:root {
  --bg-main: #09090b;
  --bg-surface: #121215;
  --bg-card: #18181b;
  --bg-card-hover: #222227;
  --border-subtle: #27272a;
  --border-strong: #3f3f46;
  --text-main: #fafafa;
  --text-muted: #a1a1aa;
  --text-dark: #71717a;
  --accent: #6366f1;
  --accent-soft: rgba(99, 102, 241, 0.15);
  --rose: #f43f5e;

  /* Heavy Motion Curves */
  --ease-spring: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-main);
  color: var(--text-main);
  height: 100vh;
  overflow: hidden;
  font-size: 14px;
  animation: pageIn 0.5s var(--ease-spring) forwards;
}

@keyframes pageIn {
  from { opacity: 0; transform: scale(0.99); }
  to { opacity: 1; transform: scale(1); }
}

#app { display: flex; height: 100vh; width: 100%; }

.sidebar {
  width: 250px;
  background: var(--bg-surface);
  border-right: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  padding: 20px 16px;
  gap: 18px;
  flex-shrink: 0;
  z-index: 10;
}

.brand {
  font-weight: 700;
  font-size: 18px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.logo-mark {
  background: var(--accent);
  color: #fff;
  padding: 2px 8px;
  border-radius: 6px;
  font-size: 13px;
  transition: transform 0.4s var(--ease-bounce);
}
.brand:hover .logo-mark { transform: rotate(10deg) scale(1.1); }

/* Primary Button */
.btn-primary-action {
  background: var(--accent);
  color: #ffffff;
  border: none;
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.25s var(--ease-spring);
  box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
  text-align: center;
  width: 100%;
}
.btn-primary-action:hover {
  background: #4f46e5;
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.45);
}
.btn-primary-action:active { transform: translateY(0) scale(0.98); }

/* Mini Month Styles */
.mini-month {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 10px;
  padding: 10px;
}
.mini-month-header {
  font-size: 11px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-muted);
  text-align: center;
}
.mini-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 2px;
  text-align: center;
  font-size: 10px;
}
.mini-grid span { padding: 3px 0; color: var(--text-dark); }
.mini-grid .day-num {
  color: var(--text-muted);
  cursor: pointer;
  border-radius: 4px;
  transition: all 0.2s var(--ease-spring);
}
.mini-grid .day-num:hover {
  background: var(--bg-card-hover);
  color: var(--text-main);
  transform: scale(1.1);
}
.mini-grid .day-num.active {
  background: var(--accent);
  color: #ffffff;
  font-weight: 600;
}

.sidebar-section { display: flex; flex-direction: column; gap: 6px; }
.section-label { font-size: 10px; text-transform: uppercase; color: var(--text-dark); font-weight: 700; letter-spacing: 0.05em; }

.category-filters { display: flex; flex-direction: column; gap: 3px; }
.cat-btn {
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-muted);
  padding: 7px 10px;
  border-radius: 6px;
  text-align: left;
  cursor: pointer;
  font-size: 13px;
  transition: all 0.25s var(--ease-spring);
}
.cat-btn:hover { background: var(--bg-card); color: var(--text-main); transform: translateX(4px); }
.cat-btn.active { background: var(--accent-soft); color: var(--accent); border-color: rgba(99, 102, 241, 0.3); font-weight: 600; }

.tool-btn {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  color: var(--text-main);
  padding: 7px 10px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 12px;
  text-align: left;
  transition: all 0.25s var(--ease-spring);
}
.tool-btn:hover { border-color: var(--border-strong); background: var(--bg-card-hover); transform: translateY(-1px); }
.tool-btn.danger:hover { color: var(--rose); border-color: rgba(244, 63, 94, 0.4); }

.main { flex: 1; display: flex; flex-direction: column; min-width: 0; }

.topbar {
  height: 64px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  padding: 0 24px;
  background: var(--bg-surface);
  gap: 16px;
}

.view-tabs { display: flex; background: var(--bg-card); padding: 3px; border-radius: 8px; border: 1px solid var(--border-subtle); }
.view-tab {
  padding: 6px 12px; border: none; background: transparent; color: var(--text-muted); font-size: 12px; font-weight: 600; cursor: pointer; border-radius: 6px;
  transition: all 0.25s var(--ease-spring);
}
.view-tab:hover { color: var(--text-main); }
.view-tab.active { background: var(--border-strong); color: var(--text-main); transform: scale(1.02); }

