:root {
  --bg: #05070d;
  --bg-2: #0d1220;
  --card: rgba(13, 18, 32, 0.75);
  --card-strong: rgba(15, 23, 42, 0.92);
  --text: #e2e8f0;
  --muted: #8ea2c0;
  --accent: #06b6d4;
  --accent-2: #22d3ee;
  --warning: #f59e0b;
  --danger: #ef4444;
  --success: #22c55e;
  --border: rgba(148, 163, 184, 0.22);
  --shadow: 0 20px 48px rgba(0, 0, 0, 0.42);
}

* {
  box-sizing: border-box;
}

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

body {
  font-family: "Space Grotesk", sans-serif;
  color: var(--text);
  background:
    radial-gradient(1200px 700px at 12% -10%, #123f58 0%, transparent 60%),
    radial-gradient(900px 520px at 92% 12%, #3a2f58 0%, transparent 62%),
    linear-gradient(165deg, var(--bg) 0%, var(--bg-2) 100%);
  overflow-x: hidden;
}

.bg-orb {
  position: fixed;
  width: 22rem;
  height: 22rem;
  border-radius: 999px;
  filter: blur(44px);
  opacity: 0.24;
  pointer-events: none;
  z-index: 0;
}

.orb-a {
  background: #0ea5e9;
  top: 12%;
  left: -8%;
  animation: driftA 15s ease-in-out infinite;
}

.orb-b {
  background: #14b8a6;
  right: -9%;
  bottom: 8%;
  animation: driftB 18s ease-in-out infinite;
}

@keyframes driftA {
  0% { transform: translate3d(0, 0, 0); }
  50% { transform: translate3d(34px, 16px, 0); }
  100% { transform: translate3d(0, 0, 0); }
}

@keyframes driftB {
  0% { transform: translate3d(0, 0, 0); }
  50% { transform: translate3d(-26px, -14px, 0); }
  100% { transform: translate3d(0, 0, 0); }
}

.splash-screen {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  background:
    radial-gradient(780px 420px at center, rgba(14, 165, 233, 0.24) 0%, rgba(2, 6, 23, 0.92) 58%),
    rgba(2, 6, 23, 0.97);
  z-index: 20;
  transition: opacity 520ms ease, visibility 520ms ease;
}

.splash-screen.hidden {
  opacity: 0;
  visibility: hidden;
}

.splash-core {
  text-align: center;
  animation: rise 1000ms ease both;
}

.splash-mark {
  font-size: clamp(1.7rem, 4.6vw, 3rem);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-weight: 700;
}

.splash-powered {
  margin-top: 0.7rem;
  color: #bae6fd;
  font-family: "IBM Plex Mono", monospace;
  letter-spacing: 0.09em;
}

@keyframes rise {
  0% { opacity: 0; transform: translateY(12px); }
  100% { opacity: 1; transform: translateY(0); }
}

.page-shell {
  position: relative;
  z-index: 1;
  max-width: 1140px;
  margin: 0 auto;
  padding: 1.3rem;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 420ms ease, transform 420ms ease;
}

body.ready .page-shell {
  opacity: 1;
  transform: translateY(0);
}

.topbar {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: end;
  margin-bottom: 1rem;
}

h1,
h2,
h3 {
  margin: 0;
}

h1 {
  font-size: clamp(1.4rem, 3.5vw, 2.05rem);
}

h2 {
  font-size: 1.14rem;
  margin-bottom: 0.45rem;
}

.subtitle {
  margin: 0.3rem 0 0;
  color: var(--muted);
}

.layout {
  display: grid;
  gap: 1rem;
  grid-template-columns: 2.1fr 1fr;
}

.card {
  background: linear-gradient(180deg, rgba(20, 28, 46, 0.8), var(--card));
  border: 1px solid var(--border);
  border-radius: 20px;
  box-shadow: var(--shadow);
  padding: 1rem;
  backdrop-filter: blur(8px);
}

.calendar-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  margin-bottom: 0.8rem;
}

.calendar-nav {
  display: flex;
  gap: 0.45rem;
}

.weekdays,
.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 0.45rem;
}

.weekdays {
  margin-bottom: 0.45rem;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.78rem;
  color: var(--muted);
}

