/**
 * Professional Layout System
 * Perspektif Metal - Corporate Design System
 * 
 * Bu dosya tutarlı grid sistemi, spacing ve layout kurallarını tanımlar.
 */

/* ============================================
   CSS CUSTOM PROPERTIES - LAYOUT SYSTEM
   ============================================ */

:root {
  /* Grid System */
  --grid-columns: 12;
  --grid-gap-mobile: 24px;
  --grid-gap-tablet: 28px;
  --grid-gap-desktop: 32px;
  
  /* Container */
  --container-max-width: 1200px;
  --container-padding-mobile: 24px;
  --container-padding-tablet: 40px;
  --container-padding-desktop: 80px;
  
  /* Spacing Scale - 8px base */
  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 24px;
  --space-lg: 32px;
  --space-xl: 48px;
  --space-2xl: 64px;
  --space-3xl: 96px;
  --space-4xl: 128px;
  
  /* Section Spacing */
  --section-padding-mobile: 64px;
  --section-padding-tablet: 80px;
  --section-padding-desktop: 96px;
  
  /* Typography Scale */
  --font-size-xs: 0.75rem;    /* 12px */
  --font-size-sm: 0.875rem;   /* 14px */
  --font-size-base: 1rem;     /* 16px */
  --font-size-lg: 1.125rem;   /* 18px */
  --font-size-xl: 1.25rem;    /* 20px */
  --font-size-2xl: 1.5rem;    /* 24px */
  --font-size-3xl: 1.875rem;  /* 30px */
  --font-size-4xl: 2.25rem;   /* 36px */
  --font-size-5xl: 3rem;      /* 48px */
  --font-size-6xl: 3.75rem;   /* 60px */
  
  /* Font Weights */
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  /* Line Heights */
  --line-height-tight: 1.2;
  --line-height-snug: 1.375;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.625;
  --line-height-loose: 1.75;
  
  /* Letter Spacing */
  --letter-spacing-tighter: -0.05em;
  --letter-spacing-tight: -0.025em;
  --letter-spacing-normal: 0;
  --letter-spacing-wide: 0.025em;
  --letter-spacing-wider: 0.05em;
  
  /* Shadows - Subtle Corporate */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 12px 24px rgba(0, 0, 0, 0.12);
  --shadow-2xl: 0 20px 40px rgba(0, 0, 0, 0.15);
  
  /* Hover Shadows */
  --shadow-card-hover: 0 16px 32px rgba(0, 0, 0, 0.12);
  --shadow-button-hover: 0 8px 20px rgba(15, 118, 110, 0.25);
  
  /* Borders */
  --border-subtle: 1px solid rgba(0, 0, 0, 0.06);
  --border-light: 1px solid rgba(0, 0, 0, 0.1);
  --border-medium: 1px solid rgba(0, 0, 0, 0.15);
  --border-strong: 1px solid rgba(0, 0, 0, 0.2);
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 24px;
  --radius-full: 9999px;
  
  /* Transition Durations */
  --duration-fast: 150ms;
  --duration-normal: 300ms;
  --duration-slow: 500ms;
  --duration-slower: 700ms;
  
  /* Easing Functions */
  --ease-default: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-in: cubic-bezier(0.4, 0, 1, 1);
  --ease-out: cubic-bezier(0, 0, 0.2, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* ============================================
   PROFESSIONAL CONTAINER SYSTEM
   ============================================ */

.pro-container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-padding-mobile);
  padding-right: var(--container-padding-mobile);
}

/* Container variants */
.pro-container--narrow {
  max-width: 800px;
}

.pro-container--wide {
  max-width: 1400px;
}

.pro-container--full {
  max-width: 100%;
  padding-left: var(--space-md);
  padding-right: var(--space-md);
}

/* ============================================
   PROFESSIONAL SECTION SYSTEM
   ============================================ */

.pro-section {
  padding-top: var(--section-padding-mobile);
  padding-bottom: var(--section-padding-mobile);
}

/* Section with background transition padding */
.pro-section--padded {
  padding-top: calc(var(--section-padding-mobile) + var(--space-sm));
  padding-bottom: calc(var(--section-padding-mobile) + var(--space-sm));
}

/* Alternating section backgrounds */
.pro-section--alt {
  background-color: var(--bg-gray-50, #f7fafc);
}

.pro-section--dark {
  background-color: var(--primary-color, #0F766E);
  color: white;
}

/* ============================================
   PROFESSIONAL GRID SYSTEM
   ============================================ */

.pro-grid {
  display: grid;
  gap: var(--grid-gap-mobile);
  grid-template-columns: 1fr;
}

