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

:root {
  --bg-color: #f3f7fb;
  --panel-bg: rgba(255, 255, 255, 0.82);
  --panel-border: rgba(31, 78, 121, 0.16);
  --text-main: #102033;
  --text-muted: #607086;
  --primary: #1d70b8;
  --primary-hover: #155a96;
  --primary-glow: rgba(29, 112, 184, 0.18);
  --accent-cyan: #0f9bb4;
  --accent-cyan-glow: rgba(15, 155, 180, 0.18);
  --danger: #ef4444;
  --danger-hover: #dc2626;
  --success: #16885a;
  --card-shadow: 0 18px 50px rgba(31, 78, 121, 0.12);
  --font-family-body: 'Inter', sans-serif;
  --font-family-title: 'Outfit', sans-serif;
  --border-radius-lg: 16px;
  --border-radius-md: 10px;
  --border-radius-sm: 6px;
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
  background:
    linear-gradient(rgba(29, 112, 184, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(29, 112, 184, 0.045) 1px, transparent 1px),
    var(--bg-color);
  background-size: 28px 28px;
  color: var(--text-main);
  font-family: var(--font-family-body);
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
  display: flex;
  flex-direction: column;
}

/* Background Blur Decorations */
.bg-blur {
  position: absolute;
  width: 40vw;
  height: 40vw;
  border-radius: 50%;
  filter: blur(120px);
  z-index: -1;
  opacity: 0.15;
  pointer-events: none;
}

.blur-1 {
  background-color: #b8ddff;
  top: -10vw;
  left: -10vw;
}

.blur-2 {
  background-color: #b8f0f6;
  bottom: -10vw;
  right: -10vw;
}

/* Scrollbars */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: rgba(29, 112, 184, 0.04);
}
::-webkit-scrollbar-thumb {
  background: rgba(29, 112, 184, 0.22);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(29, 112, 184, 0.34);
}

/* App Container */
.app-container {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  max-width: 1400px;
  width: 100%;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.app-header {
  height: 80px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--panel-border);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  font-family: var(--font-family-title);
  font-weight: 700;
  font-size: 1.5rem;
  letter-spacing: -0.02em;
  min-width: 0;
}

.brand > span {
  min-width: 0;
  overflow-wrap: anywhere;
}

.logo-icon {
  color: var(--primary);
  filter: drop-shadow(0 0 8px var(--primary-glow));
  transition: var(--transition-smooth);
}

.brand:hover .logo-icon {
  transform: rotate(15deg) scale(1.05);
}

.highlight {
  color: var(--accent-cyan);
  background: linear-gradient(135deg, #1d70b8, #0f9bb4);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.status-badge {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: 20px;
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(22, 136, 90, 0.1);
  color: var(--success);
  border: 1px solid rgba(22, 136, 90, 0.2);
}

.status-badge::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  background-color: var(--success);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--success);
}

.privacy-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid rgba(29, 112, 184, 0.2);
  background: rgba(255, 255, 255, 0.78);
  color: #155a96;
  border-radius: 999px;
  padding: 8px 12px;
  font-family: var(--font-family-body);
  font-size: 0.82rem;
  font-weight: 800;
  cursor: pointer;
  box-shadow: 0 8px 20px rgba(31, 78, 121, 0.08);
  transition: var(--transition-smooth);
}

.privacy-toggle:hover {
  background: #ffffff;
  border-color: rgba(29, 112, 184, 0.35);
}

body.privacy-mode .privacy-toggle {
  background: #102033;
  color: #f3f7fb;
  border-color: rgba(16, 32, 51, 0.4);
}

/* Main Content Area */
.main-content {
  flex: 1;
  padding: 40px 0;
  display: flex;
  flex-direction: column;
}

/* Views Management */
.view {
  display: none;
  width: 100%;
  animation: fadeIn 0.4s ease forwards;
}

.view.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Cards (Glassmorphism) */
.glass-card {
  background: var(--panel-bg);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--panel-border);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--card-shadow);
  transition: var(--transition-smooth);
}

.glass-card:hover {
  border-color: rgba(29, 112, 184, 0.24);
}

/* Hero Section */
.hero-section {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 48px auto;
}

.hero-section h1 {
  font-family: var(--font-family-title);
  font-size: 3rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin-bottom: 16px;
}

.gradient-text {
  background: linear-gradient(135deg, #1d70b8, #0f9bb4);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.subtitle {
  font-size: 1.125rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* Public CAD/BIM Landing */
.cad-hero {
  min-height: calc(100vh - 220px);
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(420px, 1.1fr);
  gap: 48px;
  align-items: center;
  position: relative;
  z-index: 1;
  min-width: 0;
}

.cad-copy {
  max-width: 620px;
  min-width: 0;
  width: 100%;
}

.cad-eyebrow {
  display: inline-flex;
  align-items: center;
  color: var(--accent-cyan);
  border: 1px solid rgba(15, 155, 180, 0.25);
  background: rgba(15, 155, 180, 0.08);
  padding: 7px 12px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  margin-bottom: 20px;
}

.cad-copy h1 {
  font-family: var(--font-family-title);
  font-size: 3.35rem;
  line-height: 1.05;
  font-weight: 800;
  max-width: 720px;
  margin-bottom: 20px;
  overflow-wrap: anywhere;
}

.cad-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

.software-logo-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 24px;
}

.software-logo-card {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 72px;
  padding: 12px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid rgba(29, 112, 184, 0.18);
  box-shadow: 0 12px 28px rgba(31, 78, 121, 0.1);
}

.software-logo-card strong,
.software-logo-card span {
  display: block;
}

.software-logo-card strong {
  font-family: var(--font-family-title);
  font-size: 1rem;
}

