/* ============================================
   FLUID STUDIO - Design System
   Hobby Room Planning Website
   ============================================ */

:root {
  /* Colors */
  --color-bg-primary: #1A1B26;
  --color-bg-secondary: #242530;
  --color-accent-primary: #FF007C;
  --color-accent-secondary: #00E5FF;
  --color-accent-tertiary: #787C99;
  --color-text-primary: #E4E6F0;
  --color-text-secondary: #B4B8C8;
  --color-text-muted: #787C99;
  
  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;
  
  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-secondary: 'Space Grotesk', sans-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: 2rem;
  --font-size-4xl: 2.5rem;
  --font-size-5xl: 3rem;
  
  /* Borders & Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;
  
  /* 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);
  --shadow-glow-pink: 0 0 20px rgba(255, 0, 124, 0.3);
  --shadow-glow-teal: 0 0 20px rgba(0, 229, 255, 0.3);
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Layout */
  --container-max-width: 1280px;
  --header-height: 80px;
}

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

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

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

body {
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  overflow-x: hidden;
}

/* Micro-grid background */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    radial-gradient(circle, rgba(120, 124, 153, 0.1) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
  z-index: 0;
  opacity: 0.3;
}

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

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-secondary);
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: var(--space-md);
  color: var(--color-text-primary);
}

h1 {
  font-size: clamp(var(--font-size-3xl), 5vw, var(--font-size-5xl));
}

h2 {
  font-size: clamp(var(--font-size-2xl), 4vw, var(--font-size-4xl));
}

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

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

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

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

/* ============================================
   LAYOUT CONTAINERS
   ============================================ */

.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
  display: flex;
  flex-direction: column;
  align-items: center;
}

section {
  position: relative;
  padding: var(--space-3xl) 0;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* ============================================
   HEADER
   ============================================ */

.site-header {
  position: relative;
  width: 100%;
  padding: var(--space-md) 0;
  background: rgba(26, 27, 38, 0.8);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(120, 124, 153, 0.2);
  z-index: 1000;
}

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

.brand-name {
  font-family: var(--font-secondary);
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-text-primary);
}

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

.nav-link {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: color var(--transition-fast);
}

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

.focus-toggle {
  background: transparent;
  border: 1px solid var(--color-accent-primary);
  color: var(--color-accent-primary);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.focus-toggle:hover {
  background: var(--color-accent-primary);
  color: var(--color-bg-primary);
  box-shadow: var(--shadow-glow-pink);
}

.focus-toggle.active {
  background: var(--color-accent-primary);
  color: var(--color-bg-primary);
}

/* Burger Menu */
.burger-button {
  display: none;
  background: transparent;
  border: 1px solid var(--color-accent-tertiary);
  color: var(--color-text-primary);
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  cursor: pointer;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  z-index:10000001;
  transition: all var(--transition-fast);
  order: 999;
}

.burger-button:hover {
  border-color: var(--color-accent-primary);
  box-shadow: var(--shadow-glow-pink);
}

.burger-line {
  width: 20px;
  height: 2px;
  background: var(--color-text-primary);
  transition: all var(--transition-fast);
}

.burger-button.active .burger-line:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.burger-button.active .burger-line:nth-child(2) {
  opacity: 0;
}

.burger-button.active .burger-line:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

.mobile-menu {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(26, 27, 38, 0.98);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(120, 124, 153, 0.2);
  padding: var(--space-lg);
  z-index: 999;
  transform: translateY(-100%);
  transition: transform var(--transition-base);
}

.mobile-menu.active {
  transform: translateY(0);
}

.mobile-menu-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.mobile-menu-link {
  color: var(--color-text-secondary);
  font-size: var(--font-size-base);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: color var(--transition-fast);
}

.mobile-menu-link:hover {
  color: var(--color-accent-primary);
}

/* ============================================
   HERO BANNERS (Full-Width)
   ============================================ */

.hero-banner {
  position: relative;
  width: 100vw;
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  margin-left: calc(-50vw + 50%);
  margin-right: calc(-50vw + 50%);
  align-self: stretch;
}

.hero-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
  opacity: 0.4;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    135deg,
    rgba(26, 27, 38, 0.85) 0%,
    rgba(36, 37, 48, 0.75) 100%
  );
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 800px;
  padding: var(--space-xl);
}

.hero-title {
  font-size: clamp(var(--font-size-3xl), 6vw, var(--font-size-5xl));
  margin-bottom: var(--space-lg);
  background: linear-gradient(135deg, var(--color-accent-primary), var(--color-accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-description {
  font-size: clamp(var(--font-size-base), 2vw, var(--font-size-xl));
  color: var(--color-text-secondary);
  line-height: 1.8;
}

/* ============================================
   SECTION GRIDS
   ============================================ */

.section-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-xl);
  margin-top: var(--space-xl);
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
}

.section-item {
  background: rgba(36, 37, 48, 0.6);
  border: 1px solid rgba(120, 124, 153, 0.2);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: all var(--transition-base);
  backdrop-filter: blur(10px);
  text-align: center;
}

