/* ============================================
   Components v3: buttons, forms, cards, banners, animations
   ============================================ */

/* =========================
   BUTTONS
   ========================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 48px;
  padding: 0 24px;
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: var(--tracking-snug);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
  white-space: nowrap;
  position: relative;
  text-decoration: none;
  -webkit-tap-highlight-color: transparent;
}

.btn:disabled, .btn[aria-disabled="true"] {
  opacity: 0.5;
  pointer-events: none;
}

.btn svg { width: 16px; height: 16px; flex-shrink: 0; }

.btn-primary {
  background: var(--color-fg);
  color: #fff;
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  background: var(--color-fg-1);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-primary:active {
  transform: translateY(0);
  background: var(--color-fg-2);
}

.btn-brand {
  background: var(--color-brand);
  color: #fff;
  box-shadow: var(--shadow-brand);
}

.btn-brand:hover {
  background: var(--color-brand-hover);
  transform: translateY(-1px);
  box-shadow: 0 12px 28px rgba(231, 52, 42, 0.32);
}

.btn-brand:active {
  background: var(--color-brand-active);
  transform: translateY(0);
}

.btn-light {
  background: #fff;
  color: var(--color-fg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-xs);
}

.btn-light:hover {
  border-color: var(--color-fg-7);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.btn-ghost {
  background: transparent;
  color: var(--color-fg);
}

.btn-ghost:hover { background: var(--color-bg-2); }

.btn-dark {
  background: var(--color-fg);
  color: #fff;
}

.btn-outline {
  background: transparent;
  color: var(--color-fg);
  border: 1px solid var(--color-border-strong);
}

.btn-outline:hover {
  border-color: var(--color-fg);
  background: var(--color-bg-1);
}

.btn-link {
  height: auto;
  padding: 0;
  background: transparent;
  color: var(--color-fg);
  font-weight: 500;
  border-radius: 0;
}

.btn-link::after {
  content: "→";
  margin-left: 4px;
  transition: transform var(--duration-fast);
}

.btn-link:hover::after { transform: translateX(4px); }

.btn-sm { height: 36px; padding: 0 16px; font-size: var(--text-xs); }
.btn-lg { height: 56px; padding: 0 32px; font-size: var(--text-base); }
.btn-block { width: 100%; }
.btn-pill { border-radius: var(--radius-full); }

/* =========================
   CARDS
   ========================= */
.card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  transition: all var(--duration-base) var(--ease-out);
  position: relative;
}

.card-hover {
  cursor: pointer;
}

.card-hover:hover {
  border-color: var(--color-fg-7);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.card-padless { padding: 0; }
.card-soft { background: var(--color-bg-1); border-color: var(--color-border); }
.card-dark {
  background: var(--color-fg);
  color: rgba(255, 255, 255, 0.9);
  border-color: var(--color-fg-2);
}

.card-dark h1, .card-dark h2, .card-dark h3 { color: #fff; }

/* =========================
   BADGES / CHIPS / STATUS
   ========================= */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  height: 22px;
  padding: 0 8px;
  border-radius: var(--radius-full);
  font-size: var(--text-2xs);
  font-weight: 500;
  letter-spacing: var(--tracking-wide);
  background: var(--color-bg-2);
  color: var(--color-fg-3);
  white-space: nowrap;
}

.badge svg { width: 12px; height: 12px; }

.badge-brand { background: var(--color-brand-softer); color: var(--color-brand); }
.badge-dark { background: var(--color-fg); color: #fff; }
.badge-light { background: #fff; border: 1px solid var(--color-border); color: var(--color-fg-3); }
.badge-accent { background: var(--color-accent-softer); color: var(--color-accent); }
.badge-warn { background: var(--color-warning-soft); color: var(--color-warning); }
.badge-info { background: var(--color-info-soft); color: var(--color-info); }
.badge-danger { background: var(--color-danger-soft); color: var(--color-danger); }

.badge-lg { height: 28px; padding: 0 12px; font-size: var(--text-xs); }

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 30px;
  padding: 0 12px;
  border-radius: var(--radius-full);
  background: #fff;
  border: 1px solid var(--color-border);
  font-size: var(--text-xs);
  color: var(--color-fg-3);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
}

.chip:hover { border-color: var(--color-fg-7); }

.chip.active {
  background: var(--color-fg);
  border-color: var(--color-fg);
  color: #fff;
}

.chip svg { width: 12px; height: 12px; }

/* Verified / secure (ИЗУМРУД — допустимый use ≤5%) */
.verified-pill {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  height: 24px;
  padding: 0 10px 0 8px;
  background: var(--color-accent-softer);
  color: var(--color-accent);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  border: 1px solid var(--color-accent-soft);
}

