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

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

:root {
  /* Color Palette - Neutral & Earth Tones */
  --color-primary: #2c2c2c;
  --color-secondary: #5a5a5a;
  --color-accent: #8b7355;
  --color-white: #ffffff;
  --color-off-white: #f8f8f8;
  --color-light-gray: #e8e8e8;
  --color-medium-gray: #9e9e9e;
  --color-dark: #1a1a1a;

  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-weight-light: 300;
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

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

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-medium: 0.4s ease;
  --transition-slow: 0.6s ease;
}

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

body {
  font-family: var(--font-primary);
  font-weight: var(--font-weight-regular);
  line-height: 1.6;
  color: var(--color-primary);
  background-color: var(--color-white);
  overflow-x: hidden;
}

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

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

/* ===================================
   UTILITY CLASSES
   =================================== */

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

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

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: var(--font-weight-light);
  letter-spacing: -0.02em;
  margin-bottom: var(--spacing-sm);
  color: var(--color-primary);
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--color-secondary);
  margin-bottom: var(--spacing-lg);
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.title-line {
  width: 60px;
  height: 2px;
  background-color: var(--color-accent);
  margin: var(--spacing-sm) auto var(--spacing-md);
}

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

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: var(--spacing-sm) 0;
  transition: var(--transition-medium);
  background-color: transparent;
}

.navbar.scrolled {
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.nav-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo a {
  font-size: 1.25rem;
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.05em;
  color: var(--color-white);
  transition: var(--transition-fast);
}

.navbar.scrolled .logo a {
  color: var(--color-primary);
}

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

.nav-link {
  font-size: 0.9375rem;
  font-weight: var(--font-weight-medium);
  color: var(--color-white);
  padding: var(--spacing-xs) var(--spacing-sm);
  position: relative;
  transition: var(--transition-fast);
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background-color: var(--color-accent);
  transform: translateX(-50%);
  transition: var(--transition-fast);
}

.nav-link:hover::after {
  width: 80%;
}

.hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
  gap: 5px;
}

.hamburger span {
  width: 25px;
  height: 2px;
  background-color: var(--color-white);
  transition: var(--transition-fast);
}

.navbar.scrolled .hamburger span {
  background-color: var(--color-primary);
}

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

.hero {
  position: relative;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -2;
}

.hero-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to bottom, rgba(0, 0, 0, 0.3), rgba(0, 0, 0, 0.5));
  z-index: -1;
}

.hero-content {
  text-align: center;
  color: var(--color-white);
  z-index: 1;
  max-width: 800px;
  padding: 0 var(--spacing-md);
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 5rem);
  font-weight: var(--font-weight-light);
  letter-spacing: 0.1em;
  margin-bottom: var(--spacing-md);
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 1s ease forwards;
}

.hero-tagline {
  font-size: clamp(1rem, 2vw, 1.5rem);
  font-weight: var(--font-weight-light);
  letter-spacing: 0.05em;
  margin-bottom: var(--spacing-lg);
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 1s ease 0.3s forwards;
}

.cta-button {
  display: inline-block;
  padding: 1rem 2.5rem;
  font-size: 1rem;
  font-weight: var(--font-weight-medium);
  letter-spacing: 0.05em;
  color: var(--color-white);
  background-color: transparent;
  border: 2px solid var(--color-white);
  cursor: pointer;
  transition: var(--transition-medium);
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 1s ease 0.6s forwards;
}

.cta-button:hover {
  background-color: var(--color-white);
  color: var(--color-primary);
  transform: translateY(-2px);
}

/* Scroll Indicator */
.scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  width: 24px;
  height: 40px;
  border: 2px solid var(--color-white);
  border-radius: 20px;
  opacity: 0.7;
}

.scroll-indicator span {
  position: absolute;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 8px;
  background-color: var(--color-white);
  border-radius: 2px;
  animation: scrollDown 2s infinite;
}

@keyframes scrollDown {
  0%, 100% {
    top: 8px;
    opacity: 1;
  }
  50% {
    top: 20px;
    opacity: 0.5;
  }
}

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

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

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

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
  align-items: center;
}

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

.about-text {
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--color-secondary);
  margin-bottom: var(--spacing-md);
}

.about-image {
  position: relative;
  overflow: hidden;
}

.about-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.about-image:hover img {
  transform: scale(1.05);
}

.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--color-light-gray);
}

.stat-item {
  display: flex;
  flex-direction: column;
  text-align: center;
}

.stat-number {
  font-size: 2.5rem;
  font-weight: var(--font-weight-light);
  color: var(--color-accent);
  margin-bottom: var(--spacing-xs);
}

.stat-label {
  font-size: 0.875rem;
  color: var(--color-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ===================================
   PORTFOLIO SECTION
   =================================== */

.portfolio {
  background-color: var(--color-off-white);
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--spacing-md);
}

.portfolio-item {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  cursor: pointer;
}

.portfolio-image {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

.portfolio-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.portfolio-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to bottom, rgba(0, 0, 0, 0) 0%, rgba(0, 0, 0, 0.8) 100%);
  display: flex;
  align-items: flex-end;
  padding: var(--spacing-md);
  opacity: 0;
  transition: opacity var(--transition-medium);
}

.portfolio-item:hover .portfolio-overlay {
  opacity: 1;
}

.portfolio-item:hover .portfolio-image img {
  transform: scale(1.1);
}

.portfolio-info h3 {
  font-size: 1.5rem;
  font-weight: var(--font-weight-medium);
  color: var(--color-white);
  margin-bottom: var(--spacing-xs);
}