.weekday {
  text-align: center;
  padding: 0.2rem 0;
}

.day-cell {
  min-height: 110px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: linear-gradient(180deg, rgba(13, 18, 32, 0.82), rgba(7, 11, 22, 0.92));
  padding: 0.45rem;
  cursor: pointer;
  transition: transform 120ms ease, border-color 120ms ease;
}

.day-cell:hover {
  transform: translateY(-2px);
  border-color: rgba(34, 211, 238, 0.5);
}

.day-cell.muted {
  opacity: 0.5;
}

.day-cell.today {
  border-color: var(--accent-2);
}

.day-number {
  font-weight: 700;
  font-size: 0.94rem;
}

.event-chip {
  margin-top: 0.28rem;
  display: block;
  width: 100%;
  border: 1px solid rgba(34, 211, 238, 0.22);
  border-radius: 8px;
  background: rgba(6, 182, 212, 0.18);
  color: #d1faff;
  text-align: left;
  padding: 0.24rem 0.35rem;
  font-size: 0.72rem;
  font-family: "IBM Plex Mono", monospace;
  cursor: pointer;
}

.event-list {
  list-style: none;
  margin: 0.75rem 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.event-list button {
  width: 100%;
  text-align: left;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: rgba(15, 23, 42, 0.84);
  color: var(--text);
  padding: 0.62rem;
  cursor: pointer;
}

.event-title {
  font-weight: 600;
}

.event-meta {
  color: var(--muted);
  font-size: 0.83rem;
  margin-top: 0.18rem;
  font-family: "IBM Plex Mono", monospace;
}

.empty-message {
  margin: 0.85rem 0 0;
  color: var(--muted);
}

.auth-notice {
  color: var(--muted);
  margin: 0.5rem 0 0.62rem;
}

.auth-form {
  display: grid;
  gap: 0.45rem;
}

.auth-actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-top: 0.35rem;
}

.top-gap {
  margin-top: 0.65rem;
}

.disabled {
  opacity: 0.45;
  pointer-events: none;
}

.btn {
  border: 1px solid rgba(148, 163, 184, 0.35);
  background: rgba(15, 23, 42, 0.9);
  color: var(--text);
  border-radius: 10px;
  padding: 0.45rem 0.78rem;
  font-weight: 600;
  cursor: pointer;
}

.btn:hover {
  border-color: rgba(34, 211, 238, 0.44);
}

.btn.primary {
  background: linear-gradient(90deg, var(--accent) 0%, #0ea5e9 100%);
  border-color: transparent;
  color: #03131a;
}

.btn.danger {
  border-color: rgba(239, 68, 68, 0.5);
  color: #fecaca;
}

.btn.busy {
  opacity: 0.7;
  pointer-events: none;
}

.event-dialog {
  border: 1px solid var(--border);
  border-radius: 16px;
  width: min(560px, 92vw);
  padding: 0;
  background: var(--card-strong);
  color: var(--text);
}

.event-dialog::backdrop {
  background: rgba(2, 6, 23, 0.7);
}

#eventForm {
  display: grid;
  gap: 0.55rem;
  padding: 1rem;
}

label {
  font-size: 0.88rem;
  color: var(--muted);
}

input,
textarea {
  border: 1px solid rgba(148, 163, 184, 0.35);
  border-radius: 10px;
  padding: 0.52rem;
  font-family: inherit;
  color: var(--text);
  background: rgba(2, 6, 23, 0.62);
}

input:focus,
textarea:focus {
  outline: 2px solid rgba(34, 211, 238, 0.3);
  border-color: rgba(34, 211, 238, 0.6);
}

.dialog-actions {
  margin-top: 0.35rem;
  display: flex;
  justify-content: end;
  gap: 0.5rem;
}

.status-message {
  margin: 0.75rem 0 0.3rem;
  border: 1px solid var(--border);
  border-left-width: 4px;
  border-radius: 10px;
  padding: 0.52rem 0.62rem;
  font-size: 0.93rem;
}

.status-message.info {
  border-left-color: var(--accent-2);
  color: #b6effa;
  background: rgba(6, 182, 212, 0.12);
}

.status-message.success {
  border-left-color: var(--success);
  color: #bbf7d0;
  background: rgba(34, 197, 94, 0.14);
}

.status-message.error {
  border-left-color: var(--danger);
  color: #fecaca;
  background: rgba(239, 68, 68, 0.14);
}

.hidden {
  display: none;
}

@media (max-width: 900px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .topbar {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    width: 100%;
  }
}