/* ========================================
   PERİ BİLİŞİM DESIGN SYSTEM
   Tüm sayfalarda kullanılacak merkezi tasarım sistemi
   Ana sayfa tasarımını referans alarak oluşturulmuştur
   ======================================== */

:root {
    /* ========== RENK PALETİ ========== */
    /* Primary Colors - Mor Tonları (Marka Kimliği) */
    --peri-primary-50: #f3e8ff;
    --peri-primary-100: #e9d5ff;
    --peri-primary-200: #d8b4fe;
    --peri-primary-300: #c084fc;
    --peri-primary-400: #a855f7;
    --peri-primary-500: #9333ea;    /* Ana Marka Rengi */
    --peri-primary-600: #7e22ce;
    --peri-primary-700: #6b21a8;
    --peri-primary-800: #581c87;
    --peri-primary-900: #3b0764;
    
    /* Secondary Colors - Koyu Lacivert */
    --peri-secondary-50: #f0f4f8;
    --peri-secondary-100: #d9e2ec;
    --peri-secondary-200: #bcccdc;
    --peri-secondary-300: #9fb3c8;
    --peri-secondary-400: #829ab1;
    --peri-secondary-500: #627d98;
    --peri-secondary-600: #486581;
    --peri-secondary-700: #334e68;
    --peri-secondary-800: #243b53;
    --peri-secondary-900: #102a43;  /* Koyu Lacivert */
    
    /* Accent Colors - Enerjik Turuncu */
    --peri-accent-50: #fff7ed;
    --peri-accent-100: #ffedd5;
    --peri-accent-200: #fed7aa;
    --peri-accent-300: #fdba74;
    --peri-accent-400: #fb923c;
    --peri-accent-500: #f97316;     /* Ana Accent */
    --peri-accent-600: #ea580c;
    --peri-accent-700: #c2410c;
    --peri-accent-800: #9a3412;
    --peri-accent-900: #7c2d12;
    
    /* Semantic Colors */
    --peri-success: #28a745;
    --peri-warning: #ffc107;
    --peri-error: #ef4444;
    --peri-info: #3b82f6;
    
    /* Neutral Colors */
    --peri-gray-50: #f9fafb;
    --peri-gray-100: #f3f4f6;
    --peri-gray-200: #e5e7eb;
    --peri-gray-300: #d1d5db;
    --peri-gray-400: #9ca3af;
    --peri-gray-500: #6b7280;
    --peri-gray-600: #4b5563;
    --peri-gray-700: #374151;
    --peri-gray-800: #1f2937;
    --peri-gray-900: #111827;
    
    /* Background Colors */
    --peri-bg-primary: #ffffff;
    --peri-bg-secondary: #f9fafb;
    --peri-bg-tertiary: #f3f4f6;
    --peri-bg-dark: #1f2937;
    
    /* Text Colors */
    --peri-text-primary: #111827;
    --peri-text-secondary: #4b5563;
    --peri-text-tertiary: #6b7280;
    --peri-text-inverse: #ffffff;
    
    /* ========== TİPOGRAFİ ========== */
    /* Font Families */
    --peri-font-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --peri-font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    /* Font Weights */
    --peri-font-weight-light: 300;
    --peri-font-weight-normal: 400;
    --peri-font-weight-medium: 500;
    --peri-font-weight-semibold: 600;
    --peri-font-weight-bold: 700;
    --peri-font-weight-extrabold: 800;
    
    /* Font Sizes - Mobile First */
    --peri-font-size-xs: 0.75rem;      /* 12px */
    --peri-font-size-sm: 0.875rem;      /* 14px */
    --peri-font-size-base: 1rem;        /* 16px */
    --peri-font-size-lg: 1.125rem;      /* 18px */
    --peri-font-size-xl: 1.25rem;       /* 20px */
    --peri-font-size-2xl: 1.5rem;       /* 24px */
    --peri-font-size-3xl: 1.875rem;     /* 30px */
    --peri-font-size-4xl: 2.25rem;       /* 36px */
    
    /* Line Heights */
    --peri-line-height-none: 1;
    --peri-line-height-tight: 1.25;
    --peri-line-height-snug: 1.375;
    --peri-line-height-normal: 1.5;
    --peri-line-height-relaxed: 1.625;
    --peri-line-height-loose: 2;
    
    /* Letter Spacing */
    --peri-letter-spacing-tighter: -0.05em;
    --peri-letter-spacing-tight: -0.025em;
    --peri-letter-spacing-normal: 0;
    --peri-letter-spacing-wide: 0.025em;
    --peri-letter-spacing-wider: 0.05em;
    --peri-letter-spacing-widest: 0.1em;
    
    /* ========== SPACING (8px Grid) ========== */
    --peri-spacing-0: 0;
    --peri-spacing-1: 0.25rem;   /* 4px */
    --peri-spacing-2: 0.5rem;    /* 8px */
    --peri-spacing-3: 0.75rem;   /* 12px */
    --peri-spacing-4: 1rem;       /* 16px */
    --peri-spacing-5: 1.25rem;    /* 20px */
    --peri-spacing-6: 1.5rem;     /* 24px */
    --peri-spacing-8: 2rem;       /* 32px */
    --peri-spacing-10: 2.5rem;    /* 40px */
    --peri-spacing-12: 3rem;      /* 48px */
    --peri-spacing-16: 4rem;       /* 64px */
    --peri-spacing-20: 5rem;      /* 80px */
    
