:root {
  color-scheme: light;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #f4f7fb;
  color: #1f2937;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
}

.page {
  display: flex;
  justify-content: center;
  padding: 40px 24px;
}

.container {
  width: min(100%, 720px);
}

h1 {
  margin: 0 0 4px;
  font-size: 1.8rem;
  font-weight: 700;
}

h2 {
  margin: 0 0 4px;
  font-size: 1.3rem;
  font-weight: 600;
}

h3 {
  margin: 0 0 8px;
  font-size: 1.1rem;
}

.subtitle {
  margin: 0 0 24px;
  color: #6b7280;
  line-height: 1.6;
}

hr {
  border: none;
  border-top: 1px solid #e5e7eb;
  margin: 32px 0;
}

/* ── Toolbar ────────────────────────────────────────── */
.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.sort-controls {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  color: #4b5563;
}

.sort-controls select {
  padding: 6px 10px;
  border: 1px solid #d1d5db;
  border-radius: 8px;
  background: #fff;
  font-size: 0.9rem;
  cursor: pointer;
}

/* ── Buttons ────────────────────────────────────────── */
.btn {
  padding: 10px 18px;
  border: none;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: background 0.15s;
}

.btn-primary {
  background: #3b82f6;
  color: #fff;
}

.btn-primary:hover {
  background: #2563eb;
}

.btn-danger {
  background: #ef4444;
  color: #fff;
  padding: 6px 14px;
  font-size: 0.85rem;
}

.btn-danger:hover {
  background: #dc2626;
}

.btn-copy {
  background: #e5e7eb;
  color: #374151;
  padding: 6px 14px;
  font-size: 0.85rem;
}

.btn-copy:hover {
  background: #d1d5db;
}

.btn-copy:disabled {
  background: #d1fae5;
  color: #065f46;
  cursor: default;
}

.key-actions {
  display: flex;
  gap: 8px;
  flex-shrink: 0;
}

/* ── Key list ───────────────────────────────────────── */
.keys-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.empty-state {
  color: #9ca3af;
  font-style: italic;
  margin: 0;
}

.key-card {
  background: #f3f4f6;
  border-radius: 10px;
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.key-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.key-value {
  font-family: "SF Mono", "Fira Code", "Consolas", monospace;
  font-size: 0.95rem;
  color: #1f2937;
  word-break: break-all;
  flex: 1;
}

.key-meta {
  font-size: 0.8rem;
  color: #6b7280;
}

/* ── Form ───────────────────────────────────────────── */
label {
  display: grid;
  gap: 6px;
  margin-bottom: 14px;
  font-size: 0.9rem;
  font-weight: 500;
  color: #374151;
}

input[type="text"],
input[type="file"] {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid #d1d5db;
  border-radius: 10px;
  background: #f9fafb;
  font-size: 0.9rem;
}

form .btn {
  width: 100%;
  padding: 12px 16px;
}

/* ── Feedback & result ──────────────────────────────── */
.feedback {
  margin-top: 12px;
  font-size: 0.9rem;
  color: #1f2937;
}

.result {
  margin-top: 20px;
}

.result.hidden {
  display: none;
}

.result a {
  color: #2563eb;
  word-break: break-all;
}

.preview {
  margin-top: 10px;
  border: 1px solid #e5e7eb;
  border-radius: 12px;
  padding: 10px;
  background: #f8fafc;
}

.preview img {
  width: 100%;
  max-height: 320px;
  object-fit: contain;
  border-radius: 8px;
}