/* ==========================================
   VariationLog — styles.css
   HIGH-CONTRAST CONSTRUCTION DARK MODE
   ========================================== */

:root {
  --bg-color:       #121212;   /* Matte black — zero glare outdoors */
  --card-bg:        #242424;   /* Lighter charcoal for subtle card separation */
  --card-bg-raised: #2C2C2C;   /* Slightly lighter still, for nested panels */
  --text-primary:   #FFFFFF;   /* Stark white body text */
  --text-secondary: #B3B3B3;   /* Muted gray for labels/meta */
  --text-3:         #7A7A7A;   /* Faint tertiary text (timestamps) */
  --accent-color:   #FFEE00;   /* Construction neon yellow */
  --accent-amber:   #FFB800;   /* Safety amber (secondary accent) */
  --accent-dark:    #C9BE00;   /* Pressed-state shade of neon yellow */
  --border-color:   #3A3A3A;   /* Soft hairline border, no harsh black lines */
  --border-strong:  #4A4A4A;
  --green:          #3DDC84;
  --green-bg:       rgba(61,220,132,0.12);
  --red:            #FF5C5C;
  --red-bg:         rgba(255,92,92,0.12);
  --blue:           #5B9BFF;
  --blue-bg:        rgba(91,155,255,0.12);
  --radius-sm:       10px;
  --radius-md:       16px;
  --radius-lg:       22px;
  --font-mono:       'Courier New', Courier, monospace;
  --tap-min:          54px;
  --shadow-card:      0 8px 28px rgba(0,0,0,0.5);
}

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

html { font-size: 16px; -webkit-text-size-adjust: 100%; }

body {
  background-color: var(--bg-color);
  color: var(--text-primary);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  padding-bottom: 60px;
}

h1, h2, h3 {
  color: var(--text-primary);
  font-weight: 800;
  letter-spacing: 0.01em;
}

/* ── Logo Banner ── */
.logo-banner {
  background-color: var(--bg-color);
  border-bottom: 1px solid var(--border-color);
}
.logo-banner-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px 16px;
  max-width: 600px;
  margin: 0 auto;
}
.logo-placeholder { display: flex; align-items: center; gap: 12px; }
.logo-placeholder svg rect { fill: var(--accent-color) !important; }
.logo-placeholder svg path { stroke: #121212 !important; }
.logo-text-block { display: flex; flex-direction: column; gap: 1px; }
.logo-company {
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  color: var(--text-primary);
  line-height: 1.1;
  text-transform: uppercase;
}
.logo-tagline {
  font-size: 0.7rem;
  color: var(--text-secondary);
  letter-spacing: 0.03em;
  font-style: italic;
}
.logo-badge {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  color: #121212;
  border-radius: var(--radius-sm);
  padding: 6px 12px;
  background: var(--accent-color);
}

/* ── Sticky Header ── */
.app-header {
  background-color: rgba(18,18,18,0.92);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 13px 20px;
  max-width: 600px;
  margin: 0 auto;
}
.header-brand { display: flex; align-items: center; gap: 10px; }
.brand-name {
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}
.brand-icon rect { fill: var(--accent-color) !important; }
.brand-icon path { stroke: #121212 !important; }

.export-btn {
  display: flex;
  align-items: center;
  gap: 7px;
  background-color: var(--accent-color);
  color: #121212;
  border: none;
  border-radius: var(--radius-sm);
  padding: 11px 18px;
  font-size: 0.88rem;
  font-weight: 700;
  cursor: pointer;
  min-height: var(--tap-min);
  transition: transform 0.1s, background-color 0.15s;
  -webkit-tap-highlight-color: transparent;
}
.export-btn:active { background-color: var(--accent-dark); transform: scale(0.97); }

/* ── Main Layout — fluid mobile, centered desktop ── */
.main-content {
  width: 100%;
  max-width: 600px;
  margin: 0 auto;
  padding: 24px 16px 0;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* ── Cards ── */
.card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px 20px;
  box-shadow: var(--shadow-card);
}
.card-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  color: var(--accent-amber);
  font-weight: 700;
  margin-bottom: 4px;
  text-transform: uppercase;
}
.card-title {
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--text-primary);
  margin-bottom: 20px;
}

