/* index.css - Farbraum & Kante Design System */

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

:root {
  /* Dynamic OKLCH colors, tinting neutrals toward raw clay */
  --theme-bg: oklch(96% 0.008 80);        /* Clay-tinted soft white */
  --theme-text: oklch(20% 0.015 80);       /* Earth-charcoal black */
  --theme-accent: oklch(62% 0.06 60);     /* Natural terracotta clay */
  --theme-panel: oklch(98.5% 0.005 80);   /* Pure off-white */
  --theme-border: oklch(20% 0.015 80 / 10%);
  --theme-border-active: oklch(62% 0.06 60 / 40%);
  
  /* Typography */
  --font-display: 'Cormorant Garamond', Georgia, serif;
  --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  
  /* Easing & Timing */
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --duration-slow: 0.8s;
  --duration-normal: 0.4s;
}

/* Base Body Styles */
body {
  background-color: var(--theme-bg);
  color: var(--theme-text);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow: hidden; /* App-shell is fixed 100vh */
  width: 100vw;
  height: 100vh;
}

/* Selection highlight */
::selection {
  background-color: var(--theme-accent);
  color: var(--theme-bg);
}

/* Scrollbars for text columns */
::-webkit-scrollbar {
  width: 5px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: var(--theme-border);
}

/* App Shell Layout */
.app-shell {
  display: flex;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
  position: relative;
}

/* Vertical Sidebar (Replaces top header) */
.sidebar-nav {
  width: 90px;
  height: 100vh;
  border-right: 1px solid var(--theme-border);
  background-color: var(--theme-panel);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  padding: 2.5rem 0;
  z-index: 50;
  flex-shrink: 0;
}

.sidebar-logo {
  text-decoration: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  color: var(--theme-text);
  letter-spacing: 0.1em;
}

.logo-main {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  line-height: 1;
}

.logo-sub {
  font-family: var(--font-body);
  font-size: 0.55rem;
  letter-spacing: 0.2em;
  opacity: 0.5;
  margin-top: 4px;
}

.sidebar-middle {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.vertical-tag {
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  font-family: var(--font-body);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.3em;
  opacity: 0.45;
  white-space: nowrap;
}

.btn-sidebar-inquiry {
  background: transparent;
  border: 1px solid var(--theme-border);
  color: var(--theme-text);
  padding: 1rem 0.6rem;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.8rem;
  font-family: var(--font-body);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  transition: all var(--duration-normal) var(--ease-out-expo);
}

.btn-sidebar-inquiry:hover {
  border-color: var(--theme-accent);
  color: var(--theme-accent);
}

.btn-dot {
  width: 5px;
  height: 5px;
  background-color: var(--theme-accent);
  border-radius: 50%;
}

/* Horizontal Panel Gallery (Die Wandgalerie) */
.panels-container {
  display: flex;
  flex: 1;
  height: 100vh;
  overflow: hidden;
  background-color: #121110;
}

.material-panel {
  flex: 1;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 5rem 4rem;
  overflow: hidden;
  cursor: pointer;
  transition: flex var(--duration-slow) var(--ease-out-expo);
}

.panel-background-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  z-index: 1;
  transition: transform var(--duration-slow) var(--ease-out-expo),
              filter var(--duration-slow) var(--ease-out-expo);
  filter: grayscale(40%) contrast(1.05) brightness(0.75);
}

.panel-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: oklch(15% 0.015 80 / 30%);
  z-index: 2;
  transition: background-color var(--duration-normal) ease;
}

/* Panel content */
.panel-content {
  position: relative;
  z-index: 5;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  pointer-events: none; /* Let clicking trigger the parent panel click */
}

.panel-header-block {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.panel-num {
  font-family: monospace;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--theme-accent);
  opacity: 0.95;
}

.panel-title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  font-weight: 400;
  color: oklch(96% 0.008 80);
  line-height: 1;
  letter-spacing: -0.01em;
}

.panel-subtitle {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  color: oklch(96% 0.008 80);
  opacity: 0.65;
  text-transform: uppercase;
}

/* Panel hover expanded content */
.panel-hover-info {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s var(--ease-out-expo),
              transform 0.5s var(--ease-out-expo);
  max-width: 380px;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  pointer-events: auto; /* Clickable inside panel */
}

.panel-lead {
  font-size: 0.95rem;
  color: oklch(96% 0.008 80);
  opacity: 0.9;
  line-height: 1.6;
}

.btn-reveal-panel {
  align-self: flex-start;
  background-color: oklch(96% 0.008 80);
  border: 1px solid oklch(96% 0.008 80);
  color: oklch(15% 0.015 80);
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  padding: 0.9rem 1.8rem;
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-out-expo);
}

