/* Acoustic Minimalist — Sleep Environment Optimization */

:root {
  --color-bg: #E8ECEF;
  --color-surface: #FFFFFF;
  --color-accent: #FF9F43;
  --color-slate: #2C3E50;
  --color-text: #1A252F;
  --color-border: #D1D8E0;
  --color-overlay: rgba(26, 37, 47, 0.72);
  --font-primary: 'Inter', 'Helvetica Neue', sans-serif;
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 5rem;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --shadow-sm: 0 2px 8px rgba(44, 62, 80, 0.08);
  --shadow-md: 0 8px 24px rgba(44, 62, 80, 0.12);
  --transition-fast: 0.3s ease;
  --max-width: 72rem;
  --header-height: 4.5rem;
}

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

html {
  font-size: 100%;
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  font-family: var(--font-primary);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.65;
  min-height: 100vh;
  display: flex;
  overflow-x: hidden;
  flex-direction: column;
}

body.menu-open {
  overflow: hidden;
}

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

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

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

ul {
  list-style: none;
}

h1, h2, h3, h4 {
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.25;
  color: var(--color-text);
}

h1 { font-size: clamp(1.75rem, 4vw, 2.75rem); }
h2 { font-size: clamp(1.35rem, 3vw, 2rem); }
h3 { font-size: clamp(1.1rem, 2vw, 1.35rem); }

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

/* ── Header ── */

.site-header {
  position: relative;
  z-index: 100;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

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

.brand-text {
  font-size: clamp(0.95rem, 2.5vw, 1.15rem);
  font-weight: 700;
  color: var(--color-slate);
  letter-spacing: -0.03em;
  white-space: nowrap;
}

.nav-desktop {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.nav-desktop a {
  font-size: 0.875rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.burger-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 2.5rem;
  height: 2.5rem;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  padding: var(--space-sm);
  transition: border-color var(--transition-fast), background var(--transition-fast);
}

.burger-toggle:hover {
  border-color: var(--color-accent);
  background: var(--color-bg);
}

.burger-line {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-slate);
  border-radius: 2px;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.burger-toggle.is-active .burger-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

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

.burger-toggle.is-active .burger-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

@media (max-width: 1023px) {
  .nav-desktop {
    display: none;
  }

  .burger-toggle {
    display: flex;
  }
}

/* ── Mobile Nav Overlay ── */

.nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(26, 37, 47, 0.5);
  z-index: 200;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-fast), visibility var(--transition-fast);
}

.nav-overlay.is-open {
  opacity: 1;
  visibility: visible;
}

.nav-drawer {
  position: fixed;
  top: 0;
  right: 0;
  width: min(20rem, 85vw);
  height: 100%;
  background: var(--color-surface);
  z-index: 210;
  transform: translateX(100%);
  transition: transform var(--transition-fast);
  display: flex;
  flex-direction: column;
  padding: var(--space-xl) var(--space-lg);
  border-left: 1px solid var(--color-border);
}

.nav-drawer.is-open {
  transform: translateX(0);
}

.nav-drawer-close {
  align-self: flex-end;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--color-slate);
  margin-bottom: var(--space-lg);
}

.nav-drawer-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.nav-drawer-list a {
  font-size: 1rem;
  font-weight: 500;
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--color-border);
}

/* ── Hero Banner ── */

.hero-banner {
  position: relative;
  width: 100vw;
  margin-left: calc(50% - 50vw);
  min-height: clamp(18rem, 50vh, 32rem);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-banner-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
}

.hero-banner-overlay {
  position: absolute;
  inset: 0;
  background: var(--color-overlay);
  z-index: 1;
}

.hero-banner-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 42rem;
  padding: var(--space-xl) var(--space-lg);
  color: var(--color-surface);
}

.hero-banner-content h1 {
  color: var(--color-surface);
  margin-bottom: var(--space-md);
}

.hero-banner-content p {
  font-size: clamp(0.95rem, 2vw, 1.1rem);
  opacity: 0.92;
  margin-bottom: var(--space-lg);
}

/* ── Buttons ── */

.btn-primary {
  display: inline-block;
  padding: 0.75rem 1.75rem;
  background: var(--color-accent);
  color: var(--color-text);
  font-weight: 600;
  font-size: 0.875rem;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background var(--transition-fast), transform var(--transition-fast);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.btn-primary:hover,
.btn-primary:focus {
  background: #e88a2e;
  color: var(--color-text);
  transform: translateY(-1px);
}

.btn-secondary {
  display: inline-block;
  padding: 0.75rem 1.75rem;
  background: transparent;
  color: var(--color-slate);
  font-weight: 600;
  font-size: 0.875rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: border-color var(--transition-fast), color var(--transition-fast);
}

.btn-secondary:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.hero-banner-content .btn-primary {
  color: var(--color-text);
}

/* ── Main Layout ── */

main {
  flex: 1;
}

.section-wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-2xl) var(--space-lg);
}

