/* App shell — logged-in translator + settings UI for Pela */

/* App-specific tokens that extend the marketing site's palette */
:root {
  --app-radius: 0;
  --app-pad: clamp(0.75rem, 2vw, 1.25rem);
  --app-gap: clamp(1rem, 2.5vw, 1.5rem);
  --app-shadow: 8px 8px 0 var(--ink);
  --app-shadow-blue: 8px 8px 0 var(--route-blue);
  --app-shadow-hover: 12px 12px 0 var(--ink);
  --app-transition: 220ms cubic-bezier(0.32, 0.72, 0, 1);
}

/* Base */

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.app-shell {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

.app-main {
  flex: 1 1 auto;
  padding: var(--app-pad);
  display: flex;
  flex-direction: column;
}

/* App header */

.app-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.65rem clamp(0.75rem, 2.5vw, 1.5rem);
  background: color-mix(in srgb, var(--paper) 92%, transparent);
  border-bottom: 3px solid var(--ink);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.app-header .brand {
  font-size: 1rem;
  transition: transform var(--app-transition);
}

.app-header .brand:hover {
  transform: translateY(-1px);
}

.app-nav {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.app-nav > a,
.app-nav > button {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--ink-secondary);
  text-decoration: none;
  font-size: 0.73rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.45rem 0.7rem;
  border-radius: 999px;
  border: 0;
  background: transparent;
  cursor: pointer;
  transition: color var(--app-transition), background var(--app-transition), transform var(--app-transition);
}

.app-nav > a:hover,
.app-nav > button:hover {
  color: var(--ink);
  background: var(--surface-sunken);
  transform: translateY(-1px);
}

.app-nav > a[aria-current="page"] {
  color: var(--paper);
  background: var(--ink);
}

/* User menu inside app header */

.app-header .user-menu-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.45rem 0.75rem;
  background: var(--surface);
  border: 2px solid var(--ink);
  border-radius: 999px;
  color: var(--ink);
  font-family: inherit;
  font-size: 0.73rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: background var(--app-transition), transform var(--app-transition), box-shadow var(--app-transition);
}

.app-header .user-menu-toggle:hover {
  background: var(--route-blue);
  transform: translateY(-1px);
  box-shadow: 3px 3px 0 var(--ink);
}

.app-header .user-menu-toggle svg {
  width: 0.75rem;
  height: 0.75rem;
  transition: transform var(--app-transition);
}

.app-header .user-menu[aria-expanded="true"] .user-menu-toggle svg,
.app-header .user-menu.is-open .user-menu-toggle svg {
  transform: rotate(180deg);
}

/* Translator */

.translator-page {
  display: flex;
  flex-direction: column;
  gap: var(--app-gap);
  flex: 1 1 auto;
  min-height: 0;
}

.translator-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.translator-toolbar h1 {
  margin: 0;
  font-family: "Space Grotesk", Helvetica, Arial, sans-serif;
  font-size: clamp(1.25rem, 2.6vw, 1.9rem);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.translator-grid {
  position: relative;
  flex: 1 1 auto;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--app-gap);
  min-height: 0;
}

.translator-panel {
  display: flex;
  flex-direction: column;
  background: var(--surface);
  border: 3px solid var(--ink);
  box-shadow: var(--app-shadow);
  transition: box-shadow var(--app-transition), transform var(--app-transition);
  min-height: 0;
}

.translator-panel:focus-within {
  box-shadow: var(--app-shadow-blue);
  transform: translate(-1px, -1px);
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.55rem 0.75rem;
  border-bottom: 3px solid var(--ink);
  background: var(--surface-sunken);
}

.lang-select {
  appearance: none;
  -webkit-appearance: none;
  background: transparent;
  border: 0;
  color: var(--ink);
  font-family: inherit;
  font-size: 0.82rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 0.35rem 1.4rem 0.35rem 0.4rem;
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='none' stroke='%2311131a' stroke-width='2'%3E%3Cpath d='M2 4l4 4 4-4'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.2rem center;
  transition: color var(--app-transition);
}