.verified-pill svg { width: 12px; height: 12px; stroke-width: 2.5; }

/* =========================
   FORMS
   ========================= */
.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.field-label {
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-fg-3);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
}

.field-input,
.field-textarea,
.field-select {
  width: 100%;
  height: 48px;
  padding: 0 16px;
  background: #fff;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  color: var(--color-fg);
  transition: all var(--duration-fast) var(--ease-out);
  -webkit-appearance: none;
  appearance: none;
}

.field-input:hover,
.field-textarea:hover,
.field-select:hover {
  border-color: var(--color-fg-6);
}

.field-input:focus,
.field-textarea:focus,
.field-select:focus {
  border-color: var(--color-fg);
  outline: none;
  box-shadow: var(--shadow-ring-focus);
}

.field-textarea {
  height: auto;
  min-height: 96px;
  padding: 12px 16px;
  resize: vertical;
  font-family: inherit;
  line-height: var(--leading-normal);
}

.field-select {
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='https://drive.google.com/file/d/1LRiD0ucFB5RR_8cy8-7aBrntTfHqd3w1/view?usp=sharing' width='12' height='8' viewBox='0 0 12 8' fill='none'><path d='M1 1.5L6 6.5L11 1.5' stroke='%23525252' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/></svg>");
  background-repeat: no-repeat;
  background-position: right 16px center;
  background-size: 12px 8px;
  padding-right: 40px;
}

.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-3); }
@media (max-width: 600px) { .field-row { grid-template-columns: 1fr; } }

.field-help { font-size: var(--text-xs); color: var(--color-fg-5); }
.field-error { font-size: var(--text-xs); color: var(--color-danger); }

/* Checkbox / Radio */
.choice {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
}

.choice:hover { border-color: var(--color-fg-6); background: var(--color-bg-1); }

.choice input { display: none; }

.choice input:checked + .choice-body { color: var(--color-fg); }

.choice:has(input:checked) {
  border-color: var(--color-fg);
  background: var(--color-bg-1);
  box-shadow: inset 0 0 0 1px var(--color-fg);
}

.choice-body { flex: 1; }
.choice-body .title { font-size: var(--text-sm); font-weight: 500; margin-bottom: 2px; }
.choice-body .desc { font-size: var(--text-xs); color: var(--color-fg-5); }

.choice-check {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 1.5px solid var(--color-border-strong);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all var(--duration-fast) var(--ease-out);
}

.choice:has(input:checked) .choice-check {
  background: var(--color-fg);
  border-color: var(--color-fg);
}

.choice:has(input:checked) .choice-check::after {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #fff;
}

/* Switch */
.switch {
  position: relative;
  width: 36px;
  height: 20px;
  background: var(--color-bg-3);
  border-radius: 999px;
  cursor: pointer;
  transition: background var(--duration-fast) var(--ease-out);
  flex-shrink: 0;
}

.switch.on { background: var(--color-fg); }

.switch::after {
  content: "";
  position: absolute;
  top: 2px;
  left: 2px;
  width: 16px;
  height: 16px;
  background: #fff;
  border-radius: 50%;
  box-shadow: var(--shadow-sm);
  transition: transform var(--duration-base) var(--ease-spring);
}

.switch.on::after { transform: translateX(16px); }

/* =========================
   TABS / STEPPER / BREADCRUMBS
   ========================= */
.tabs {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  padding: 4px;
  background: var(--color-bg-2);
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
}

.tabs a {
  display: inline-flex;
  align-items: center;
  height: 36px;
  padding: 0 16px;
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-fg-4);
  transition: all var(--duration-fast) var(--ease-out);
}

.tabs a:hover { color: var(--color-fg); }

.tabs a.active {
  background: #fff;
  color: var(--color-fg);
  box-shadow: var(--shadow-sm);
}

.stepper {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-8);
}

.step {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.step-circle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 1.5px solid var(--color-border-strong);
  background: #fff;
  color: var(--color-fg-5);
  font-size: var(--text-xs);
  font-weight: 600;
  flex-shrink: 0;
  transition: all var(--duration-fast) var(--ease-out);
}

.step.active .step-circle {
  background: var(--color-fg);
  color: #fff;
  border-color: var(--color-fg);
}

.step.done .step-circle {
  background: var(--color-fg);
  color: #fff;
  border-color: var(--color-fg);
}

.step-label {
  font-size: var(--text-sm);
  color: var(--color-fg-5);
  font-weight: 500;
  white-space: nowrap;
}

.step.active .step-label,
.step.done .step-label { color: var(--color-fg); }

.step-line {
  flex: 1;
  height: 1.5px;
  background: var(--color-border);
  min-width: 32px;
  margin: 0 8px;
  position: relative;
}