.software-logo-card span {
  color: var(--text-muted);
  font-size: 0.78rem;
  margin-top: 2px;
}

.software-mark {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: #ffffff;
  font-weight: 900;
  letter-spacing: 0;
}

.mark-cad {
  background: linear-gradient(135deg, #d72638, #941b2f);
}

.mark-bim {
  background: linear-gradient(135deg, #1d70b8, #0f9bb4);
}

.mark-dwg {
  background: linear-gradient(135deg, #232f3e, #4f6377);
  font-size: 0.72rem;
}

.model-viewer-card {
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid var(--panel-border);
  border-radius: var(--border-radius-lg);
  box-shadow: 0 24px 70px rgba(31, 78, 121, 0.16);
  overflow: hidden;
}

.viewer-toolbar {
  height: 48px;
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 0 18px;
  border-bottom: 1px solid var(--panel-border);
  color: var(--text-muted);
}

.viewer-toolbar span {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: rgba(29, 112, 184, 0.25);
}

.viewer-toolbar strong {
  margin-left: 10px;
  font-size: 0.85rem;
  font-weight: 600;
}

.model-canvas {
  min-height: 420px;
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(rgba(29, 112, 184, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(29, 112, 184, 0.08) 1px, transparent 1px),
    linear-gradient(135deg, #fbfdff, #eef7ff);
  background-size: 22px 22px, 22px 22px, auto;
  perspective: 760px;
}

.blueprint-sheet {
  position: absolute;
  left: 34px;
  top: 34px;
  width: 54%;
  height: 68%;
  border: 2px solid rgba(29, 112, 184, 0.7);
  background:
    linear-gradient(rgba(29, 112, 184, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(29, 112, 184, 0.08) 1px, transparent 1px),
    rgba(255, 255, 255, 0.72);
  background-size: 18px 18px;
  box-shadow: inset 0 0 0 8px rgba(29, 112, 184, 0.04);
}

.plan-room {
  position: absolute;
  border: 3px solid #1d70b8;
  background: rgba(255, 255, 255, 0.28);
}

.room-a {
  left: 10%;
  top: 14%;
  width: 40%;
  height: 42%;
}

.room-b {
  left: 50%;
  top: 14%;
  width: 38%;
  height: 42%;
}

.room-c {
  left: 10%;
  top: 56%;
  width: 78%;
  height: 28%;
}

.plan-door {
  position: absolute;
  width: 44px;
  height: 44px;
  border: 2px solid #0f9bb4;
  border-left: 0;
  border-bottom: 0;
  border-radius: 0 44px 0 0;
}

.door-a {
  left: 46%;
  top: 48%;
  transform: rotate(90deg);
}

.door-b {
  left: 22%;
  top: 49%;
}

.dimension,
.section-mark {
  position: absolute;
  color: #155a96;
  background: #ffffff;
  border: 1px solid rgba(29, 112, 184, 0.28);
  border-radius: 4px;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 3px 7px;
}

.dim-top {
  top: -26px;
  left: 35%;
}

.dim-side {
  right: -36px;
  top: 42%;
  transform: rotate(90deg);
}

.section-a {
  left: 14%;
  bottom: 8%;
}

.section-b {
  right: 10%;
  bottom: 8%;
}

.building-model {
  position: absolute;
  right: 7%;
  bottom: 58px;
  width: 34%;
  height: 72%;
  transform: rotateX(58deg) rotateZ(-34deg);
  transform-style: preserve-3d;
}

.model-base {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 120px;
  border: 2px solid rgba(29, 112, 184, 0.3);
  background-image:
    linear-gradient(rgba(29, 112, 184, 0.12) 1px, transparent 1px),
    linear-gradient(90deg, rgba(29, 112, 184, 0.12) 1px, transparent 1px);
  background-size: 20px 20px;
}

.model-block {
  position: absolute;
  bottom: 70px;
  background: linear-gradient(135deg, #cce7ff, #f7fbff);
  border: 2px solid rgba(29, 112, 184, 0.42);
  box-shadow: 18px 18px 0 rgba(15, 155, 180, 0.12);
}

.block-a {
  left: 14%;
  width: 88px;
  height: 154px;
}

.block-b {
  left: 40%;
  width: 118px;
  height: 216px;
}

.block-c {
  left: 72%;
  width: 70px;
  height: 124px;
}

.model-roof {
  position: absolute;
  left: 33%;
  bottom: 284px;
  width: 150px;
  height: 38px;
  background: rgba(29, 112, 184, 0.18);
  border: 2px solid rgba(29, 112, 184, 0.4);
}

.viewer-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--panel-border);
}

.viewer-stats div {
  padding: 18px;
  border-right: 1px solid var(--panel-border);
}

.viewer-stats div:last-child {
  border-right: none;
}

.viewer-stats strong,
.viewer-stats span {
  display: block;
}

.viewer-stats strong {
  font-family: var(--font-family-title);
  font-size: 1.35rem;
}

.viewer-stats span {
  margin-top: 3px;
  color: var(--text-muted);
  font-size: 0.78rem;
}

.cad-feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 12px;
}

.cad-feature {
  border-top: 1px solid var(--panel-border);
  padding-top: 18px;
}

.cad-feature span {
  color: var(--accent-cyan);
  font-weight: 800;
  font-size: 0.82rem;
}

.cad-feature h3 {
  font-family: var(--font-family-title);
  margin: 10px 0 6px;
}

.cad-feature p {
  color: var(--text-muted);
  line-height: 1.55;
  font-size: 0.9rem;
}

.shortcut-panel {
  margin: 16px 0 26px;
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid var(--panel-border);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--card-shadow);
  overflow: hidden;
  position: relative;
  z-index: 1;
}

.shortcut-header {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--panel-border);
}

.shortcut-header span {
  color: var(--text-muted);
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
}