    /* ========== BORDER RADIUS ========== */
    --peri-radius-none: 0;
    --peri-radius-sm: 0.25rem;    /* 4px */
    --peri-radius-md: 0.5rem;     /* 8px */
    --peri-radius-lg: 0.75rem;    /* 12px */
    --peri-radius-xl: 1rem;       /* 16px */
    --peri-radius-2xl: 1.5rem;    /* 24px */
    --peri-radius-full: 9999px;   /* Tam yuvarlak */
    
    /* ========== SHADOWS ========== */
    --peri-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --peri-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --peri-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --peri-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --peri-shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --peri-shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.06);
    
    /* ========== TRANSITIONS ========== */
    --peri-transition-fast: 0.15s ease;
    --peri-transition-base: 0.2s ease;
    --peri-transition-slow: 0.3s ease;
    
    /* ========== Z-INDEX ========== */
    --peri-z-base: 1;
    --peri-z-dropdown: 1000;
    --peri-z-sticky: 1020;
    --peri-z-fixed: 1030;
    --peri-z-modal-backdrop: 1040;
    --peri-z-modal: 1050;
    --peri-z-popover: 1060;
    --peri-z-tooltip: 1070;
}

/* ========== TİPOGRAFİ STİLLERİ ========== */
body {
    font-family: var(--peri-font-body);
    font-size: var(--peri-font-size-base);
    font-weight: var(--peri-font-weight-normal);
    line-height: var(--peri-line-height-relaxed);
    color: var(--peri-text-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--peri-font-heading);
    font-weight: var(--peri-font-weight-bold);
    line-height: var(--peri-line-height-tight);
    color: var(--peri-text-primary);
    margin-bottom: var(--peri-spacing-4);
}

h1 {
    font-size: var(--peri-font-size-3xl);
    margin-bottom: var(--peri-spacing-6);
}

h2 {
    font-size: var(--peri-font-size-2xl);
    margin-bottom: var(--peri-spacing-5);
}

h3 {
    font-size: var(--peri-font-size-xl);
    font-weight: var(--peri-font-weight-semibold);
    margin-bottom: var(--peri-spacing-4);
}

h4 {
    font-size: var(--peri-font-size-lg);
    font-weight: var(--peri-font-weight-semibold);
    margin-bottom: var(--peri-spacing-3);
}

p {
    font-size: var(--peri-font-size-base);
    line-height: var(--peri-line-height-relaxed);
    color: var(--peri-text-secondary);
    margin-bottom: var(--peri-spacing-4);
}

/* ========== BUTON STİLLERİ ========== */
.btn-peri-primary {
    background: linear-gradient(135deg, var(--peri-primary-500), var(--peri-primary-700));
    color: var(--peri-text-inverse);
    border: none;
    border-radius: var(--peri-radius-md);
    padding: var(--peri-spacing-4) var(--peri-spacing-6);
    font-size: var(--peri-font-size-base);
    font-weight: var(--peri-font-weight-semibold);
    font-family: var(--peri-font-body);
    box-shadow: var(--peri-shadow-md);
    transition: all var(--peri-transition-base);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--peri-spacing-2);
    text-decoration: none;
}

.btn-peri-primary:hover {
    background: linear-gradient(135deg, var(--peri-primary-600), var(--peri-primary-800));
    box-shadow: var(--peri-shadow-lg);
    transform: translateY(-2px);
    color: var(--peri-text-inverse);
    text-decoration: none;
}

.btn-peri-primary:active {
    transform: translateY(0);
    box-shadow: var(--peri-shadow-md);
}

.btn-peri-primary:focus {
    outline: 2px solid var(--peri-primary-500);
    outline-offset: 2px;
}

.btn-peri-secondary {
    background: var(--peri-bg-secondary);
    color: var(--peri-text-primary);
    border: 1px solid var(--peri-gray-300);
    border-radius: var(--peri-radius-md);
    padding: var(--peri-spacing-4) var(--peri-spacing-6);
    font-size: var(--peri-font-size-base);
    font-weight: var(--peri-font-weight-semibold);
    font-family: var(--peri-font-body);
    transition: all var(--peri-transition-base);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--peri-spacing-2);
    text-decoration: none;
}

.btn-peri-secondary:hover {
    background: var(--peri-gray-100);
    border-color: var(--peri-gray-400);
    color: var(--peri-text-primary);
    text-decoration: none;
}

.btn-peri-accent {
    background: linear-gradient(135deg, var(--peri-accent-500), var(--peri-accent-700));
    color: var(--peri-text-inverse);
    border: none;
    border-radius: var(--peri-radius-md);
    padding: var(--peri-spacing-4) var(--peri-spacing-6);
    font-size: var(--peri-font-size-base);
    font-weight: var(--peri-font-weight-semibold);
    font-family: var(--peri-font-body);
    box-shadow: var(--peri-shadow-md);
    transition: all var(--peri-transition-base);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--peri-spacing-2);
    text-decoration: none;
}