/* ── Variation ID Preview ── */
.var-id-preview {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--card-bg-raised);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  margin-bottom: 22px;
}
.var-id-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: var(--text-secondary);
  font-weight: 700;
}
.var-id-value {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--accent-color);
  letter-spacing: 0.05em;
}

/* ── Form ── */
.form-group { margin-bottom: 20px; }

label, .field-label {
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-primary);
  display: block;
  margin-bottom: 8px;
  letter-spacing: 0.04em;
}
.alt-label {
  text-transform: none;
  letter-spacing: 0;
  font-style: italic;
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 500;
}

input, textarea, select, .field-input {
  width: 100%;
  padding: 15px 16px;
  font-size: 1.05rem;
  font-weight: 500;
  background-color: var(--card-bg-raised);
  color: var(--text-primary);
  border: 1.5px solid var(--border-strong);
  border-radius: var(--radius-sm);
  box-sizing: border-box;
  min-height: var(--tap-min);
  font-family: inherit;
  outline: none;
  transition: border-color 0.18s, box-shadow 0.18s;
  -webkit-appearance: none;
  appearance: none;
}
input::placeholder, textarea::placeholder { color: var(--text-3); }
input:focus, textarea:focus, select:focus {
  border-color: var(--accent-color);
  box-shadow: 0 0 0 3px rgba(255,238,0,0.25);
}
.field-textarea {
  resize: vertical;
  min-height: 110px;
  line-height: 1.55;
}

/* ── Template Chips (Quick-Tap Scope Buttons) ── */
.template-chips {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}
.chip-btn, .template-btn {
  background-color: var(--card-bg-raised);
  color: var(--text-primary);
  border: 1.5px solid var(--border-strong);
  padding: 11px 16px;
  font-size: 0.85rem;
  font-weight: 700;
  border-radius: 50px;
  cursor: pointer;
  min-height: var(--tap-min);
  display: flex;
  align-items: center;
  white-space: nowrap;
  transition: background-color 0.15s, border-color 0.15s, color 0.15s, transform 0.1s;
  -webkit-tap-highlight-color: transparent;
}
.chip-btn:active, .template-btn:active {
  background-color: var(--accent-color);
  color: #121212;
  border-color: var(--accent-color);
  transform: scale(0.96);
}
.chip-btn.chip-active {
  background-color: var(--accent-color);
  color: #121212;
  border-color: var(--accent-color);
}

/* $ prefix input */
.input-prefix-wrap { position: relative; display: flex; align-items: center; }
.input-prefix {
  position: absolute;
  left: 16px;
  color: var(--accent-color);
  font-weight: 800;
  font-size: 1.15rem;
  pointer-events: none;
  z-index: 1;
}
.field-input--prefixed {
  padding-left: 32px;
  font-variant-numeric: tabular-nums;
  font-size: 1.15rem;
  font-weight: 700;
}

/* ── Signature Canvas ── */
.sig-panel {
  background-color: var(--card-bg-raised);
  border: 1.5px solid var(--border-strong);
  border-radius: var(--radius-sm);
  overflow: hidden;
  position: relative;
}
.sig-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px 10px;
  border-bottom: 1px solid var(--border-color);
}
.sig-hint {
  font-size: 0.78rem;
  color: var(--text-secondary);
  font-style: italic;
}
.sig-clear-btn {
  background-color: transparent;
  border: 1.5px solid var(--border-strong);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.8rem;
  font-weight: 700;
  padding: 9px 16px;
  cursor: pointer;
  min-height: 40px;
  text-transform: uppercase;
  transition: border-color 0.15s, color 0.15s;
  -webkit-tap-highlight-color: transparent;
}
.sig-clear-btn:active { border-color: var(--red); color: var(--red); }

canvas, .sig-canvas {
  background-color: #1A1A1A;
  border: none;
  display: block;
  width: 100%;
  height: 190px;
  cursor: crosshair;
  touch-action: none;
}
.sig-baseline {
  position: absolute;
  bottom: 38px;
  left: 20px;
  right: 20px;
  height: 1px;
  background: repeating-linear-gradient(90deg, var(--text-3) 0, var(--text-3) 6px, transparent 6px, transparent 12px);
  opacity: 0.5;
  pointer-events: none;
}

