/* ============================================
   CSS Variables - Design System
   ============================================ */
:root {
  /* Colors */
  --color-indigo: #2E4057;
  --color-canvas: #EFE9DB;
  --color-terracotta: #C36464;
  --color-silver: #8E8E8E;
  --color-white: #FFFFFF;
  --color-black: #1A1A1A;
  
  /* Typography */
  --font-primary: 'Poppins', sans-serif;
  --font-accent: 'Dancing Script', cursive;
  
  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-xxl: 4rem;
  
  /* Borders & Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --border-width: 2px;
  
  /* 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);
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Layout */
  --max-width: 1200px;
  --header-height: 80px;
}

/* ============================================
   Reset & Base Styles
   ============================================ */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

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

/* ============================================
   Typography
   ============================================ */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--space-md);
  color: var(--color-indigo);
}

h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
}

h2 {
  font-size: clamp(1.5rem, 4vw, 2.5rem);
}

h3 {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
}

.accent-text {
  font-family: var(--font-accent);
  font-weight: 400;
  color: var(--color-terracotta);
}

p {
  margin-bottom: var(--space-md);
}

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

a:hover {
  color: var(--color-terracotta);
}

/* ============================================
   Header Styles
   ============================================ */
.header-wrapper {
  background-color: var(--color-white);
  border-bottom: var(--border-width) solid var(--color-silver);
  position: relative;
  z-index: 1000;
}

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

.brand-name {
  font-size: clamp(1rem, 2vw, 1.75rem);
  font-weight: 700;
  color: var(--color-indigo);
  letter-spacing: 0.05em;
}

.nav-menu {
  display: flex;
  list-style: none;
  align-items: center;
}

.nav-menu li {
  position: relative;
}

.nav-menu a {
  font-weight: 500;
  padding: var(--space-sm) var(--space-md);
  display: block;
}

.burger-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
  color: var(--color-indigo);
  font-size: 1.5rem;
  order: 999;
  z-index: 1001;
  position: relative;
}

.burger-toggle:hover {
  color: var(--color-terracotta);
}

/* ============================================
   Main Content
   ============================================ */
main {
  min-height: calc(100vh - 200px);
}

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

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

.section-title {
  text-align: center;
  margin-bottom: var(--space-xl);
  position: relative;
}

.section-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 3px;
  background-color: var(--color-terracotta);
  margin: var(--space-md) auto 0;
}

/* ============================================
   Hero Section
   ============================================ */
.hero-section {
  position: relative;
  padding: var(--space-xxl) var(--space-lg);
  text-align: center;
  background: linear-gradient(135deg, var(--color-canvas) 0%, rgba(46, 64, 87, 0.05) 100%);
  overflow: hidden;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(239, 233, 219, 0.75);
  background-image: repeating-linear-gradient(
    45deg,
    transparent,
    transparent 10px,
    rgba(195, 100, 100, 0.03) 10px,
    rgba(195, 100, 100, 0.03) 20px
  );
  pointer-events: none;
  z-index: 0;
}

.hero-bg-image {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  z-index: -1;
  opacity: 0.4;
}

.hero-home {
  background-image: url('../photos/freepik__the-style-is-candid-image-photography-with-natural__81847.webp');
}

.hero-glossary {
  background-image: url('../photos/freepik__35mm-film-photography-stepbystep-hand-sewing-repai__81842.webp');
}

.hero-anatomy {
  background-image: url('../photos/freepik__the-style-is-candid-image-photography-with-natural__81850.webp');
}

.hero-logbook {
  background-image: url('../photos/freepik__35mm-film-photography-upcycling-vintage-dresses-in__81851.webp');
}

.hero-contact {
  background-image: url('../photos/freepik__35mm-film-photography-techniques-for-darning-and-i__81845.webp');
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
  margin: 0 auto;
}

.hero-title {
  margin-bottom: var(--space-lg);
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--color-silver);
  margin-bottom: var(--space-xl);
}

/* ============================================
   Image Styles
   ============================================ */
.image-wrapper {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  margin-bottom: var(--space-lg);
}

.image-wrapper img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform var(--transition-slow);
}

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

.asymmetrical-image {
  transform: rotate(-1deg);
  border: var(--border-width) solid var(--color-silver);
  padding: var(--space-sm);
  background-color: var(--color-white);
}

.asymmetrical-image-alt {
  transform: rotate(1deg);
  border: var(--border-width) solid var(--color-silver);
  padding: var(--space-sm);
  background-color: var(--color-white);
}

/* ============================================
   Grid Layouts
   ============================================ */
.grid-two {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
}

.grid-three {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

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

/* ============================================
   Card Styles
   ============================================ */
.card {
  background-color: var(--color-white);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  border: 1px solid rgba(142, 142, 142, 0.2);
}

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

.card-image {
  margin-bottom: var(--space-md);
}

.card-title {
  font-size: clamp(1.1rem, 2vw, 1.3rem);
  margin-bottom: var(--space-sm);
}

.card-text {
  color: var(--color-silver);
  font-size: 0.95rem;
}

/* ============================================
   Gallery Styles
   ============================================ */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.gallery-item {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-md);
  aspect-ratio: 4 / 3;
}

