:root {
  --bg: #0F1115;
  --panel: #16181B;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.14);
  --text: #f3f5f8;
  --text-2: #CCCCCC;
  --muted: #8a94a2;
  --accent: #B8C0CB;
  --green: #4ec46a;
  --red: #ff6b6b;
  --radius: 16px;
  --mono: ui-monospace, "SFMono-Regular", "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: "Sora", system-ui, -apple-system, sans-serif;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  background-image:
    radial-gradient(900px 500px at 15% -10%, rgba(184, 192, 203, 0.06), transparent 60%),
    radial-gradient(800px 500px at 100% 0%, rgba(78, 196, 106, 0.045), transparent 55%);
}

.app {
  max-width: 880px;
  margin: 0 auto;
  padding: 48px 24px 72px;
}

/* Header */
.header {
  margin-bottom: 28px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}
.brand-mark {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: linear-gradient(160deg, #1d2024, #121417);
  border: 1px solid var(--border-strong);
  color: var(--accent);
  font-size: 20px;
  font-weight: 700;
}
.brand-name {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0;
}
.tagline {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 15px;
}

/* Panels */
.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 22px;
  margin-bottom: 18px;
}
.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}
.panel-title {
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin: 0 0 14px;
}
.panel-head .panel-title { margin: 0; }
.panel-sub {
  margin: -8px 0 16px;
  color: var(--muted);
  font-size: 13px;
}

/* Grid for preset + next runs */
.grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.grid .panel { margin-bottom: 0; }
@media (max-width: 680px) {
  .grid { grid-template-columns: 1fr; }
}

/* Expression input */
.input-wrap {
  position: relative;
  display: flex;
  align-items: center;
}
.cron-input {
  width: 100%;
  background: #101215;
  border: 1px solid var(--border-strong);
  border-radius: 12px;
  color: var(--text);
  font-family: var(--mono);
  font-size: 20px;
  letter-spacing: 0.02em;
  padding: 16px 44px 16px 16px;
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.cron-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(184, 192, 203, 0.14);
}
.cron-input.is-valid { border-color: rgba(78, 196, 106, 0.55); }
.cron-input.is-invalid { border-color: rgba(255, 107, 107, 0.6); }

.status-dot {
  position: absolute;
  right: 16px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--muted);
  transition: background 0.15s ease, box-shadow 0.15s ease;
}
.status-dot.ok {
  background: var(--green);
  box-shadow: 0 0 0 4px rgba(78, 196, 106, 0.16);
}
.status-dot.bad {
  background: var(--red);
  box-shadow: 0 0 0 4px rgba(255, 107, 107, 0.16);
}

/* Field legend */
.field-legend {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
  margin-top: 12px;
}
.field {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 8px 6px;
  background: #101215;
  border: 1px solid var(--border);
  border-radius: 10px;
  text-align: center;
}
.field-val {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--accent);
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.field small {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
}

/* Error */
.cron-error {
  margin: 14px 0 0;
  color: var(--red);
  font-size: 13px;
  font-family: var(--mono);
}

/* Human text */
.human-text {
  margin: 0;
  font-size: 18px;
  font-weight: 500;
  color: var(--text);
  letter-spacing: -0.01em;
}

/* Controls */
.control {
  margin-bottom: 14px;
}
.control label {
  display: block;
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.control .inline {
  display: flex;
  align-items: center;
  gap: 10px;
}
.control .unit {
  color: var(--text-2);
  font-size: 14px;
}
select,
input[type="number"],
input[type="time"] {
  background: #101215;
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  color: var(--text);
  font-family: inherit;
  font-size: 14px;
  padding: 10px 12px;
  outline: none;
  width: 100%;
  transition: border-color 0.15s ease;
}
input[type="number"] { width: 90px; }
select:focus,
input:focus {
  border-color: var(--accent);
}

/* Buttons */
.btn {
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  border-radius: 10px;
  padding: 11px 18px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease, transform 0.05s ease;
}
.btn:active { transform: translateY(1px); }
.btn-accent {
  background: var(--accent);
  color: #0F1115;
  width: 100%;
  margin-top: 4px;
}
.btn-accent:hover { background: #cbd2db; }
.btn-ghost {
  background: transparent;
  color: var(--text-2);
  border-color: var(--border-strong);
  padding: 8px 14px;
}
.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--text);
}
.btn-ghost.copied {
  color: var(--green);
  border-color: rgba(78, 196, 106, 0.55);
}

/* Next runs */
.next-runs {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.next-runs li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 12px;
  background: #101215;
  border: 1px solid var(--border);
  border-radius: 10px;
}
.next-runs .when {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--text);
}
.next-runs .rel {
  font-size: 12px;
  color: var(--muted);
  white-space: nowrap;
}
.next-runs .empty {
  justify-content: flex-start;
  color: var(--muted);
  font-size: 13px;
}

/* Footer */
.footer {
  margin-top: 40px;
  padding-top: 22px;
  border-top: 1px solid var(--border);
  text-align: center;
  color: var(--muted);
  font-size: 13px;
}
.footer a {
  color: var(--text-2);
  text-decoration: none;
  border-bottom: 1px solid var(--border-strong);
  transition: color 0.15s ease, border-color 0.15s ease;
}
.footer a:hover {
  color: var(--accent);
  border-color: var(--accent);
}