:root {
  --bg-page: #0a0a0f;
  --bg-panel: #141420;
  --bg-input: #1c1c2e;
  --border-soft: rgba(142, 142, 160, 0.2);
  --border-focus: #22223a;
  --text-primary: #eeeef2;
  --text-secondary: #8e8ea0;
  --text-tertiary: #5a5a72;
  --accent: #6e5cff;
  --accent-strong: #5a48f0;
  --danger: #ff6b4a;
  --success: #4ade80;
  --radius: 12px;
  --space: 8px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  background:
    radial-gradient(circle at top right, rgba(110, 92, 255, 0.12), transparent 40%),
    radial-gradient(circle at bottom left, rgba(74, 222, 128, 0.06), transparent 35%),
    var(--bg-page);
  color: var(--text-primary);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

body {
  min-height: 100vh;
  padding: max(12px, env(safe-area-inset-top)) 0 max(20px, env(safe-area-inset-bottom));
}

.container {
  width: min(600px, 100% - 24px);
  margin: 0 auto;
}

.app-shell {
  display: grid;
  gap: 32px;
  padding-bottom: 24px;
}

.app-header {
  position: sticky;
  top: 0;
  z-index: 5;
  backdrop-filter: blur(8px);
  background: linear-gradient(to bottom, rgba(10, 10, 15, 0.9), rgba(10, 10, 15, 0.55));
  padding: 12px 0 8px;
  animation: fadeDown 320ms ease;
}

h1,
h2,
h3,
p {
  margin: 0;
}

h1 {
  font-size: clamp(22px, 5vw, 28px);
  line-height: 1.2;
}

h2 {
  font-size: 22px;
}

h3 {
  font-size: 18px;
}

.section {
  display: grid;
  gap: 12px;
  animation: reveal 300ms ease both;
}

.section-header {
  display: grid;
  gap: 6px;
}

.section-description,
.hint,
.caption {
  color: var(--text-secondary);
  font-size: 13px;
}

.panel {
  background: linear-gradient(165deg, rgba(20, 20, 32, 0.95), rgba(20, 20, 32, 0.84));
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  padding: 14px;
}

.muted {
  color: var(--text-tertiary);
}

.stacked-form,
.stack-gap {
  display: grid;
  gap: 12px;
}

label {
  display: grid;
  gap: 6px;
  font-size: 14px;
}

input,
select {
  width: 100%;
  min-height: 44px;
  border: 1px solid transparent;
  border-radius: 12px;
  padding: 11px 12px;
  color: var(--text-primary);
  background: var(--bg-input);
  outline: none;
  transition: border-color 160ms ease, background 160ms ease;
}

input:focus,
select:focus {
  border-color: var(--border-focus);
  background: color-mix(in srgb, var(--bg-input) 86%, white);
}

input:disabled {
  color: var(--text-secondary);
}

.inline-form,
.input-row,
.validation-row,
.popular-card,
.addon-card {
  display: flex;
  align-items: center;
  gap: 10px;
}

.inline-form input {
  flex: 1;
}

.input-row input {
  flex: 1;
}

.btn {
  min-height: 44px;
  border-radius: 12px;
  border: 1px solid transparent;
  padding: 0 14px;
  font-weight: 600;
  color: var(--text-primary);
  background: #2a2a3f;
}

.btn:disabled {
  opacity: 0.6;
}

.btn-primary {
  background: linear-gradient(180deg, var(--accent), var(--accent-strong));
}

.btn-outline {
  background: transparent;
  border-color: var(--border-soft);
}

.btn-destructive {
  background: color-mix(in srgb, var(--danger) 20%, transparent);
  border-color: color-mix(in srgb, var(--danger) 50%, transparent);
}

.btn-icon {
  min-height: 36px;
  border-radius: 10px;
  padding: 0 10px;
  font-size: 13px;
}

.card-list {
  display: grid;
  gap: 8px;
}

.addon-card,
.popular-card {
  justify-content: space-between;
}

.addon-name {
  font-weight: 700;
  font-size: 15px;
  margin-bottom: 4px;
}

.addon-url {
  color: var(--text-secondary);
  font-size: 13px;
  word-break: break-all;
}

.addon-controls {
  display: flex;
  align-items: center;
  gap: 8px;
}

.toggle {
  position: relative;
  width: 50px;
  height: 28px;
}

.toggle input {
  position: absolute;
  inset: 0;
  opacity: 0;
}

.toggle-track {
  position: absolute;
  inset: 0;
  background: #313149;
  border-radius: 999px;
  transition: background 140ms ease;
}

.toggle-track::after {
  content: "";
  position: absolute;
  top: 3px;
  left: 3px;
  width: 22px;
  height: 22px;
  border-radius: 999px;
  background: #ffffff;
  transition: transform 140ms ease;
}

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

.toggle input:checked + .toggle-track::after {
  transform: translateX(22px);
}

.radio-group {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.radio-pill {
  min-height: 40px;
  border: 1px solid var(--border-soft);
  border-radius: 999px;
  padding: 8px 12px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(28, 28, 46, 0.55);
}

.radio-pill input {
  width: 14px;
  min-height: auto;
  accent-color: var(--accent);
}

.status-badge {
  font-size: 12px;
  border-radius: 999px;
  padding: 6px 10px;
  border: 1px solid var(--border-soft);
}

.status-ok {
  color: var(--success);
  border-color: color-mix(in srgb, var(--success) 40%, transparent);
}

.status-error {
  color: var(--danger);
  border-color: color-mix(in srgb, var(--danger) 40%, transparent);
}

.status-neutral {
  color: var(--text-secondary);
}

.save-chip {
  margin-top: 10px;
  display: inline-flex;
  border-radius: 999px;
  padding: 7px 10px;
  font-size: 12px;
  border: 1px solid var(--border-soft);
}

.save-ok {
  color: var(--success);
}

.save-saving {
  color: var(--accent);
}

.save-error {
  color: var(--danger);
}

a {
  color: color-mix(in srgb, var(--accent) 80%, white);
}

.error-text {
  color: var(--danger);
}

.success-text {
  color: var(--success);
}

.toast {
  position: fixed;
  top: calc(max(10px, env(safe-area-inset-top)) + 4px);
  left: 50%;
  transform: translate(-50%, -18px);
  background: #202038;
  border: 1px solid var(--border-soft);
  border-radius: 999px;
  padding: 10px 14px;
  font-size: 13px;
  opacity: 0;
  pointer-events: none;
  transition: transform 180ms ease, opacity 180ms ease;
  z-index: 20;
}

.toast.show {
  opacity: 1;
  transform: translate(-50%, 0);
}

.toast-success {
  border-color: color-mix(in srgb, var(--success) 40%, transparent);
}

.toast-error {
  border-color: color-mix(in srgb, var(--danger) 50%, transparent);
}

@keyframes reveal {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeDown {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 560px) {
  .popular-card,
  .addon-card,
  .validation-row,
  .inline-form,
  .input-row {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    width: 100%;
  }

  .addon-controls {
    width: 100%;
    justify-content: space-between;
  }
}