/* ─── AI Tools Generator — Design System ─────────────────────────────────── */
/* Aesthetic: clinical white, surgical precision, zero decoration noise        */

@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@300;400;500;600&family=DM+Mono:wght@400;500&display=swap');

:root {
  --ait-white:       #ffffff;
  --ait-bg:          #f8f8f7;
  --ait-surface:     #ffffff;
  --ait-border:      #e8e8e6;
  --ait-border-focus:#1a1a1a;
  --ait-text:        #1a1a1a;
  --ait-text-2:      #6b6b68;
  --ait-text-3:      #a0a09c;
  --ait-accent:      #1a1a1a;
  --ait-accent-hover:#2d2d2d;
  --ait-tg:          #229ed9;
  --ait-stars:       #f59e0b;
  --ait-success:     #16a34a;
  --ait-error:       #dc2626;
  --ait-radius:      10px;
  --ait-radius-sm:   6px;
  --ait-shadow:      0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
  --ait-shadow-md:   0 4px 16px rgba(0,0,0,.08), 0 1px 4px rgba(0,0,0,.04);
  --ait-font:        'DM Sans', system-ui, sans-serif;
  --ait-mono:        'DM Mono', 'Fira Code', monospace;
  --ait-transition:  160ms cubic-bezier(.4,0,.2,1);
}

/* ─── Wrap ─────────────────────────────────────────────────────────────────── */

.ait-wrap {
  font-family: var(--ait-font);
  color: var(--ait-text);
  max-width: 760px;
  margin: 0 auto;
  padding: 0 0 64px;
}

/* ─── Auth Bar ─────────────────────────────────────────────────────────────── */

.ait-auth-bar {
  background: var(--ait-surface);
  border: 1px solid var(--ait-border);
  border-radius: var(--ait-radius);
  padding: 18px 24px;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
}

.ait-auth-bar__inner {
  width: 100%;
}

.ait-auth-state {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.ait-auth-bar__text {
  font-size: 14px;
  color: var(--ait-text-2);
  margin: 0;
  flex: 1;
}

.ait-auth-bar__email {
  font-size: 13px;
  font-weight: 500;
  color: var(--ait-text);
}

.ait-auth-bar__badge {
  font-size: 12px;
  font-weight: 500;
  padding: 3px 10px;
  border-radius: 20px;
  background: var(--ait-bg);
  border: 1px solid var(--ait-border);
  color: var(--ait-text-2);
}

/* ─── Card ─────────────────────────────────────────────────────────────────── */

.ait-card {
  background: var(--ait-surface);
  border: 1px solid var(--ait-border);
  border-radius: var(--ait-radius);
  padding: 40px;
  box-shadow: var(--ait-shadow);
  margin-bottom: 20px;
}

.ait-card__header {
  margin-bottom: 36px;
}

.ait-card__title {
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -.3px;
  color: var(--ait-text);
  margin: 0 0 8px;
  line-height: 1.3;
}

.ait-card__sub {
  font-size: 14px;
  color: var(--ait-text-2);
  margin: 0;
  line-height: 1.6;
}

/* ─── Form ─────────────────────────────────────────────────────────────────── */

.ait-form {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.ait-field {
  display: flex;
  flex-direction: column;
  gap: 7px;
  flex: 1;
}

.ait-field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.ait-label {
  font-size: 13px;
  font-weight: 500;
  color: var(--ait-text);
  display: flex;
  align-items: center;
  gap: 8px;
}

.ait-hint {
  font-size: 11px;
  font-weight: 400;
  color: var(--ait-text-3);
  white-space: nowrap;
}

.ait-input,
.ait-textarea,
.ait-select {
  font-family: var(--ait-font);
  font-size: 14px;
  color: var(--ait-text);
  background: var(--ait-white);
  border: 1px solid var(--ait-border);
  border-radius: var(--ait-radius-sm);
  padding: 11px 14px;
  outline: none;
  transition: border-color var(--ait-transition);
  width: 100%;
  box-sizing: border-box;
  -webkit-appearance: none;
}

.ait-input:focus,
.ait-textarea:focus,
.ait-select:focus {
  border-color: var(--ait-border-focus);
}

