/*
 * DREVENICE LIPTOV - Main Stylesheet
 * Modern, clean design for family accommodation website
 * Mobile-first approach
 */

/* ========================================
   CSS RESET & BASE STYLES
   ======================================== */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  line-height: 1.6;
  color: var(--color-dark);
  background-color: var(--color-white);
}

/* ========================================
   CSS CUSTOM PROPERTIES (VARIABLES)
   ======================================== */

:root {
  /* Colors */
  --color-primary: #ea723d;
  --color-primary-dark: #d65f2a;
  --color-secondary: #5E8016;
  --color-secondary-dark: #4a6411;
  --color-dark: #303030;
  --color-dark-alt: #1a1a1a;
  --color-light: #f5f5f5;
  --color-white: #ffffff;
  --color-gray: #666666;
  --color-gray-light: #e0e0e0;

  /* Typography */
  --font-heading: 'Poppins', sans-serif;
  --font-body: 'Roboto', sans-serif;

  /* Font Sizes */
  --font-size-small: 0.875rem;      /* 14px */
  --font-size-base: 1rem;            /* 16px */
  --font-size-medium: 1.125rem;      /* 18px */
  --font-size-large: 1.25rem;        /* 20px */
  --font-size-xl: 1.5rem;            /* 24px */
  --font-size-2xl: 2rem;             /* 32px */
  --font-size-3xl: 2.625rem;         /* 42px */

  /* Spacing (8px base unit) */
  --spacing-xs: 0.5rem;              /* 8px */
  --spacing-sm: 1rem;                /* 16px */
  --spacing-md: 2rem;                /* 32px */
  --spacing-lg: 4rem;                /* 64px */
  --spacing-xl: 6rem;                /* 96px */

  /* Layout */
  --container-max-width: 1200px;
  --border-radius: 8px;
  --border-radius-sm: 4px;

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;

  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.2);
}

/* ========================================
   TYPOGRAPHY
   ======================================== */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-sm);
  color: var(--color-dark-alt);
}

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

h2 {
  font-size: var(--font-size-2xl);
}

h3 {
  font-size: var(--font-size-xl);
}

h4 {
  font-size: var(--font-size-large);
}

p {
  margin-bottom: var(--spacing-sm);
  color: var(--color-dark);
}

a {
  color: var(--color-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-secondary-dark);
}

/* ========================================
   LAYOUT COMPONENTS
   ======================================== */

.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}

.section {
  padding: var(--spacing-lg) 0;
}

.section-light {
  background-color: var(--color-white);
}

.section-dark {
  background-color: var(--color-light);
}

.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);
}

/* ========================================
   BUTTONS
   ======================================== */

.btn {
  display: inline-block;
  padding: 1rem 2rem;
  font-family: var(--font-heading);
  font-size: var(--font-size-base);
  font-weight: 700;
  text-align: center;
  text-decoration: none;
  border: none;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: all var(--transition-normal);
}

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

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover {
  background-color: var(--color-secondary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-large {
  padding: 1.25rem 2.5rem;
  font-size: var(--font-size-medium);
}

/* ========================================
   HEADER & NAVIGATION
   ======================================== */

.header {
  background-color: rgba(255, 255, 255, 0.5);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm);
}

.logo {
  display: block;
  line-height: 0;
}

.logo-img {
  height: 60px;
  width: auto;
  display: block;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--spacing-md);
  align-items: center;
}

.nav-menu a {
  color: var(--color-dark);
  font-weight: 600;
}

.nav-menu a:hover {
  color: var(--color-primary);
}

/* ========================================
   HERO SECTION
   ======================================== */

.hero {
  position: relative;
  height: 100vh;
  min-height: 500px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--color-white);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
}

.hero-content {
  padding: var(--spacing-md);
}

.hero h1 {
  color: var(--color-white);
  font-size: 2.5rem;
  margin-bottom: var(--spacing-sm);
}

/* Typewriter animation */
.typewriter {
  display: inline-block;
  min-height: 3rem;
}

.typewriter-text {
  border-right: 3px solid var(--color-white);
  padding-right: 5px;
  animation: blink-caret 0.75s step-end infinite;
}

@keyframes blink-caret {
  from, to {
    border-color: transparent;
  }
  50% {
    border-color: var(--color-white);
  }
}

.hero .subtitle {
  font-size: var(--font-size-large);
  margin-bottom: var(--spacing-md);
  color: var(--color-white);
}

/* Hero Carousel */
.hero-carousel {
  overflow: hidden;
}

.hero-slides {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

.hero-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transition: opacity 1.5s ease-in-out;
}

.hero-slide.active {
  opacity: 1;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(rgba(0, 0, 0, 0.4), rgba(0, 0, 0, 0.4));
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  padding: var(--spacing-md);
}

/* ========================================
   CARDS
   ======================================== */

.card {
  background-color: var(--color-white);
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

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

.card-image {
  width: 100%;
  background-color: var(--color-gray-light);
  line-height: 0;
}

.card-image img {
  width: 100%;
  height: auto;
  display: block;
}

.card-content {
  padding: var(--spacing-sm);
}

.card-title {
  font-size: var(--font-size-large);
  margin-bottom: var(--spacing-xs);
}

.card-subtitle {
  font-size: var(--font-size-small);
  color: var(--color-gray);
  margin-bottom: var(--spacing-sm);
}

/* ========================================
   REVIEWS
   ======================================== */

.review-card {
  background-color: var(--color-white);
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-sm);
  border-left: 4px solid var(--color-primary);
}

.review-rating {
  color: #ffa500;
  font-size: var(--font-size-large);
  margin-bottom: var(--spacing-xs);
}

.review-text {
  font-style: italic;
  margin-bottom: var(--spacing-sm);
}

.review-author {
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.review-source {
  font-size: var(--font-size-small);
  color: var(--color-gray);
}

/* ========================================
   FOOTER
   ======================================== */

.footer {
  background-color: var(--color-dark-alt);
  color: var(--color-white);
  padding: var(--spacing-lg) 0 var(--spacing-md);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.footer h3 {
  color: var(--color-white);
  margin-bottom: var(--spacing-sm);
}

.footer p,
.footer a {
  color: var(--color-gray-light);
}

.footer a:hover {
  color: var(--color-white);
}

.footer-bottom {
  border-top: 1px solid var(--color-dark);
  padding-top: var(--spacing-sm);
  margin-top: var(--spacing-md);
  text-align: center;
  color: var(--color-gray);
  font-size: var(--font-size-small);
}

/* ========================================
   FEATURES GRID
   ======================================== */

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-md);
}

.feature-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: var(--spacing-md);
}

.feature-icon {
  font-size: 4rem;
  margin-bottom: var(--spacing-sm);
}

.feature-content h3 {
  margin-bottom: var(--spacing-xs);
}

.feature-content p {
  color: var(--color-gray);
}