:root {
  --accent: #7c5cff;
  --accent-soft: color-mix(in srgb, var(--accent) 35%, transparent);
  --bg: #050506;
  --surface: rgba(255, 255, 255, 0.045);
  --surface-hover: rgba(255, 255, 255, 0.075);
  --border: rgba(255, 255, 255, 0.09);
  --text: #f2f2f5;
  --text-dim: #93939c;
  --danger: #ff5c5c;

  --font: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;

  color-scheme: dark;
}

* { box-sizing: border-box; }

[hidden] { display: none !important; }

html, body {
  margin: 0;
  padding: 0;
  min-height: 100vh;
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
}

body {
  background-image:
    radial-gradient(circle at 100% 0%, var(--accent-soft) 0%, transparent 55%),
    linear-gradient(160deg, transparent 40%, rgba(0,0,0,0.4) 100%);
  background-attachment: fixed;
  min-height: 100vh;
}

button, input, textarea, select {
  font-family: inherit;
  color: inherit;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

a { color: inherit; }

/* ---------- Login ---------- */

.login-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.login-card {
  width: 100%;
  max-width: 360px;
  background: var(--surface);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 44px 36px;
  text-align: center;
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}

.login-eyebrow {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 10px;
}

.login-title {
  font-family: var(--font);
  font-weight: 700;
  font-size: 30px;
  letter-spacing: -0.02em;
  margin: 0 0 8px;
}

.login-sub {
  color: var(--text-dim);
  font-size: 14px;
  margin: 0 0 28px;
}

.login-card input[type="password"] {
  width: 100%;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 13px 16px;
  font-size: 15px;
  margin-bottom: 16px;
  transition: border-color 0.15s ease;
}
.login-card input[type="password"]:focus { border-color: var(--accent); }

.login-card button {
  width: 100%;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 12px;
  padding: 13px 16px;
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  transition: filter 0.15s ease, transform 0.1s ease;
}
.login-card button:hover { filter: brightness(1.12); }
.login-card button:active { transform: scale(0.98); }

.login-error {
  color: var(--danger);
  font-size: 13px;
  margin: 14px 0 0;
}

/* ---------- Layout ---------- */

.app {
  max-width: 1180px;
  margin: 0 auto;
  padding: 28px 24px 60px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  padding-bottom: 22px;
  margin-bottom: 26px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 9px;
  font-weight: 700;
  font-size: 19px;
  letter-spacing: -0.01em;
  min-width: 100px;
}

.brand-mark {
  width: 26px;
  height: 26px;
  border-radius: 8px;
  background: var(--accent);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  color: #fff;
}

.month-nav {
  display: flex;
  align-items: center;
  gap: 14px;
}

.month-title {
  font-weight: 700;
  font-size: 22px;
  letter-spacing: -0.01em;
  margin: 0;
  min-width: 200px;
  text-align: center;
}

.nav-btn {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  width: 34px;
  height: 34px;
  border-radius: 10px;
  cursor: pointer;
  font-size: 15px;
  transition: background 0.15s ease;
}
.nav-btn:hover { background: var(--surface-hover); }

.today-btn, .ghost-btn {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-dim);
  padding: 9px 16px;
  border-radius: 10px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}
.today-btn:hover, .ghost-btn:hover { background: var(--surface-hover); color: var(--text); }

.icon-round-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 16px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s ease;
}
.icon-round-btn:hover { background: var(--surface-hover); }

.topbar-actions { display: flex; gap: 10px; align-items: center; }

/* ---------- Calendar grid ---------- */

.layout {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 28px;
  align-items: start;
}

.calendar-wrap {
  background: var(--surface);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 18px;
}

.weekday-row {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  margin-bottom: 8px;
}

.weekday-row span {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-dim);
  text-align: left;
  padding: 4px 10px;
}

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  grid-auto-rows: 104px;
  gap: 6px;
}

.day-cell {
  background: rgba(255,255,255,0.03);
  border: 1px solid transparent;
  border-radius: 14px;
  padding: 9px;
  position: relative;
  cursor: pointer;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: background 0.15s ease, border-color 0.15s ease;
}

.day-cell:hover { background: var(--surface-hover); border-color: var(--border); }

.day-cell.other-month { opacity: 0.3; }

.day-cell.has-bg { color: #fff; }
.day-cell.has-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  z-index: 0;
  border-radius: 14px;
}
.day-cell.has-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0,0,0,0.1), rgba(0,0,0,0.78));
  z-index: 1;
  border-radius: 14px;
}

.day-cell .day-num {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-dim);
  z-index: 2;
  position: relative;
}

.day-cell.is-today .day-num {
  color: #fff;
  background: var(--accent);
  width: 22px;
  height: 22px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.day-cell.has-bg .day-num { color: #fff; }

