:root {
    --primary: #0d6efd;
    --primary-dark: #0b5ed7;
    --secondary: #6c757d;
    --dark-bg: #0a0e1a;
    --light-bg: #f8fafc;
    --card-shadow: 0 20px 35px -12px rgba(0, 0, 0, 0.08);
    --transition-smooth: all 0.4s cubic-bezier(0.2, 0.9, 0.4, 1.1);
}

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

body {
    font-family: 'Inter', sans-serif;
    overflow-x: hidden;
    color: #1e2a3e;
    background-color: #ffffff;
    scroll-behavior: smooth;
}

/* TİPOGRAFİ İYİLEŞTİRMELERİ */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 600;
    letter-spacing: -0.02em;
}

.text-gradient {
    background: linear-gradient(135deg, #0d6efd 0%, #00b4d8 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

/* NAVBAR */
.navbar {
    transition: var(--transition-smooth);
    padding: 1rem 0;
    background-color: transparent;
    backdrop-filter: blur(0px);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(12px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    padding: 0.7rem 0;
}

.navbar.scrolled .nav-link,
.navbar.scrolled .navbar-brand {
    color: #1e2a3e;
}

.navbar-brand {
    font-size: 1.7rem;
    letter-spacing: -0.5px;
    color: white;
    transition: color 0.2s;
}

.navbar.scrolled .navbar-brand {
    color: #0d6efd;
}

.nav-link {
    font-weight: 500;
    margin: 0 0.2rem;
    color: rgba(255, 255, 255, 0.9);
    transition: var(--transition-smooth);
}

.navbar.scrolled .nav-link {
    color: #1f2a44;
}

.nav-link:hover,
.nav-link.active {
    color: #0d6efd !important;
}

/* HERO BÖLÜMÜ */
.hero-section {
    position: relative;
    min-height: 100vh;
    background: linear-gradient(135deg, #0a2540 0%, #0f2b3d 100%);
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 80% 20%, rgba(13, 110, 253, 0.15) 0%, rgba(0, 0, 0, 0.2) 90%);
    pointer-events: none;
}

.hero-section .container {
    position: relative;
    z-index: 2;
}

.hero-card {
    background: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(2px);
    border-radius: 2rem;
    box-shadow: 0 25px 45px -12px rgba(0, 0, 0, 0.25);
    transition: transform 0.3s ease;
}

.avatar {
    background: rgba(13, 110, 253, 0.1);
    width: 55px;
    height: 55px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Genel Bölüm Stili */
.section-padding {
    padding: 100px 0;
}

.bg-soft-light {
    background-color: #f9fafc;
}

/* Hizmet Kartları */
.service-card {
    background: white;
    border-radius: 1.5rem;
    transition: var(--transition-smooth);
    border: 1px solid rgba(0, 0, 0, 0.04);
    position: relative;
}

.shadow-hover {
    box-shadow: var(--card-shadow);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 30px 40px -20px rgba(0, 0, 0, 0.15);
    border-color: rgba(13, 110, 253, 0.2);
}

.icon-bg i {
    background: linear-gradient(145deg, #eef4ff, white);
    padding: 14px;
    border-radius: 18px;
    box-shadow: 0 8px 14px -6px rgba(0, 0, 0, 0.05);
}

/* İstatistik Bölümü */
.stat-item {
    background: rgba(255, 255, 255, 0.03);
    border-radius: 2rem;
    backdrop-filter: blur(2px);
    transition: all 0.3s;
}

.stat-number {
    font-weight: 800;
    line-height: 1.2;
}

/* CTA Banner */
.cta-banner {
    background: linear-gradient(105deg, #0d6efd 0%, #0a58ca 100%);
    padding: 80px 0;
    margin: 0;
    clip-path: polygon(0 0, 100% 10%, 100% 90%, 0 100%);
}

/* Form alanları */
.form-control,
.form-select {
    border: 1px solid #e2e8f0;
    border-radius: 1rem;
    padding: 0.8rem 1.2rem;
    font-size: 1rem;
    transition: all 0.2s;
}

.form-control:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(13, 110, 253, 0.15);
}

.btn-primary {
    background: linear-gradient(95deg, #0d6efd, #0b5ed7);
    border: none;
    transition: transform 0.2s, box-shadow 0.2s;
    font-weight: 600;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 20px -10px #0d6efd;
    background: linear-gradient(95deg, #0b5ed7, #0a58ca);
}

/* Intersection Observer ile tetiklenen animasyonlar */
.fade-up {
    opacity: 0;
    transform: translateY(35px);
    transition: opacity 0.8s cubic-bezier(0.2, 0.9, 0.4, 1.1), transform 0.8s cubic-bezier(0.2, 0.9, 0.4, 1.1);
}

.fade-up.visible {
    opacity: 1;
    transform: translateY(0);
}

.fade-left {
    opacity: 0;
    transform: translateX(-40px);
    transition: all 0.8s ease;
}

.fade-left.visible {
    opacity: 1;
    transform: translateX(0);
}

.fade-right {
    opacity: 0;
    transform: translateX(40px);
    transition: all 0.8s ease;
}

.fade-right.visible {
    opacity: 1;
    transform: translateX(0);
}

/* responsive düzenlemeler */
@media (max-width: 768px) {
    .section-padding {
        padding: 60px 0;
    }

    .display-3 {
        font-size: 2.4rem;
    }

    .hero-section {
        min-height: 90vh;
    }

    .cta-banner {
        clip-path: polygon(0 0, 100% 5%, 100% 95%, 0 100%);
    }

    .navbar.scrolled {
        background: rgba(255, 255, 255, 0.98);
    }
}

/* özel kaydırma çubuğu */
::-webkit-scrollbar {
    width: 9px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: #0d6efd;
    border-radius: 10px;
}