/* ── Camera Upload ── */
.camera-upload-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  background-color: var(--card-bg-raised);
  border: 1.5px dashed var(--border-strong);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.97rem;
  font-weight: 700;
  padding: 18px 16px;
  cursor: pointer;
  min-height: var(--tap-min);
  transition: border-color 0.18s, background-color 0.18s;
  -webkit-tap-highlight-color: transparent;
}
.camera-upload-btn:active { border-color: var(--accent-color); background-color: rgba(255,238,0,0.07); }
.hidden-file-input { position: absolute; width: 1px; height: 1px; opacity: 0; pointer-events: none; }
.photo-preview-wrap { margin-top: 12px; position: relative; border-radius: var(--radius-sm); overflow: hidden; }
.photo-preview {
  display: block;
  width: 100%;
  max-height: 220px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--border-strong);
}
.remove-photo-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  background-color: rgba(18,18,18,0.85);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  color: var(--red);
  font-size: 0.78rem;
  font-weight: 700;
  padding: 8px 13px;
  cursor: pointer;
  min-height: 36px;
}
.hidden { display: none !important; }

/* ── Submit Button — premium neon construction accent ── */
.submit-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  background-color: var(--accent-color);
  color: #121212;
  border: none;
  padding: 19px;
  font-size: 1.08rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  border-radius: var(--radius-md);
  cursor: pointer;
  margin-top: 8px;
  min-height: 62px;
  box-shadow: 0 6px 24px rgba(255,238,0,0.25);
  transition: transform 0.1s, box-shadow 0.15s, background-color 0.15s;
  -webkit-tap-highlight-color: transparent;
}
.submit-btn:active {
  background-color: var(--accent-dark);
  transform: scale(0.98);
  box-shadow: 0 3px 12px rgba(255,238,0,0.18);
}

/* ── Toast ── */
.toast {
  margin-top: 16px;
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
  font-weight: 600;
  text-align: center;
}
.toast.success { background: var(--green-bg); border: 1px solid rgba(61,220,132,0.35); color: var(--green); }
.toast.error   { background: var(--red-bg);   border: 1px solid rgba(255,92,92,0.35);   color: var(--red); }

/* ── History ── */
.history-card { padding-bottom: 16px; }
.history-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 16px;
}
.history-count {
  background-color: var(--card-bg-raised);
  color: var(--accent-color);
  border: 1px solid var(--border-strong);
  border-radius: 20px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 700;
  padding: 5px 13px;
  margin-top: 6px;
  min-width: 36px;
  text-align: center;
}
.history-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  max-height: 560px;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  padding-right: 2px;
}
.history-list::-webkit-scrollbar { width: 5px; }
.history-list::-webkit-scrollbar-track { background: transparent; }
.history-list::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 4px; }

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 40px 20px;
  color: var(--text-3);
  text-align: center;
  font-size: 0.9rem;
  line-height: 1.55;
}

/* History Item */
.history-item {
  background-color: var(--card-bg-raised);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px;
}
.history-item-top {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
  margin-bottom: 12px;
}
.history-item-main { min-width: 0; }
.history-item-varid {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  color: #121212;
  background: var(--accent-color);
  display: inline-block;
  padding: 2px 9px;
  border-radius: 4px;
  margin-bottom: 6px;
}
.history-item-ref {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-bottom: 4px;
}
.history-item-desc {
  font-size: 0.86rem;
  color: var(--text-secondary);
  line-height: 1.45;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 8px;
}
.history-item-meta { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.history-item-time {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-3);
}
.history-item-has-sig, .history-item-has-photo {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  border-radius: 4px;
  padding: 2px 7px;
}
.history-item-has-sig   { background: rgba(255,238,0,0.12); color: var(--accent-color); border: 1px solid rgba(255,238,0,0.3); }
.history-item-has-photo { background: var(--green-bg); color: var(--green); border: 1px solid rgba(61,220,132,0.3); }
.history-item-cost {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--accent-color);
  text-align: right;
  white-space: nowrap;
  align-self: start;
}