.shortcut-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.shortcut-grid div {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 18px;
  border-right: 1px solid var(--panel-border);
  border-bottom: 1px solid var(--panel-border);
}

.shortcut-grid div:nth-child(4n) {
  border-right: none;
}

kbd {
  min-width: 40px;
  text-align: center;
  background: #eaf4ff;
  border: 1px solid rgba(29, 112, 184, 0.22);
  border-bottom-width: 3px;
  border-radius: 6px;
  color: #155a96;
  font-family: var(--font-family-body);
  font-weight: 800;
  padding: 5px 7px;
}

/* Forms */
.workspace-form-card {
  max-width: 600px;
  width: 100%;
  margin: 0 auto;
  padding: 36px;
}

.workspace-form-card h2 {
  font-family: var(--font-family-title);
  font-weight: 700;
  font-size: 1.75rem;
  margin-bottom: 28px;
  text-align: center;
}

.form-group {
  margin-bottom: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-main);
  opacity: 0.9;
}

.optional {
  font-size: 0.75rem;
  color: var(--text-muted);
}

input[type="text"],
input[type="password"],
textarea,
select {
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid var(--panel-border);
  border-radius: var(--border-radius-md);
  padding: 12px 16px;
  color: var(--text-main);
  font-family: var(--font-family-body);
  font-size: 0.95rem;
  outline: none;
  transition: var(--transition-smooth);
  width: 100%;
}

input:focus,
textarea:focus,
select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 12px var(--primary-glow);
  background: #ffffff;
}

textarea {
  resize: vertical;
}

.password-field {
  position: relative;
}

.password-field input {
  padding-right: 46px;
}

.password-toggle {
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  width: 34px;
  height: 34px;
  border: 1px solid transparent;
  border-radius: 8px;
  background: transparent;
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.password-toggle:hover,
.password-toggle.is-visible {
  color: var(--primary);
  background: rgba(29, 112, 184, 0.08);
  border-color: rgba(29, 112, 184, 0.14);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-family-body);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 12px 24px;
  border-radius: var(--border-radius-md);
  border: none;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.btn:disabled {
  cursor: not-allowed;
  opacity: 0.45;
  filter: grayscale(0.7);
  box-shadow: none;
  transform: none;
}

.btn:disabled:hover {
  transform: none;
  box-shadow: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), #0f9bb4);
  color: #fff;
  box-shadow: 0 4px 14px var(--primary-glow);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #155a96, #0d8096);
  box-shadow: 0 6px 20px var(--primary-glow);
  transform: translateY(-1px);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.74);
  color: var(--text-main);
  border: 1px solid var(--panel-border);
}

.btn-secondary:hover {
  background: #ffffff;
  border-color: rgba(29, 112, 184, 0.25);
}

.btn-danger {
  background: rgba(239, 68, 68, 0.15);
  color: #fca5a5;
  border: 1px solid rgba(239, 68, 68, 0.2);
}

.btn-danger:hover {
  background: var(--danger);
  color: #fff;
  box-shadow: 0 4px 14px rgba(239, 68, 68, 0.3);
}

.btn-full-width {
  width: 100%;
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.85rem;
  border-radius: var(--border-radius-sm);
}

.btn-icon-only {
  padding: 12px;
  border-radius: var(--border-radius-md);
}

/* Unlock Workspace View */
.unlock-container {
  max-width: 440px;
  width: 100%;
  margin: 80px auto;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.lock-icon-container {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: rgba(29, 112, 184, 0.1);
  border: 1px solid rgba(29, 112, 184, 0.2);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  filter: drop-shadow(0 0 10px var(--primary-glow));
}

.unlock-container h2 {
  font-family: var(--font-family-title);
  font-size: 2rem;
  margin-bottom: 8px;
}

.unlock-card {
  width: 100%;
  padding: 30px;
  margin: 28px 0 20px 0;
  text-align: left;
}

.error-msg {
  color: #f87171;
  font-size: 0.85rem;
  margin-top: -8px;
  margin-bottom: 16px;
}

.field-error {
  color: #dc2626;
  font-size: 0.8rem;
  line-height: 1.4;
}

.hide {
  display: none !important;
}

/* Workspace Privacy Mode */
body.workspace-route.privacy-mode {
  background:
    linear-gradient(rgba(16, 32, 51, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(16, 32, 51, 0.05) 1px, transparent 1px),
    #dfe8f0;
  background-size: 24px 24px;
}

body.workspace-route.privacy-mode::after {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 2500;
  background:
    repeating-linear-gradient(0deg, rgba(16, 32, 51, 0.08) 0, rgba(16, 32, 51, 0.08) 1px, transparent 1px, transparent 5px),
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.14) 0, rgba(255, 255, 255, 0.14) 1px, transparent 1px, transparent 7px),
    radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.18), transparent 28%),
    rgba(219, 229, 238, 0.2);
  mix-blend-mode: multiply;
}

body.workspace-route.privacy-mode .app-container {
  filter: saturate(0.32) contrast(0.72) brightness(0.88);
}

body.workspace-route.privacy-mode .glass-card,
body.workspace-route.privacy-mode .files-list-card,
body.workspace-route.privacy-mode .upload-card-inner {
  background: rgba(226, 233, 240, 0.74);
  box-shadow: 0 10px 34px rgba(16, 32, 51, 0.08);
}

