/* ===================================
   DESIGN SYSTEM & CSS VARIABLES
   =================================== */

:root {
  /* Brand Colors */
  --color-primary: #2D5F3F;
  --color-primary-light: #3A7A52;
  --color-primary-dark: #1F4129;
  --color-accent: #E67E22;
  --color-accent-light: #F39C12;
  --color-accent-dark: #D35400;

  /* Neutrals */
  --color-black: #1A1A1A;
  --color-white: #FFFFFF;
  --color-gray-100: #F5F5F5;
  --color-gray-200: #E0E0E0;
  --color-gray-300: #CCCCCC;
  --color-gray-600: #666666;
  --color-gray-800: #333333;

  /* Typography */
  --font-primary: 'Bitter', Georgia, serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  --spacing-3xl: 6rem;

  /* Effects */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);

  --transition-fast: 150ms ease-in-out;
  --transition-base: 250ms ease-in-out;
  --transition-slow: 350ms ease-in-out;

  --border-radius-sm: 4px;
  --border-radius-md: 8px;
  --border-radius-lg: 12px;
  --border-radius-xl: 16px;
}

/* ===================================
   DARK MODE
   =================================== */

body.dark-mode {
  --color-black: #FFFFFF;
  --color-white: #0A0A0A;
  --color-gray-100: #1A1A1A;
  --color-gray-200: #2A2A2A;
  --color-gray-300: #4A4A4A;
  --color-gray-600: #BBBBBB;
  --color-gray-800: #F0F0F0;
}

body.dark-mode .nav {
  background-color: rgba(10, 10, 10, 0.95);
}

body.dark-mode .service-card,
body.dark-mode .blog-card,
body.dark-mode .contact-form,
body.dark-mode .credentials {
  background-color: var(--color-gray-100);
  border-color: var(--color-gray-300);
}

body.dark-mode .section-alt {
  background-color: #0F0F0F;
}

body.dark-mode .footer {
  background-color: #000000;
  color: #FFFFFF;
}

body.dark-mode .footer-section p,
body.dark-mode .footer-section a {
  color: #E0E0E0;
}

body.dark-mode .footer-bottom {
  border-top-color: #2A2A2A;
  color: #AAAAAA;
}

body.dark-mode .contact-info p,
body.dark-mode .contact-item-content p {
  color: #BBBBBB;
}

body.dark-mode .about-text p {
  color: #BBBBBB;
}

body.dark-mode .service-card p,
body.dark-mode .blog-excerpt {
  color: #BBBBBB;
}

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

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

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

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

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-base);
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

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

h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
}

h1 {
  font-size: var(--font-size-5xl);
  letter-spacing: -0.02em;
}

h2 {
  font-size: var(--font-size-4xl);
  letter-spacing: -0.01em;
}

h3 {
  font-size: var(--font-size-3xl);
}

h4 {
  font-size: var(--font-size-2xl);
}

h5 {
  font-size: var(--font-size-xl);
}

h6 {
  font-size: var(--font-size-lg);
}

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

/* ===================================
   LAYOUT UTILITIES
   =================================== */

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

.hero .container {
  max-width: 100%;
  padding: 0 var(--spacing-xl);
}

.section {
  padding: var(--spacing-3xl) 0;
}

.section-alt {
  background-color: var(--color-gray-100);
}

/* ===================================
   NAVIGATION
   =================================== */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
  z-index: 1000;
  transition: all var(--transition-base);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm) var(--spacing-md);
  max-width: 1200px;
  margin: 0 auto;
}

.nav-logo {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

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

.nav-link {
  font-weight: 500;
  color: var(--color-gray-800);
  transition: color var(--transition-base);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: width var(--transition-base);
}

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

.nav-link:hover::after {
  width: 100%;
}

.lang-switcher {
  display: flex;
  gap: var(--spacing-xs);
  background-color: var(--color-gray-100);
  padding: var(--spacing-xs);
  border-radius: var(--border-radius-md);
}

.lang-btn {
  padding: 0.25rem 0.75rem;
  border-radius: var(--border-radius-sm);
  font-weight: 600;
  font-size: var(--font-size-sm);
  color: var(--color-gray-600);
  transition: all var(--transition-fast);
}

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

.lang-btn:hover:not(.active) {
  color: var(--color-primary);
}

.theme-switcher {
  display: flex;
  align-items: center;
}

.theme-btn {
  padding: 0.25rem 0.75rem;
  background-color: var(--color-gray-100);
  border-radius: var(--border-radius-md);
  font-size: var(--font-size-lg);
  transition: all var(--transition-base);
  display: flex;
  align-items: center;
  justify-content: center;
}

.theme-btn:hover {
  background-color: var(--color-gray-200);
  transform: scale(1.1);
}

.theme-icon {
  display: block;
  line-height: 1;
}

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: var(--spacing-xs);
}

.mobile-menu-toggle span {
  width: 24px;
  height: 2px;
  background-color: var(--color-black);
  transition: all var(--transition-base);
}

