/* ===== COLD THEME ===== */
:root {
  /* Cold Color Palette */
  --primary: #0066b3;
  --primary-dark: #004080;
  --primary-light: #3385cc;
  --secondary: #00a0d8;
  --accent: #00bcd4;
  --background: #f0f4f8;
  --surface: #ffffff;
  --surface-alt: #e8f0f7;
  --text-primary: #1a2332;
  --text-secondary: #4a5a6d;
  --border: #d0dce6;

  /* Typography */
  --font-primary: 'Roboto', sans-serif;
  --font-size-base: 16px;
  --line-height: 1.6;
}

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

html {
  scroll-behavior: smooth;
  font-size: var(--font-size-base);
}

body {
  font-family: var(--font-primary);
  color: var(--text-primary);
  background-color: var(--background);
  line-height: var(--line-height);
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

h1 {
  font-size: 2.5rem;
}

h2 {
  font-size: 2rem;
}

h3 {
  font-size: 1.5rem;
}

h4 {
  font-size: 1.25rem;
}

p {
  margin-bottom: 1rem;
  color: var(--text-secondary);
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

/* ===== LAYOUT ===== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ===== HEADER ===== */
header {
  background-color: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
}

nav {
  display: flex;
  gap: 2rem;
  align-items: center;
}

nav a {
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: 4px;
  transition: background-color 0.2s ease;
}

nav a:hover {
  background-color: var(--surface-alt);
}

nav a.active {
  color: var(--primary);
  font-weight: 700;
}

/* Language Switcher Dropdown */
.lang-switcher {
  position: relative;
  display: flex;
  align-items: center;
}
.lang-switcher-btn {
  background: none;
  border: 1px solid var(--border);
  color: var(--text-primary);
  padding: 0.4rem 0.8rem;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.2s ease;
  font-family: var(--font-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.lang-switcher-btn svg {
  width: 18px;
  height: 18px;
}
.lang-dropdown {
  display: none;
  position: absolute;
  top: 100%;
  right: 0;
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.5rem 0;
  margin-top: 0.5rem;
  min-width: 150px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  z-index: 1001;
}
.lang-dropdown.active {
  display: block;
}
.lang-dropdown-item {
  display: block;
  padding: 0.5rem 1rem;
  color: var(--text-primary);
  text-decoration: none;
  cursor: pointer;
  border: none;
  background: none;
  width: 100%;
  text-align: left;
  font-family: var(--font-primary);
  transition: background-color 0.2s ease;
}
.lang-dropdown-item:hover {
  background-color: var(--surface-alt);
}
.lang-dropdown-item.active {
  background-color: var(--primary);
  color: white;
  font-weight: 600;
}

/* Dark Mode Toggle */
.theme-toggle {
  background: none;
  border: 1px solid var(--border);
  color: var(--text-primary);
  padding: 0.4rem 0.8rem;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.2s ease;
  font-family: var(--font-primary);
}

.theme-toggle:hover {
  border-color: var(--primary);
  color: var(--primary);
}

/* ===== MAIN CONTENT ===== */
main {
  min-height: calc(100vh - 200px);
  padding: 3rem 0;
}

/* ===== HERO SECTION ===== */
.hero {
  text-align: center;
  padding: 4rem 0;
}

.hero h1 {
  margin-bottom: 1rem;
}

.hero p {
  font-size: 1.2rem;
  margin-bottom: 2rem;
  color: var(--text-secondary);
}

body.dark-mode .hero p {
  color: var(--dark-text-secondary);
}

/* ===== PUFF BLOCKS (Services/Work Types) ===== */
.puff-blocks {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
  margin: 3rem 0;
}

.puff-block {
  background-color: var(--surface);
  border-radius: 8px;
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

body.dark-mode .puff-block {
  background-color: var(--dark-surface);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.puff-block:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.15);
}

body.dark-mode .puff-block:hover {
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.4);
}

