: 14px;
}

/* --- Animations --- */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* --- Responsive Layout --- */
@media (max-width: 768px) {
    .main-header .container {
        flex-direction: column;
        gap: 15px;
    }
    .main-nav {
        width: 100%;
        overflow-x: auto;
        padding-bottom: 5px;
    }
    .main-nav ul {
        gap: 15px;
        flex-direction: row;
        justify-content: center;
        flex-wrap: nowrap;
        width: max-content;
        margin: 0 auto;
    }
    .hero-title {
        font-size: 2.5rem;
    }
    .hero-description {
        font-size: 1.1rem;
    }
    .features-grid {
        grid-template-columns: 1fr;
    }
}