/* ========================================
   ASSETS/CSS/MAIN.CSS
   Osnovne varijable, reset i tipografija
   ======================================== */

/* CSS Custom Properties - glavne varijable */
:root {
  /* Glavne boje - food-inspired paleta */
  --primary-green: #27ae60;      /* Zelena - zdravo, prirodno */
  --primary-orange: #f39c12;     /* Naranžasta - toplo, energično */
  --primary-red: #e74c3c;        /* Crvena - akcenti, alert */
  --primary-blue: #3498db;       /* Plava - linkovi, info */
  
  /* Neutralne boje */
  --white: #ffffff;
  --light-gray: #f8f9fa;
  --medium-gray: #e9ecef;
  --dark-gray: #6c757d;
  --darker-gray: #495057;
  --black: #212529;
  
  /* Semantičke boje */
  --success: #27ae60;
  --warning: #f39c12;
  --error: #e74c3c;
  --info: #3498db;
  
  /* Tipografija */
  --font-family-primary: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  --font-family-heading: 'Arial', 'Helvetica', sans-serif;
  
  /* Font veličine */
  --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 */
  
  /* Spacing - konzistentan razmak */
  --spacing-xs: 0.25rem;  /* 4px */
  --spacing-sm: 0.5rem;   /* 8px */
  --spacing-md: 1rem;     /* 16px */
  --spacing-lg: 1.5rem;   /* 24px */
  --spacing-xl: 2rem;     /* 32px */
  --spacing-2xl: 3rem;    /* 48px */
  --spacing-3xl: 4rem;    /* 64px */
  
  /* Border radius */
  --radius-sm: 0.25rem;   /* 4px */
  --radius-md: 0.5rem;    /* 8px */
  --radius-lg: 0.75rem;   /* 12px */
  --radius-xl: 1rem;      /* 16px */
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  
  /* Transitions */
  --transition-fast: 0.15s ease-in-out;
  --transition-normal: 0.3s ease-in-out;
  --transition-slow: 0.5s ease-in-out;
  
  /* Breakpoints (za responsive) */
  --breakpoint-sm: 576px;
  --breakpoint-md: 768px;
  --breakpoint-lg: 992px;
  --breakpoint-xl: 1200px;
}

/* ========================================
   CSS RESET & NORMALIZACIJA
   ======================================== */

/* Box sizing reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* HTML & Body osnove */
html {
  font-size: 16px; /* Base font size */
  line-height: 1.6;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family-primary);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--black);
  background-color: var(--light-gray);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ========================================
   TIPOGRAFIJA
   ======================================== */

/* Headings */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family-heading);
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: var(--spacing-md);
  color: var(--black);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); }

/* Paragraph */
p {
  margin-bottom: var(--spacing-md);
  color: var(--darker-gray);
}

/* Links */
a {
  color: var(--primary-blue);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover, a:focus {
  color: var(--primary-green);
  text-decoration: underline;
}

/* Lists */
ul, ol {
  margin-bottom: var(--spacing-md);
  padding-left: var(--spacing-lg);
}

li {
  margin-bottom: var(--spacing-xs);
}

/* Small text */
small {
  font-size: var(--font-size-sm);
  color: var(--dark-gray);
}

/* Strong & emphasis */
strong, b {
  font-weight: 600;
}

em, i {
  font-style: italic;
}

/* ========================================
   UTILITY KLASE
   ======================================== */

/* Text alignment */
.text-left { text-align: left; }
.text-center { text-align: center; }
.text-right { text-align: right; }

/* Text colors */
.text-primary { color: var(--primary-green); }
.text-secondary { color: var(--primary-orange); }
.text-success { color: var(--success); }
.text-warning { color: var(--warning); }
.text-error { color: var(--error); }
.text-info { color: var(--info); }
.text-muted { color: var(--dark-gray); }

/* Background colors */
.bg-primary { background-color: var(--primary-green); }
.bg-secondary { background-color: var(--primary-orange); }
.bg-white { background-color: var(--white); }
.bg-light { background-color: var(--light-gray); }

/* Spacing utilities */
.m-0 { margin: 0; }
.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }

.p-1 { padding: var(--spacing-sm); }
.p-2 { padding: var(--spacing-md); }
.p-3 { padding: var(--spacing-lg); }

/* Display utilities */
.d-block { display: block; }
.d-inline { display: inline; }
.d-inline-block { display: inline-block; }
.d-flex { display: flex; }
.d-grid { display: grid; }
.d-none { display: none; }

/* Flex utilities */
.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

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

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

/* Border radius */
.rounded-sm { border-radius: var(--radius-sm); }
.rounded-md { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-xl { border-radius: var(--radius-xl); }

/* Shadows */
.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }

/* Width utilities */
.w-full { width: 100%; }
.w-auto { width: auto; }

/* ========================================
   CONTAINER & LAYOUT
   ======================================== */

/* Main container */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* Responsive containers */
@media (min-width: 576px) {
  .container { max-width: 540px; }
}

@media (min-width: 768px) {
  .container { max-width: 720px; }
}

@media (min-width: 992px) {
  .container { max-width: 960px; }
}

@media (min-width: 1200px) {
  .container { max-width: 1140px; }
}

/* Content wrapper */
.content-wrapper {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Main content area */
.main-content {
  flex: 1;
  padding: var(--spacing-xl) 0;
}

/* ========================================
   RESPONSIVE UTILITIES
   ======================================== */

/* Hide on mobile */
@media (max-width: 767px) {
  .d-none-mobile { display: none !important; }
}

/* Hide on desktop */
@media (min-width: 768px) {
  .d-none-desktop { display: none !important; }
}

/* Show only on mobile */
@media (max-width: 767px) {
  .d-block-mobile { display: block !important; }
}

/* Show only on desktop */
@media (min-width: 768px) {
  .d-block-desktop { display: block !important; }
}