/* ============================================
   SYSTEM V7 - SIFIRDAN YENİ SİSTEM
   Modern Component-Based Architecture
   ============================================ */

/* CSS Variables - Design Tokens */
:root {
    /* Colors */
    --color-primary: #2563eb;
    --color-primary-dark: #1e40af;
    --color-primary-light: #3b82f6;
    --color-accent: #60a5fa;
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-danger: #ef4444;
    
    /* Neutrals */
    --color-white: #ffffff;
    --color-black: #000000;
    --color-gray-50: #f9fafb;
    --color-gray-100: #f3f4f6;
    --color-gray-200: #e5e7eb;
    --color-gray-300: #d1d5db;
    --color-gray-400: #9ca3af;
    --color-gray-500: #6b7280;
    --color-gray-600: #4b5563;
    --color-gray-700: #374151;
    --color-gray-800: #1f2937;
    --color-gray-900: #111827;
    
    /* Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;
    --space-3xl: 64px;
    
    /* Typography */
    --font-family: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-xs: 12px;
    --font-size-sm: 14px;
    --font-size-base: 16px;
    --font-size-lg: 18px;
    --font-size-xl: 20px;
    --font-size-2xl: 24px;
    --font-size-3xl: 30px;
    --font-size-4xl: 36px;
    --font-size-5xl: 48px;
    --font-size-6xl: 60px;
    --font-size-7xl: 72px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);
    --shadow-2xl: 0 25px 50px rgba(0, 0, 0, 0.25);
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 24px;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================
   HEADER V7 - COMPONENT SYSTEM
   ============================================ */

.header-system {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--color-gray-200);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.header-system.scrolled {
    box-shadow: var(--shadow-md);
    background: rgba(255, 255, 255, 0.98);
}

.header-system__container {
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 var(--space-xl);
    height: 90px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-xl);
}

.header-system.scrolled .header-system__container {
    height: 75px;
}

/* Logo - Sadece admin'den yüklenen görsel */
.header-system__logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    flex-shrink: 0;
}

.header-system__logo-img {
    display: block;
    max-height: 50px;
    width: auto;
    max-width: 180px;
    object-fit: contain;
}

.header-system__logo-fallback {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-gray-600);
    font-size: 24px;
}

/* Navigation Component */
.header-system__nav {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.header-system__nav-list {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: var(--space-xs);
    background: var(--color-gray-100);
    padding: var(--space-xs);
    border-radius: var(--radius-full);
}

.header-system__nav-item {
    position: relative;
}

.header-system__nav-link {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-lg);
    color: var(--color-gray-700);
    text-decoration: none;
    font-size: var(--font-size-sm);
    font-weight: 600;
    font-family: var(--font-family);
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
    position: relative;
    white-space: nowrap;
}

.header-system__nav-link::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: var(--radius-full);
    background: var(--color-white);
    box-shadow: var(--shadow-sm);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.header-system__nav-link:hover::before,
.header-system__nav-link.active::before {
    opacity: 1;
}

.header-system__nav-link:hover,
.header-system__nav-link.active {
    color: var(--color-primary);
    transform: translateY(-2px);
}

.header-system__nav-link span {
    position: relative;
    z-index: 1;
}

.header-system__nav-link i {
    position: relative;
    z-index: 1;
    font-size: 12px;
    transition: transform var(--transition-base);
}

.header-system__nav-link:hover i {
    transform: scale(1.2);
}

/* Actions Component */
.header-system__actions {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    flex-shrink: 0;
}

.header-system__action-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-full);
    background: var(--color-gray-100);
    border: none;
    color: var(--color-gray-700);
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    font-size: var(--font-size-lg);
}

.header-system__action-btn:hover {
    background: var(--color-primary);
    color: var(--color-white);
    transform: scale(1.1);
    box-shadow: var(--shadow-md);
}

.header-system__action-btn--primary {
    width: auto;
    padding: 0 var(--space-lg);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-white);
    font-weight: 700;
    font-size: var(--font-size-sm);
    gap: var(--space-sm);
}

.header-system__action-btn--primary:hover {
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
    box-shadow: var(--shadow-lg);
}

/* Mobile Toggle - Simple & Clean */
.header-system__mobile-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 44px;
    height: 44px;
    padding: 0;
    background: transparent;
    border: none;
    cursor: pointer;
    gap: 6px;
    z-index: 1002;
}

.header-system__mobile-toggle span {
    display: block;
    width: 28px;
    height: 3px;
    background: var(--color-gray-900);
    border-radius: 2px;
    transition: all 0.3s ease;
}