.lang-select:focus {
  outline: none;
  color: var(--route-blue);
}

.panel-actions {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.1rem;
  height: 2.1rem;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: transparent;
  color: var(--ink-secondary);
  cursor: pointer;
  transition: color var(--app-transition), background var(--app-transition), transform var(--app-transition);
}

.icon-btn:hover {
  color: var(--ink);
  background: var(--surface);
  transform: translateY(-1px);
}

.icon-btn:focus-visible {
  outline: 2px solid var(--route-blue);
  outline-offset: 2px;
}

.icon-btn svg {
  width: 1.05rem;
  height: 1.05rem;
}

.panel-body {
  flex: 1 1 auto;
  position: relative;
  min-height: 0;
}

.translator-textarea,
.output-text {
  width: 100%;
  height: 100%;
  min-height: 9rem;
  padding: 1rem;
  border: 0;
  background: transparent;
  color: var(--ink);
  font-family: inherit;
  font-size: clamp(1rem, 1.3vw, 1.15rem);
  line-height: 1.65;
  resize: none;
}

.translator-textarea::placeholder {
  color: var(--ink-tertiary);
}

.translator-textarea:focus {
  outline: none;
}

.output-text {
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-word;
}

.output-text.is-loading {
  color: var(--ink-tertiary);
}

.output-text.is-error {
  color: var(--route-red);
}

.output-placeholder {
  position: absolute;
  inset: 1rem;
  color: var(--ink-tertiary);
  pointer-events: none;
}

.panel-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.55rem 0.85rem;
  border-top: 1px solid var(--hairline-strong);
  font-size: 0.76rem;
  font-weight: 700;
  color: var(--ink-tertiary);
}

.char-count {
  font-variant-numeric: tabular-nums;
}

.translate-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.65rem 1.2rem;
  background: var(--ink);
  color: var(--paper);
  border: 3px solid var(--ink);
  font-family: inherit;
  font-size: 0.8rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  cursor: pointer;
  box-shadow: 4px 4px 0 var(--route-blue);
  transition: background var(--app-transition), color var(--app-transition), transform var(--app-transition), box-shadow var(--app-transition);
}

.translate-btn:hover:not(:disabled) {
  background: var(--route-blue);
  color: var(--black);
  transform: translateY(-2px);
  box-shadow: 6px 6px 0 var(--ink);
}

.translate-btn:active:not(:disabled) {
  transform: translateY(0);
  box-shadow: 2px 2px 0 var(--ink);
}

.translate-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.translate-btn svg {
  width: 1rem;
  height: 1rem;
  transition: transform var(--app-transition);
}

.translate-btn:hover:not(:disabled) svg {
  transform: translateX(2px);
}

.swap-btn {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  z-index: 10;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  border: 3px solid var(--ink);
  background: var(--surface);
  color: var(--ink);
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 4px 4px 0 var(--route-gold);
  transition: transform var(--app-transition), background var(--app-transition), box-shadow var(--app-transition);
}

.swap-btn:hover {
  background: var(--route-gold);
  color: var(--black);
  transform: translate(-50%, -50%) rotate(180deg);
  box-shadow: 4px 4px 0 var(--ink);
}

.swap-btn svg {
  width: 1.2rem;
  height: 1.2rem;
}

/* Loading indicator */

.loading-dots {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.loading-dots span {
  width: 0.4rem;
  height: 0.4rem;
  border-radius: 50%;
  background: currentColor;
  animation: appPulse 1.2s ease-in-out infinite;
}

.loading-dots span:nth-child(2) {
  animation-delay: 0.2s;
}

.loading-dots span:nth-child(3) {
  animation-delay: 0.4s;
}

@keyframes appPulse {
  0%, 100% { opacity: 0.35; transform: scale(0.8); }
  50% { opacity: 1; transform: scale(1); }
}

@media (prefers-reduced-motion: reduce) {
  .translator-panel,
  .translate-btn,
  .swap-btn,
  .icon-btn,
  .app-header .brand,
  .app-nav > a,
  .app-nav > button,
  .app-header .user-menu-toggle {
    transition: none;
    transform: none !important;
  }