body.workspace-route.privacy-mode #db-ws-name,
body.workspace-route.privacy-mode #db-ws-desc,
body.workspace-route.privacy-mode #db-ws-expiry,
body.workspace-route.privacy-mode .workspace-form-card h2,
body.workspace-route.privacy-mode .brand,
body.workspace-route.privacy-mode .hero-section h1,
body.workspace-route.privacy-mode .hero-section .subtitle,
body.workspace-route.privacy-mode .software-logo-card,
body.workspace-route.privacy-mode .cad-eyebrow,
body.workspace-route.privacy-mode .shortcut-panel,
body.workspace-route.privacy-mode .cad-feature-grid,
body.workspace-route.privacy-mode .workspace-form-card label,
body.workspace-route.privacy-mode .workspace-form-card input,
body.workspace-route.privacy-mode .workspace-form-card textarea,
body.workspace-route.privacy-mode .workspace-form-card select,
body.workspace-route.privacy-mode .unlock-container h2,
body.workspace-route.privacy-mode .unlock-container .subtitle,
body.workspace-route.privacy-mode .unlock-card label,
body.workspace-route.privacy-mode .unlock-card input,
body.workspace-route.privacy-mode .drop-zone-content h3,
body.workspace-route.privacy-mode .drop-zone-content p,
body.workspace-route.privacy-mode .file-limit-label,
body.workspace-route.privacy-mode .search-container,
body.workspace-route.privacy-mode .files-list-header,
body.workspace-route.privacy-mode .no-files-placeholder,
body.workspace-route.privacy-mode .file-name-text,
body.workspace-route.privacy-mode .file-size-cell,
body.workspace-route.privacy-mode .file-date-cell,
body.workspace-route.privacy-mode .qr-link-display,
body.workspace-route.privacy-mode #preview-filename,
body.workspace-route.privacy-mode .preview-body img,
body.workspace-route.privacy-mode .preview-body video,
body.workspace-route.privacy-mode .preview-body iframe,
body.workspace-route.privacy-mode .preview-text,
body.workspace-route.privacy-mode .progress-files-list,
body.workspace-route.privacy-mode .panel-header {
  filter: blur(7px);
  opacity: 0.46;
  transition: filter 0.18s ease, opacity 0.18s ease;
}

body.workspace-route.privacy-mode input,
body.workspace-route.privacy-mode textarea,
body.workspace-route.privacy-mode select {
  background: rgba(238, 243, 248, 0.84);
  color: rgba(16, 32, 51, 0.76);
}

body.workspace-route.privacy-mode input:focus,
body.workspace-route.privacy-mode textarea:focus,
body.workspace-route.privacy-mode select:focus {
  filter: blur(2px);
  color: var(--text-main);
}

body.workspace-route.privacy-mode .privacy-toggle,
body.workspace-route.privacy-mode #btn-select-files,
body.workspace-route.privacy-mode #btn-select-folder,
body.workspace-route.privacy-mode .btn-download-file,
body.workspace-route.privacy-mode .btn-delete-file,
body.workspace-route.privacy-mode #preview-btn-download,
body.workspace-route.privacy-mode #btn-bulk-download,
body.workspace-route.privacy-mode #btn-bulk-delete,
body.workspace-route.privacy-mode #btn-lock-ws,
body.workspace-route.privacy-mode #btn-refresh-files {
  filter: blur(4px) saturate(0.42) brightness(0.86);
  opacity: 0.5;
}

body.workspace-route.privacy-mode .privacy-toggle,
body.workspace-route.privacy-mode #btn-select-files,
body.workspace-route.privacy-mode #btn-select-folder,
body.workspace-route.privacy-mode .btn-download-file,
body.workspace-route.privacy-mode #preview-btn-download {
  filter: blur(1.5px) saturate(0.7) brightness(0.94);
  opacity: 0.7;
}

body.workspace-route.privacy-mode .privacy-toggle:hover,
body.workspace-route.privacy-mode #btn-select-files:hover,
body.workspace-route.privacy-mode #btn-select-folder:hover,
body.workspace-route.privacy-mode .btn-download-file:hover,
body.workspace-route.privacy-mode .btn-delete-file:hover,
body.workspace-route.privacy-mode #preview-btn-download:hover,
body.workspace-route.privacy-mode #btn-bulk-download:hover,
body.workspace-route.privacy-mode #btn-bulk-delete:hover,
body.workspace-route.privacy-mode #btn-lock-ws:hover,
body.workspace-route.privacy-mode #btn-refresh-files:hover {
  opacity: 0.72;
}

body.workspace-route.privacy-mode .privacy-toggle:hover,
body.workspace-route.privacy-mode #btn-select-files:hover,
body.workspace-route.privacy-mode #btn-select-folder:hover,
body.workspace-route.privacy-mode .btn-download-file:hover,
body.workspace-route.privacy-mode #preview-btn-download:hover {
  filter: blur(0.8px) saturate(0.82) brightness(1);
  opacity: 0.84;
}

body.workspace-route.privacy-mode .privacy-toggle svg,
body.workspace-route.privacy-mode #btn-select-files svg,
body.workspace-route.privacy-mode #btn-select-folder svg,
body.workspace-route.privacy-mode .btn-download-file svg,
body.workspace-route.privacy-mode .btn-delete-file svg,
body.workspace-route.privacy-mode #preview-btn-download svg,
body.workspace-route.privacy-mode #btn-bulk-download svg,
body.workspace-route.privacy-mode #btn-bulk-delete svg,
body.workspace-route.privacy-mode #btn-lock-ws svg,
body.workspace-route.privacy-mode #btn-refresh-files svg {
  filter: blur(1px) saturate(0.7) brightness(0.92);
  opacity: 0.78;
}

body.workspace-route.privacy-mode .privacy-toggle svg,
body.workspace-route.privacy-mode #btn-select-files svg,
body.workspace-route.privacy-mode #btn-select-folder svg,
body.workspace-route.privacy-mode .btn-download-file svg,
body.workspace-route.privacy-mode #preview-btn-download svg {
  filter: blur(0.2px) saturate(0.9) brightness(1);
  opacity: 0.96;
}