.portfolio-info p {
  font-size: 0.9375rem;
  color: var(--color-light-gray);
  letter-spacing: 0.05em;
}

/* ===================================
   CTA SECTION
   =================================== */

.cta-section {
  background-color: var(--color-primary);
  color: var(--color-white);
  text-align: center;
}

.cta-content {
  max-width: 700px;
  margin: 0 auto;
}

.cta-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: var(--font-weight-light);
  margin-bottom: var(--spacing-sm);
}

.cta-subtitle {
  font-size: 1.125rem;
  color: var(--color-light-gray);
  margin-bottom: var(--spacing-lg);
}

.cta-buttons {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
}

.cta-button-primary {
  padding: 1rem 2.5rem;
  font-size: 1rem;
  font-weight: var(--font-weight-medium);
  letter-spacing: 0.05em;
  color: var(--color-primary);
  background-color: var(--color-white);
  border: 2px solid var(--color-white);
  transition: var(--transition-medium);
}

.cta-button-primary:hover {
  background-color: transparent;
  color: var(--color-white);
  transform: translateY(-2px);
}

.cta-button-secondary {
  padding: 1rem 2.5rem;
  font-size: 1rem;
  font-weight: var(--font-weight-medium);
  letter-spacing: 0.05em;
  color: var(--color-white);
  background-color: transparent;
  border: 2px solid var(--color-white);
  transition: var(--transition-medium);
}

.cta-button-secondary:hover {
  background-color: var(--color-white);
  color: var(--color-primary);
  transform: translateY(-2px);
}

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

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

.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}

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

.contact-item h3 {
  font-size: 1rem;
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-primary);
  margin-bottom: var(--spacing-xs);
}

.contact-item p {
  font-size: 1rem;
  color: var(--color-secondary);
  line-height: 1.8;
}

.contact-item a {
  color: var(--color-secondary);
  transition: var(--transition-fast);
}

.contact-item a:hover {
  color: var(--color-accent);
}

/* Contact Form */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.form-group label {
  font-size: 0.875rem;
  font-weight: var(--font-weight-medium);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-primary);
}

.form-group input,
.form-group textarea {
  padding: 1rem;
  font-family: var(--font-primary);
  font-size: 1rem;
  color: var(--color-primary);
  background-color: var(--color-off-white);
  border: 1px solid var(--color-light-gray);
  transition: var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  background-color: var(--color-white);
}

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

.error-message {
  font-size: 0.875rem;
  color: #d32f2f;
  display: none;
  margin-top: var(--spacing-xs);
}

.form-group.error input,
.form-group.error textarea {
  border-color: #d32f2f;
}

.form-group.error .error-message {
  display: block;
}

.submit-button {
  padding: 1rem 2.5rem;
  font-size: 1rem;
  font-weight: var(--font-weight-medium);
  letter-spacing: 0.05em;
  color: var(--color-white);
  background-color: var(--color-primary);
  border: 2px solid var(--color-primary);
  cursor: pointer;
  transition: var(--transition-medium);
  align-self: flex-start;
}

.submit-button:hover {
  background-color: transparent;
  color: var(--color-primary);
  transform: translateY(-2px);
}

.submit-button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.form-success {
  display: none;
  padding: var(--spacing-md);
  background-color: #4caf50;
  color: var(--color-white);
  border-radius: 4px;
  text-align: center;
}

.form-success.show {
  display: block;
}

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

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

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-logo h3 {
  font-size: 1.25rem;
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.05em;
  margin-bottom: var(--spacing-xs);
}

.footer-logo p {
  font-size: 0.9375rem;
  color: var(--color-medium-gray);
}

.footer-links {
  display: flex;
  gap: var(--spacing-md);
}

.footer-links a {
  font-size: 0.9375rem;
  color: var(--color-medium-gray);
  transition: var(--transition-fast);
}

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

.footer-bottom {
  text-align: center;
}

.footer-bottom p {
  font-size: 0.875rem;
  color: var(--color-medium-gray);
}

/* ===================================
   SCROLL REVEAL ANIMATIONS
   =================================== */

.scroll-reveal {
  opacity: 0;
  transform: translateY(50px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.scroll-reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

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

@media (max-width: 768px) {
  /* Navigation */
  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 70%;
    height: 100vh;
    background-color: var(--color-white);
    flex-direction: column;
    padding: var(--spacing-xl) var(--spacing-md);
    box-shadow: -2px 0 20px rgba(0, 0, 0, 0.1);
    transition: var(--transition-medium);
  }

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

  .nav-link {
    color: var(--color-primary);
    padding: var(--spacing-sm) 0;
  }

  .hamburger {
    display: flex;
    z-index: 1001;
  }

  /* About Section */
  .about-grid {
    grid-template-columns: 1fr;
  }

  .about-content {
    padding-right: 0;
  }

  .stats {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }

  /* Portfolio Grid */
  .portfolio-grid {
    grid-template-columns: 1fr;
  }

  /* CTA Buttons */
  .cta-buttons {
    flex-direction: column;
    align-items: center;
  }

  .cta-button-primary,
  .cta-button-secondary {
    width: 100%;
    max-width: 300px;
    text-align: center;
  }

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

  /* Footer */
  .footer-content {
    flex-direction: column;
    gap: var(--spacing-md);
    text-align: center;
  }

  .footer-links {
    justify-content: center;
    flex-wrap: wrap;
  }

  /* Section Padding */
  .section-padding {
    padding: var(--spacing-lg) 0;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 2rem;
  }

  .section-title {
    font-size: 1.75rem;
  }

  .portfolio-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-sm);
  }
}