/* Grid column variants */
.pro-grid--2 {
  grid-template-columns: 1fr;
}

.pro-grid--3 {
  grid-template-columns: 1fr;
}

.pro-grid--4 {
  grid-template-columns: 1fr;
}

/* Grid with auto-fit */
.pro-grid--auto {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

/* ============================================
   PROFESSIONAL FLEX UTILITIES
   ============================================ */

.pro-flex {
  display: flex;
  gap: var(--space-md);
}

.pro-flex--center {
  align-items: center;
  justify-content: center;
}

.pro-flex--between {
  justify-content: space-between;
  align-items: center;
}

.pro-flex--column {
  flex-direction: column;
}

.pro-flex--wrap {
  flex-wrap: wrap;
}

/* ============================================
   PROFESSIONAL SPACING UTILITIES
   ============================================ */

/* Margin utilities */
.pro-mt-xs { margin-top: var(--space-xs); }
.pro-mt-sm { margin-top: var(--space-sm); }
.pro-mt-md { margin-top: var(--space-md); }
.pro-mt-lg { margin-top: var(--space-lg); }
.pro-mt-xl { margin-top: var(--space-xl); }
.pro-mt-2xl { margin-top: var(--space-2xl); }

.pro-mb-xs { margin-bottom: var(--space-xs); }
.pro-mb-sm { margin-bottom: var(--space-sm); }
.pro-mb-md { margin-bottom: var(--space-md); }
.pro-mb-lg { margin-bottom: var(--space-lg); }
.pro-mb-xl { margin-bottom: var(--space-xl); }
.pro-mb-2xl { margin-bottom: var(--space-2xl); }

/* Padding utilities */
.pro-p-xs { padding: var(--space-xs); }
.pro-p-sm { padding: var(--space-sm); }
.pro-p-md { padding: var(--space-md); }
.pro-p-lg { padding: var(--space-lg); }
.pro-p-xl { padding: var(--space-xl); }

/* ============================================
   PROFESSIONAL SECTION HEADER
   ============================================ */

.pro-section-header {
  text-align: center;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: var(--space-xl);
}

.pro-section-title {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  letter-spacing: var(--letter-spacing-tight);
  line-height: var(--line-height-tight);
  margin-bottom: var(--space-sm);
  color: var(--primary-color, #0F766E);
}

.pro-section-subtitle {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-relaxed);
  color: var(--text-secondary, #4a5568);
  margin: 0;
}

/* ============================================
   ENHANCED CONTAINER (Override existing)
   ============================================ */

.container {
  max-width: var(--container-max-width);
  padding-left: var(--container-padding-mobile);
  padding-right: var(--container-padding-mobile);
}

/* ============================================
   ENHANCED SECTION SPACING (Override existing)
   ============================================ */

section {
  padding-top: var(--section-padding-mobile);
  padding-bottom: var(--section-padding-mobile);
}

/* ============================================
   TABLET RESPONSIVE (768px+)
   ============================================ */

@media screen and (min-width: 768px) {
  .pro-container {
    padding-left: var(--container-padding-tablet);
    padding-right: var(--container-padding-tablet);
  }
  
  .pro-section {
    padding-top: var(--section-padding-tablet);
    padding-bottom: var(--section-padding-tablet);
  }
  
  .pro-grid {
    gap: var(--grid-gap-tablet);
  }
  
  .pro-grid--2 {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .pro-grid--3 {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .pro-grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .pro-section-title {
    font-size: var(--font-size-4xl);
  }
  
  .container {
    padding-left: var(--container-padding-tablet);
    padding-right: var(--container-padding-tablet);
  }
  
  section {
    padding-top: var(--section-padding-tablet);
    padding-bottom: var(--section-padding-tablet);
  }
}

/* ============================================
   DESKTOP RESPONSIVE (1024px+)
   ============================================ */

@media screen and (min-width: 1024px) {
  .pro-container {
    padding-left: var(--container-padding-desktop);
    padding-right: var(--container-padding-desktop);
  }
  
  .pro-section {
    padding-top: var(--section-padding-desktop);
    padding-bottom: var(--section-padding-desktop);
  }
  
  .pro-grid {
    gap: var(--grid-gap-desktop);
  }
  
  .pro-grid--3 {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .pro-grid--4 {
    grid-template-columns: repeat(4, 1fr);
  }
  
  .pro-section-title {
    font-size: var(--font-size-5xl);
  }
  
  .container {
    padding-left: var(--container-padding-desktop);
    padding-right: var(--container-padding-desktop);
  }
  
  section {
    padding-top: var(--section-padding-desktop);
    padding-bottom: var(--section-padding-desktop);
  }
}

/* ============================================
   LARGE DESKTOP (1400px+)
   ============================================ */

@media screen and (min-width: 1400px) {
  .pro-container--wide {
    padding-left: var(--space-3xl);
    padding-right: var(--space-3xl);
  }
}