/* Share Button */
.share-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  background-color: var(--blue-bg);
  border: 1.5px solid rgba(91,155,255,0.35);
  border-radius: var(--radius-sm);
  color: var(--blue);
  font-size: 0.88rem;
  font-weight: 700;
  padding: 13px 16px;
  cursor: pointer;
  min-height: var(--tap-min);
  letter-spacing: 0.01em;
  transition: background-color 0.15s, transform 0.1s;
  -webkit-tap-highlight-color: transparent;
}
.share-btn:active { background-color: rgba(91,155,255,0.25); transform: scale(0.98); }

/* ── Responsive tweaks ── */
@media (max-width: 400px) {
  .main-content { padding: 16px 12px 0; }
  .card { padding: 20px 14px; }
  .card-title { font-size: 1.2rem; }
  .submit-btn { font-size: 1rem; padding: 17px; }
  canvas, .sig-canvas { height: 160px; }
  .chip-btn, .template-btn { font-size: 0.8rem; padding: 10px 14px; }
  .logo-company { font-size: 0.9rem; }
}

@media (min-width: 601px) {
  body { background: radial-gradient(circle at top, #181818 0%, var(--bg-color) 60%); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition-duration: 0.01ms !important; }
}

/* ==========================================
   TRIAL / MONETIZATION UI
   ========================================== */

/* ── Trial Countdown Banner ── */
.trial-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background-color: var(--accent-color);
  color: #121212;
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  padding: 12px 16px calc(12px + env(safe-area-inset-bottom, 0px));
  border-top: 1px solid rgba(0,0,0,0.15);
  box-shadow: 0 -4px 16px rgba(0,0,0,0.35);
}
.trial-banner.trial-warning {
  background-color: var(--red);
  color: #FFFFFF;
}

/* ── Trial Expired Lockout Overlay ── */
.lockout-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background-color: rgba(10, 10, 10, 0.97);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  backdrop-filter: blur(6px);
}
.lockout-card {
  max-width: 420px;
  width: 100%;
  background: var(--card-bg);
  border: 1.5px solid var(--border-strong);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  text-align: center;
  box-shadow: 0 20px 60px rgba(0,0,0,0.6);
}
.lockout-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 76px;
  height: 76px;
  border-radius: 50%;
  background: var(--red-bg);
  color: var(--red);
  margin-bottom: 20px;
}
.lockout-title {
  font-size: 1.5rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  color: var(--text-primary);
  margin-bottom: 16px;
}
.lockout-text {
  font-size: 0.98rem;
  line-height: 1.6;
  color: var(--text-secondary);
}
.lockout-text strong {
  color: var(--accent-color);
  font-weight: 700;
}

/* Push main content above the fixed trial banner */
body.has-trial-banner { padding-bottom: 88px; }

/* Freeze background interaction while locked out */
body.is-locked-out { overflow: hidden; }
body.is-locked-out .logo-banner,
body.is-locked-out .app-header,
body.is-locked-out .main-content {
  filter: blur(2px);
  pointer-events: none;
  user-select: none;
}

/* ==========================================
   CUSTOM LOGO UPLOAD UI
   ========================================== */

.custom-logo-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  object-fit: cover;
  flex-shrink: 0;
  border: 1px solid var(--border-strong);
}

.customise-btn {
  cursor: pointer;
  border: none;
  font-family: inherit;
  transition: transform 0.1s, background-color 0.15s;
  -webkit-tap-highlight-color: transparent;
  white-space: nowrap;
}
.customise-btn:active {
  background-color: var(--accent-dark);
  transform: scale(0.96);
}