.section-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
}

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

.section-intro {
  max-width: 38rem;
  margin: 0 auto var(--space-xl);
  text-align: center;
  color: var(--color-slate);
}

/* ── Grid Sections ── */

.grid-two {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: center;
}

.grid-three {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.grid-asymmetric {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: var(--space-xl);
  align-items: start;
}

@media (max-width: 768px) {
  .grid-two,
  .grid-three,
  .grid-asymmetric {
    grid-template-columns: 1fr;
  }
}

/* ── Cards ── */

.data-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-fast);
}

.data-card:hover {
  box-shadow: var(--shadow-md);
}

.data-card-icon {
  font-size: 1.5rem;
  color: var(--color-accent);
  margin-bottom: var(--space-md);
}

.data-card h3 {
  margin-bottom: var(--space-sm);
}

/* ── Image Blocks ── */

.visual-frame {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
  aspect-ratio: 4 / 3;
  max-height: 16rem;
}

.visual-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.section-banner {
  position: relative;
  width: 100vw;
  margin-left: calc(50% - 50vw);
  min-height: clamp(12rem, 30vh, 20rem);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.section-banner-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
}

.section-banner-overlay {
  position: absolute;
  inset: 0;
  background: var(--color-overlay);
  z-index: 1;
}

.section-banner-text {
  position: relative;
  z-index: 2;
  text-align: center;
  color: var(--color-surface);
  padding: var(--space-xl) var(--space-lg);
  max-width: 36rem;
}

.section-banner-text h2 {
  color: var(--color-surface);
}

/* ── Simulator ── */

.simulator-panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-md);
}

.simulator-canvas-wrap {
  position: relative;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  margin-bottom: var(--space-lg);
  min-height: 10rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.simulator-score-value {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
}

.simulator-score-label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-slate);
  margin-top: var(--space-sm);
}

.simulator-score-value.score-high { color: #2C6E49; }
.simulator-score-value.score-mid { color: var(--color-accent); }
.simulator-score-value.score-low { color: #C0392B; }

.gear-icon-only {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  color: var(--color-accent);
}

.simulator-controls {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

@media (max-width: 768px) {
  .simulator-controls {
    grid-template-columns: 1fr;
  }
}

.slider-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: var(--space-sm);
  color: var(--color-slate);
}

.slider-group input[type="range"] {
  width: 100%;
  accent-color: var(--color-accent);
}

.slider-value {
  font-size: 0.85rem;
  color: var(--color-accent);
  font-weight: 600;
  margin-top: var(--space-xs);
}

/* ── Dashboard (Analyzer) ── */

.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

@media (max-width: 900px) {
  .dashboard-grid {
    grid-template-columns: 1fr;
  }
}

.toggle-block {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
}

.toggle-block-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-md);
}

.toggle-switch {
  position: relative;
  width: 2.75rem;
  height: 1.5rem;
  background: var(--color-border);
  border-radius: 1rem;
  cursor: pointer;
  border: none;
  transition: background var(--transition-fast);
}

.toggle-switch.is-on {
  background: var(--color-accent);
}

.toggle-knob {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 1.25rem;
  height: 1.25rem;
  background: var(--color-surface);
  border-radius: 50%;
  transition: transform var(--transition-fast);
}

.toggle-switch.is-on .toggle-knob {
  transform: translateX(1.25rem);
}

.diagnostic-result {
  background: var(--color-slate);
  color: var(--color-surface);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  text-align: center;
  margin-top: var(--space-xl);
}

.diagnostic-result h3 {
  color: var(--color-surface);
  margin-bottom: var(--space-md);
}

.diagnostic-bar {
  display: flex;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.diagnostic-bar-segment {
  flex: 1;
  height: 0.5rem;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.2);
  transition: background var(--transition-fast);
}

.diagnostic-bar-segment.is-active {
  background: var(--color-accent);
}

/* ── Blueprint Spec Table ── */

.spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.spec-table th,
.spec-table td {
  padding: var(--space-md);
  border: 1px solid var(--color-border);
  text-align: left;
}

.spec-table th {
  background: var(--color-slate);
  color: var(--color-surface);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.spec-table tr:nth-child(even) td {
  background: var(--color-bg);
}

.spec-layer {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  margin-bottom: var(--space-lg);
}

.spec-layer-header {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--color-border);
}

.spec-layer-icon {
  width: 2.5rem;
  height: 2.5rem;
  background: var(--color-bg);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
  font-size: 1.1rem;
}

/* ── Product Cards ── */

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

@media (max-width: 900px) {
  .product-grid {
    grid-template-columns: 1fr;
  }
}

.product-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.product-card-body {
  padding: var(--space-lg);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.product-price {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-top: auto;
  padding-top: var(--space-md);
}