.section-item:hover {
  border-color: var(--color-accent-primary);
  box-shadow: var(--shadow-glow-pink);
  transform: translateY(-4px);
}

.section-image {
  width: 100%;
  height: 180px;
  object-fit: cover;
  border-radius: var(--radius-md);
  margin-bottom: var(--space-md);
  opacity: 0.9;
}

.section-title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-sm);
  color: var(--color-accent-primary);
  text-align: center;
}

.section-text {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  line-height: 1.7;
  text-align: center;
}

/* ============================================
   CONTACT FORM
   ============================================ */

.contact-form {
  max-width: 600px;
  margin: 0 auto;
  background: rgba(36, 37, 48, 0.6);
  padding: var(--space-xl);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(120, 124, 153, 0.2);
}

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

.form-label {
  display: block;
  margin-bottom: var(--space-sm);
  color: var(--color-text-primary);
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.form-input,
.form-textarea {
  width: 100%;
  padding: var(--space-md);
  background: rgba(26, 27, 38, 0.8);
  border: 1px solid rgba(120, 124, 153, 0.3);
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  transition: all var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-accent-primary);
  box-shadow: 0 0 0 3px rgba(255, 0, 124, 0.1);
}

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

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

.form-checkbox {
  width: 18px;
  height: 18px;
  margin-top: 2px;
  cursor: pointer;
}

.form-checkbox-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.5;
}

.form-submit {
  width: 100%;
  padding: var(--space-md) var(--space-lg);
  background: var(--color-accent-primary);
  color: var(--color-bg-primary);
  border: none;
  border-radius: var(--radius-md);
  font-size: var(--font-size-base);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.form-submit:hover {
  color: black;
  background: var(--color-accent-secondary);
  box-shadow: var(--shadow-glow-teal);
  transform: translateY(-2px);
}

/* ============================================
   MAPS
   ============================================ */

.map-container {
  width: 100%;
  height: 400px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin: var(--space-xl) 0;
  border: 1px solid rgba(120, 124, 153, 0.2);
}

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

/* ============================================
   PRODUCTS
   ============================================ */

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-xl);
  margin-top: var(--space-xl);
}

.product-card {
  background: rgba(36, 37, 48, 0.6);
  border: 1px solid rgba(120, 124, 153, 0.2);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: all var(--transition-base);
}

.product-card:hover {
  border-color: var(--color-accent-secondary);
  box-shadow: var(--shadow-glow-teal);
}

.product-title {
  font-size: var(--font-size-xl);
  color: var(--color-accent-secondary);
  margin-bottom: var(--space-sm);
}

.product-price {
  font-size: var(--font-size-2xl);
  color: var(--color-text-primary);
  font-weight: 700;
  margin: var(--space-md) 0;
}

.product-description {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  line-height: 1.7;
}

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

.site-footer {
  background: rgba(26, 27, 38, 0.9);
  border-top: 1px solid rgba(120, 124, 153, 0.2);
  padding: var(--space-xl) 0;
  margin-top: var(--space-3xl);
}

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

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

.footer-section-title {
  font-size: var(--font-size-sm);
  color: var(--color-accent-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-md);
}

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

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

.footer-link {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  text-align: center;
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(120, 124, 153, 0.2);
  color: var(--color-text-muted);
  font-size: var(--font-size-xs);
}

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

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

.section-title-main {
  text-align: center;
  font-size: clamp(var(--font-size-2xl), 4vw, var(--font-size-4xl));
  margin-bottom: var(--space-xl);
  background: linear-gradient(135deg, var(--color-accent-primary), var(--color-accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  width: 100%;
  max-width: 1200px;
}

.section-intro {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--space-2xl);
  color: var(--color-text-secondary);
  font-size: var(--font-size-lg);
  width: 100%;
}

/* Focus Mode */
body.focus-mode .section-item,
body.focus-mode .section-text,
body.focus-mode .nav-link,
body.focus-mode .footer-link {
  opacity: 0.3;
  transition: opacity var(--transition-base);
}

body.focus-mode .hero-content,
body.focus-mode .section-title-main,
body.focus-mode .hero-title {
  opacity: 1;
}

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

@media (max-width: 1023px) {
  .nav-menu {
    display: none;
  }
  
  .burger-button {
    display: flex;
  }
  
  .mobile-menu {
    display: block;
  }
  
  .hero-banner {
    min-height: 50vh;
  }
  
  .section-grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }
  
  .products-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  :root {
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
  }
  
  section {
    padding: var(--space-xl) 0;
  }
  
  .hero-banner {
    min-height: 40vh;
  }
  
  .contact-form {
    padding: var(--space-lg);
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }
}

@media (max-width: 480px) {
  .header-inner {
    padding: 0 var(--space-sm);
  }
  
  .brand-name {
    font-size: var(--font-size-lg);
  }
  
  .focus-toggle {
    padding: var(--space-xs) var(--space-sm);
    font-size: var(--font-size-xs);
  }
  
  .hero-content {
    padding: var(--space-md);
  }
}

@media (max-width: 320px) {
  .container {
    padding: 0 var(--space-sm);
  }
  
  section {
    padding: var(--space-lg) 0;
  }
}