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

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, #2C5F6F 0%, #1A3F4F 100%);
  color: var(--color-white);
  position: relative;
  overflow: hidden;
  padding-top: 80px;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image:
    radial-gradient(circle at 20% 50%, rgba(230, 126, 34, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.05) 0%, transparent 50%);
  pointer-events: none;
}

.hero-wrapper {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-3xl);
  width: 100%;
}

.hero-content {
  flex: 2;
  max-width: 66%;
}

.hero-image-container {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  max-width: 33%;
}

.hero-image-placeholder {
  width: 280px;
  height: 400px;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border-radius: var(--border-radius-xl);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-md);
  border: 2px dashed rgba(255, 255, 255, 0.3);
  transition: all var(--transition-base);
}

.hero-image-placeholder:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.5);
  transform: translateY(-4px);
}

.hero-image-placeholder .placeholder-icon {
  font-size: 4rem;
  opacity: 0.5;
}

.hero-image-placeholder .placeholder-text {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.7);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin: 0;
}

.hero-subtitle {
  font-size: var(--font-size-lg);
  font-weight: 500;
  color: var(--color-accent-light);
  margin-bottom: var(--spacing-sm);
  opacity: 0;
  animation: fadeInUp 0.8s ease-out 0.2s forwards;
}

.hero h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  margin-bottom: var(--spacing-md);
  opacity: 0;
  animation: fadeInUp 0.8s ease-out 0.4s forwards;
}

.hero-description {
  font-size: var(--font-size-xl);
  line-height: 1.7;
  margin-bottom: var(--spacing-xl);
  opacity: 0.9;
  opacity: 0;
  animation: fadeInUp 0.8s ease-out 0.6s forwards;
}

.hero-cta {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
  opacity: 0;
  animation: fadeInUp 0.8s ease-out 0.8s forwards;
}

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

.btn {
  display: inline-block;
  padding: 0.875rem 2rem;
  font-weight: 600;
  font-size: var(--font-size-base);
  border-radius: var(--border-radius-md);
  transition: all var(--transition-base);
  text-align: center;
  cursor: pointer;
}

.btn-primary {
  background-color: var(--color-accent);
  color: var(--color-white);
  box-shadow: var(--shadow-md);
}

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

.btn-secondary {
  background-color: transparent;
  color: var(--color-white);
  border: 2px solid var(--color-white);
}

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

.btn-outline {
  background-color: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

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

/* ===================================
   ABOUT SECTION
   =================================== */

.about-content {
  display: grid;
  grid-template-columns: 1fr 1.5fr 1fr;
  gap: var(--spacing-xl);
  align-items: start;
}

.about-image-container {
  position: relative;
}

.about-image-placeholder {
  width: 100%;
  aspect-ratio: 3/4;
  background: linear-gradient(135deg, var(--color-gray-100) 0%, var(--color-gray-200) 100%);
  border-radius: var(--border-radius-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-md);
  border: 3px dashed var(--color-gray-300);
  transition: all var(--transition-base);
}

.about-image-placeholder:hover {
  border-color: var(--color-primary);
  background: linear-gradient(135deg, var(--color-gray-200) 0%, var(--color-gray-100) 100%);
}

.placeholder-icon {
  font-size: 5rem;
  opacity: 0.3;
}

.placeholder-text {
  font-size: var(--font-size-sm);
  color: var(--color-gray-600);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin: 0;
}

.about-text h2 {
  color: var(--color-primary);
}

.about-text p {
  font-size: var(--font-size-lg);
  color: var(--color-gray-600);
  margin-bottom: var(--spacing-md);
}

.credentials {
  background-color: var(--color-white);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  border-left: 4px solid var(--color-accent);
}

.credentials h3 {
  color: var(--color-primary);
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-md);
}

.credentials ul {
  list-style: none;
}

.credentials li {
  padding: var(--spacing-sm) 0;
  color: var(--color-gray-600);
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
}

.credentials li::before {
  content: '✓';
  color: var(--color-primary);
  font-weight: 700;
  font-size: var(--font-size-lg);
}

/* ===================================
   SERVICES/SPECIALIZATIONS
   =================================== */

.services-intro {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--spacing-2xl);
}

.services-intro h2 {
  color: var(--color-primary);
}

.services-intro p {
  font-size: var(--font-size-lg);
  color: var(--color-gray-600);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
}

.service-card {
  background-color: var(--color-white);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
  border-top: 4px solid var(--color-gray-200);
}

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-top-color: var(--color-accent);
}

.service-icon {
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
  display: flex;
  align-items: center;
  justify-content: flex-start;
}

.service-icon svg {
  transition: transform var(--transition-base);
}

.service-card:hover .service-icon svg {
  transform: scale(1.1);
  color: var(--color-accent);
}

.service-card h3 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.service-card p {
  color: var(--color-gray-600);
  line-height: 1.7;
}

