/* css/style.css */

/* ---------- Design tokens ---------- */
:root {
  --color-primary: #1a5632;
  --color-primary-dark: #0f3d22;
  --color-primary-light: #2d7a4a;
  --color-surface: #f5f7fa;
  --color-background: #ffffff;
  --color-border: #dde1e7;
  --color-text: #1a1a1a;
  --color-text-secondary: #555e6b;
  --color-success: #2e7d32;
  --color-error: #c62828;
  --color-warning: #e65100;
  --color-warning-bg: #fff3e0;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --shadow-card: 0 1px 4px rgba(0, 0, 0, 0.12), 0 0 1px rgba(0, 0, 0, 0.06);
  --shadow-modal: 0 8px 32px rgba(0, 0, 0, 0.28);
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-mono: 'SF Mono', 'Menlo', 'Consolas', 'Liberation Mono', monospace;
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --header-height: 56px;
}

/* ---------- Dark mode tokens ---------- */
@media (prefers-color-scheme: dark) {
  :root {
    --color-primary: #2d8a4e;
    --color-primary-dark: #1a5632;
    --color-primary-light: #4eba6f;
    --color-surface: #1e1e2e;
    --color-background: #141422;
    --color-border: #3a3a50;
    --color-text: #f0f0f8;
    --color-text-secondary: #b0b0c0;
    --color-success: #4caf50;
    --color-error: #ef5350;
    --color-warning: #ff9800;
    --color-warning-bg: #2a2010;
    --shadow-card: 0 1px 4px rgba(0, 0, 0, 0.4), 0 0 1px rgba(0, 0, 0, 0.2);
    --shadow-modal: 0 8px 32px rgba(0, 0, 0, 0.6);
  }

  .project-card:active,
  .sample-card:active {
    background: #252538;
  }

  .btn-danger:hover {
    background: rgba(239, 83, 80, 0.15);
  }

  .btn-remove-field:hover {
    background: rgba(239, 83, 80, 0.15);
    color: var(--color-error);
    border-color: var(--color-error);
  }

  #delete-project-btn {
    border-color: rgba(239, 83, 80, 0.4);
  }

  #delete-project-btn:hover {
    background: rgba(239, 83, 80, 0.15);
  }

  .gps-locking {
    color: #fbbf24;
  }

  .gps-locked {
    color: #86efac;
  }

  .gps-error {
    color: #fca5a5;
  }

  html {
    font-size: 18px;
  }

  .card, .sample-card {
    border-width: 2px;
  }

  input, select, textarea {
    border-width: 2px;
  }

  .btn-primary, .btn-secondary, .btn-danger {
    font-weight: 600;
    min-height: 52px;
  }
}

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

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  color-scheme: light dark;
}

body {
  font-family: var(--font-sans);
  background: var(--color-background);
  color: var(--color-text);
  line-height: 1.5;
  min-height: 100dvh;
  overscroll-behavior-y: none;
}

img,
svg {
  display: block;
  max-width: 100%;
}

button {
  font-family: inherit;
  font-size: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

input,
textarea,
select {
  font-family: inherit;
  font-size: 1rem;
}

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

/* ---------- Layout ---------- */
#app {
  max-width: 600px;
  margin: 0 auto;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  padding-bottom: env(safe-area-inset-bottom, 0px);
}

/* ---------- Header ---------- */
.app-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  background: var(--color-primary);
  border-bottom: none;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 var(--spacing-md);
  padding-top: env(safe-area-inset-top, 0px);
}

.app-header h1 {
  font-size: 1.125rem;
  font-weight: 600;
  text-align: center;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
  color: #ffffff;
  /* Prevent overlap with absolute-positioned GPS pill + More button on wider screens */
  padding-right: 140px;
  padding-left: 60px;
}

/* Hide the header-level back-btn and action-btn (we use view-level ones now) */
.app-header .btn-back,
.app-header .btn-icon {
  display: none;
}

/* ---------- View container ---------- */
.view {
  display: none;
  flex: 1;
  padding: 12px;
  padding-left: max(12px, env(safe-area-inset-left, 0px));
  padding-right: max(12px, env(safe-area-inset-right, 0px));
  animation: fadeIn 0.12s ease;
}

