/* ===============================
   ABOUT & FEEDBACK DIALOG STYLES
   =============================== */

/* Overlay */
.about-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  z-index: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.about-overlay.visible {
  opacity: 1;
}

/* Modal */
.about-modal {
  background: #0D1017;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 16px;
  width: 520px;
  max-width: 92vw;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(255, 255, 255, 0.05);
  transform: scale(0.95);
  transition: transform 0.2s ease;
}

.about-overlay.visible .about-modal {
  transform: scale(1);
}

/* Header with tabs */
.about-modal-header {
  display: flex;
  align-items: center;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding: 0 8px;
}

.about-modal-tabs {
  display: flex;
  flex: 1;
  gap: 0;
}

.about-tab {
  background: none;
  border: none;
  color: rgba(255, 255, 255, 0.5);
  padding: 14px 16px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: all 0.2s ease;
  font-family: inherit;
}

.about-tab:hover {
  color: rgba(255, 255, 255, 0.8);
}

.about-tab.active {
  color: #2ECFB0;
  border-bottom-color: #2ECFB0;
}

.about-close-btn {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.05);
  color: rgba(255, 255, 255, 0.6);
  font-size: 14px;
  cursor: pointer;
  transition: all 0.15s ease;
  flex-shrink: 0;
}

.about-close-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  color: white;
}

/* Body */
.about-modal-body {
  padding: 24px;
  overflow-y: auto;
  flex: 1;
}

/* Tab content */
.about-tab-content {
  display: none;
}

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

/* === ABOUT TAB === */
.about-logo-row {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
}

.about-logo {
  width: 56px;
  height: 56px;
}

.about-app-name {
  font-size: 22px;
  font-weight: 700;
  color: #E2E8F0;
}

.about-version {
  font-size: 13px;
  color: #2ECFB0;
  font-weight: 600;
}

.about-tagline {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  font-style: italic;
  margin: 0 0 8px;
}

.about-desc {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.5;
  margin: 0 0 20px;
}

.about-info-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 20px;
}

.about-info-item {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 8px;
  padding: 10px 12px;
}

.about-info-label {
  display: block;
  font-size: 11px;
  color: rgba(255, 255, 255, 0.4);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 3px;
}

.about-info-value {
  display: block;
  font-size: 13px;
  color: #E2E8F0;
}

.about-copyright {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.4);
  margin: 0;
  text-align: center;
}

/* === FEATURES TAB === */
.about-feature-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.about-feature-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 10px 12px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 8px;
}

.about-feature-icon {
  font-size: 20px;
  flex-shrink: 0;
  margin-top: 1px;
}

.about-feature-item strong {
  display: block;
  font-size: 13px;
  color: #E2E8F0;
  margin-bottom: 2px;
}

.about-feature-item span {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.5);
  line-height: 1.4;
}

/* === SHORTCUTS TAB === */
.about-shortcut-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.about-shortcut-group-title {
  font-size: 11px;
  color: #2ECFB0;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  font-weight: 700;
  margin-top: 12px;
  margin-bottom: 4px;
}

.about-shortcut-group-title:first-child {
  margin-top: 0;
}

.about-shortcut {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  background: rgba(255, 255, 255, 0.03);
  border-radius: 6px;
}

.about-shortcut kbd {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 4px;
  padding: 3px 8px;
  font-size: 12px;
  font-family: 'SF Mono', 'Consolas', monospace;
  color: #E2E8F0;
  white-space: nowrap;
}

.about-shortcut > span {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
  text-align: right;
}

/* === FEEDBACK TAB === */
.about-feedback-intro {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
  margin: 0 0 16px;
  line-height: 1.5;
}

.about-form-group {
  margin-bottom: 14px;
}

.about-form-label {
  display: block;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.6);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 6px;
}

.about-form-input,
.about-form-select,
.about-form-textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.04);
  color: #E2E8F0;
  font-size: 14px;
  font-family: inherit;
  box-sizing: border-box;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.about-form-input:focus,
.about-form-select:focus,
.about-form-textarea:focus {
  outline: none;
  border-color: #2ECFB0;
  box-shadow: 0 0 0 3px rgba(46, 207, 176, 0.1);
}

.about-form-textarea {
  resize: vertical;
  min-height: 100px;
}

.about-form-select {
  -webkit-appearance: none;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%23999' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 32px;
}

.about-form-select option {
  background: #0D1017;
  color: #E2E8F0;
}

.about-submit-btn {
  width: 100%;
  padding: 12px 16px;
  background: linear-gradient(135deg, #2ECFB0 0%, #25A98F 100%);
  color: #0E1117;
  border: none;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 4px 12px rgba(46, 207, 176, 0.3);
  font-family: inherit;
}

.about-submit-btn:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(46, 207, 176, 0.4);
}

.about-submit-btn:active:not(:disabled) {
  transform: translateY(0);
}

.about-submit-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.about-feedback-status {
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 13px;
  margin-bottom: 12px;
}

.about-feedback-status.success {
  background: rgba(74, 222, 128, 0.1);
  border: 1px solid rgba(74, 222, 128, 0.3);
  color: #4ADE80;
}

.about-feedback-status.error {
  background: rgba(248, 113, 113, 0.1);
  border: 1px solid rgba(248, 113, 113, 0.3);
  color: #F87171;
}

/* === MOBILE === */
@media (max-width: 560px) {
  .about-modal {
    width: 100%;
    max-width: 100vw;
    max-height: 100vh;
    border-radius: 0;
  }

  .about-tab {
    padding: 12px 10px;
    font-size: 12px;
  }

  .about-info-grid {
    grid-template-columns: 1fr;
  }
}