:root {
  color-scheme: light;
  --bg: #f5f7fb;
  --panel: #ffffff;
  --text: #0e1a2b;
  --muted: #5e6a7a;
  --border: #d7dfea;
  --primary: #1f7aec;
  --danger: #d34242;
  --success: #1f8f54;
  --warning: #c27c0f;
  --shadow: 0 18px 38px rgba(13, 23, 41, 0.08);
  font-family: "Inter", "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
}

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 2.5rem 6vw 1.5rem;
}

h1 {
  margin: 0 0 0.4rem;
  font-size: clamp(1.8rem, 3vw, 2.6rem);
}

.subtitle {
  margin: 0;
  color: var(--muted);
}

.header-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.layout {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(280px, 0.7fr);
  gap: 2rem;
  padding: 0 6vw 4rem;
}

.panel {
  background: var(--panel);
  border-radius: 18px;
  padding: 1.5rem;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  min-height: 120px;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}

.filters {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

input, select, textarea {
  width: 100%;
  padding: 0.65rem 0.8rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  font-size: 0.95rem;
  font-family: inherit;
  background: #fff;
  color: var(--text);
}

input[type="search"] {
  min-width: 180px;
}

button {
  border: none;
  border-radius: 999px;
  padding: 0.55rem 1.2rem;
  font-weight: 600;
  cursor: pointer;
}

button.primary {
  background: var(--primary);
  color: #fff;
}

button.ghost {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
}

button.danger {
  color: #fff;
  background: var(--danger);
  border: none;
}

button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.event-list {
  display: grid;
  gap: 1rem;
}

.event-card {
  display: grid;
  grid-template-columns: 12px 1fr;
  gap: 1rem;
  padding: 1rem;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: #fff;
  box-shadow: 0 6px 20px rgba(13, 23, 41, 0.06);
}

.event-color {
  border-radius: 999px;
  background: var(--primary);
}

.event-title {
  margin: 0 0 0.35rem;
}

.event-meta {
  font-size: 0.9rem;
  color: var(--muted);
}

.event-notes {
  margin: 0.6rem 0 0.8rem;
  color: var(--muted);
}

.rsvp-grid {
  display: grid;
  gap: 0.8rem;
}

.rsvp-buttons {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.rsvp {
  padding: 0.4rem 1rem;
  border-radius: 12px;
  border: 1px solid transparent;
  font-size: 0.9rem;
}

.rsvp.yes {
  background: rgba(31, 143, 84, 0.12);
  color: var(--success);
}

.rsvp.maybe {
  background: rgba(194, 124, 15, 0.12);
  color: var(--warning);
}

.rsvp.no {
  background: rgba(211, 66, 66, 0.12);
  color: var(--danger);
}

.rsvp.active {
  border-color: currentColor;
  box-shadow: 0 0 0 2px rgba(0,0,0,0.05) inset;
}

.rsvp-summary {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--muted);
}

.rsvp-names {
  margin-top: 0.8rem;
  display: grid;
  gap: 0.6rem;
  padding: 0.75rem;
  border-radius: 12px;
  border: 1px dashed var(--border);
  background: #fafbff;
  font-size: 0.85rem;
  color: var(--muted);
}

.rsvp-group {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 0.6rem;
  align-items: start;
}

.rsvp-label {
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-size: 0.7rem;
}

.rsvp-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.5rem;
}

.rsvp-pill {
  padding: 0.2rem 0.5rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text);
  font-size: 0.75rem;
}

.summary-chip {
  padding: 0.35rem 0.5rem;
  border-radius: 10px;
  text-align: center;
  border: 1px solid var(--border);
}

.event-actions {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.6rem;
}

.event-form {
  display: grid;
  gap: 0.75rem;
}

.form-actions {
  display: flex;
  gap: 0.75rem;
}

.panel-footer {
  margin-top: 1.2rem;
  color: var(--muted);
  font-size: 0.85rem;
}

.chip {
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  font-size: 0.75rem;
  color: var(--muted);
}

.empty-state {
  text-align: center;
  color: var(--muted);
  padding: 2rem 0;
}

.hint {
  margin: 0;
}

@media (max-width: 980px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .app-header {
    flex-direction: column;
    align-items: flex-start;
  }
}