.view.active {
  display: block;
}

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

/* ---------- Buttons ---------- */
.btn-primary,
.btn-secondary,
.btn-danger,
.btn-large,
.btn-back,
.btn-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 var(--spacing-md);
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.9375rem;
  transition: background 0.12s, opacity 0.12s, transform 0.08s;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.btn-primary {
  background: var(--color-primary);
  color: #ffffff;
}

.btn-primary:hover {
  background: var(--color-primary-dark);
}

.btn-primary:active {
  transform: scale(0.97);
  opacity: 0.9;
}

.btn-primary:disabled {
  background: var(--color-border);
  color: var(--color-text-secondary);
  cursor: not-allowed;
}

.btn-secondary {
  background: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

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

.btn-secondary:active {
  transform: scale(0.97);
  opacity: 0.85;
}

.btn-danger {
  background: transparent;
  color: var(--color-error);
  border: 1.5px solid var(--color-error);
}

.btn-danger:hover {
  background: #fdecea;
}

.btn-danger:active {
  transform: scale(0.97);
  opacity: 0.8;
}

.btn-large {
  width: 100%;
  height: 56px;
  font-size: 1.125rem;
  border-radius: var(--radius-lg);
}

/* ---------- Back buttons inside views ---------- */
/* Positioned fixed in the header bar, right side */
.view .btn-back {
  position: fixed;
  top: 0;
  left: max(var(--spacing-md), calc((100vw - 600px) / 2 + var(--spacing-md)));
  height: var(--header-height);
  padding-top: env(safe-area-inset-top, 0px);
  z-index: 101;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0;
  padding-left: var(--spacing-sm);
  padding-right: var(--spacing-sm);
  font-size: 0;
  line-height: 1;
  color: #ffffff;
  border-radius: 0;
  width: auto;
  min-width: 44px;
  min-height: var(--header-height);
  margin-bottom: 0;
}

.view .btn-back::before {
  content: '\2190';
  font-size: 1.125rem;
  line-height: 1;
  color: #ffffff;
}

.view .btn-back::after {
  content: 'back';
  font-size: 0.55rem;
  font-weight: 500;
  color: #ffffff;
  line-height: 1;
  margin-top: 1px;
  text-transform: lowercase;
  letter-spacing: 0.02em;
}

.view .btn-back:hover {
  background: rgba(255, 255, 255, 0.12);
}

.view .btn-back:active {
  opacity: 0.7;
}

.btn-icon {
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: 50%;
  font-size: 1.25rem;
  color: var(--color-text);
}

.btn-icon:hover {
  background: var(--color-surface);
}

.btn-icon:active {
  transform: scale(0.95);
  opacity: 0.8;
}

/* ---------- Cards ---------- */
.project-card,
.sample-card {
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-sm) var(--spacing-md);
  box-shadow: var(--shadow-card);
  cursor: pointer;
  transition: background 0.1s, transform 0.08s;
  -webkit-tap-highlight-color: transparent;
  margin-bottom: 6px;
}

/* Project card: left accent border */
.project-card,
.project-card.card {
  border-left: 4px solid var(--color-primary);
}

.project-card:hover,
.sample-card:hover {
  background: var(--color-surface);
}

.project-card:active,
.sample-card:active {
  transform: scale(0.97);
  background: #eaecf0;
}

.project-card h2 {
  font-size: 0.9375rem;
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

/* Sample card: strong element for sample ID */
.sample-card strong {
  display: block;
  margin-bottom: 2px;
}

/* Sample card layout */
.sample-card .sample-id {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text);
  display: block;
  margin-bottom: 2px;
}

.sample-card .sample-date {
  display: block;
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-xs);
  margin-top: 2px;
}

.sample-card .sample-preview {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  line-height: 1.4;
  margin: 0;
}

.sample-card .sample-meta {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
}

.card-meta {
  color: var(--color-text-secondary);
  font-size: 0.8125rem;
  margin-bottom: var(--spacing-xs);
}

.card-date {
  color: var(--color-text-secondary);
  font-size: 0.75rem;
  margin: 0;
}