body.workspace-route.privacy-mode .privacy-toggle span,
body.workspace-route.privacy-mode #btn-select-files span,
body.workspace-route.privacy-mode #btn-select-folder span,
body.workspace-route.privacy-mode #preview-btn-download span,
body.workspace-route.privacy-mode #btn-lock-ws span {
  filter: blur(5px);
  opacity: 0.36;
}

body.workspace-route.privacy-mode .privacy-toggle span,
body.workspace-route.privacy-mode #btn-select-files span,
body.workspace-route.privacy-mode #btn-select-folder span {
  filter: blur(2px);
  opacity: 0.58;
}

body.workspace-route.privacy-mode .btn-primary,
body.workspace-route.privacy-mode .btn-secondary,
body.workspace-route.privacy-mode .btn-danger {
  box-shadow: none;
}

body.workspace-route.privacy-mode .btn:not(#btn-select-files):not(#btn-select-folder):not(.btn-download-file):not(.btn-delete-file):not(#preview-btn-download):not(#btn-bulk-download):not(#btn-bulk-delete):not(#btn-lock-ws):not(#btn-refresh-files) {
  filter: blur(3px) saturate(0.45);
  opacity: 0.54;
}

body.workspace-route.privacy-mode .file-name-cell {
  cursor: help;
}

body.workspace-route.privacy-mode .file-row:hover {
  background: rgba(255, 255, 255, 0.5);
  box-shadow: inset 3px 0 0 rgba(29, 112, 184, 0.36);
}

body.workspace-route.privacy-mode .file-row:hover .file-icon,
body.workspace-route.privacy-mode .file-row:hover .file-name-text {
  filter: blur(1.2px) saturate(0.65) brightness(0.96);
  opacity: 0.86;
}

body.workspace-route.privacy-mode .file-name-cell:hover::after {
  content: attr(data-tooltip);
  position: absolute;
  left: 0;
  top: calc(100% + 10px);
  z-index: 3000;
  max-width: min(420px, 76vw);
  white-space: normal;
  overflow-wrap: anywhere;
  padding: 9px 12px;
  border-radius: 8px;
  background: rgba(16, 32, 51, 0.92);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.18);
  box-shadow: 0 14px 34px rgba(16, 32, 51, 0.24);
  font-size: 0.82rem;
  line-height: 1.35;
  filter: none;
  opacity: 1;
}

body.workspace-route.privacy-mode .file-name-cell:hover::before {
  content: '';
  position: absolute;
  left: 18px;
  top: calc(100% + 3px);
  z-index: 3001;
  width: 12px;
  height: 12px;
  background: rgba(16, 32, 51, 0.92);
  transform: rotate(45deg);
}

.back-to-home-btn {
  margin-top: 10px;
}

/* Dashboard View */
.dashboard-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 36px;
  gap: 24px;
}

.ws-info {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.title-row {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

#db-ws-name {
  font-family: var(--font-family-title);
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.expiry-badge {
  background: rgba(6, 182, 212, 0.1);
  color: var(--accent-cyan);
  border: 1px solid rgba(6, 182, 212, 0.2);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 20px;
}

.ws-description {
  color: var(--text-muted);
  font-size: 0.95rem;
  max-width: 700px;
}

.ws-actions {
  display: flex;
  gap: 12px;
  align-items: center;
}

/* Dashboard Grid Layout */
.dashboard-grid {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 24px;
}

.upload-section {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.upload-card-inner {
  height: 280px;
  border-style: dashed;
  border-width: 2px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  cursor: pointer;
  position: relative;
}

.upload-card-inner.dragover {
  border-color: var(--primary);
  background: rgba(29, 112, 184, 0.05);
  box-shadow: 0 0 20px var(--primary-glow);
}

.drop-zone-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.upload-icon-container {
  color: var(--text-muted);
  margin-bottom: 16px;
  transition: var(--transition-smooth);
}

.upload-card-inner:hover .upload-icon-container {
  color: var(--primary);
  transform: translateY(-4px);
}

.drop-zone-content h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.drop-zone-content p {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-bottom: 20px;
}

.upload-buttons {
  display: flex;
  gap: 10px;
  margin-bottom: 14px;
}

.file-limit-label {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Upload Progress Panel */
.uploads-progress-panel {
  padding: 20px;
}

.uploads-progress-panel h4 {
  font-size: 0.95rem;
  font-weight: 600;
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.progress-bar-container-overall {
  width: 100%;
  height: 6px;
  background: rgba(29, 112, 184, 0.08);
  border-radius: 3px;
  overflow: hidden;
  margin-bottom: 16px;
}

.progress-bar-fill-overall {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--primary), var(--accent-cyan));
  border-radius: 3px;
  transition: width 0.2s ease;
}

.progress-bar-fill-overall.danger-fill {
  background: linear-gradient(90deg, #ef4444, #f97316);
}

.progress-files-list {
  max-height: 160px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.progress-file-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.progress-file-info {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
}

.progress-file-name {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 220px;
}

.progress-bar-container-single {
  width: 100%;
  height: 4px;
  background: rgba(29, 112, 184, 0.08);
  border-radius: 2px;
  overflow: hidden;
}

.progress-bar-fill-single {
  height: 100%;
  width: 0%;
  background: var(--primary);
  border-radius: 2px;
  transition: width 0.2s ease;
}

/* File Explorer Section */
.files-explorer-section {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.explorer-header {
  display: flex;
  gap: 12px;
}

.bulk-actions-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  padding: 10px 12px;
  border: 1px solid var(--panel-border);
  border-radius: var(--border-radius-md);
  background: rgba(255, 255, 255, 0.66);
}

.selected-count {
  color: var(--text-muted);
  font-size: 0.82rem;
  font-weight: 700;
  margin-right: auto;
}