/* ===================================
   BLOG SECTION
   =================================== */

.blog-header {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.blog-header h2 {
  color: var(--color-primary);
}

.blog-header p {
  font-size: var(--font-size-lg);
  color: var(--color-gray-600);
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: var(--spacing-xl);
}

.blog-card {
  background-color: var(--color-white);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
  cursor: pointer;
}

.blog-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.blog-image {
  width: 100%;
  height: 240px;
  object-fit: cover;
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
}

.blog-content {
  padding: var(--spacing-lg);
}

.blog-meta {
  display: flex;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
  font-size: var(--font-size-sm);
  color: var(--color-gray-600);
}

.blog-category {
  color: var(--color-accent);
  font-weight: 600;
}

.blog-card h3 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
  font-size: var(--font-size-xl);
}

.blog-excerpt {
  color: var(--color-gray-600);
  margin-bottom: var(--spacing-md);
  line-height: 1.6;
}

.blog-read-more {
  color: var(--color-primary);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  transition: gap var(--transition-base);
}

.blog-card:hover .blog-read-more {
  gap: var(--spacing-sm);
}

/* ===================================
   CONTACT SECTION
   =================================== */

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-2xl);
}

.contact-info h2 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
}

.contact-info p {
  font-size: var(--font-size-lg);
  color: var(--color-gray-600);
  margin-bottom: var(--spacing-xl);
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
}

.contact-icon {
  font-size: var(--font-size-2xl);
  color: var(--color-accent);
  min-width: 40px;
}

.contact-item-content h3 {
  color: var(--color-primary);
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-xs);
}

.contact-item-content p {
  color: var(--color-gray-600);
  margin: 0;
}

.contact-form {
  background-color: var(--color-white);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
}

.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-group label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: 600;
  color: var(--color-gray-800);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.75rem;
  border: 2px solid var(--color-gray-200);
  border-radius: var(--border-radius-md);
  font-family: inherit;
  font-size: var(--font-size-base);
  transition: border-color var(--transition-base);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-primary);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.form-submit {
  width: 100%;
}

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

.footer {
  background-color: var(--color-black);
  color: var(--color-white);
  padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer-section h3 {
  color: var(--color-accent);
  margin-bottom: var(--spacing-md);
}

.footer-section p,
.footer-section a {
  color: var(--color-gray-300);
  margin-bottom: var(--spacing-sm);
}

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

.social-links {
  margin-top: var(--spacing-md);
  display: flex;
  gap: var(--spacing-md);
}

.social-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  color: var(--color-gray-300);
  transition: all var(--transition-base);
  text-decoration: none;
}

.social-link:hover {
  color: var(--color-accent) !important;
  transform: translateY(-2px);
}

.social-link svg {
  stroke-width: 1.5;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: var(--spacing-sm);
}

.footer-bottom {
  border-top: 1px solid var(--color-gray-800);
  padding-top: var(--spacing-lg);
  text-align: center;
  color: var(--color-gray-600);
  font-size: var(--font-size-sm);
}

/* ===================================
   ANIMATIONS
   =================================== */

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  opacity: 0;
  animation: fadeInUp 0.8s ease-out forwards;
}

/* ===================================
   RESPONSIVE DESIGN
   =================================== */

@media (max-width: 768px) {

  /* Typography */
  h1 {
    font-size: var(--font-size-3xl);
  }

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

  /* Navigation */
  .nav-menu {
    position: fixed;
    top: 60px;
    left: -100%;
    flex-direction: column;
    background-color: var(--color-white);
    width: 100%;
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-lg);
    transition: left var(--transition-base);
    align-items: flex-start;
  }

  .nav-menu.active {
    left: 0;
  }

  .mobile-menu-toggle {
    display: flex;
  }

  .mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }

  .mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
  }

  .mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
  }

  /* Sections */
  .section {
    padding: var(--spacing-2xl) 0;
  }

  /* Hero */
  .hero-wrapper {
    flex-direction: column;
    gap: var(--spacing-xl);
  }

  .hero-content {
    flex: none;
    max-width: 100%;
  }

  .hero-image-container {
    flex: none;
    max-width: 100%;
    order: -1;
  }

  .hero-image-placeholder {
    width: 220px;
    height: 300px;
  }

  /* About */
  .about-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }

  .about-image-container {
    position: relative;
    top: 0;
    max-width: 300px;
    margin: 0 auto;
  }

  /* Services */
  .services-grid {
    grid-template-columns: 1fr;
  }

  /* Blog */
  .blog-grid {
    grid-template-columns: 1fr;
  }

  /* Contact */
  .contact-content {
    grid-template-columns: 1fr;
  }

  /* Footer */
  .footer-content {
    grid-template-columns: 1fr;
  }

  /* Hero CTA */
  .hero-cta {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-sm);
  }

  .hero {
    min-height: 80vh;
  }

  .service-card,
  .contact-form {
    padding: var(--spacing-md);
  }
}