/* ---------- Field tags ---------- */
.field-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-top: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.field-tag {
  background: var(--color-primary);
  color: #ffffff;
  border-radius: 16px;
  padding: 2px 10px;
  font-size: 0.75rem;
  font-weight: 500;
  white-space: nowrap;
}

/* ---------- Forms (global) ---------- */
.form-field {
  margin-bottom: var(--spacing-md);
}

.form-field label {
  display: block;
  font-weight: 600;
  font-size: 1.8rem;
  margin-bottom: 10px;
  color: var(--color-text);
}

.form-field input[type='text'],
.form-field input[type='number'],
.form-field textarea {
  width: 100%;
  height: 64px;
  padding: 0 18px;
  font-size: 1.6rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-background);
  color: var(--color-text);
  transition: border-color 0.12s;
}

.form-field textarea {
  height: auto;
  padding: 10px 12px;
  resize: vertical;
}

.form-field input:focus,
.form-field textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(26, 86, 50, 0.15);
}

.readonly-value {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--color-text);
  word-break: break-all;
}

.form-actions {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-lg);
}

.form-actions .btn-primary,
.form-actions .btn-secondary,
.form-actions .btn-danger {
  width: 100%;
}

/* ---------- Error messages ---------- */
.error-message {
  color: var(--color-error);
  font-size: 0.875rem;
  margin-top: -6px;
  margin-bottom: var(--spacing-sm);
}

/* ---------- Home view ---------- */
#home-actions {
  position: fixed;
  top: 0;
  left: max(var(--spacing-md), calc((100vw - 600px) / 2 + var(--spacing-md)));
  height: var(--header-height);
  padding-top: env(safe-area-inset-top, 0px);
  z-index: 101;
  display: flex;
  align-items: center;
  gap: 6px;
}

.header-action-btn {
  width: auto;
  height: 30px;
  min-height: 30px;
  font-size: 0.7rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  padding: 0 10px;
  background: #ffffff;
  color: var(--color-primary);
}

.header-action-btn:hover {
  background: rgba(255, 255, 255, 0.85);
}

.header-action-btn:active {
  transform: scale(0.95);
  opacity: 0.9;
}

/* Full/short label swap for mobile */
.btn-label-short {
  display: none;
}

@media (max-width: 480px) {
  .btn-label-full {
    display: none;
  }
  .btn-label-short {
    display: inline;
  }
  .gps-text-prefix {
    display: none;
  }
}

/* ---------- Empty state ---------- */
.empty-state {
  display: block;
  width: 100%;
  text-align: center;
  color: var(--color-text-secondary);
  padding: var(--spacing-xl) var(--spacing-md);
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  margin-top: var(--spacing-md);
  font-family: inherit;
  background: transparent;
}

/* Empty-state rendered as a clickable New Project CTA. */
button.empty-state,
.empty-state-cta {
  cursor: pointer;
  transition: border-color 0.12s, color 0.12s, background 0.12s;
}

button.empty-state:hover,
.empty-state-cta:hover {
  border-color: var(--color-primary);
  color: var(--color-text);
  background: rgba(26, 86, 50, 0.06);
}

button.empty-state:active,
.empty-state-cta:active {
  opacity: 0.8;
}

@media (prefers-color-scheme: dark) {
  button.empty-state:hover,
  .empty-state-cta:hover {
    background: rgba(45, 138, 78, 0.12);
  }
}

.empty-state p + p {
  margin-top: var(--spacing-xs);
  font-size: 0.8125rem;
}

/* ---------- Dashboard ---------- */
#dashboard-title {
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--spacing-sm);
}

.dashboard-actions {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

/* Sample count as section label */
#sample-count {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

/* Primary scan button: full-width, large, green */
#scan-btn {
  width: 100%;
  height: 54px;
  font-size: 1rem;
  background: var(--color-primary);
  color: #ffffff;
  border-radius: var(--radius-lg);
}

#scan-btn:hover {
  background: var(--color-primary-dark);
}

#scan-btn:active {
  transform: scale(0.97);
  opacity: 0.9;
}

/* Export button: in toolbar, matches secondary style */
#export-btn {
  min-height: 40px;
  height: 40px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  width: auto;
  padding: 0 var(--spacing-md);
}

#export-btn:hover {
  background: var(--color-border);
  color: var(--color-text);
}