.bulk-delete-progress-panel {
  padding: 16px;
}

.bulk-delete-progress-panel h4 {
  font-size: 0.95rem;
  font-weight: 700;
}

.bulk-delete-status {
  color: var(--text-muted);
  font-size: 0.84rem;
}

.search-container {
  flex: 1;
  position: relative;
}

.search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

#search-input {
  padding-left: 44px;
  background: rgba(255, 255, 255, 0.78);
}

.files-list-card {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 400px;
  max-height: 600px;
  overflow: hidden;
}

.files-list-header {
  display: grid;
  grid-template-columns: 2fr 100px 140px 180px;
  padding: 16px 24px;
  border-bottom: 1px solid var(--panel-border);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.files-list-body {
  flex: 1;
  overflow-y: auto;
  position: relative;
}

.no-files-placeholder {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  color: var(--text-muted);
  width: 100%;
}

.no-files-placeholder svg {
  margin-bottom: 16px;
  opacity: 0.5;
}

.no-files-placeholder h3 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 4px;
}

.no-files-placeholder p {
  font-size: 0.85rem;
}

/* File Row */
.file-row {
  display: grid;
  grid-template-columns: 2fr 100px 140px 180px;
  padding: 14px 24px;
  border-bottom: 1px solid rgba(29, 112, 184, 0.08);
  align-items: center;
  transition: var(--transition-smooth);
  font-size: 0.9rem;
}

.file-row:hover {
  background: rgba(29, 112, 184, 0.04);
}

.file-name-cell {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 500;
  white-space: nowrap;
  overflow: visible;
  text-overflow: ellipsis;
  padding-right: 12px;
  cursor: pointer;
  position: relative;
}

.file-select-control {
  width: 24px;
  height: 24px;
  flex: 0 0 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.file-select-control input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.file-select-control span {
  width: 18px;
  height: 18px;
  border: 1px solid rgba(29, 112, 184, 0.34);
  border-radius: 5px;
  background: rgba(255, 255, 255, 0.86);
  box-shadow: inset 0 0 0 2px rgba(255, 255, 255, 0.7);
  transition: var(--transition-smooth);
}

.file-select-control input:checked + span {
  background: var(--primary);
  border-color: var(--primary);
  box-shadow: inset 0 0 0 4px var(--primary);
}

.file-select-control input:checked + span::after {
  content: '';
  display: block;
  width: 8px;
  height: 5px;
  margin: 4px auto 0;
  border-left: 2px solid #ffffff;
  border-bottom: 2px solid #ffffff;
  transform: rotate(-45deg);
}

.file-name-cell:hover {
  color: var(--primary);
}

.file-icon {
  flex-shrink: 0;
  color: var(--text-muted);
}

.file-name-text {
  overflow: hidden;
  text-overflow: ellipsis;
  min-width: 0;
}

.file-size-cell {
  color: var(--text-muted);
}

.file-date-cell {
  color: var(--text-muted);
}

.file-actions-cell {
  display: flex;
  gap: 8px;
}

/* Modal Overlay */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(226, 238, 249, 0.82);
  backdrop-filter: blur(8px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: modalFadeIn 0.3s ease forwards;
}

@keyframes modalFadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.modal-content {
  width: 100%;
  max-width: 440px;
  padding: 30px;
  position: relative;
  text-align: center;
  animation: modalScaleUp 0.3s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

@keyframes modalScaleUp {
  from { transform: scale(0.9); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.modal-close {
  position: absolute;
  right: 18px;
  top: 18px;
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition-smooth);
}

.modal-close:hover {
  color: var(--text-main);
  transform: rotate(90deg);
}

/* QR Code Modal Specifics */
.qr-container {
  background: white;
  padding: 16px;
  border-radius: var(--border-radius-md);
  display: inline-block;
  margin: 24px auto;
  box-shadow: 0 10px 25px rgba(0,0,0,0.5);
}

.qr-container img {
  display: block;
  width: 200px;
  height: 200px;
}

.qr-link-display {
  background: rgba(0,0,0,0.25);
  border: 1px solid var(--panel-border);
  padding: 10px 14px;
  border-radius: var(--border-radius-sm);
  font-family: monospace;
  font-size: 0.85rem;
  word-break: break-all;
  color: var(--accent-cyan);
}

/* Media Preview Modal */
.preview-modal-content {
  max-width: 800px;
  width: 90%;
  height: 80vh;
  display: flex;
  flex-direction: column;
  padding: 0;
  overflow: hidden;
}

.preview-header {
  padding: 18px 24px;
  border-bottom: 1px solid var(--panel-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.preview-title-info {
  display: flex;
  align-items: center;
  gap: 12px;
  max-width: 60%;
}

.preview-title-info h3 {
  font-family: var(--font-family-title);
  font-size: 1.15rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.preview-badge {
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--panel-border);
  font-size: 0.75rem;
  padding: 2px 8px;
  border-radius: 4px;
  color: var(--text-muted);
}

.preview-header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-right: 32px;
}

.preview-body {
  flex: 1;
  background: #f5faff;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  overflow: auto;
}

.preview-body img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  box-shadow: 0 4px 20px rgba(0,0,0,0.8);
}

.preview-body video,
.preview-body audio {
  max-width: 100%;
  box-shadow: 0 4px 20px rgba(0,0,0,0.8);
}

.preview-body iframe {
  width: 100%;
  height: 100%;
  border: none;
  background: white;
  border-radius: var(--border-radius-sm);
}

.preview-text {
  width: 100%;
  height: 100%;
  background: #ffffff;
  color: #155a96;
  padding: 16px;
  border-radius: var(--border-radius-sm);
  font-family: monospace;
  font-size: 0.9rem;
  overflow: auto;
  white-space: pre-wrap;
  border: 1px solid var(--panel-border);
  text-align: left;
}