.btn-peri-accent:hover {
    background: linear-gradient(135deg, var(--peri-accent-600), var(--peri-accent-800));
    box-shadow: var(--peri-shadow-lg);
    transform: translateY(-2px);
    color: var(--peri-text-inverse);
    text-decoration: none;
}

/* Buton Boyutları */
.btn-peri-sm {
    padding: var(--peri-spacing-2) var(--peri-spacing-4);
    font-size: var(--peri-font-size-sm);
}

.btn-peri-md {
    padding: var(--peri-spacing-4) var(--peri-spacing-6);
    font-size: var(--peri-font-size-base);
}

.btn-peri-lg {
    padding: var(--peri-spacing-5) var(--peri-spacing-8);
    font-size: var(--peri-font-size-lg);
}

/* ========== KART STİLLERİ ========== */
.card-peri {
    background: var(--peri-bg-primary);
    border-radius: var(--peri-radius-lg);
    padding: var(--peri-spacing-6) var(--peri-spacing-4);
    box-shadow: var(--peri-shadow-md);
    border: 1px solid var(--peri-gray-200);
    transition: all var(--peri-transition-base);
}

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

.card-peri-compact {
    padding: var(--peri-spacing-4) var(--peri-spacing-3);
    border-radius: var(--peri-radius-md);
}

.card-peri-feature {
    padding: var(--peri-spacing-6) var(--peri-spacing-4);
    min-height: 180px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
}

/* ========== İKON STİLLERİ ========== */
.icon-peri-container {
    width: 64px;
    height: 64px;
    border-radius: var(--peri-radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--peri-primary-500), var(--peri-primary-700));
    box-shadow: var(--peri-shadow-md);
    transition: all var(--peri-transition-base);
    margin-bottom: var(--peri-spacing-4);
}

.icon-peri-container:hover {
    box-shadow: var(--peri-shadow-lg);
    transform: scale(1.05);
}

.icon-peri-container-lg {
    width: 80px;
    height: 80px;
}

.icon-peri-container-xl {
    width: 100px;
    height: 100px;
}

.icon-peri {
    font-size: 2rem;
    color: var(--peri-text-inverse);
}

.icon-peri-lg {
    font-size: 2.5rem;
}

.icon-peri-xl {
    font-size: 3rem;
}

/* ========== SECTION STİLLERİ ========== */
.section-peri {
    padding: var(--peri-spacing-10) 0;
    position: relative;
}

.section-peri-compact {
    padding: var(--peri-spacing-8) 0;
}

.section-peri-spacious {
    padding: var(--peri-spacing-16) 0;
}

/* ========== GRADIENT BACKGROUNDS ========== */
.bg-peri-gradient-primary {
    background: linear-gradient(135deg, var(--peri-primary-500), var(--peri-primary-700));
    color: var(--peri-text-inverse);
}

.bg-peri-gradient-secondary {
    background: linear-gradient(135deg, var(--peri-secondary-800), var(--peri-secondary-900));
    color: var(--peri-text-inverse);
}

.bg-peri-gradient-accent {
    background: linear-gradient(135deg, var(--peri-accent-500), var(--peri-accent-700));
    color: var(--peri-text-inverse);
}

/* ========== GLASSMORPHISM ========== */
.glass-peri {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--peri-radius-lg);
}

.glass-peri-strong {
    background: rgba(255, 255, 255, 0.25);
    backdrop-filter: blur(30px);
    -webkit-backdrop-filter: blur(30px);
}

/* ========== RESPONSIVE UTILITIES ========== */
@media (max-width: 767.98px) {
    h1 {
        font-size: var(--peri-font-size-2xl);
    }
    
    h2 {
        font-size: var(--peri-font-size-xl);
    }
    
    h3 {
        font-size: var(--peri-font-size-lg);
    }
    
    .section-peri {
        padding: var(--peri-spacing-8) 0;
    }
    
    .section-peri-spacious {
        padding: var(--peri-spacing-10) 0;
    }
    
    .card-peri {
        padding: var(--peri-spacing-4) var(--peri-spacing-3);
    }
    
    .card-peri-feature {
        min-height: 160px;
        padding: var(--peri-spacing-4) var(--peri-spacing-3);
    }
    
    .icon-peri-container {
        width: 56px;
        height: 56px;
    }
    
    .icon-peri-container-lg {
        width: 64px;
        height: 64px;
    }
    
    .icon-peri {
        font-size: 1.75rem;
    }
    
    .icon-peri-lg {
        font-size: 2rem;
    }
    
    .btn-peri-lg {
        padding: var(--peri-spacing-4) var(--peri-spacing-6);
        font-size: var(--peri-font-size-base);
    }
}

@media (max-width: 575.98px) {
    h1 {
        font-size: var(--peri-font-size-xl);
    }
    
    h2 {
        font-size: var(--peri-font-size-lg);
    }
    
    .section-peri {
        padding: var(--peri-spacing-6) 0;
    }
    
    .card-peri-feature {
        min-height: 140px;
    }
}