#export-btn:active {
  transform: scale(0.97);
  opacity: 0.85;
}

/* Dashboard bottom toolbar */
.dashboard-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--color-border);
}

/* Edit/Delete project: inline toolbar */
#edit-project-btn {
  min-height: 40px;
  height: 40px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  width: auto;
  padding: 0 var(--spacing-md);
}

#edit-project-btn:hover {
  background: var(--color-border);
  color: var(--color-text);
}

#edit-project-btn:active {
  transform: scale(0.97);
  opacity: 0.85;
}

/* ---------- Delete project button + countdown animation ---------- */
@property --countdown-angle {
  syntax: '<angle>';
  initial-value: 360deg;
  inherits: false;
}

#delete-project-btn {
  min-height: 40px;
  height: 40px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-error);
  background: transparent;
  border: 1px solid rgba(239, 83, 80, 0.4);
  border-radius: var(--radius-sm);
  width: auto;
  padding: 0 var(--spacing-md);
  position: relative;
  overflow: hidden;
  isolation: isolate;
}

#delete-project-btn:hover {
  background: #fdecea;
}

#delete-project-btn:active {
  transform: scale(0.97);
  opacity: 0.8;
}

#delete-project-btn.confirming {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--color-error);
  border-color: transparent;
}

#delete-project-btn.confirming::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1.5px;
  background: conic-gradient(from 90deg, var(--color-error) var(--countdown-angle), transparent var(--countdown-angle));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  animation: borderCountdown 5s linear forwards;
  pointer-events: none;
}

@keyframes borderCountdown {
  from { --countdown-angle: 360deg; }
  to   { --countdown-angle: 0deg; }
}

/* ---------- Section headings ---------- */
.section-title {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-sm);
  margin-top: var(--spacing-lg);
}

/* ---------- Sample detail view ---------- */
.detail-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--color-border);
}

#edit-sample-btn {
  min-height: 40px;
  height: 40px;
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0 var(--spacing-md);
  color: var(--color-text-secondary);
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  width: auto;
}

/* ---------- Delete sample button + countdown animation ---------- */
#delete-sample-btn {
  width: auto;
  min-height: 40px;
  height: 40px;
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0 var(--spacing-md);
  position: relative;
  overflow: hidden;
  isolation: isolate;
}

#delete-sample-btn.confirming {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--color-error);
  border-color: transparent;
}

#delete-sample-btn.confirming::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1.5px;
  background: conic-gradient(from 90deg, var(--color-error) var(--countdown-angle), transparent var(--countdown-angle));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  animation: borderCountdown 5s linear forwards;
  pointer-events: none;
}

/* Definition-list style detail rows */
.detail-row {
  display: flex;
  flex-direction: column;
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid var(--color-border);
}

.detail-row:last-of-type {
  border-bottom: none;
}

.detail-label {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--color-text-secondary);
  margin-bottom: 2px;
}

.detail-value {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text);
}

/* ---------- Project form ---------- */
#project-form {
  display: flex;
  flex-direction: column;
}

#project-form .section-title {
  margin-top: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
}

/* ---------- Project form: field rows ---------- */
.field-row {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-sm);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--spacing-sm);
}

.field-row input {
  flex: 1;
  min-width: 0;
  height: 36px;
  padding: 0 10px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-background);
  font-size: 0.9375rem;
  color: var(--color-text);
  margin-bottom: 0;
}

.field-row input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px rgba(26, 86, 50, 0.12);
}

/* Small icon buttons within field rows */
.btn-move-up,
.btn-move-down,
.btn-remove-field {
  width: 36px;
  min-width: 36px;
  height: 36px;
  min-height: 36px;
  padding: 0;
  border-radius: var(--radius-sm);
  font-size: 0.65rem;
  border: 1px solid var(--color-border);
  background: var(--color-background);
  color: var(--color-text-secondary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.btn-move-up:hover,
.btn-move-down:hover {
  background: var(--color-surface);
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-remove-field:hover {
  background: #fdecea;
  color: var(--color-error);
  border-color: var(--color-error);
}

.btn-move-up:active,
.btn-move-down:active,
.btn-remove-field:active {
  transform: scale(0.94);
  opacity: 0.8;
}