.puff-block-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
}

.puff-block-content {
  padding: 2rem;
}

.puff-block h3 {
  color: var(--primary);
  margin-bottom: 1rem;
}

body.dark-mode .puff-block h3 {
  color: var(--primary-light);
}

.puff-block p {
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

body.dark-mode .puff-block p {
  color: var(--dark-text-secondary);
}

/* ===== CONTACT FORM ===== */
.contact-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  margin: 3rem 0;
  align-items: start;
}

.contact-content {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.contact-body {
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--text-primary);
}

.contact-body p {
  margin-bottom: 1rem;
}

.contact-map {
  width: 100%;
}

.map-container {
  width: 100%;
  height: 400px;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

body.dark-mode .map-container {
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  font-size: 1.1rem;
}

.contact-info-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.contact-info-icon {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
  color: var(--primary);
  margin-top: 0.25rem;
}

body.dark-mode .contact-info-icon {
  color: var(--primary-light);
}

.contact-info-content h3 {
  margin-top: 0;
  font-size: 1.2rem;
  margin-bottom: 0.25rem;
}

.contact-info-content p {
  margin: 0;
}

.contact-svg {
  display: inline-block;
  vertical-align: text-bottom;
  font-size: 1.2em;
}

form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

input, textarea, select {
  padding: 0.75rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-family: var(--font-primary);
  font-size: 1rem;
  background-color: var(--background);
  color: var(--text-primary);
  transition: border-color 0.2s ease;
}

body.dark-mode input,
body.dark-mode textarea,
body.dark-mode select {
  background-color: var(--dark-surface-alt);
  color: var(--dark-text-primary);
  border-color: var(--dark-border);
}

input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(0, 102, 179, 0.1);
}

textarea {
  resize: vertical;
  min-height: 150px;
}

label {
  font-weight: 500;
  color: var(--text-primary);
}

body.dark-mode label {
  color: var(--dark-text-primary);
}

.btn {
  padding: 0.75rem 2rem;
  background-color: var(--primary);
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-weight: 600;
  font-size: 1rem;
  transition: background-color 0.2s ease;
  font-family: var(--font-primary);
}

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

/* ===== OPENSTREETMAP EMBED ===== */
.map-container {
  width: 100%;
  height: 400px;
  border-radius: 8px;
  overflow: hidden;
  margin-bottom: 2rem;
}

.map-container iframe {
  width: 100%;
  height: 100%;
  border: none;
}

/* ===== FOOTER ===== */
footer {
  background-color: var(--surface);
  border-top: 1px solid var(--border);
  padding: 2rem 0;
  margin-top: 4rem;
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

body.dark-mode footer {
  background-color: var(--dark-surface);
  border-top-color: var(--dark-border);
}

.footer-content {
  text-align: center;
  color: var(--text-secondary);
}

body.dark-mode .footer-content {
  color: var(--dark-text-secondary);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  h1 {
    font-size: 1.8rem;
  }

  h2 {
    font-size: 1.5rem;
  }

  h3 {
    font-size: 1.2rem;
  }

  .header-container {
    flex-direction: column;
    gap: 1rem;
  }

  nav {
    gap: 1rem;
    width: 100%;
    flex-wrap: wrap;
    justify-content: center;
  }

  nav a {
    padding: 0.4rem 0.8rem;
    font-size: 0.9rem;
  }

  .contact-section {
    grid-template-columns: 1fr;
  }

  .map-container {
    height: 300px;
  }

  .hero {
    padding: 2rem 0;
  }

  .hero h1 {
    font-size: 2rem;
  }

  main {
    padding: 2rem 0;
  }
}

@media (max-width: 480px) {
  :root {
    --font-size-base: 14px;
  }

  h1 {
    font-size: 1.5rem;
  }

  h2 {
    font-size: 1.3rem;
  }

  .container {
    padding: 0 1rem;
  }

  nav {
    gap: 0.5rem;
  }

  nav a {
    padding: 0.3rem 0.6rem;
    font-size: 1.125rem;
  }

  .puff-blocks {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .logo {
    font-size: 1.2rem;
  }

  .map-container {
    height: 300px;
  }
}