.preview-unsupported {
  text-align: center;
  color: var(--text-muted);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  max-width: 360px;
  line-height: 1.45;
}

.preview-unsupported svg {
  opacity: 0.5;
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  z-index: 2000;
}

.toast {
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(10px);
  border: 1px solid var(--panel-border);
  border-radius: var(--border-radius-md);
  padding: 14px 20px;
  color: var(--text-main);
  box-shadow: 0 10px 25px rgba(0,0,0,0.3);
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 280px;
  max-width: 400px;
  animation: toastSlideIn 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  font-size: 0.9rem;
}

@keyframes toastSlideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

.toast.toast-success {
  border-left: 4px solid var(--success);
}
.toast.toast-error {
  border-left: 4px solid var(--danger);
}
.toast.toast-info {
  border-left: 4px solid var(--primary);
}

/* Footer */
.app-footer {
  height: 60px;
  border-top: 1px solid var(--panel-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 0.8rem;
  text-align: center;
}

body.hidden-workspace-route .app-footer {
  display: none;
}

/* Responsive Overrides */
@media (max-width: 1024px) {
  .cad-hero {
    grid-template-columns: 1fr;
    min-height: auto;
  }
  .model-viewer-card {
    max-width: 760px;
    width: 100%;
  }
  .dashboard-grid {
    grid-template-columns: 1fr;
  }
  .upload-card-inner {
    height: 200px;
  }
}

@media (max-width: 768px) {
  .app-container {
    padding: 0 12px;
  }
  .app-header {
    height: auto;
    min-height: 68px;
    padding: 14px 0;
    align-items: center;
    gap: 12px;
  }
  .header-actions {
    flex-shrink: 0;
  }
  .brand {
    font-size: 0.98rem;
    gap: 9px;
    line-height: 1.15;
    max-width: calc(100% - 118px);
  }
  .logo-icon {
    width: 26px;
    height: 26px;
    flex-shrink: 0;
  }
  .privacy-toggle {
    padding: 8px 10px;
    font-size: 0.72rem;
  }
  .privacy-toggle svg {
    width: 14px;
    height: 14px;
  }
  .main-content {
    padding: 18px 0 28px;
  }
  .cad-hero {
    gap: 26px;
    width: calc(100vw - 24px);
    max-width: calc(100vw - 24px);
    overflow: hidden;
  }
  .cad-hero > * {
    min-width: 0;
  }
  .cad-copy {
    width: calc(100vw - 24px);
    max-width: calc(100vw - 24px);
  }
  .cad-copy h1 {
    font-size: 2.1rem;
    line-height: 1.12;
    width: calc(100vw - 24px);
    max-width: calc(100vw - 24px);
  }
  .subtitle {
    font-size: 1rem;
    width: calc(100vw - 24px);
    max-width: calc(100vw - 24px);
    overflow-wrap: anywhere;
  }
  .cad-actions {
    flex-direction: column;
    margin-top: 22px;
  }
  .software-logo-row {
    grid-template-columns: 1fr;
    gap: 10px;
    width: calc(100vw - 24px);
    max-width: calc(100vw - 24px);
  }
  .software-logo-card {
    min-height: 62px;
    padding: 10px;
  }
  .software-mark {
    width: 38px;
    height: 38px;
  }
  .cad-actions .btn {
    width: 100%;
  }
  .model-viewer-card {
    border-radius: 12px;
    width: calc(100vw - 24px);
    max-width: calc(100vw - 24px);
    min-width: 0;
  }
  .viewer-toolbar {
    height: auto;
    min-height: 44px;
    padding: 10px 12px;
  }
  .viewer-toolbar strong {
    font-size: 0.72rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
  .model-canvas {
    min-height: 340px;
  }
  .blueprint-sheet {
    left: 18px;
    top: 18px;
    width: calc(100% - 36px);
    height: 190px;
  }
  .building-model {
    right: 8%;
    bottom: 26px;
    width: 54%;
    height: 150px;
    opacity: 0.95;
  }
  .model-base {
    height: 74px;
  }
  .model-block {
    bottom: 42px;
  }
  .block-a {
    width: 48px;
    height: 86px;
  }
  .block-b {
    width: 62px;
    height: 118px;
  }
  .block-c {
    width: 42px;
    height: 72px;
  }
  .model-roof {
    bottom: 158px;
    width: 84px;
    height: 24px;
  }
  .dimension,
  .section-mark {
    font-size: 0.62rem;
    padding: 2px 5px;
  }
  .dim-side {
    right: -30px;
  }
  .shortcut-header {
    display: block;
  }
  .shortcut-header strong {
    display: block;
    margin-top: 4px;
  }
  .shortcut-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .shortcut-grid div:nth-child(4n) {
    border-right: 1px solid var(--panel-border);
  }
  .shortcut-grid div:nth-child(2n) {
    border-right: none;
  }
  .cad-feature-grid {
    grid-template-columns: 1fr;
  }
  .hero-section h1 {
    font-size: 2rem;
  }
  .workspace-form-card,
  .unlock-card {
    padding: 24px 18px;
    border-radius: 12px;
  }
  .unlock-container {
    margin: 42px auto;
  }
  .dashboard-header {
    flex-direction: column;
    align-items: stretch;
    gap: 14px;
    margin-bottom: 18px;
  }
  .title-row {
    gap: 10px;
  }
  #db-ws-name {
    font-size: 1.7rem;
    line-height: 1.1;
    max-width: 100%;
    overflow-wrap: anywhere;
  }
  .expiry-badge {
    width: fit-content;
    max-width: 100%;
  }
  .ws-description {
    font-size: 0.88rem;
  }
  .ws-actions {
    margin-top: 10px;
    width: 100%;
    display: grid;
    grid-template-columns: 1fr 1fr;
  }
  #btn-lock-ws {
    grid-column: span 2;
  }
  .dashboard-grid {
    gap: 16px;
  }
  .upload-card-inner {
    height: auto;
    min-height: 184px;
  }
  .drop-zone-content {
    width: 100%;
    padding: 18px 14px;
  }
  .drop-zone-content h3 {
    font-size: 1rem;
  }
  .explorer-header {
    gap: 8px;
  }
  .bulk-actions-bar {
    gap: 6px;
    padding: 8px;
  }
  .bulk-actions-bar .btn {
    flex: 1 1 auto;
  }
  .selected-count {
    order: -1;
    width: 100%;
    margin-right: 0;
    padding: 0 2px;
  }
  #search-input {
    min-height: 42px;
    font-size: 0.9rem;
  }
  .files-list-card {
    min-height: 0;
    max-height: none;
    overflow: visible;
  }
  .files-list-header {
    display: none;
  }
  .files-list-body {
    overflow: visible;
  }
  .file-row {
    grid-template-columns: minmax(0, 1fr) auto;
    grid-template-areas:
      "name actions"
      "size actions"
      "date actions";
    gap: 5px 12px;
    padding: 14px;
    align-items: center;
    font-size: 0.86rem;
  }
  .file-name-cell {
    grid-area: name;
    min-width: 0;
    padding-right: 0;
  }
  .file-select-control {
    align-self: flex-start;
  }
  .file-size-cell {
    grid-area: size;
    font-size: 0.78rem;
  }
  .file-date-cell {
    grid-area: date;
    display: block;
    font-size: 0.78rem;
  }
  .file-actions-cell {
    grid-area: actions;
    align-self: center;
    justify-content: flex-end;
  }
  .form-row {
    grid-template-columns: 1fr;
    gap: 0;
  }
  .upload-buttons {
    flex-direction: column;
    width: 100%;
  }
  .upload-buttons .btn {
    width: 100%;
  }
  .preview-modal-content {
    width: calc(100% - 16px);
    height: 88dvh;
    max-height: 88dvh;
  }
  .preview-header {
    align-items: flex-start;
    gap: 12px;
    padding: 14px;
  }
  .preview-title-info {
    max-width: 100%;
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }
  .preview-header-actions {
    margin-right: 26px;
    gap: 8px;
  }
  .preview-body {
    padding: 14px;
  }
  .toast-container {
    left: 12px;
    right: 12px;
    bottom: 12px;
  }
  .toast {
    min-width: 0;
    max-width: none;
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .view,
  .toast,
  .modal-overlay,
  .modal-content {
    animation: none;
  }
}