/* Add field button: full-width secondary */
#add-field-btn {
  width: 100%;
  margin-top: var(--spacing-xs);
  margin-bottom: var(--spacing-md);
  border-style: dashed;
  color: var(--color-primary);
  border-color: var(--color-primary);
  background: transparent;
}

#add-field-btn:hover {
  background: rgba(26, 86, 50, 0.06);
}

/* Save project button */
#save-project-btn {
  width: 100%;
  margin-top: var(--spacing-sm);
}

/* ---------- Scanner / sample entry ---------- */
.scanner-container,
#scanner-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  background: #111;
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: var(--spacing-md);
}

#qr-reader {
  width: 100%;
  max-width: 400px;
  margin: 0 auto;
  border-radius: var(--radius-md);
  overflow: hidden;
}

#qr-reader video {
  border-radius: var(--radius-md);
}

#manual-entry-btn {
  width: 100%;
  margin-bottom: var(--spacing-md);
}

/* ---------- Modal / export dialog ---------- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-md);
}

/* .modal-dialog is the actual card (NOT .modal-content) */
.modal-dialog {
  background: var(--color-background);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  max-width: 360px;
  width: 100%;
  box-shadow: var(--shadow-modal);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.modal-dialog h2 {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: var(--spacing-xs);
}

.modal-dialog p {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-xs);
}

/* Keep .modal-content working as fallback */
.modal-content {
  background: var(--color-background);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  max-width: 400px;
  width: 100%;
  box-shadow: var(--shadow-modal);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.modal-content h2 {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: var(--spacing-xs);
}

.modal-content p {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-sm);
}

.modal-content .btn-primary,
.modal-content .btn-secondary,
.modal-dialog .btn-primary,
.modal-dialog .btn-secondary {
  width: 100%;
}

/* Export dialog button column */
.modal-btn-row {
  display: flex !important;
  flex-direction: column !important;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-xs);
}

.modal-btn-row .btn-primary,
.modal-btn-row .btn-secondary,
.modal-btn-row .btn-danger {
  width: 100% !important;
  min-width: 0 !important;
}

.export-count {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  text-align: center;
  margin-bottom: var(--spacing-xs);
}

/* ---------- Toast ---------- */
.toast {
  position: fixed;
  top: calc(var(--header-height) + 8px + env(safe-area-inset-top, 0px));
  left: 50%;
  transform: translateX(-50%);
  padding: 12px 20px 12px 16px;
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  font-weight: 500;
  z-index: 1001;
  white-space: nowrap;
  pointer-events: none;
  animation: toastIn 0.18s ease, toastOut 0.3s ease 2.7s forwards;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.toast::before {
  font-size: 1rem;
  flex-shrink: 0;
}

.toast-success,
.toast.success {
  background: var(--color-success);
  color: #ffffff;
}

.toast-success::before,
.toast.success::before {
  content: '\2713';
}

.toast-error,
.toast.error {
  background: var(--color-error);
  color: #ffffff;
}

.toast-error::before,
.toast.error::before {
  content: '\2715';
}

.toast-warning,
.toast.warning {
  background: var(--color-warning-bg);
  color: var(--color-warning);
  border: 1px solid var(--color-warning);
}

.toast-warning::before,
.toast.warning::before {
  content: '\26A0';
}

@keyframes toastIn {
  from { opacity: 0; transform: translateX(-50%) translateY(-8px); }
  to   { opacity: 1; transform: translateX(-50%) translateY(0);    }
}

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

/* ---------- GPS warning ---------- */
.gps-unavailable {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  color: var(--color-warning);
  font-size: 0.875rem;
  font-weight: 500;
  padding: var(--spacing-xs) var(--spacing-sm);
  background: var(--color-warning-bg);
  border-radius: var(--radius-sm);
}

.gps-unavailable::before {
  content: '';
  display: inline-block;
  width: 0;
  height: 0;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-bottom: 9px solid var(--color-warning);
  flex-shrink: 0;
}

/* ---------- Stats / summary row ---------- */
.stats-row {
  display: flex;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.stat-chip {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-text-secondary);
}

/* ---------- Coordinate display ---------- */
.coord-value {
  font-family: var(--font-mono);
  font-size: 0.875rem;
}