.btn-reveal-panel:hover {
  background-color: transparent;
  color: oklch(96% 0.008 80);
}

/* Hover Expanding Behaviors */
.material-panel.active-hover:hover {
  flex: 1.8;
}

.material-panel.active-hover:hover .panel-background-image {
  transform: scale(1.03);
  filter: grayscale(0%) contrast(1) brightness(0.8);
}

.material-panel.active-hover:hover .panel-overlay {
  background-color: oklch(15% 0.015 80 / 15%);
}

.material-panel.active-hover:hover .panel-hover-info {
  opacity: 1;
  transform: translateY(0);
  transition-delay: 0.1s;
}

/* Detail Overlays Sheets */
.detail-overlay {
  position: fixed;
  top: 0;
  left: 90px;
  right: 0;
  bottom: 0;
  background-color: var(--theme-bg);
  z-index: 80;
  transform: translateY(100%);
  transition: transform var(--duration-slow) var(--ease-out-expo);
}

.detail-overlay.active {
  transform: translateY(0);
}

.detail-split-layout {
  display: flex;
  height: 100%;
  width: 100%;
}

.detail-media-col {
  width: 42%;
  height: 100%;
  background-size: cover;
  background-position: center;
  position: relative;
}

.detail-media-col::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: oklch(20% 0.015 80 / 10%);
}

.media-caption {
  position: absolute;
  bottom: 3rem;
  left: 3rem;
  z-index: 10;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  color: oklch(96% 0.008 80);
}

.caption-label {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.15em;
}

.caption-spec {
  font-family: monospace;
  font-size: 0.65rem;
  opacity: 0.75;
}

.detail-text-col {
  width: 58%;
  height: 100%;
  overflow-y: auto;
  padding: 6rem 6rem;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  position: relative;
  background-color: var(--theme-panel);
}

.btn-close-overlay {
  position: absolute;
  top: 3rem;
  right: 3rem;
  background: transparent;
  border: none;
  color: var(--theme-text);
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  cursor: pointer;
  opacity: 0.6;
  transition: opacity 0.2s ease;
}

.btn-close-overlay:hover {
  opacity: 1;
}

/* Editorial content styling */
.editorial-content {
  max-width: 62ch;
  margin-top: 2rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.text-tag {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--theme-accent);
}

.editorial-title {
  font-size: clamp(3rem, 5vw, 4.5rem);
  font-weight: 300;
  line-height: 1;
}

.editorial-lead {
  font-size: 1.25rem;
  line-height: 1.6;
  opacity: 0.9;
  font-weight: 300;
}

.editorial-body {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.editorial-body p {
  font-size: 0.95rem;
  line-height: 1.75;
}

/* Specification Lists */
.spec-list {
  border-top: 1px solid var(--theme-border);
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.spec-item {
  display: flex;
  justify-content: space-between;
  border-bottom: 1px solid oklch(20% 0.015 80 / 5%);
  padding-bottom: 0.8rem;
  font-size: 0.85rem;
}

.spec-label {
  font-weight: 600;
  opacity: 0.55;
}

.spec-val {
  font-weight: 500;
}

.btn-editorial-cta {
  align-self: flex-start;
  background-color: var(--theme-text);
  color: var(--theme-bg);
  border: 1px solid var(--theme-text);
  padding: 1.1rem 2.2rem;
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-out-expo);
  margin-top: 1.5rem;
}

.btn-editorial-cta:hover {
  background-color: transparent;
  color: var(--theme-text);
}

/* Booking Drawer Slide-Out */
.booking-drawer {
  position: fixed;
  top: 0;
  right: 0;
  width: 550px;
  height: 100vh;
  background-color: var(--theme-panel);
  border-left: 1px solid var(--theme-border);
  z-index: 95;
  transform: translateX(100%);
  transition: transform var(--duration-slow) var(--ease-out-expo);
  padding: 4rem 3.5rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
  overflow-y: auto;
}

.booking-drawer.active {
  transform: translateX(0);
}

.drawer-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--theme-border);
  padding-bottom: 1.5rem;
}

.drawer-title {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: 0.05em;
}

.btn-close-drawer {
  background: transparent;
  border: none;
  color: var(--theme-text);
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  cursor: pointer;
  opacity: 0.6;
  transition: opacity 0.2s ease;
}

.btn-close-drawer:hover {
  opacity: 1;
}

.drawer-body {
  display: flex;
  flex-direction: column;
  gap: 1.8rem;
}

.drawer-lead {
  font-size: 0.85rem;
  opacity: 0.7;
}

/* Booking Form Elements */
.booking-form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-group label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  opacity: 0.7;
}