.day-labels {
  margin-top: auto;
  z-index: 2;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.day-label {
  font-size: 11px;
  font-weight: 500;
  line-height: 1.3;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  padding: 2px 7px;
  border-radius: 6px;
  background: var(--accent-soft);
  color: var(--text);
}

.day-cell.has-bg .day-label {
  background: rgba(0,0,0,0.4);
}

.day-label.is-reminder { background: rgba(255,255,255,0.09); }
.day-cell.has-bg .day-label.is-reminder { background: rgba(0,0,0,0.45); }

/* ---------- Sidebar ---------- */

.sidebar {
  background: var(--surface);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 18px;
}

.sidebar-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.sidebar-head h2 {
  font-weight: 700;
  font-size: 16px;
  margin: 0;
  letter-spacing: -0.01em;
}

.plus-btn {
  background: var(--accent);
  color: #fff;
  border: none;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  font-size: 17px;
  line-height: 1;
  cursor: pointer;
  transition: filter 0.15s ease;
}
.plus-btn:hover { filter: brightness(1.15); }

.reminder-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.reminder-item {
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 11px 13px;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease;
}
.reminder-item:hover { background: var(--surface-hover); border-color: var(--accent-soft); }

.reminder-item-title {
  font-size: 13.5px;
  font-weight: 600;
  margin-bottom: 3px;
}

.reminder-item-meta {
  font-size: 11.5px;
  color: var(--text-dim);
}

.empty-note {
  color: var(--text-dim);
  font-size: 13px;
}

/* ---------- Overlay / editor / settings ---------- */

.overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.65);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  z-index: 50;
}

.editor-panel, .settings-panel {
  width: 100%;
  max-width: 440px;
  max-height: 90vh;
  overflow-y: auto;
  background: #0d0d10;
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 26px;
  box-shadow: 0 30px 80px rgba(0,0,0,0.6);
}

.editor-head, .settings-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.editor-head h2, .settings-head h2 {
  font-weight: 700;
  font-size: 19px;
  margin: 0;
  letter-spacing: -0.01em;
}

.icon-btn {
  background: none;
  border: none;
  color: var(--text-dim);
  font-size: 22px;
  cursor: pointer;
  line-height: 1;
}
.icon-btn:hover { color: var(--text); }

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 16px;
  font-size: 13px;
  color: var(--text-dim);
}

.field input[type="text"],
.field input[type="date"],
.field input[type="time"],
.field textarea,
.field input[type="file"] {
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 11px 13px;
  font-size: 14px;
  color: var(--text);
  resize: vertical;
}
.field input:focus, .field textarea:focus { border-color: var(--accent); }

.checkbox-field {
  flex-direction: row;
  align-items: center;
  gap: 8px;
}
.checkbox-field input { width: 16px; height: 16px; accent-color: var(--accent); }

.bg-preview-wrap { margin-top: 10px; }
.bg-preview-wrap img {
  width: 100%;
  max-height: 140px;
  object-fit: cover;
  border-radius: 10px;
  border: 1px solid var(--border);
  margin-bottom: 8px;
}

.text-btn {
  background: none;
  border: none;
  color: var(--danger);
  font-size: 12px;
  cursor: pointer;
  padding: 0;
}

.editor-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 8px;
}

.spacer { flex: 1; }

.primary-btn {
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 11px 20px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  transition: filter 0.15s ease;
}
.primary-btn:hover { filter: brightness(1.12); }

.danger-btn {
  background: none;
  border: 1px solid var(--danger);
  color: var(--danger);
  padding: 10px 15px;
  border-radius: 10px;
  font-size: 13px;
  cursor: pointer;
}
.danger-btn:hover { background: rgba(255,92,92,0.1); }

/* ---------- Settings panel ---------- */

.settings-section {
  margin-bottom: 24px;
}

.settings-section h3 {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin: 0 0 12px;
}

.color-swatches {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.swatch {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.1s ease, border-color 0.15s ease;
}
.swatch:hover { transform: scale(1.08); }
.swatch.is-active { border-color: #fff; }

.custom-color-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 12px;
}

.custom-color-wrap input[type="color"] {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: none;
  cursor: pointer;
  padding: 0;
}

.custom-color-wrap span {
  font-size: 12.5px;
  color: var(--text-dim);
}

.notif-status-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 14px;
}

.notif-status-text {
  font-size: 13px;
}

.notif-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--text-dim);
  margin-right: 8px;
}
.notif-dot.is-on { background: #3ddc84; }

/* ---------- Responsive ---------- */

@media (max-width: 860px) {
  .layout { grid-template-columns: 1fr; }
  .calendar-grid { grid-auto-rows: 74px; }
  .day-label { display: none; }
  .month-title { min-width: 0; font-size: 19px; }
  .app { padding: 18px 14px 40px; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}