.ait-input::placeholder,
.ait-textarea::placeholder {
  color: var(--ait-text-3);
}

.ait-textarea {
  resize: vertical;
  min-height: 90px;
  line-height: 1.6;
}

.ait-textarea--large {
  min-height: 200px;
}

.ait-select-wrap {
  position: relative;
}

.ait-select-wrap::after {
  content: '';
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  width: 0;
  height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 5px solid var(--ait-text-2);
  pointer-events: none;
}

.ait-select {
  padding-right: 36px;
  cursor: pointer;
}

.ait-input--sm {
  font-size: 13px;
  padding: 9px 12px;
}

/* ─── Keywords ─────────────────────────────────────────────────────────────── */

.ait-keywords-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.ait-keyword-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.ait-keyword-row .ait-input {
  flex: 1;
}

.ait-kw-remove {
  background: none;
  border: none;
  color: var(--ait-text-3);
  cursor: pointer;
  font-size: 14px;
  padding: 6px;
  border-radius: 4px;
  transition: color var(--ait-transition);
  flex-shrink: 0;
  line-height: 1;
}

.ait-kw-remove:hover {
  color: var(--ait-error);
}

.ait-btn-add-kw {
  align-self: flex-start;
  background: none;
  border: none;
  font-family: var(--ait-font);
  font-size: 13px;
  font-weight: 500;
  color: var(--ait-text-2);
  cursor: pointer;
  padding: 0;
  transition: color var(--ait-transition);
  margin-top: 4px;
}

.ait-btn-add-kw:hover {
  color: var(--ait-text);
}

/* ─── Style Grid (radio chips) ────────────────────────────────────────────── */

.ait-style-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.ait-style-grid--3 .ait-style-option {
  flex: 1;
  min-width: 140px;
}

.ait-style-option {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  border: 1px solid var(--ait-border);
  border-radius: var(--ait-radius-sm);
  cursor: pointer;
  transition: border-color var(--ait-transition), background var(--ait-transition);
  font-size: 13px;
  font-weight: 500;
  color: var(--ait-text-2);
  user-select: none;
}

.ait-style-option:hover {
  border-color: var(--ait-border-focus);
  color: var(--ait-text);
}

.ait-style-option input[type="radio"] {
  display: none;
}

.ait-style-option:has(input:checked) {
  border-color: var(--ait-text);
  color: var(--ait-text);
  background: var(--ait-bg);
}

.ait-style-option--desc {
  flex-direction: column;
  align-items: flex-start;
  padding: 12px 16px;
}

.ait-style-label {
  font-size: 13px;
  font-weight: 600;
}

.ait-style-desc {
  font-size: 11px;
  font-weight: 400;
  color: var(--ait-text-3);
}

.ait-style-option--desc:has(input:checked) .ait-style-desc {
  color: var(--ait-text-2);
}

/* ─── Toggle ──────────────────────────────────────────────────────────────── */

.ait-toggle-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
}

.ait-toggle {
  position: relative;
  display: inline-block;
  width: 40px;
  height: 22px;
  cursor: pointer;
}

.ait-toggle input {
  opacity: 0;
  width: 0;
  height: 0;
  position: absolute;
}

.ait-toggle__slider {
  position: absolute;
  inset: 0;
  background: var(--ait-border);
  border-radius: 20px;
  transition: background var(--ait-transition);
}

.ait-toggle__slider::before {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  left: 3px;
  bottom: 3px;
  background: white;
  border-radius: 50%;
  transition: transform var(--ait-transition);
  box-shadow: 0 1px 3px rgba(0,0,0,.15);
}

.ait-toggle input:checked + .ait-toggle__slider {
  background: var(--ait-accent);
}

.ait-toggle input:checked + .ait-toggle__slider::before {
  transform: translateX(18px);
}

.ait-toggle-label {
  font-size: 13px;
  color: var(--ait-text-2);
}

/* ─── Char count ──────────────────────────────────────────────────────────── */

.ait-char-count {
  font-size: 11px;
  color: var(--ait-text-3);
  text-align: right;
  font-family: var(--ait-mono);
}

/* ─── Generate Button ─────────────────────────────────────────────────────── */