.no-location {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  font-style: italic;
}

/* ---------- Accessibility ---------- */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* ---------- Responsive: narrow phones ---------- */
@media (max-width: 360px) {
  :root {
    --spacing-md: 12px;
    --spacing-lg: 20px;
  }

  .app-header h1 {
    font-size: 1rem;
  }

  .btn-large {
    font-size: 1rem;
    height: 52px;
  }
}

/* ---------- Field Type Toggle ---------- */
.btn-field-type {
  width: 36px;
  height: 36px;
  border-radius: 6px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text-secondary);
  font-size: 12px;
  cursor: pointer;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.field-type-checkbox {
  background: #14532d;
  border-color: #4ade80;
  color: #4ade80;
  font-size: 16px;
}

/* ---------- Checkbox Field in Sample Entry ---------- */
.checkbox-field {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 0;
}

.checkbox-field input[type="checkbox"] {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  accent-color: var(--color-primary);
}

.checkbox-label {
  font-size: 1.8rem;
  cursor: pointer;
  min-width: 0;
  overflow-wrap: anywhere;
}

/* ---------- Template Button ---------- */

/* ---------- Photo Prompt ---------- */
.photo-prompt {
  text-align: center;
  padding: 32px 16px;
}

.photo-prompt p {
  font-size: 16px;
  margin-bottom: 16px;
}

.photo-prompt-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
}

.photo-btn-row {
  display: flex;
  gap: 8px;
  margin-top: 8px;
}

/* ---------- GPS Pill ---------- */
.gps-pill {
  display: flex;
  align-items: center;
  gap: 4px;
  position: absolute;
  right: var(--spacing-md);
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 0.65rem;
  width: fit-content;
  transition: opacity 0.5s ease;
  background: rgba(255, 255, 255, 0.15);
  color: #ffffff;
}

.gps-pill-hidden {
  opacity: 0;
  pointer-events: none;
}

.gps-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  display: inline-block;
  flex-shrink: 0;
}

.gps-locking .gps-dot {
  background: #fbbf24;
  animation: gps-pulse 1.5s infinite;
}

.gps-locking {
  color: #fef3c7;
}

.gps-locked .gps-dot {
  background: #86efac;
}

.gps-locked {
  color: #dcfce7;
}

.gps-error .gps-dot {
  background: #fca5a5;
}

.gps-error {
  color: #fecaca;
}

@keyframes gps-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* ---------- Responsive: landscape / constrain ---------- */
@media (orientation: landscape) and (max-height: 500px) {
  #app {
    max-width: 480px;
  }

  .view {
    padding-top: var(--spacing-sm);
  }
}

/* ---------- More button (header) ---------- */
.more-btn {
  position: absolute;
  right: var(--spacing-md);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 36px;
  padding: 0 var(--spacing-md);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.18);
  color: #ffffff;
  font-size: 0.875rem;
  font-weight: 600;
  border: 1.5px solid rgba(255, 255, 255, 0.35);
  cursor: pointer;
  transition: background 0.12s, opacity 0.12s;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}

.more-btn:hover {
  background: rgba(255, 255, 255, 0.28);
}

.more-btn:active {
  opacity: 0.8;
}

/* Shift GPS pill left of the More button to prevent overlap */
.app-header .gps-pill {
  right: calc(var(--spacing-md) + 64px);
}

/* ---------- More modal ---------- */
.more-modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 1100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-md);
}

.more-modal {
  background: var(--color-background);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  max-width: 340px;
  width: 100%;
  box-shadow: var(--shadow-modal);
  display: flex;
  flex-direction: column;
  gap: 0;
}

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

.more-modal-header h2 {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-text);
}

.more-modal-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  font-size: 1.25rem;
  color: var(--color-text-secondary);
  background: transparent;
  border: none;
  cursor: pointer;
  transition: background 0.12s;
  -webkit-tap-highlight-color: transparent;
}

.more-modal-close:hover {
  background: var(--color-surface);
}

.more-modal-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.more-modal-list li + li {
  border-top: 1px solid var(--color-border);
}

