/* costIT - Modern Sunucu Maliyet Hesaplama Uygulaması */

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

:root {
    /* Color Palette */
    --primary: #3b82f6;
    --primary-dark: #2563eb;
    --primary-light: #60a5fa;
    --secondary: #64748b;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    
    /* Background Colors - Beyaz Tema */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #e9ecef;
    --bg-card: #ffffff;
    
    /* Text Colors - Koyu Tema */
    --text-primary: #1a202c;
    --text-secondary: #4a5568;
    --text-muted: #718096;
    
    /* Border Colors */
    --border-primary: #e2e8f0;
    --border-secondary: #cbd5e0;
    
    /* Spacing - Küçültülmüş */
    --spacing-xs: 0.125rem;
    --spacing-sm: 0.25rem;
    --spacing-md: 0.5rem;
    --spacing-lg: 0.75rem;
    --spacing-xl: 1rem;
    --spacing-2xl: 1.5rem;
    
    /* Border Radius - Küçültülmüş */
    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 2px 4px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 8px 12px -2px rgba(0, 0, 0, 0.1);
    
    /* Transitions */
    --transition: all 0.2s ease-in-out;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.5;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
    font-size: 14px;
}

/* ===== LAYOUT COMPONENTS ===== */
.container {
    width: 100%;
    max-width: 320px;
    margin: 0 auto;
}

.container-wide {
    width: 100%;
    max-width: 1300px;
    margin: 0 auto;
    padding: var(--spacing-xl);
}

.container-admin {
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-lg);
}

/* ===== CARD COMPONENTS ===== */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-lg);
}

.card-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: var(--spacing-xs);
}

.card-subtitle {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* ===== FORM COMPONENTS ===== */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.form-input {
    width: 100%;
    padding: var(--spacing-lg);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.875rem;
    min-height: 44px;
    transition: var(--transition);
}

.form-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.1);
}

.form-input::placeholder {
    color: var(--text-muted);
}

/* Select elementleri için özel styling */
select.form-input {
    padding: var(--spacing-lg) var(--spacing-xl);
    min-height: 48px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
}

select.form-input option {
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

/* ===== BUTTON COMPONENTS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md) var(--spacing-lg);
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    font-size: 0.75rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
    min-height: 36px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    border-color: var(--primary);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border-color: var(--border-primary);
}

.btn-secondary:hover {
    background: var(--bg-secondary);
    border-color: var(--border-secondary);
}

.btn-danger {
    background: var(--danger);
    color: white;
    border-color: var(--danger);
}

.btn-danger:hover {
    background: #dc2626;
    transform: translateY(-1px);
}

.btn-sm {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.625rem;
    min-height: 28px;
}

.btn-lg {
    padding: var(--spacing-lg) var(--spacing-xl);
    font-size: 0.875rem;
    min-height: 44px;
}

/* ===== NAVIGATION ===== */
.navbar {
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow-md);
}

/* NAVBAR BRAND KOYU - BEYAZ TEMA İÇİN */
div.navbar div.navbar-brand,
.navbar div.navbar-brand,
div.navbar-brand,
.navbar-brand,
*[class*="navbar-brand"],
[class="navbar-brand"] {
    font-size: 1.5rem !important;
    font-weight: 700 !important;
    color: var(--text-primary) !important;
}

/* EK GÜVENLİK */
.navbar-brand {
    color: var(--text-primary) !important;
    font-size: 24px !important;
}

.navbar-nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.navbar-user {
    color: var(--text-secondary);
    font-size: 0.75rem;
    margin-right: var(--spacing-md);
}

/* ===== GRID SYSTEM ===== */
.grid {
    display: grid;
    gap: var(--spacing-md);
}

.grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

/* ===== UTILITY CLASSES ===== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-xl); }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }

.w-full { width: 100%; }
.h-full { height: 100%; }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: var(--spacing-sm); }
.gap-2 { gap: var(--spacing-md); }
.gap-3 { gap: var(--spacing-lg); }

/* ===== SPECIFIC PAGE STYLES ===== */

/* Dashboard & Admin Pages */
.dashboard-page body,
.admin-page body {
    display: block;
    align-items: flex-start;
    padding: var(--spacing-md);
}

/* Calculation Form */
.calculation-form {
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl);
    margin-bottom: var(--spacing-xl);
}

.calculation-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.calculation-actions {
    display: flex;
    gap: var(--spacing-md);
    align-items: end;
    flex-wrap: wrap;
}

.quantity-input {
    flex: 0 0 120px;
}

.quantity-input .form-input {
    height: 44px;
    min-height: 44px;
}

.calc-button {
    flex: 0 0 100px;
}

.calc-button .btn {
    height: 44px;
    min-height: 44px;
    width: 100%;
}

/* Result Display */
.result {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    text-align: center;
    font-size: 1rem;
    font-weight: 700;
    margin-top: var(--spacing-md);
    border: 1px solid var(--primary-light);
    box-shadow: var(--shadow-lg);
}

/* History List */
.history {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.history-item {
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}

.history-item:hover {
    border-color: var(--border-secondary);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.history-details {
    flex: 1;
}

.history-title {
    color: var(--text-primary);
    font-weight: 400;
    font-size: 0.9rem;
    margin-bottom: var(--spacing-xs);
}

.history-meta {
    color: var(--text-primary);
    font-size: 0.9rem;
}

.history-price {
    font-size: 1rem;
    font-weight: 700;
    color: var(--success);
    margin-right: var(--spacing-md);
}

/* Admin Forms */
.admin-form {
    display: grid;
    grid-template-columns: 1fr 1fr auto;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    align-items: end;
}

.admin-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.admin-item {
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}

.admin-item:hover {
    border-color: var(--border-secondary);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.admin-actions {
    display: flex;
    gap: var(--spacing-sm);
}

/* Links */
.links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-primary);
}

.links a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.75rem;
    transition: var(--transition);
}

.links a:hover {
    color: var(--primary-light);
    text-decoration: underline;
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 1200px) {
    .calculation-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .admin-form {
        grid-template-columns: 1fr 1fr auto;
    }
}

@media (max-width: 900px) {
    .calculation-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    body {
        padding: var(--spacing-sm);
        font-size: 13px;
    }
    
    .container-wide,
    .container-admin {
        padding: var(--spacing-lg);
    }
    
    .card,
    .calculation-form {
        padding: var(--spacing-lg);
    }
    
    .calculation-grid {
        gap: var(--spacing-md);
    }
    
    .navbar {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
    
    .calculation-grid {
        grid-template-columns: 1fr;
    }
    
    .calculation-actions {
        flex-direction: column;
    }
    
    .quantity-input,
    .calc-button {
        flex: none;
        width: 100%;
    }
    
    .admin-form {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .admin-item {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
    
    .admin-actions {
        justify-content: center;
    }
    
    .history-item {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
    
    .links {
        flex-direction: column;
        gap: var(--spacing-md);
    }
}

@media (max-width: 480px) {
    .card {
        padding: var(--spacing-md);
    }
    
    .btn {
        width: 100%;
    }
    
    .calculation-actions {
        gap: var(--spacing-md);
    }
    
    .container {
        max-width: 280px;
    }
}