.ait-btn-generate {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  padding: 14px 28px;
  background: var(--ait-accent);
  color: #fff;
  border: none;
  border-radius: var(--ait-radius-sm);
  font-family: var(--ait-font);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: -.1px;
  cursor: pointer;
  transition: background var(--ait-transition), transform 80ms;
  margin-top: 8px;
}

.ait-btn-generate:hover {
  background: var(--ait-accent-hover);
}

.ait-btn-generate:active {
  transform: scale(.99);
}

.ait-btn-generate:disabled {
  opacity: .5;
  cursor: not-allowed;
}

/* Spinner */
.ait-btn-spinner {
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255,255,255,.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: ait-spin .7s linear infinite;
  flex-shrink: 0;
}

@keyframes ait-spin {
  to { transform: rotate(360deg); }
}

/* ─── Result Block ────────────────────────────────────────────────────────── */

.ait-result {
  background: var(--ait-surface);
  border: 1px solid var(--ait-border);
  border-radius: var(--ait-radius);
  padding: 32px 40px;
  box-shadow: var(--ait-shadow);
  margin-bottom: 20px;
  animation: ait-fadein .3s ease;
}

@keyframes ait-fadein {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.ait-result__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.ait-result__title {
  font-size: 14px;
  font-weight: 600;
  color: var(--ait-text-2);
  margin: 0;
  text-transform: uppercase;
  letter-spacing: .06em;
  font-size: 11px;
}

.ait-result__tabs {
  display: flex;
  gap: 4px;
}

.ait-tab {
  padding: 5px 14px;
  border: 1px solid var(--ait-border);
  border-radius: var(--ait-radius-sm);
  background: none;
  font-family: var(--ait-font);
  font-size: 12px;
  font-weight: 500;
  color: var(--ait-text-2);
  cursor: pointer;
  transition: all var(--ait-transition);
}

.ait-tab--active {
  background: var(--ait-text);
  border-color: var(--ait-text);
  color: #fff;
}

.ait-result__content {
  font-size: 15px;
  line-height: 1.75;
  color: var(--ait-text);
  white-space: pre-wrap;
  word-break: break-word;
}

.ait-result__content h2 {
  font-size: 18px;
  font-weight: 600;
  margin: 28px 0 12px;
  letter-spacing: -.2px;
}

.ait-result__content p {
  margin: 0 0 16px;
}

.ait-result__code {
  font-family: var(--ait-mono);
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--ait-text-2);
  background: var(--ait-bg);
  border: 1px solid var(--ait-border);
  border-radius: var(--ait-radius-sm);
  padding: 16px;
  width: 100%;
  box-sizing: border-box;
  resize: vertical;
}

.ait-btn-copy {
  margin-top: 16px;
  padding: 9px 20px;
  background: none;
  border: 1px solid var(--ait-border);
  border-radius: var(--ait-radius-sm);
  font-family: var(--ait-font);
  font-size: 13px;
  font-weight: 500;
  color: var(--ait-text-2);
  cursor: pointer;
  transition: all var(--ait-transition);
}

.ait-btn-copy:hover {
  border-color: var(--ait-text);
  color: var(--ait-text);
}

.ait-btn-copy--copied {
  color: var(--ait-success);
  border-color: var(--ait-success);
}

.ait-result__meta {
  margin-top: 16px;
  font-size: 12px;
  color: var(--ait-text-3);
  font-family: var(--ait-mono);
}

/* ─── Upsell Blocks ───────────────────────────────────────────────────────── */

.ait-upsell {
  border: 1px solid var(--ait-border);
  border-radius: var(--ait-radius);
  padding: 32px 40px;
  background: var(--ait-surface);
  margin-bottom: 20px;
  animation: ait-fadein .3s ease;
}

.ait-upsell--tg {
  border-color: rgba(34,158,217,.25);
  background: linear-gradient(135deg, #fff 0%, #f0f8fd 100%);
}

.ait-upsell--stars {
  border-color: rgba(245,158,11,.25);
  background: linear-gradient(135deg, #fff 0%, #fdfaf3 100%);
}

.ait-upsell__inner {
  display: flex;
  gap: 24px;
  align-items: flex-start;
}

.ait-upsell__icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.ait-upsell--tg .ait-upsell__icon {
  color: var(--ait-tg);
  background: rgba(34,158,217,.1);
}

