/* 
 * QR ARG Tool Styles
 * Inherits from template design system
 */

:root {
  --bg: #0c1020;
  --card: #151c3b;
  --ink: #eef1ff;
  --dim: #b9c6ef;
  --border: #2b3868;
  --accent: #1fc9aa;
  --accent-hover: #18b79a;
  --accent-dark: #17b399;
  --input-bg: #0f1432;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

a, a:visited, a:hover, a:active { color: inherit; }

/* HEADER (from template) */
.app-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 12px 12px;
}

.app-logo {
  max-width: 200px; 
  height: auto;
  margin: 0;
  display: block;
  object-fit: contain;
}

.app-title {
  font-size: 1.8rem;
  margin: 0;
  font-weight: 600;
  letter-spacing: 0.3px;
}

.app-subtitle {
  color: var(--dim);
  font-size: 0.9rem;
  font-style: italic;
  margin: 0 0 2px 0;
}

/* TAB NAVIGATION */
.tab-nav {
  display: flex;
  gap: 8px;
  margin: 16px 0 8px;
  padding: 0;
}

.tab-btn {
  background: var(--card);
  color: var(--dim);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 20px;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.9rem;
  letter-spacing: 0.3px;
  transition: all 0.15s ease;
}

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

.tab-btn.active {
  background: var(--accent);
  color: #0b0f14;
  border-color: var(--accent-dark);
  box-shadow: 0 2px 4px rgba(31, 201, 170, 0.2);
}

/* TAB CONTENT */
.tab-content {
  display: none;
  width: 100%;
  max-width: 760px;
}

.tab-content.active {
  display: block;
}

/* PANELS (from template) */
.panel {
  width: 92vw;
  max-width: 760px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: 0 10px 30px rgba(0,0,0,.35);
  padding: 20px;
  margin: 12px 0;
  text-align: left;
}

.section-title {
  margin: 0 0 12px 0;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.4px;
}

.row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 10px 0 0;
  justify-content: flex-start;
  align-items: flex-end;
}

/* FORM ELEMENTS (from template) */
label {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--dim);
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 150px;
}

label.full-width {
  width: 100%;
  min-width: 100%;
}

label.small-text {
  font-size: 0.75rem;
}

input[type="text"],
input[type="number"],
input[type="file"],
input[type="range"],
input[type="color"],
select,
textarea {
  background: var(--input-bg);
  border: 1px solid var(--border);
  color: var(--ink);
  border-radius: 6px;
  padding: 7px 8px;
  font-size: 0.85rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

input[type="color"] {
  height: 38px;
  padding: 2px;
  cursor: pointer;
}

input[type="range"] {
  padding: 0;
  height: 6px;
  flex: 1;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(31, 201, 170, 0.12);
}

button {
  background: var(--accent);
  color: #0b0f14;
  border: 1px solid var(--accent-dark);
  border-radius: 8px;
  padding: 10px 16px;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.9rem;
  letter-spacing: 0.3px;
  transition: all 0.15s ease;
  box-shadow: 0 2px 4px rgba(31, 201, 170, 0.2);
}

button:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 8px rgba(31, 201, 170, 0.3);
}

button:active {
  transform: translateY(0);
  box-shadow: 0 1px 2px rgba(31, 201, 170, 0.2);
}

button.secondary-btn {
  background: var(--card);
  color: var(--accent);
  border: 1px solid var(--accent);
}

button.secondary-btn:hover {
  background: var(--input-bg);
}

/* CHECKBOX */
.checkbox-label {
  flex-direction: row;
  align-items: center;
  gap: 8px;
  cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
  width: 18px;
  height: 18px;
  cursor: pointer;
  margin: 0;
}

/* RANGE VALUE DISPLAY */
.range-value {
  display: inline-block;
  min-width: 40px;
  text-align: center;
  color: var(--accent);
  font-weight: 600;
  font-size: 0.85rem;
}

/* FILE UPLOAD BUTTON */
.file-upload-btn {
  background: var(--accent);
  color: #0b0f14;
  border: 1px solid var(--accent-dark);
  border-radius: 8px;
  padding: 10px 16px;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.9rem;
  letter-spacing: 0.3px;
  transition: all 0.15s ease;
  box-shadow: 0 2px 4px rgba(31, 201, 170, 0.2);
  display: inline-block;
}

