:root {
  --bg-main: #1b1d22;
  --bg-surface: #23262d;
  --bg-surface-2: #2a2e36;
  --line: #3b414d;
  --line-soft: #444b59;
  --text: #eef0f5;
  --text-soft: #b5bdc9;
  --brand: #5865f2;
  --brand-hover: #4752c4;
  --success: #43b581;
  --danger: #ed4245;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Segoe UI", "Noto Sans", sans-serif;
  background: radial-gradient(120% 90% at 50% 0%, #2a2e38 0%, var(--bg-main) 55%);
  color: var(--text);
  padding: 1.25rem;
}

.app-shell {
  width: min(1120px, 100%);
  margin: 0 auto;
}

.app-header {
  text-align: center;
  margin-bottom: 1.25rem;
}

.app-header h1 {
  margin: 0;
  font-size: clamp(1.8rem, 3vw, 2.25rem);
  letter-spacing: 0.02em;
}

.app-header p {
  margin: 0.45rem 0 0;
  color: var(--text-soft);
}

.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1rem;
}

.card {
  background: linear-gradient(180deg, var(--bg-surface-2), var(--bg-surface));
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1rem;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.22);
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.card:hover {
  border-color: var(--line-soft);
  transform: translateY(-2px);
}

.card h2 {
  margin: 0;
  font-size: 1.05rem;
}

.subtitle {
  margin: 0.4rem 0 0.9rem;
  color: var(--text-soft);
  font-size: 0.92rem;
  line-height: 1.35;
}

.label {
  display: block;
  color: var(--text-soft);
  font-size: 0.84rem;
  margin-bottom: 0.4rem;
}

.input,
.copy-btn,
.color-input {
  border-radius: 10px;
  border: 1px solid var(--line);
  font-size: 0.92rem;
}

.input,
.color-input {
  width: 100%;
  color: var(--text);
  background: #1b1e24;
  padding: 0.64rem 0.72rem;
}

.input:focus,
.color-input:focus {
  outline: 2px solid rgba(88, 101, 242, 0.45);
  outline-offset: 1px;
}

.textarea {
  resize: vertical;
  min-height: 44px;
  font-family: inherit;
}

.output {
  font-family: Consolas, "Courier New", monospace;
}

.result-list {
  display: grid;
  gap: 0.55rem;
  margin-top: 0.8rem;
}

.copy-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.5rem;
  align-items: start;
}

.copy-btn {
  background: var(--brand);
  color: #fff;
  padding: 0.58rem 0.8rem;
  cursor: pointer;
  transition: background-color 0.2s ease, transform 0.2s ease;
}

.copy-btn:hover {
  background: var(--brand-hover);
  transform: translateY(-1px);
}

.copy-btn:active {
  transform: translateY(0);
}

.copy-btn.copied {
  background: var(--success);
}

.color-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 44px;
  gap: 0.6rem;
  align-items: center;
}

.color-input {
  height: 42px;
  padding: 0.2rem;
}

.color-preview {
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #5865f2;
}

.counter {
  margin: 0.75rem 0 0.55rem;
  color: var(--text-soft);
}

.limits {
  display: grid;
  gap: 0.45rem;
}

.limit-row {
  display: flex;
  justify-content: space-between;
  gap: 0.8rem;
  background: #1d2026;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.5rem 0.65rem;
  font-size: 0.88rem;
}

.limit-row.ok {
  border-color: rgba(67, 181, 129, 0.5);
}

.limit-row.over {
  border-color: rgba(237, 66, 69, 0.65);
}

.limit-row .status {
  font-weight: 600;
}

.limit-row.ok .status {
  color: var(--success);
}

.limit-row.over .status {
  color: var(--danger);
}

.helper {
  margin: 0.7rem 0;
  color: var(--text-soft);
  font-size: 0.86rem;
}

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

.emoji-preview {
  width: min(130px, 100%);
  height: auto;
  image-rendering: -webkit-optimize-contrast;
  margin-bottom: 0.6rem;
}

.hidden {
  display: none;
}

@media (max-width: 720px) {
  body {
    padding: 0.85rem;
  }

  .card {
    padding: 0.9rem;
  }

  .copy-row {
    grid-template-columns: minmax(0, 1fr);
  }

  .copy-btn {
    width: 100%;
  }
}