.ait-upsell--stars .ait-upsell__icon {
  color: var(--ait-stars);
  background: rgba(245,158,11,.1);
}

.ait-upsell__body {
  flex: 1;
}

.ait-upsell__title {
  font-size: 17px;
  font-weight: 600;
  margin: 0 0 8px;
  letter-spacing: -.2px;
}

.ait-upsell__text {
  font-size: 14px;
  color: var(--ait-text-2);
  margin: 0 0 20px;
  line-height: 1.65;
}

.ait-upsell__actions {
  margin-bottom: 20px;
}

.ait-btn-tg {
  display: inline-flex;
  align-items: center;
  padding: 11px 24px;
  background: var(--ait-tg);
  color: #fff;
  border-radius: var(--ait-radius-sm);
  font-family: var(--ait-font);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  transition: opacity var(--ait-transition);
}

.ait-btn-tg:hover {
  opacity: .88;
}

.ait-btn-stars {
  display: inline-flex;
  align-items: center;
  padding: 11px 24px;
  background: var(--ait-stars);
  color: #fff;
  border-radius: var(--ait-radius-sm);
  font-family: var(--ait-font);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  transition: opacity var(--ait-transition);
}

.ait-btn-stars:hover {
  opacity: .88;
}

.ait-upsell__verify {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.ait-btn-verify-tg,
.ait-btn-check-stars {
  padding: 9px 18px;
  border: 1px solid var(--ait-border);
  border-radius: var(--ait-radius-sm);
  background: none;
  font-family: var(--ait-font);
  font-size: 13px;
  font-weight: 500;
  color: var(--ait-text-2);
  cursor: pointer;
  transition: all var(--ait-transition);
}

.ait-btn-verify-tg:hover,
.ait-btn-check-stars:hover {
  border-color: var(--ait-text);
  color: var(--ait-text);
}

.ait-upsell__hint {
  width: 100%;
  font-size: 11px;
  color: var(--ait-text-3);
  margin: 4px 0 0;
}

/* ─── Notice / Error ──────────────────────────────────────────────────────── */

.ait-notice {
  padding: 12px 16px;
  border-radius: var(--ait-radius-sm);
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 16px;
  display: none;
}

.ait-notice--error {
  background: #fef2f2;
  border: 1px solid #fecaca;
  color: var(--ait-error);
  display: block;
}

.ait-notice--success {
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
  color: var(--ait-success);
  display: block;
}

/* ─── Responsive ──────────────────────────────────────────────────────────── */

@media (max-width: 640px) {
  .ait-card,
  .ait-result,
  .ait-upsell {
    padding: 24px 20px;
  }

  .ait-field-row {
    grid-template-columns: 1fr;
  }

  .ait-upsell__inner {
    flex-direction: column;
    gap: 16px;
  }

  .ait-style-grid--3 .ait-style-option {
    min-width: 100%;
  }
}

/* ── Telegram Auth Bar ──────────────────────────────────────────────────── */

.ait-auth-bar {
  background: var(--ait-surface);
  border: 1px solid var(--ait-border);
  border-radius: var(--ait-radius);
  padding: 18px 24px;
  margin-bottom: 20px;
}
.ait-auth-bar__inner { width: 100%; }
.ait-auth-state { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.ait-auth-bar__text { font-size: 14px; color: var(--ait-text-2); margin: 0; flex: 1; }

/* Signed-in state */
.ait-auth-bar__user { display: flex; align-items: center; gap: 10px; }
.ait-auth-bar__avatar {
  width: 32px; height: 32px; border-radius: 50%;
  background: var(--ait-bg); border: 1px solid var(--ait-border);
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 600; color: var(--ait-text-2);
  background-size: cover; background-position: center; flex-shrink: 0;
}
.ait-auth-bar__avatar.has-photo { font-size: 0; }
.ait-auth-bar__name { font-size: 14px; font-weight: 500; color: var(--ait-text); }
.ait-auth-bar__badge {
  font-size: 12px; font-weight: 500;
  padding: 3px 10px; border-radius: 20px;
  background: var(--ait-bg); border: 1px solid var(--ait-border);
  color: var(--ait-text-2); margin-left: auto;
}