:root {
  --green:       #0f7d3a;
  --green-dark:  #0a5b2a;
  --green-soft:  #d9efdf;
  --red:         #b91c1c;
  --blue:        #1e4ed8;
  --blue-soft:   #e0e8ff;
  --bg:          #f5f6f4;
  --surface:     #ffffff;
  --text:        #1b1f1c;
  --muted:       #5d6a61;
  --border:      #dde2dc;
  --radius:      10px;
  --shadow:      0 2px 8px rgba(0,0,0,0.08);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.5;
}

button { font-family: inherit; cursor: pointer; }
input  { font-family: inherit; font-size: 16px; }

/* ── Auth screen ──────────────────────────────────────────────────────────── */

#auth-view {
  min-height: 100vh;
  background: var(--green);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.auth-card {
  background: var(--surface);
  border-radius: 16px;
  padding: 2rem;
  width: 100%;
  max-width: 400px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.25);
}

.auth-card h1 {
  text-align: center;
  margin-bottom: 1.5rem;
  font-size: 1.5rem;
}

.auth-tabs {
  display: flex;
  border-bottom: 2px solid var(--border);
  margin-bottom: 1.25rem;
}

.auth-tab {
  flex: 1;
  background: none;
  border: none;
  border-bottom: 3px solid transparent;
  margin-bottom: -2px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--muted);
  padding: 0.6rem;
}

.auth-tab.active {
  color: var(--green-dark);
  border-bottom-color: var(--green);
}

.hint {
  font-size: 0.85rem;
  color: var(--muted);
  background: var(--green-soft);
  padding: 0.6rem 0.8rem;
  border-radius: 8px;
  margin-top: 1rem;
  text-align: center;
}

/* ── App bar ─────────────────────────────────────────────────────────────── */

header {
  background: var(--green);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.25rem;
  position: sticky;
  top: 0;
  z-index: 10;
  box-shadow: 0 1px 4px rgba(0,0,0,0.15);
}

.app-title { font-size: 1.1rem; font-weight: 700; }

.user-bar {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.9rem;
}

/* ── Layout ──────────────────────────────────────────────────────────────── */

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 1rem;
  padding-bottom: 4rem;
}

main section + section { margin-top: 1.5rem; }

h2 { font-size: 1.15rem; margin-bottom: 0.75rem; }
h3 { font-size: 1rem; margin: 1rem 0 0.5rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.05em; font-size: 0.8rem; }

/* ── Card ────────────────────────────────────────────────────────────────── */

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  box-shadow: var(--shadow);
}

/* ── Forms ───────────────────────────────────────────────────────────────── */

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  margin-bottom: 0.75rem;
}

.form-group label {
  font-size: 0.85rem;
  color: var(--muted);
  font-weight: 600;
}

.form-group input {
  padding: 0.65rem 0.85rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  width: 100%;
}

.form-group input:focus {
  outline: none;
  border-color: var(--green);
  box-shadow: 0 0 0 3px var(--green-soft);
}

.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
  gap: 0.75rem;
}

.form-error {
  color: var(--red);
  font-size: 0.88rem;
  min-height: 1.2em;
  margin-bottom: 0.5rem;
}

/* ── Buttons ─────────────────────────────────────────────────────────────── */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.6rem 1rem;
  border-radius: 8px;
  border: 1px solid transparent;
  font-weight: 600;
  font-size: 0.95rem;
  min-height: 42px;
  transition: background 0.15s;
}

.btn-primary   { background: var(--green); color: #fff; }
.btn-primary:hover { background: var(--green-dark); }

.btn-secondary { background: var(--surface); color: var(--text); border-color: var(--border); }
.btn-secondary:hover { background: #eef0ed; }

.btn-ghost { background: rgba(255,255,255,0.15); color: #fff; border-color: rgba(255,255,255,0.35); }
.btn-ghost:hover { background: rgba(255,255,255,0.25); }