  .swap-btn:hover {
    transform: translate(-50%, -50%);
  }

  .loading-dots span {
    animation: none;
    opacity: 1;
  }
}

/* Settings */

.settings-page {
  display: grid;
  grid-template-columns: 14rem minmax(0, 1fr);
  gap: clamp(1.5rem, 4vw, 3rem);
  max-width: 1100px;
  margin: 0 auto;
  width: 100%;
}

.settings-sidebar {
  position: sticky;
  top: 5rem;
  align-self: start;
}

.settings-sidebar h1 {
  margin: 0 0 1rem;
  font-family: "Space Grotesk", Helvetica, Arial, sans-serif;
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.settings-nav {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.settings-nav a {
  display: block;
  padding: 0.5rem 0.75rem;
  color: var(--ink-secondary);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 800;
  border-radius: 999px;
  transition: color var(--app-transition), background var(--app-transition);
}

.settings-nav a:hover {
  color: var(--ink);
  background: var(--surface-sunken);
}

.settings-content {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.settings-card {
  background: var(--surface);
  border: 3px solid var(--ink);
  box-shadow: var(--app-shadow);
  padding: clamp(1.25rem, 3vw, 1.5rem);
}

.settings-card h2 {
  margin: 0 0 0.25rem;
  font-family: "Space Grotesk", Helvetica, Arial, sans-serif;
  font-size: 1.15rem;
  font-weight: 700;
}

.settings-card > p {
  margin: 0 0 1rem;
  color: var(--ink-secondary);
  font-size: 0.92rem;
  line-height: 1.55;
}

.cancellation-page {
  display: grid;
  place-items: center;
  flex: 1;
  padding: clamp(2rem, 8vw, 6rem) var(--app-pad);
}

.cancellation-card {
  width: min(100%, 38rem);
  background: var(--surface);
  border: 3px solid var(--ink);
  box-shadow: var(--app-shadow);
  padding: clamp(1.5rem, 5vw, 2.5rem);
}

.cancellation-card h1 {
  margin: 0 0 0.75rem;
  font-family: "Space Grotesk", Helvetica, Arial, sans-serif;
  font-size: clamp(1.75rem, 5vw, 2.75rem);
  line-height: 1;
}

.cancellation-card p {
  margin: 0 0 1rem;
  color: var(--ink-secondary);
  line-height: 1.55;
}

.cancellation-card .btn {
  width: 100%;
  margin: 0.5rem 0 1.25rem;
}

.cancellation-card hr {
  border: 0;
  border-top: 1px solid var(--hairline-strong);
  margin: 1.5rem 0;
}

.settings-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--hairline);
}

.settings-row:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.settings-row:first-of-type {
  padding-top: 0;
}

.settings-label {
  font-size: 0.85rem;
  font-weight: 800;
  color: var(--ink);
}

.settings-value {
  font-size: 0.9rem;
  color: var(--ink-secondary);
  text-align: right;
  word-break: break-word;
}

.plan-badge {
  display: inline-block;
  padding: 0.3rem 0.55rem;
  background: var(--route-blue);
  color: var(--black);
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.credit-pill {
  font-variant-numeric: tabular-nums;
  font-weight: 800;
  color: var(--ink);
}

.credit-bar {
  width: 100%;
  height: 0.5rem;
  background: var(--surface-sunken);
  border: 2px solid var(--ink);
  margin-top: 0.4rem;
  overflow: hidden;
}

.credit-bar > span {
  display: block;
  height: 100%;
  background: var(--route-gold);
  transition: width var(--app-transition);
}

/* Buttons */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.6rem 1rem;
  border: 3px solid var(--ink);
  background: var(--route-blue);
  color: var(--black);
  font-family: inherit;
  font-size: 0.8rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  text-decoration: none;
  cursor: pointer;
  box-shadow: 3px 3px 0 var(--ink);
  transition: background var(--app-transition), transform var(--app-transition), box-shadow var(--app-transition);
}