.file-upload-btn:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 8px rgba(31, 201, 170, 0.3);
}

/* QR PREVIEW */
.qr-preview-container {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 320px;
  padding: 20px;
  background: rgba(12, 16, 32, 0.15);
  border: 1px dashed rgba(185, 198, 239, 0.35);
  border-radius: 10px;
}

#qr-preview {
  display: flex;
  justify-content: center;
  align-items: center;
}

#qr-preview canvas {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
}

/* CAMERA READER */
#camera-reader {
  width: 100%;
  max-width: 500px;
  margin: 0 auto;
  border-radius: 10px;
  overflow: hidden;
  background: var(--input-bg);
}

#camera-reader video {
  width: 100%;
  height: auto;
  display: block;
}

/* OUTPUT AREA (from template) */
.output-area {
  background: rgba(12, 16, 32, 0.15);
  border: 1px dashed rgba(185, 198, 239, 0.35);
  border-radius: 10px;
  padding: 16px;
  color: var(--dim);
  font-size: 0.85rem;
  min-height: 90px;
  word-break: break-all;
}

.output-area.has-content {
  color: var(--ink);
  font-weight: 500;
}

/* INFO & WARNING BOXES */
.info-box,
.warning-box {
  padding: 12px 14px;
  border-radius: 8px;
  font-size: 0.82rem;
  margin-top: 12px;
  line-height: 1.5;
}

.info-box {
  background: rgba(31, 201, 170, 0.08);
  border: 1px solid rgba(31, 201, 170, 0.25);
  color: var(--ink);
}

.warning-box {
  background: rgba(255, 180, 0, 0.08);
  border: 1px solid rgba(255, 180, 0, 0.35);
  color: #ffc44d;
}

.info-box code {
  background: rgba(255, 255, 255, 0.1);
  padding: 2px 6px;
  border-radius: 3px;
  font-family: 'Courier New', monospace;
  font-size: 0.8rem;
}

.info-box kbd {
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-bottom-width: 2px;
  padding: 2px 6px;
  border-radius: 4px;
  font-family: 'Courier New', monospace;
  font-size: 0.75rem;
  font-weight: 600;
  box-shadow: 0 2px 0 rgba(0, 0, 0, 0.2);
  display: inline-block;
  min-width: 20px;
  text-align: center;
}

.info-box strong {
  color: var(--accent);
}

/* FOOTER / LICENSE (from template) */
.license-footer {
  margin-top: 30px;
  margin-bottom: 20px;
  padding: 10px 8px;
  font-size: 0.68rem;
  color: var(--dim);
  opacity: 0.7;
  cursor: pointer;
  transition: opacity 0.15s ease;
  text-align: center;
}

.license-footer:hover {
  opacity: 1;
}

.license-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  z-index: 999;
}

.license-modal {
  display: none;
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: var(--card);
  border: 2px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  max-width: 520px;
  width: 90%;
  max-height: 80vh;
  overflow-y: auto;
  box-shadow: 0 20px 60px rgba(0,0,0,.6);
  z-index: 1000;
  text-align: center;
}

.license-modal.show,
.license-overlay.show {
  display: block;
}

.license-modal-header {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  padding-right: 32px;
  gap: 12px;
}

.license-modal-title {
  margin: 0;
  font-size: 1rem;
  text-align: center;
  width: 100%;
}

.license-modal-close {
  position: absolute;
  top: 0;
  right: 0;
  cursor: pointer;
  font-size: 1.5rem;
  color: var(--dim);
  line-height: 1;
}

.small-muted {
  color: var(--dim);
  font-size: 0.7rem;
}

/* RESPONSIVE (from template) */
@media (max-width: 640px) {
  .panel {
    width: 95vw;
    padding: 16px 12px;
  }
  
  .row {
    gap: 8px 12px;
  }
  
  label {
    min-width: 120px;
  }
  
  button {
    width: fit-content;
  }
  
  .tab-nav {
    flex-direction: row;
    width: 95vw;
    justify-content: center;
  }
  
  .tab-btn {
    flex: 1;
    max-width: 160px;
  }
}