.step-line.done { background: var(--color-fg); }

@media (max-width: 600px) {
  .step-label { display: none; }
  .step-line { margin: 0 4px; }
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: var(--text-sm);
  color: var(--color-fg-5);
  margin-bottom: var(--space-4);
  flex-wrap: wrap;
}

.breadcrumb a { color: var(--color-fg-5); transition: color var(--duration-fast); }
.breadcrumb a:hover { color: var(--color-fg); }
.breadcrumb .sep { color: var(--color-fg-7); }
.breadcrumb .current { color: var(--color-fg); font-weight: 500; }

/* =========================
   ALERTS / BANNERS
   ========================= */
.alert {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  border: 1px solid var(--color-border);
  background: var(--color-bg-1);
  line-height: var(--leading-relaxed);
}

.alert svg { width: 20px; height: 20px; flex-shrink: 0; }

.alert-info { background: var(--color-info-soft); border-color: var(--color-info-soft); color: var(--color-info); }
.alert-success { background: var(--color-success-soft); border-color: var(--color-accent-soft); color: var(--color-success); }
.alert-warn { background: var(--color-warning-soft); border-color: var(--color-warning-soft); color: var(--color-warning); }
.alert-danger { background: var(--color-danger-soft); border-color: var(--color-danger-soft); color: var(--color-danger); }
.alert-dark { background: var(--color-fg); color: rgba(255, 255, 255, 0.95); border-color: var(--color-fg); }

.alert .alert-body { flex: 1; min-width: 0; }
.alert .alert-title { font-weight: 600; margin-bottom: 2px; }
.alert .alert-text { color: var(--color-fg-3); font-size: var(--text-xs); }

/* =========================
   TYPOGRAPHY
   ========================= */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-fg-4);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wider);
  margin-bottom: var(--space-4);
}

.eyebrow::before {
  content: "";
  width: 20px;
  height: 1.5px;
  background: var(--color-fg-7);
}

.eyebrow.accent { color: var(--color-brand); }
.eyebrow.accent::before { background: var(--color-brand); }

.text-brand { color: var(--color-brand); }
.text-muted { color: var(--color-fg-4); }
.text-dim { color: var(--color-fg-5); }
.text-sm { font-size: var(--text-sm); }
.text-xs { font-size: var(--text-xs); }
.text-lg { font-size: var(--text-lg); }
.text-num { font-feature-settings: "tnum"; }
.text-balance { text-wrap: balance; }

.kbd {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 20px;
  height: 20px;
  padding: 0 6px;
  background: #fff;
  border: 1px solid var(--color-border-strong);
  border-bottom-width: 2px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 500;
  font-family: var(--font-mono);
  color: var(--color-fg-4);
}

/* =========================
   DIVIDER
   ========================= */
.divider {
  height: 1px;
  background: var(--color-border);
  border: none;
  margin: var(--space-6) 0;
}

.divider-fade {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-border-strong), transparent);
  border: none;
}

/* =========================
   KBD Hint (cmd+k)
   ========================= */
.kbd-hint {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 0 10px 0 12px;
  height: 32px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  background: var(--color-bg-1);
  font-size: var(--text-xs);
  color: var(--color-fg-5);
  transition: all var(--duration-fast) var(--ease-out);
}

.kbd-hint:hover {
  background: #fff;
  border-color: var(--color-border-strong);
}

/* =========================
   GRADIENT TEXT
   ========================= */
.gradient-text {
  background: linear-gradient(135deg, var(--color-fg) 0%, var(--color-fg-4) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

/* =========================
   MARQUEE
   ========================= */
.marquee {
  overflow: hidden;
  position: relative;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 5%, #000 95%, transparent);
          mask-image: linear-gradient(90deg, transparent, #000 5%, #000 95%, transparent);
}

.marquee-track {
  display: flex;
  gap: var(--space-12);
  width: max-content;
  animation: marquee 32s linear infinite;
}

@keyframes marquee {
  to { transform: translateX(-50%); }
}

/* =========================
   SKELETON (loading state)
   ========================= */
.skeleton {
  background: linear-gradient(90deg, var(--color-bg-2) 25%, var(--color-bg-3) 50%, var(--color-bg-2) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.6s linear infinite;
  border-radius: var(--radius-sm);
}

/* =========================
   TOAST
   ========================= */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--color-fg);
  color: #fff;
  padding: 12px 20px;
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 500;
  box-shadow: var(--shadow-xl);
  z-index: var(--z-toast);
  opacity: 0;
  pointer-events: none;
  transition: all 320ms var(--ease-spring);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.toast svg { width: 16px; height: 16px; }