/* ========================================
   KURUMSAL TASARIM SİSTEMİ - MASTER CSS
   Tüm sayfalarda kullanılacak tutarlı stil
   ======================================== */

/* ========================================
   1. RENK DEĞİŞKENLERİ
   ======================================== */
:root {
    /* Ana Renkler */
    --primary: #2C3E50;
    --secondary: #E74C3C;
    --accent: #3498DB;
    
    /* Nötr Renkler */
    --dark: #1A252F;
    --gray-dark: #566573;
    --gray: #95A5A6;
    --gray-light: #BDC3C7;
    --light: #ECF0F1;
    --white: #FFFFFF;
    
    /* Semantic Colors */
    --success: #27AE60;
    --warning: #F39C12;
    --danger: #E74C3C;
    --info: #3498DB;
    
    /* Spacing */
    --section-padding: 80px;
    --card-padding: 32px;
    --element-gap: 24px;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);
    
    /* Transitions */
    --transition: all 0.3s ease;
}

/* ========================================
   2. GLOBAL RESET & BASE
   ======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--dark);
    background: var(--white);
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
    line-height: 1.3;
    color: var(--primary);
    margin-bottom: 1rem;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

p {
    color: var(--gray-dark);
    margin-bottom: 1rem;
}

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

a:hover {
    color: var(--secondary);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ========================================
   3. LAYOUT CONTAINERS
   ======================================== */
.corporate-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.corporate-section {
    padding: var(--section-padding) 0;
}

.corporate-section-light {
    background: #F8F9FA;
}

/* ========================================
   4. BUTTONS (Tutarlı)
   ======================================== */
.btn-corporate-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 16px 32px;
    background: var(--secondary);
    color: var(--white);
    border: none;
    border-radius: var(--radius-sm);
    font-weight: 500;
    font-size: 16px;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.btn-corporate-primary:hover {
    background: #C0392B;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    color: var(--white);
}

.btn-corporate-secondary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 16px 32px;
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
    border-radius: var(--radius-sm);
    font-weight: 500;
    font-size: 16px;
    cursor: pointer;
    transition: var(--transition);
}

.btn-corporate-secondary:hover {
    background: var(--primary);
    color: var(--white);
    transform: translateY(-2px);
}

/* ========================================
   5. CARDS (Tutarlı)
   ======================================== */
.corporate-card {
    background: var(--white);
    border: 1px solid var(--light);
    border-radius: var(--radius-md);
    padding: var(--card-padding);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    height: 100%;
}

.corporate-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.corporate-card-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--light);
    border-radius: var(--radius-md);
    margin-bottom: 24px;
}

.corporate-card-icon i {
    font-size: 32px;
    color: var(--primary);
}

.corporate-card-title {
    font-size: 1.25rem;
    color: var(--primary);
    margin-bottom: 12px;
}

.corporate-card-text {
    color: var(--gray-dark);
    line-height: 1.7;
}

/* ========================================
   6. SECTION HEADERS (Tutarlı)
   ======================================== */
.corporate-section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px;
}

.corporate-section-subtitle {
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--secondary);
    margin-bottom: 12px;
}

.corporate-section-title {
    font-size: 2.5rem;
    color: var(--primary);
    margin-bottom: 16px;
}

.corporate-section-description {
    font-size: 18px;
    color: var(--gray-dark);
    line-height: 1.7;
}

/* ========================================
   7. HERO (Sadece ana sayfa)
   ======================================== */
.corporate-hero {
    background: linear-gradient(135deg, var(--primary) 0%, var(--dark) 100%);
    color: var(--white);
    padding: 120px 0 80px;
    position: relative;
    overflow: hidden;
}

.corporate-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.5;
}

.corporate-hero-content {
    position: relative;
    z-index: 1;
}

.corporate-hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 50px;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 24px;
}

.corporate-hero-title {
    font-size: 3.5rem;
    color: var(--white);
    margin-bottom: 24px;
    line-height: 1.2;
}

.corporate-hero-description {
    font-size: 1.25rem;
    color: rgba(255,255,255,0.9);
    margin-bottom: 40px;
    max-width: 600px;
}

.corporate-hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

/* ========================================
   8. PAGE HEADER (Diğer sayfalar)
   ======================================== */
.corporate-page-header {
    background: var(--primary);
    color: var(--white);
    padding: 80px 0 60px;
    text-align: center;
}

.corporate-page-header h1 {
    color: var(--white);
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.corporate-breadcrumb {
    display: flex;
    justify-content: center;
    gap: 12px;
    font-size: 14px;
}

.corporate-breadcrumb a {
    color: rgba(255,255,255,0.8);
}

.corporate-breadcrumb a:hover {
    color: var(--white);
}

.corporate-breadcrumb span {
    color: rgba(255,255,255,0.5);
}

/* ========================================
   9. STATS (İstatistikler)
   ======================================== */
.corporate-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--element-gap);
}

.corporate-stat-item {
    text-align: center;
    padding: 32px;
    background: var(--white);
    border-radius: var(--radius-md);
    border: 1px solid var(--light);
}

.corporate-stat-icon {
    font-size: 48px;
    color: var(--secondary);
    margin-bottom: 16px;
}

.corporate-stat-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 8px;
}

.corporate-stat-label {
    font-size: 16px;
    color: var(--gray-dark);
}

/* ========================================
   10. PROJECT CARDS
   ======================================== */
.corporate-project-card {
    background: var(--white);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.corporate-project-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.corporate-project-image {
    position: relative;
    width: 100%;
    height: 280px;
    overflow: hidden;
}

.corporate-project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.corporate-project-card:hover .corporate-project-image img {
    transform: scale(1.05);
}

.corporate-project-category {
    position: absolute;
    top: 16px;
    left: 16px;
    padding: 6px 16px;
    background: var(--white);
    color: var(--primary);
    border-radius: 50px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
}

.corporate-project-content {
    padding: 24px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.corporate-project-title {
    font-size: 1.25rem;
    color: var(--primary);
    margin-bottom: 12px;
}

.corporate-project-description {
    color: var(--gray-dark);
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 16px;
    flex-grow: 1;
}

.corporate-project-link {
    color: var(--secondary);
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

/* ========================================
   11. RESPONSIVE
   ======================================== */
@media (max-width: 768px) {
    .corporate-hero-title {
        font-size: 2.5rem;
    }
    
    .corporate-section-title {
        font-size: 2rem;
    }
    
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    
    .corporate-section {
        padding: 60px 0;
    }
    
    .corporate-hero {
        padding: 80px 0 60px;
    }
}

/* ========================================
   12. UTILITIES
   ======================================== */
.text-primary { color: var(--primary); }
.text-secondary { color: var(--secondary); }
.text-muted { color: var(--gray-dark); }
.bg-light { background: #F8F9FA; }
.mb-0 { margin-bottom: 0; }
.mt-4 { margin-top: 32px; }
.mb-4 { margin-bottom: 32px; }