.more-modal-item {
  display: flex;
  align-items: center;
  width: 100%;
  min-height: 52px;
  padding: 0 var(--spacing-sm);
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-text);
  background: transparent;
  border: none;
  text-align: left;
  cursor: pointer;
  transition: background 0.1s;
  -webkit-tap-highlight-color: transparent;
}

.more-modal-item:hover {
  background: var(--color-surface);
}

.more-modal-item:active {
  background: var(--color-border);
}

/* ---------- Offline status pill ---------- */
.offline-status {
  display: inline-flex;
  align-items: center;
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: 20px;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: var(--spacing-md);
}

.offline-status.ready {
  background: rgba(46, 125, 50, 0.15);
  color: var(--color-success);
  border: 1.5px solid var(--color-success);
}

.offline-status.not-ready {
  background: rgba(198, 40, 40, 0.1);
  color: var(--color-error);
  border: 1.5px solid var(--color-error);
}

/* ---------- Offline guide view ---------- */
.offline-guide {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  padding-top: var(--spacing-md);
}

.offline-guide-title {
  font-size: 1.25rem;
  font-weight: 700;
}

.install-steps-heading {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-top: var(--spacing-sm);
}

.install-step {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  border: 1px solid var(--color-border);
}

.install-step-number {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #ffffff;
  font-size: 0.875rem;
  font-weight: 700;
}

.install-step-text {
  font-size: 1rem;
  line-height: 1.5;
  color: var(--color-text);
  padding-top: 2px;
}

.troubleshoot-section {
  margin-top: var(--spacing-sm);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.troubleshoot-heading {
  font-size: 1rem;
  font-weight: 600;
}

.troubleshoot-browser {
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--color-text);
  margin-bottom: 0;
}

.troubleshoot-steps {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

/* ---------- About view ---------- */
.about-info {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  padding-top: var(--spacing-md);
}

.about-app-name {
  font-size: 1.5rem;
  font-weight: 700;
}

.about-version {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
}

.about-description {
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
}

.about-link-row {
  margin-top: var(--spacing-sm);
}

.about-link-row a {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- Theme overrides ---------- */
/* When data-theme="auto" (default), prefers-color-scheme in existing CSS handles everything.
   These overrides only activate for explicit light/dark selection.
   This is compatible with iOS/Android system dark mode -- "auto" defers to the OS. */
[data-theme="light"] {
  --color-primary: #1a5632;
  --color-primary-dark: #0f3d22;
  --color-primary-light: #2d7a4a;
  --color-surface: #f5f7fa;
  --color-background: #ffffff;
  --color-border: #dde1e7;
  --color-text: #1a1a1a;
  --color-text-secondary: #555e6b;
  --color-success: #2e7d32;
  --color-error: #c62828;
  --color-warning: #e65100;
  --color-warning-bg: #fff3e0;
  --shadow-card: 0 1px 4px rgba(0, 0, 0, 0.12), 0 0 1px rgba(0, 0, 0, 0.06);
  --shadow-modal: 0 8px 32px rgba(0, 0, 0, 0.28);
  color-scheme: light;
}

[data-theme="dark"] {
  --color-primary: #2d8a4e;
  --color-primary-dark: #1a5632;
  --color-primary-light: #4eba6f;
  --color-surface: #1e1e2e;
  --color-background: #141422;
  --color-border: #3a3a50;
  --color-text: #f0f0f8;
  --color-text-secondary: #b0b0c0;
  --color-success: #4caf50;
  --color-error: #ef5350;
  --color-warning: #ff9800;
  --color-warning-bg: #2a2010;
  --shadow-card: 0 1px 4px rgba(0, 0, 0, 0.4), 0 0 1px rgba(0, 0, 0, 0.2);
  --shadow-modal: 0 8px 32px rgba(0, 0, 0, 0.6);
  color-scheme: dark;
}

/* Dark theme active states that were previously only in @media prefers-color-scheme */
[data-theme="dark"] .project-card:active,
[data-theme="dark"] .sample-card:active {
  background: #252538;
}

[data-theme="dark"] .btn-danger:hover {
  background: rgba(239, 83, 80, 0.15);
}

[data-theme="dark"] .btn-remove-field:hover {
  background: rgba(239, 83, 80, 0.15);
  color: var(--color-error);
  border-color: var(--color-error);
}