.btn-danger { background: var(--red); color: #fff; }
.btn-danger:hover { background: #8c1414; }

.btn-sm  { padding: 0.4rem 0.75rem; min-height: 34px; font-size: 0.85rem; }

.full-width { width: 100%; }

.btn:disabled { opacity: 0.55; cursor: not-allowed; }

/* ── Actions row ─────────────────────────────────────────────────────────── */

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0.75rem 0 1rem;
}

/* ── Event cards (list view) ─────────────────────────────────────────────── */

.event-card {
  margin-bottom: 0.75rem;
  cursor: pointer;
  transition: transform 0.05s, box-shadow 0.15s;
}

.event-card:hover { box-shadow: 0 6px 20px rgba(0,0,0,0.12); }
.event-card:active { transform: scale(0.995); }

.event-card-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.5rem;
  margin-bottom: 0.35rem;
}

.event-title { font-weight: 600; font-size: 1.05rem; }
.event-time  { font-weight: 600; font-variant-numeric: tabular-nums; color: var(--text); }

.event-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem 0.75rem;
  font-size: 0.875rem;
  color: var(--muted);
}

.chip-row { margin-top: 0.5rem; display: flex; flex-wrap: wrap; gap: 0.35rem; }

/* ── Event detail view ───────────────────────────────────────────────────── */

.back-btn {
  background: none;
  border: none;
  color: var(--muted);
  font-size: 1rem;
  padding: 0.4rem 0;
  margin-bottom: 0.75rem;
  display: block;
}

.back-btn:hover { color: var(--text); }

#event-detail-content h2 { margin-bottom: 0.4rem; font-size: 1.3rem; color: var(--text); }

.event-meta-detail {
  color: var(--muted);
  font-size: 0.95rem;
  margin-bottom: 0.5rem;
  line-height: 1.6;
}

/* ── Chips ───────────────────────────────────────────────────────────────── */

.chip {
  display: inline-flex;
  align-items: center;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  background: #eef0ed;
  color: var(--muted);
}

.chip-green { background: var(--green-soft); color: var(--green-dark); }
.chip-blue  { background: var(--blue-soft);  color: var(--blue); }

/* ── Signup list ─────────────────────────────────────────────────────────── */

.signup-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.signup-list li {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.35rem 0.7rem;
  font-size: 0.9rem;
}

/* ── Rounds & games ──────────────────────────────────────────────────────── */

.round {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 0.75rem;
}

.round-header {
  background: var(--green-soft);
  color: var(--green-dark);
  padding: 0.5rem 1rem;
  font-weight: 700;
}

.games-grid {
  display: grid;
  gap: 0.6rem;
  padding: 0.75rem;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
}

.game {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.6rem 0.8rem;
}

.court-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
  font-weight: 700;
  margin-bottom: 0.3rem;
}

.player-list {
  margin: 0;
  padding-left: 1.1rem;
  font-size: 0.95rem;
}

.player-list li.is-me {
  font-weight: 700;
  color: var(--green-dark);
}

.waiting {
  padding: 0.5rem 0.75rem;
  border-top: 1px dashed var(--border);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
}

.waiting-label {
  font-size: 0.8rem;
  font-weight: 700;
  color: #c2410c;
}

/* ── Misc text ───────────────────────────────────────────────────────────── */

.muted { color: var(--muted); font-size: 0.95rem; padding: 0.75rem 0; }
.error { color: var(--red); font-size: 0.95rem; }

/* ── Toast notification ──────────────────────────────────────────────────── */

.toast {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: #1b1f1c;
  color: #fff;
  padding: 0.7rem 1.1rem;
  border-radius: 8px;
  font-size: 0.9rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s, transform 0.2s;
  z-index: 999;
  max-width: calc(100% - 2rem);
  box-shadow: 0 4px 16px rgba(0,0,0,0.2);
}

.toast.visible { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast.error   { background: #7f1d1d; }