.form-group input,
.form-group select,
.form-group textarea {
  background-color: var(--theme-bg);
  border: 1px solid var(--theme-border);
  padding: 0.85rem 1rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--theme-text);
  outline: none;
  border-radius: 0;
  transition: all var(--duration-normal) var(--ease-out-expo);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--theme-text);
  opacity: 0.35;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--theme-accent);
  background-color: var(--theme-panel);
}

.form-row-2col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.custom-select {
  appearance: none;
  background-repeat: no-repeat;
  background-position: right 1rem center;
  background-size: 1.25rem;
  padding-right: 3rem;
  background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%233a3835' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
}

.form-group select:disabled {
  opacity: 0.4;
}

.form-group input[type="date"]::-webkit-calendar-picker-indicator {
  cursor: pointer;
  filter: opacity(0.4);
}

/* Submit Action Button */
.btn-submit {
  background: transparent;
  border: 1px solid var(--theme-accent);
  color: var(--theme-accent);
  padding: 1.1rem;
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  transition: all var(--duration-normal) var(--ease-out-expo);
}

.btn-submit:hover {
  background-color: var(--theme-accent);
  color: var(--theme-bg);
}

.btn-submit:hover .btn-arrow {
  transform: translateX(5px);
}

.btn-arrow {
  transition: transform var(--duration-normal) var(--ease-out-expo);
  font-size: 1.1rem;
}

/* Submit Feedback message */
.form-feedback {
  padding: 1.2rem;
  border-left: 2px solid var(--theme-accent);
  font-size: 0.85rem;
  line-height: 1.6;
  background-color: var(--theme-bg);
  transition: all var(--duration-normal) var(--ease-out-expo);
}

.form-feedback.success {
  border-color: var(--theme-accent);
}

.form-feedback.error {
  border-color: #ef4444;
  color: #ef4444;
}

.form-feedback.hidden {
  display: none;
}

/* Contact footer inside drawer */
.drawer-contact-info {
  border-top: 1px solid var(--theme-border);
  padding-top: 1.5rem;
  margin-top: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  font-size: 0.8rem;
  opacity: 0.7;
}

.contact-label {
  font-weight: 700;
  color: var(--theme-accent);
}

/* Responsive Adaptive CSS Layout Rules */
@media (max-width: 992px) {
  
  html, body {
    overflow: auto !important;
    height: auto !important;
    width: 100% !important;
  }
  
  /* Split app shell vertically to stacked columns */
  .app-shell {
    flex-direction: column;
    overflow-y: auto;
    height: auto;
  }
  
  /* Sidebar becomes a horizontal top bar */
  .sidebar-nav {
    width: 100%;
    height: 80px;
    border-right: none;
    border-bottom: 1px solid var(--theme-border);
    flex-direction: row;
    padding: 0 2rem;
    position: sticky;
    top: 0;
  }
  
  .vertical-tag {
    writing-mode: horizontal-tb;
    transform: none;
    font-size: 0.55rem;
  }
  
  .btn-sidebar-inquiry {
    writing-mode: horizontal-tb;
    transform: none;
    padding: 0.6rem 1.2rem;
    flex-direction: row;
    align-items: center;
  }
  
  /* Panels stack vertically instead of flex rows */
  .panels-container {
    flex-direction: column;
    height: calc(100vh - 80px);
  }
  
  .material-panel {
    flex: 1;
    padding: 3rem 2rem;
  }
  
  /* Expands height on hover */
  .material-panel.active-hover:hover {
    flex: 1.5;
  }
  
  .panel-title {
    font-size: 2.5rem;
  }
  
  .panel-hover-info {
    opacity: 1;
    transform: none;
    pointer-events: auto;
  }
  
  .panel-lead {
    font-size: 0.85rem;
  }
  
  .btn-reveal-panel {
    padding: 0.7rem 1.4rem;
  }
  
  /* Detail sheet full viewport from bottom */
  .detail-overlay {
    left: 0;
    top: 80px;
  }
  
  .detail-split-layout {
    flex-direction: column;
  }
  
  .detail-media-col {
    width: 100%;
    height: 30vh;
  }
  
  .media-caption {
    bottom: 1.5rem;
    left: 1.5rem;
  }
  
  .detail-text-col {
    width: 100%;
    height: 70vh;
    padding: 3rem 2rem;
  }
  
  .btn-close-overlay {
    top: 2rem;
    right: 2rem;
  }
  
  /* Booking Drawer spans full screen width */
  .booking-drawer {
    width: 100%;
    padding: 3rem 2rem;
  }
}

@media (max-width: 600px) {
  .sidebar-middle {
    display: none; /* Hide middle tag to save menu spacing */
  }
  
  .form-row-2col {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
}