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

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

.gallery-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.7), transparent);
  padding: var(--space-lg);
  color: var(--color-white);
  transform: translateY(100%);
  transition: transform var(--transition-base);
}

.gallery-item:hover .gallery-overlay {
  transform: translateY(0);
}

/* ============================================
   Before/After Slider
   ============================================ */
.before-after-container {
  position: relative;
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  cursor: crosshair;
}

.before-after-wrapper {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
}

.before-image,
.after-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.after-image {
  clip-path: inset(0 50% 0 0);
  transition: clip-path var(--transition-base);
  filter: brightness(1.1);
}

.before-after-container:hover .after-image {
  filter: brightness(1.1) drop-shadow(0 0 20px rgba(195, 100, 100, 0.5));
}

.slider-handle {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 4px;
  background-color: var(--color-terracotta);
  transform: translateX(-50%);
  cursor: ew-resize;
}

.slider-handle::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: var(--color-terracotta);
  border: 3px solid var(--color-white);
  box-shadow: var(--shadow-md);
}

/* ============================================
   Form Styles
   ============================================ */
.form-container {
  max-width: 600px;
  margin: 0 auto;
  background-color: var(--color-white);
  padding: var(--space-xl);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

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

.form-label {
  display: block;
  margin-bottom: var(--space-sm);
  font-weight: 500;
  color: var(--color-indigo);
}

.form-input,
.form-textarea {
  width: 100%;
  padding: var(--space-md);
  border: var(--border-width) solid var(--color-silver);
  border-radius: var(--radius-sm);
  font-family: var(--font-primary);
  font-size: 1rem;
  transition: border-color var(--transition-base);
  background-color: var(--color-canvas);
}

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

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

.checkbox-group {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
}

.checkbox-input {
  margin-top: 4px;
  cursor: pointer;
}

.checkbox-label {
  font-size: 0.9rem;
  color: var(--color-silver);
}

.btn {
  display: inline-block;
  padding: var(--space-md) var(--space-xl);
  background-color: var(--color-terracotta);
  color: var(--color-white);
  border: none;
  border-radius: var(--radius-sm);
  font-family: var(--font-primary);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color var(--transition-base), transform var(--transition-base);
  text-align: center;
    margin-top: 10px;
}

.btn:hover {
    color: white;
  background-color: #a85555;
  transform: translateY(-2px);
}

.btn:active {
  transform: translateY(0);
}

.btn-full {
  width: 100%;
}

/* ============================================
   Footer Styles
   ============================================ */
.footer-wrapper {
  background-color: var(--color-indigo);
  color: var(--color-white);
  padding: var(--space-xl) var(--space-lg);
  margin-top: var(--space-xxl);
}

.footer-container {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-lg);
}

.footer-section h3 {
  color: var(--color-white);
  margin-bottom: var(--space-md);
  font-size: 1.1rem;
}

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

.footer-menu li {
  margin-bottom: var(--space-sm);
}

.footer-menu a {
  color: rgba(255, 255, 255, 0.8);
  transition: color var(--transition-base);
}

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

.footer-text {
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: var(--space-sm);
}

.footer-link {
  color: rgba(255, 255, 255, 0.8);
}

.footer-bottom {
  text-align: center;
  margin-top: var(--space-lg);
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9rem;
}

/* ============================================
   Privacy Popup
   ============================================ */
.privacy-popup {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: var(--color-indigo);
  color: var(--color-white);
  padding: var(--space-lg);
  box-shadow: 0 -4px 8px rgba(0, 0, 0, 0.2);
  z-index: 10000;
  transform: translateY(100%);
  transition: transform var(--transition-base);
}

.privacy-popup.show {
  transform: translateY(0);
}

.privacy-popup-content {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.privacy-popup-text {
  flex: 1;
  min-width: 250px;
}

.privacy-popup-text a {
  color: var(--color-terracotta);
  text-decoration: underline;
}

.privacy-popup-buttons {
  display: flex;
  gap: var(--space-md);
}

.btn-accept,
.btn-decline {
  padding: var(--space-sm) var(--space-lg);
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-weight: 600;
  transition: opacity var(--transition-base);
}

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

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

.btn-accept:hover,
.btn-decline:hover {
  opacity: 0.8;
}

/* ============================================
   Map Container
   ============================================ */
.map-container {
  width: 100%;
  height: 400px;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  margin-bottom: var(--space-xl);
}

.map-container iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

/* ============================================
   Utility Classes
   ============================================ */
.text-center {
  text-align: center;
}

.text-left {
  text-align: left;
}

.mb-sm {
  margin-bottom: var(--space-sm);
}

.mb-md {
  margin-bottom: var(--space-md);
}

.mb-lg {
  margin-bottom: var(--space-lg);
}

.mb-xl {
  margin-bottom: var(--space-xl);
}

.mt-sm {
  margin-top: var(--space-sm);
}

.mt-md {
  margin-top: var(--space-md);
}

.mt-lg {
  margin-top: var(--space-lg);
}

.mt-xl {
  margin-top: var(--space-xl);
}

.highlight {
  color: var(--color-terracotta);
  font-weight: 600;
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 1023px) {
  .nav-menu {
    position: fixed;
    top: 43px;
    left: 0;
    right: 0;
    background-color: var(--color-white);
    flex-direction: column;
    padding: var(--space-lg);
    box-shadow: var(--shadow-md);
    transform: translateX(-100%);
    transition: transform var(--transition-base);
    z-index: 999;
    gap: 0;
  }