.header-system__mobile-toggle.active span:nth-child(1) {
    transform: translateY(9px) rotate(45deg);
}

.header-system__mobile-toggle.active span:nth-child(2) {
    opacity: 0;
}

.header-system__mobile-toggle.active span:nth-child(3) {
    transform: translateY(-9px) rotate(-45deg);
}

/* Mobile Menu - Simple & Clean Design */
.mobile-menu-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.mobile-menu-overlay.active {
    opacity: 1;
    visibility: visible;
}

.mobile-menu-panel {
    position: fixed;
    top: 0;
    right: 0;
    width: 100%;
    max-width: 380px;
    height: 100vh;
    background: var(--color-white);
    box-shadow: -2px 0 20px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transform: translateX(100%);
    transition: transform 0.3s ease;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    overflow-x: hidden;
}

.mobile-menu-panel.active {
    transform: translateX(0);
}

.mobile-menu-header {
    padding: var(--space-xl);
    border-bottom: 1px solid var(--color-gray-200);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
    background: var(--color-white);
}

.mobile-menu-close {
    width: 40px;
    height: 40px;
    padding: 0;
    background: var(--color-gray-100);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    transition: background 0.2s ease;
}

.mobile-menu-close:hover {
    background: var(--color-gray-200);
}

.mobile-menu-close span {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--color-gray-700);
    border-radius: 1px;
    transition: all 0.2s ease;
}

.mobile-menu-close span:nth-child(1) {
    transform: rotate(45deg) translate(3px, 3px);
}

.mobile-menu-close span:nth-child(2) {
    transform: rotate(-45deg) translate(3px, -3px);
}

.mobile-menu-logo {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    text-decoration: none;
    color: var(--color-gray-900);
}

.mobile-menu-logo img {
    max-width: 140px;
    max-height: 44px;
    width: auto;
    height: auto;
    object-fit: contain;
}

.mobile-menu-logo i {
    font-size: 24px;
    color: var(--color-primary);
}

.mobile-menu-logo span {
    font-size: var(--font-size-base);
    font-weight: 700;
    font-family: var(--font-family);
}

.mobile-menu-nav {
    flex: 1;
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
    overflow-y: auto;
    background: var(--color-white);
}

.mobile-menu-link {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    color: var(--color-gray-700);
    text-decoration: none;
    font-size: var(--font-size-base);
    font-weight: 600;
    font-family: var(--font-family);
    border-radius: var(--radius-md);
    transition: all 0.2s ease;
    background: transparent;
}

.mobile-menu-link i {
    width: 24px;
    text-align: center;
    font-size: var(--font-size-lg);
    color: var(--color-primary);
    transition: color 0.2s ease;
}

.mobile-menu-link:hover,
.mobile-menu-link.active {
    background: var(--color-gray-50);
    color: var(--color-primary);
}

.mobile-menu-link.active {
    background: rgba(37, 99, 235, 0.1);
    color: var(--color-primary);
}

.mobile-menu-footer {
    padding: var(--space-lg);
    border-top: 1px solid var(--color-gray-200);
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    flex-shrink: 0;
    background: var(--color-white);
}

.mobile-menu-action {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md);
    background: var(--color-gray-50);
    border-radius: var(--radius-md);
    text-decoration: none;
    color: var(--color-gray-700);
    font-size: var(--font-size-sm);
    font-weight: 600;
    transition: all 0.2s ease;
}

.mobile-menu-action i {
    font-size: var(--font-size-lg);
    color: var(--color-primary);
}

.mobile-menu-action:hover {
    background: var(--color-primary);
    color: var(--color-white);
}

.mobile-menu-action:hover i {
    color: var(--color-white);
}

/* Responsive */
@media (max-width: 1200px) {
    .header-system__nav-link {
        padding: var(--space-sm) var(--space-md);
        font-size: var(--font-size-xs);
    }
}

@media (max-width: 992px) {
    .header-system__nav,
    .header-system__actions {
        display: none;
    }
    
    .header-system__mobile-toggle {
        display: flex;
    }
    
    .mobile-menu-overlay {
        display: block;
    }
    
    .header-system__container {
        padding: 0 var(--space-lg);
    }
}

@media (max-width: 576px) {
    .header-system__container {
        height: 75px;
        padding: 0 var(--space-md);
    }
    
    .header-system.scrolled .header-system__container {
        height: 65px;
    }
    
    .header-system__logo-img {
        max-height: 44px;
        max-width: 140px;
    }
}