.btn:hover {
  background: var(--paper);
  transform: translateY(-2px);
  box-shadow: 5px 5px 0 var(--ink);
}

.btn:active {
  transform: translateY(0);
  box-shadow: 2px 2px 0 var(--ink);
}

.btn-secondary {
  background: var(--surface);
  color: var(--ink);
}

.btn-danger {
  background: var(--route-red);
  color: #fff;
}

/* API keys */

.keys-form {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.keys-form input {
  flex: 1 1 220px;
  padding: 0.6rem 0.85rem;
  border: 2px solid var(--ink);
  background: var(--surface-sunken);
  color: var(--ink);
  font: inherit;
  font-size: 0.9rem;
}

.keys-form input:focus {
  outline: 3px solid var(--route-blue);
  outline-offset: -3px;
}

.keys-table-wrap {
  overflow-x: auto;
}

.keys-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}

.keys-table th,
.keys-table td {
  padding: 0.6rem 0.5rem;
  text-align: left;
  border-bottom: 1px solid var(--hairline);
}

.keys-table th {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--ink-tertiary);
  font-weight: 800;
}

.keys-table td {
  color: var(--ink-secondary);
}

.key-name {
  font-weight: 700;
  color: var(--ink);
}

.key-prefix {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.85em;
  word-break: break-all;
}

.key-actions {
  display: flex;
  gap: 0.5rem;
}

.keys-empty {
  color: var(--ink-tertiary);
  font-size: 0.9rem;
  margin: 0.75rem 0 0;
}

.new-key-box {
  background: var(--surface-sunken);
  border: 2px solid var(--ink);
  padding: 0.85rem 1rem;
  margin-bottom: 1rem;
}

.new-key-box p {
  margin: 0 0 0.6rem;
  font-size: 0.85rem;
  color: var(--ink-secondary);
}

.new-key-box code {
  display: block;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.85rem;
  word-break: break-all;
  padding: 0.5rem 0.6rem;
  background: var(--surface);
  border: 1px solid var(--hairline);
}

/* Toast */

.app-toast {
  position: fixed;
  bottom: 1.25rem;
  left: 50%;
  transform: translateX(-50%) translateY(140%);
  z-index: 200;
  padding: 0.85rem 1.25rem;
  background: var(--ink);
  color: var(--paper);
  border: 3px solid var(--ink);
  box-shadow: 6px 6px 0 var(--route-blue);
  font-size: 0.85rem;
  font-weight: 800;
  transition: transform var(--app-transition);
}

.app-toast.is-visible {
  transform: translateX(-50%) translateY(0);
}

/* Responsive */

@media (max-width: 900px) {
  .translator-grid {
    grid-template-columns: 1fr;
  }

  .translator-panel {
    min-height: 14rem;
  }

  .swap-btn {
    position: static;
    transform: none;
    order: 2;
    margin: 0 auto;
    width: 2.5rem;
    height: 2.5rem;
    box-shadow: 3px 3px 0 var(--route-gold);
  }

  .swap-btn:hover {
    transform: rotate(180deg);
  }

  .translator-grid > *:first-child {
    order: 1;
  }

  .translator-grid > *:last-child {
    order: 3;
  }

  .settings-page {
    grid-template-columns: 1fr;
  }

  .settings-sidebar {
    position: static;
  }

  .settings-nav {
    flex-direction: row;
    flex-wrap: wrap;
  }
}

@media (max-width: 560px) {
  .app-header {
    padding-inline: 0.75rem;
  }

  .app-nav > a,
  .app-nav > button {
    padding: 0.4rem 0.5rem;
    font-size: 0.68rem;
  }

  .app-header .user-menu-toggle {
    padding: 0.4rem 0.6rem;
    font-size: 0.68rem;
  }

  .translator-toolbar {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
  }

  .translate-btn {
    width: 100%;
    justify-content: center;
  }

  .panel-header {
    flex-wrap: wrap;
  }

  .panel-footer {
    flex-wrap: wrap;
    gap: 0.5rem;
  }

  .settings-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.35rem;
  }

  .settings-value {
    text-align: left;
  }
}