.product-spec {
  font-size: 0.8rem;
  color: var(--color-slate);
  background: var(--color-bg);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  margin-top: var(--space-sm);
  display: inline-block;
}

.gear-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  text-align: center;
}

.gear-card-visual {
  aspect-ratio: 1;
  max-height: 10rem;
  margin: 0 auto var(--space-md);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-bg);
}

.gear-card-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.gear-spec-tag {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* ── Contact ── */

.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
}

@media (max-width: 768px) {
  .contact-layout {
    grid-template-columns: 1fr;
  }
}

.contact-form {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
}

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

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: var(--space-xs);
  color: var(--color-slate);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.75rem var(--space-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-family: var(--font-primary);
  font-size: 0.95rem;
  background: var(--color-bg);
  transition: border-color var(--transition-fast);
}

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

.form-group textarea {
  min-height: 8rem;
  resize: vertical;
}

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

.consent-group input {
  margin-top: 0.25rem;
  accent-color: var(--color-accent);
}

.consent-group label {
  font-size: 0.85rem;
  color: var(--color-slate);
}

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

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

.info-item i {
  color: var(--color-accent);
  font-size: 1.1rem;
  margin-top: 0.15rem;
}

.map-embed {
  width: 100%;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 16 / 9;
}

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

/* ── Thank You / 404 ── */

.status-page {
  text-align: center;
  padding: var(--space-2xl) var(--space-lg);
  max-width: 36rem;
  margin: 0 auto;
}

.status-icon {
  font-size: 3rem;
  color: var(--color-accent);
  margin-bottom: var(--space-lg);
}

/* ── Legal Pages ── */

.legal-content {
  max-width: 48rem;
  margin: 0 auto;
  padding: var(--space-2xl) var(--space-lg);
}

.legal-content h1 {
  margin-bottom: var(--space-md);
}

.legal-content h2 {
  margin-top: var(--space-xl);
  margin-bottom: var(--space-md);
  font-size: 1.15rem;
}

.legal-content p,
.legal-content li {
  font-size: 0.95rem;
  color: var(--color-slate);
}

.legal-content ul {
  list-style: disc;
  padding-left: var(--space-lg);
  margin-bottom: var(--space-md);
}

.date {
  font-size: 0.85rem;
  color: var(--color-slate);
  margin-bottom: var(--space-xl);
}

/* ── Footer ── */

.site-footer {
  background: var(--color-slate);
  color: rgba(255, 255, 255, 0.85);
  padding: var(--space-xl) var(--space-lg);
  margin-top: auto;
}

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

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md) var(--space-lg);
}

.footer-nav a {
  color: rgba(255, 255, 255, 0.75);
  font-size: 0.8rem;
}

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

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md) var(--space-lg);
  width: 100%;
  padding-top: var(--space-md);
  border-top: 1px solid rgba(255, 255, 255, 0.15);
}

.footer-legal a {
  color: rgba(255, 255, 255, 0.55);
  font-size: 0.75rem;
}

.footer-copy {
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.5);
  width: 100%;
  text-align: center;
  padding-top: var(--space-md);
}

/* ── Privacy Popup ── */

.privacy-popup {
  position: fixed;
  bottom: var(--space-lg);
  left: var(--space-lg);
  right: var(--space-lg);
  max-width: 28rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--shadow-md);
  z-index: 300;
  transform: translateY(120%);
  transition: transform var(--transition-fast);
}

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

.privacy-popup p {
  font-size: 0.85rem;
  margin-bottom: var(--space-md);
}

.privacy-popup-actions {
  display: flex;
  gap: var(--space-sm);
}

.privacy-popup-actions .btn-primary,
.privacy-popup-actions .btn-secondary {
  font-size: 0.8rem;
  padding: 0.5rem 1rem;
}

/* ── Utility ── */

.text-center { text-align: center; }
.mt-lg { margin-top: var(--space-lg); }
.mb-lg { margin-bottom: var(--space-lg); }

.divider-line {
  width: 3rem;
  height: 2px;
  background: var(--color-accent);
  margin: var(--space-md) auto;
}

.metric-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.9rem;
}

.metric-row:last-child {
  border-bottom: none;
}

.metric-value {
  font-weight: 600;
  color: var(--color-accent);
}

.spec-tabs {
  display: flex;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
  flex-wrap: wrap;
}

.spec-tab-btn {
  padding: 0.6rem 1.25rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: background var(--transition-fast), border-color var(--transition-fast);
  color: var(--color-slate);
}

.spec-tab-btn.is-active {
  background: var(--color-slate);
  color: var(--color-surface);
  border-color: var(--color-slate);
}

.spec-tab-panel {
  display: none;
}

.spec-tab-panel.is-active {
  display: block;
}

@media (max-width: 480px) {
  .section-wrap {
    padding: var(--space-xl) var(--space-md);
  }

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

  .privacy-popup {
    left: var(--space-md);
    right: var(--space-md);
  }
}