[data-theme="dark"] #delete-project-btn {
  border-color: rgba(239, 83, 80, 0.4);
}

[data-theme="dark"] #delete-project-btn:hover {
  background: rgba(239, 83, 80, 0.15);
}

[data-theme="dark"] .gps-locking { color: #fbbf24; }
[data-theme="dark"] .gps-locked { color: #86efac; }
[data-theme="dark"] .gps-error { color: #fca5a5; }

[data-theme="dark"] .card,
[data-theme="dark"] .sample-card {
  border-width: 2px;
}

[data-theme="dark"] input,
[data-theme="dark"] select,
[data-theme="dark"] textarea {
  border-width: 2px;
}

/* ---------- UI Scale (sample entry form) ---------- */
:root {
  --ui-scale: 1;
}

[data-view="sample-entry"] .form-field label,
[data-view="sample-edit"] .form-field label {
  font-size: calc(1rem * var(--ui-scale));
}

[data-view="sample-entry"] .form-field input[type="text"],
[data-view="sample-entry"] .form-field input[type="datetime-local"],
[data-view="sample-entry"] .form-field textarea,
[data-view="sample-edit"] .form-field input[type="text"],
[data-view="sample-edit"] .form-field input[type="datetime-local"],
[data-view="sample-edit"] .form-field textarea {
  font-size: calc(1rem * var(--ui-scale));
  min-height: calc(48px * var(--ui-scale));
  padding: calc(var(--spacing-sm) * var(--ui-scale)) var(--spacing-md);
}

[data-view="sample-entry"] .checkbox-field,
[data-view="sample-edit"] .checkbox-field {
  transform: scale(var(--ui-scale));
  transform-origin: left center;
}

[data-view="sample-entry"] .readonly-value,
[data-view="sample-edit"] .readonly-value {
  font-size: calc(1rem * var(--ui-scale));
}

[data-view="sample-entry"] #gps-value,
[data-view="sample-edit"] #edit-gps-value {
  font-size: calc(0.9375rem * var(--ui-scale));
}

/* ---------- Settings page ---------- */
.settings-page {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  padding-top: var(--spacing-md);
}

.settings-title {
  font-size: 1.25rem;
  font-weight: 700;
}

.settings-section {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.settings-section-title {
  font-size: 1rem;
  font-weight: 600;
}

.settings-description {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

.settings-toggle-group {
  display: flex;
  gap: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.settings-toggle-btn {
  flex: 1;
  min-height: 44px;
  padding: 0 var(--spacing-md);
  font-size: 0.9375rem;
  font-weight: 500;
  background: var(--color-background);
  color: var(--color-text);
  border: none;
  cursor: pointer;
  transition: background 0.12s;
  -webkit-tap-highlight-color: transparent;
}

.settings-toggle-btn + .settings-toggle-btn {
  border-left: 1px solid var(--color-border);
}

.settings-toggle-btn.active {
  background: var(--color-primary);
  color: #ffffff;
  font-weight: 600;
}

.settings-toggle-btn:not(.active):hover {
  background: var(--color-surface);
}

.settings-scale-controls {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.settings-scale-btn {
  width: 48px;
  min-height: 48px;
  font-size: 1.25rem;
  font-weight: 700;
  padding: 0;
}

.settings-scale-btn#scale-reset-btn {
  width: auto;
  padding: 0 var(--spacing-md);
  font-size: 0.875rem;
  font-weight: 500;
}

.settings-scale-value {
  font-size: 1.125rem;
  font-weight: 600;
  min-width: 60px;
  text-align: center;
  color: var(--color-text);
}

.settings-changelog-btn {
  width: 100%;
}

/* ---------- Changelog page ---------- */
.changelog-page {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  padding-top: var(--spacing-md);
}

.changelog-title {
  font-size: 1.25rem;
  font-weight: 700;
}

.changelog-loading,
.changelog-empty {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
}

.changelog-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.changelog-entry {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-sm) var(--spacing-md);
}

.changelog-meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-xs);
}

.changelog-sha {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-primary);
  font-weight: 600;
}

.changelog-date {
  font-size: 0.75rem;
  color: var(--color-text-secondary);
}

.changelog-message {
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--color-text);
}