@media (max-width: 600px) {
  .cad-copy h1 {
    width: 100%;
    max-width: 340px;
  }
  .subtitle {
    width: 100%;
    max-width: 350px;
  }
}

@media (max-width: 480px) {
  .app-container {
    padding: 0 10px;
  }
  .app-header {
    gap: 8px;
  }
  .brand {
    font-size: 0.86rem;
    max-width: calc(100% - 52px);
  }
  .brand .highlight {
    display: none;
  }
  .privacy-toggle {
    width: 42px;
    height: 42px;
    justify-content: center;
    padding: 0;
  }
  .privacy-toggle span {
    display: none;
  }
  .cad-copy h1 {
    font-size: 1.72rem;
  }
  .cad-eyebrow {
    font-size: 0.68rem;
  }
  .model-canvas {
    min-height: 320px;
  }
  .blueprint-sheet {
    height: 172px;
  }
  .shortcut-grid {
    grid-template-columns: 1fr;
  }
  .shortcut-grid div,
  .shortcut-grid div:nth-child(2n),
  .shortcut-grid div:nth-child(4n) {
    border-right: none;
  }
  .viewer-stats div {
    padding: 12px 10px;
  }
  .viewer-stats strong {
    font-size: 1rem;
  }
  .file-row {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas:
      "name"
      "size"
      "date"
      "actions";
    gap: 7px;
  }
  .file-actions-cell {
    gap: 4px;
    justify-content: flex-start;
  }
  .btn-sm {
    padding: 7px 10px;
  }
  .bulk-actions-bar .btn {
    flex: 1 1 100%;
  }
  .ws-actions {
    grid-template-columns: 1fr;
  }
  #btn-lock-ws {
    grid-column: auto;
  }
  .preview-header {
    flex-direction: column;
    padding-right: 48px;
  }
  .preview-header-actions {
    width: 100%;
    margin-right: 0;
  }
  #preview-btn-download {
    flex: 1;
    justify-content: center;
  }
}

/* Global Drag and Drop Overlay */
.global-drag-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(29, 112, 184, 0.15);
  backdrop-filter: blur(12px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.global-drag-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.global-drag-overlay.hide {
  display: none !important;
}

.drag-overlay-content {
  background: rgba(255, 255, 255, 0.95);
  border: 3px dashed var(--primary);
  border-radius: var(--border-radius-lg);
  padding: 50px;
  text-align: center;
  box-shadow: var(--card-shadow);
  transform: scale(0.9);
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  max-width: 500px;
  width: 90%;
}

.global-drag-overlay.active .drag-overlay-content {
  transform: scale(1);
}

.drag-overlay-icon {
  color: var(--primary);
  margin-bottom: 20px;
  animation: pulseIcon 1.5s infinite ease-in-out;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

@keyframes pulseIcon {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.drag-overlay-content h2 {
  font-family: var(--font-family-title);
  color: var(--text-main);
  margin-bottom: 10px;
  font-size: 24px;
}

.drag-overlay-content p {
  color: var(--text-muted);
  font-size: 14px;
}