/* Styles for Certificate Decoder Online Tool App */

:root {
  --bg-color: #f8fafc;
  --text-color: #0f172a;
  --card-bg: #ffffff;
  --border-color: #e2e8f0;
  --input-bg: #ffffff;
  --input-border: #cbd5e1;
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-bg: #eff6ff;
  --success: #16a34a;
  --success-bg: #f0fdf4;
  --warning: #d97706;
  --warning-bg: #fffbeb;
  --danger: #dc2626;
  --danger-bg: #fef2f2;
  --subtle-text: #64748b;
  --code-bg: #f1f5f9;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
  --radius: 8px;
}

[hidden] {
  display: none !important;
}

html[data-theme="dark"] {
  --bg-color: #0c111b;
  --text-color: #e8edf6;
  --card-bg: #151c2c;
  --border-color: #243048;
  --input-bg: #0f172a;
  --input-border: #2e3d5b;
  --primary: #3b82f6;
  --primary-hover: #60a5fa;
  --primary-bg: #1e293b;
  --success: #22c55e;
  --success-bg: #064e3b;
  --warning: #f59e0b;
  --warning-bg: #451a03;
  --danger: #ef4444;
  --danger-bg: #7f1d1d;
  --subtle-text: #94a3b8;
  --code-bg: #1e293b;
  --shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

html[data-theme="dark"] body {
  background-color: #0c111b !important;
  color: #e8edf6 !important;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.5;
  padding: 16px;
  font-size: 14px;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* Header & Controls */
.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.mode-switcher {
  display: inline-flex;
  background: var(--code-bg);
  padding: 4px;
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
}

.mode-btn {
  background: none;
  border: none;
  padding: 6px 16px;
  font-size: 14px;
  font-weight: 600;
  color: var(--subtle-text);
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.mode-btn[aria-pressed="true"] {
  background: var(--card-bg);
  color: var(--primary);
  box-shadow: var(--shadow);
}

/* Privacy Badge */
.privacy-hint {
  font-size: 12px;
  color: var(--subtle-text);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* Main Cards */
.card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow);
}

/* Inputs & Actions */
.input-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.drop-zone {
  border: 2px dashed var(--input-border);
  border-radius: var(--radius);
  padding: 16px;
  text-align: center;
  background: var(--input-bg);
  transition: border-color 0.2s ease;
}

.drop-zone.drag-over {
  border-color: var(--primary);
  background: var(--primary-bg);
}

textarea.text-area {
  width: 100%;
  min-height: 160px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 13px;
  padding: 10px;
  background: var(--input-bg);
  color: var(--text-color);
  border: 1px solid var(--input-border);
  border-radius: var(--radius);
  resize: vertical;
}

textarea.text-area:focus {
  outline: none;
  border-color: var(--primary);
}

.action-bar {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
  margin-top: 10px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 14px;
  font-size: 13px;
  font-weight: 500;
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
  background: var(--card-bg);
  color: var(--text-color);
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn:hover {
  background: var(--code-bg);
}

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

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

.btn-danger {
  background: var(--danger-bg);
  color: var(--danger);
  border-color: var(--danger);
}

.btn-danger:hover {
  opacity: 0.9;
}

/* Warnings */
.warning-banner {
  background: var(--warning-bg);
  border: 1px solid var(--warning);
  color: var(--warning);
  padding: 12px 16px;
  border-radius: var(--radius);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.warning-banner.danger {
  background: var(--danger-bg);
  border-color: var(--danger);
  color: var(--danger);
}

/* Summary Grid */
.summary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 12px;
  margin-bottom: 16px;
}

.summary-item {
  background: var(--code-bg);
  padding: 10px 14px;
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
}

.summary-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--subtle-text);

  display: flex;
  justify-content: space-between;
}

.summary-value {
  font-size: 14px;
  font-weight: 600;
  margin-top: 4px;
  word-break: break-all;
}

/* Badges */
.badge {
  display: inline-block;
  padding: 2px 8px;
  font-size: 12px;
  font-weight: 600;
  border-radius: 12px;
}

.badge-success {
  background: var(--success-bg);
  color: var(--success);
}

.badge-warning {
  background: var(--warning-bg);
  color: var(--warning);
}

.badge-danger {
  background: var(--danger-bg);
  color: var(--danger);
}

/* Tabs */
.tabs-nav {
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--border-color);
  overflow-x: auto;
  padding-bottom: 4px;
}

.tab-btn {
  background: none;
  border: none;
  padding: 8px 14px;
  font-size: 13px;
  font-weight: 500;
  color: var(--subtle-text);
  border-bottom: 2px solid transparent;
  cursor: pointer;
  white-space: nowrap;
}

.tab-btn[aria-selected="true"] {
  color: var(--primary);
  border-bottom-color: var(--primary);
  font-weight: 600;
}

.tab-panel {
  padding-top: 16px;
}

.tab-panel[hidden] {
  display: none;
}

/* Details Table */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.data-table th,
.data-table td {
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
  vertical-align: top;
}

.data-table th {
  background: var(--code-bg);
  color: var(--subtle-text);
  font-weight: 600;
}

.copy-val {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 12px;
  word-break: break-all;
}

/* Hostname Coverage Box */
.coverage-box {
  display: flex;
  gap: 10px;
  align-items: center;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.input-text {
  flex: 1;
  min-width: 200px;
  padding: 8px 12px;
  font-size: 13px;
  background: var(--input-bg);
  color: var(--text-color);
  border: 1px solid var(--input-border);
  border-radius: var(--radius);
}

.coverage-result {
  padding: 10px 14px;
  border-radius: var(--radius);
  font-weight: 500;
  font-size: 13px;
}

/* Chain Visual */
.chain-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.chain-node {
  background: var(--code-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 10px 14px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* Diff Styling for Compare */
.diff-tag-changed {
  background: var(--warning-bg);
  color: var(--warning);
}
.diff-tag-added {
  background: var(--success-bg);
  color: var(--success);
}
.diff-tag-removed {
  background: var(--danger-bg);
  color: var(--danger);
}
.diff-tag-same {
  background: var(--code-bg);
  color: var(--subtle-text);
}

.compare-input-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 16px;
}

.inline-warning {
  margin: 8px 0 0;
  color: var(--danger);
  font-size: 12px;
  font-weight: 600;
}

.checkbox-control {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
}

.pem-option {
  padding: 12px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  background: var(--code-bg);
}

/* Toast */
.toast {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background: #0f172a;
  color: #ffffff;
  padding: 10px 18px;
  border-radius: var(--radius);
  font-size: 13px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
  z-index: 9999;
  opacity: 0;
  transition: opacity 0.2s ease;
  pointer-events: none;
}

.toast.show {
  opacity: 1;
}

/* Modal */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 10000;
}
.modal-overlay[hidden] {
  display: none;
}
.modal-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  width: 90%;
  max-width: 650px;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
}
.modal-header {
  padding: 14px 18px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.modal-body {
  padding: 18px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.modal-footer {
  padding: 12px 18px;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

/* Shared guide focus outline */
.dth-guide-highlight {
  outline: 2px solid #2463eb !important;
  box-shadow: 0 0 0 4px rgba(36, 99, 235, 0.2) !important;
}

button:focus-visible,
textarea:focus-visible,
input:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

@media (max-width: 640px) {
  .app-container {
    padding: 12px;
  }
  .summary-grid {
    grid-template-columns: 1fr;
  }
  .compare-input-grid {
    grid-template-columns: 1fr;
  }
  .modal-card {
    width: calc(100% - 20px);
    max-height: calc(100vh - 20px);
  }
}