  .nav-menu.active {
    transform: translateX(0);
  }

  .nav-menu li {
    width: 100%;
    border-bottom: 1px solid rgba(142, 142, 142, 0.2);
  }

  .nav-menu a {
    padding: var(--space-md);
    display: block;
  }

  .burger-toggle {
    display: block;
  }
}

@media (max-width: 768px) {

  .grid-two,
  .grid-three,
  .grid-four {
    grid-template-columns: 1fr;
  }

  .hero-section {
    padding: var(--space-xl) var(--space-md);
  }

  .container {
    padding: var(--space-md);
  }

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

  .form-container {
    padding: var(--space-lg);
  }

  .privacy-popup-content {
    flex-direction: column;
    text-align: center;
  }

  .privacy-popup-buttons {
    width: 100%;
    justify-content: center;
  }

  .btn-accept,
  .btn-decline {
    flex: 1;
  }
}

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

  .header-container {
    padding: var(--space-sm) var(--space-md);
  }

  .hero-section {
    padding: var(--space-lg) var(--space-sm);
  }

  .container {
    padding: var(--space-sm);
  }

  .card {
    padding: var(--space-md);
  }

  .form-container {
    padding: var(--space-md);
  }
}

@media (max-width: 320px) {
  html {
    font-size: 12px;
  }

  .header-container {
    padding: var(--space-xs) var(--space-sm);
  }

  .container {
    padding: var(--space-xs);
  }
}

/* ============================================
   Page-Specific Styles
   ============================================ */
.technique-card {
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-base);
}

.technique-card:hover {
  transform: translateY(-4px);
}

.technique-image {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.technique-content {
  padding: var(--space-lg);
}

.technique-name {
  font-size: 1.5rem;
  color: var(--color-indigo);
  margin-bottom: var(--space-sm);
}

.technique-description {
  color: var(--color-silver);
  line-height: 1.7;
}

.case-study {
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  margin-bottom: var(--space-xl);
  box-shadow: var(--shadow-sm);
  border-left: 4px solid var(--color-terracotta);
}

.case-study-title {
  font-size: 1.75rem;
  margin-bottom: var(--space-md);
}

.case-study-meta {
  color: var(--color-silver);
  font-size: 0.9rem;
  margin-bottom: var(--space-lg);
  font-style: italic;
}

.case-study-image {
  width: 100%;
  max-width: 600px;
  margin: var(--space-lg) auto;
  display: block;
  border-radius: var(--radius-md);
}

.anatomy-guide {
  background-color: var(--color-white);
  padding: var(--space-xl);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-xl);
  box-shadow: var(--shadow-sm);
}

.anatomy-item {
  display: flex;
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
  align-items: flex-start;
}

.anatomy-item:last-child {
  margin-bottom: 0;
}

.anatomy-number {
  flex-shrink: 0;
  width: 50px;
  height: 50px;
  background-color: var(--color-terracotta);
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.25rem;
}

.anatomy-content {
  flex: 1;
}

.thank-you-message {
  text-align: center;
  padding: var(--space-xxl) var(--space-lg);
  max-width: 600px;
  margin: 0 auto;
}

.thank-you-icon {
  font-size: 4rem;
  color: var(--color-terracotta);
  margin-bottom: var(--space-lg);
}

.error-page {
  text-align: center;
  padding: var(--space-xxl) var(--space-lg);
  min-height: 60vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.error-code {
  font-size: 6rem;
  font-weight: 700;
  color: var(--color-terracotta);
  margin-bottom: var(--space-md);
}

.error-message {
  font-size: 1.5rem;
  color: var(--color-indigo);
  margin-bottom: var(--space-xl);
}

.case-study ul {
  margin-left: var(--space-lg);
  margin-bottom: var(--space-md);
  padding-left: var(--space-md);
}

.case-study li {
  margin-bottom: var(--space-sm);
  color: var(--color-silver);
}

/* Tactile texture overlay */
.texture-overlay {
  position: relative;
}

.texture-overlay::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 2px,
      rgba(195, 100, 100, 0.02) 2px,
      rgba(195, 100, 100, 0.02) 4px
    ),
    repeating-linear-gradient(
      90deg,
      transparent,
      transparent 2px,
      rgba(46, 64, 87, 0.02) 2px,
      rgba(46, 64, 87, 0.02) 4px
    );
  pointer-events: none;
  z-index: 1;
}

.section-alt-bg {
  background-color: rgba(46, 64, 87, 0.03);
}

.icon-large {
  font-size: 2.5rem;
  color: var(--color-terracotta);
  margin-bottom: var(--space-md);
}

.icon-inline {
  color: var(--color-terracotta);
  margin-right: var(--space-sm);
}

.btn-inline {
  margin-top: var(--space-md);
}