.opt-toggle {
  background: var(--bg-card); border: 1px solid var(--border-subtle); color: var(--text-muted);
  padding: 6px 12px; border-radius: 6px; font-size: 12px; font-weight: 600; cursor: pointer;
  transition: all 0.25s var(--ease-spring);
}
.opt-toggle:hover { color: var(--text-main); border-color: var(--border-strong); transform: translateY(-1px); }

.command-wrap { display: flex; flex-direction: column; gap: 4px; flex: 1; max-width: 440px; margin-left: auto; }
.command-input {
  width: 100%; padding: 8px 14px; background: var(--bg-card); border: 1px solid var(--border-subtle);
  border-radius: 8px; color: var(--text-main); outline: none; font-size: 13px;
  transition: all 0.3s var(--ease-spring);
}
.command-input:focus { border-color: var(--accent); box-shadow: 0 0 15px rgba(99, 102, 241, 0.25); transform: translateY(-1px); }

.parser-preview { display: flex; gap: 8px; font-size: 11px; color: var(--text-dark); align-items: center; }
.parser-chip { background: var(--accent-soft); color: var(--accent); padding: 2px 8px; border-radius: 4px; font-weight: 500; }

.main-content {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* Event Cards */
.event-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-left: 4px solid var(--accent);
  padding: 14px 18px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  animation: slideUp 0.4s var(--ease-spring) backwards;
  transition: all 0.3s var(--ease-spring);
}
.event-card:hover {
  border-color: var(--border-strong);
  transform: translateX(6px) scale(1.01);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}
.event-card.completed { opacity: 0.4; text-decoration: line-through; transform: scale(0.99); }

@keyframes slideUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

.event-details strong { display: block; font-size: 14px; margin-bottom: 2px; }
.event-details span { font-size: 12px; color: var(--text-muted); }
.event-tag { background: var(--border-subtle); font-size: 10px; padding: 2px 6px; border-radius: 4px; margin-left: 8px; color: var(--text-main); }

.event-actions { display: flex; align-items: center; gap: 14px; }
.del-btn {
  background: none; border: none; color: var(--text-dark); cursor: pointer; font-size: 16px;
  transition: transform 0.2s var(--ease-bounce), color 0.2s;
}
.del-btn:hover { color: var(--rose); transform: scale(1.3) rotate(90deg); }

/* Modal Overlay & Card with Heavy Motion */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 500;
  opacity: 1;
  transition: opacity 0.3s var(--ease-spring);
}
.modal-overlay.hidden { opacity: 0; pointer-events: none; }

.modal-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-strong);
  width: 100%;
  max-width: 420px;
  border-radius: 12px;
  padding: 24px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6);
  transform: scale(1) translateY(0);
  transition: transform 0.35s var(--ease-bounce);
}
.modal-overlay.hidden .modal-card { transform: scale(0.92) translateY(15px); }

.modal-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }
.modal-header h3 { font-size: 16px; font-weight: 700; }
.close-btn { background: none; border: none; color: var(--text-muted); font-size: 16px; cursor: pointer; }
.close-btn:hover { color: var(--text-main); }

.form-group { display: flex; flex-direction: column; gap: 6px; margin-bottom: 16px; }
.form-group label { font-size: 11px; font-weight: 600; color: var(--text-muted); text-transform: uppercase; }
.form-group input, .form-group select {
  padding: 10px 12px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  color: var(--text-main);
  outline: none;
  font-size: 13px;
  transition: all 0.2s;
}
.form-group input:focus, .form-group select:focus { border-color: var(--accent); }
.form-row { display: flex; gap: 12px; }
.form-row .form-group { flex: 1; }

.modal-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 20px; }

/* Toast Notifications */
#toast-container { position: fixed; bottom: 24px; right: 24px; display: flex; flex-direction: column; gap: 8px; z-index: 1000; }
.toast {
  background: var(--bg-card); border: 1px solid var(--border-strong); color: var(--text-main);
  padding: 10px 18px; border-radius: 8px; font-size: 13px; box-shadow: 0 10px 30px rgba(0,0,0,0.5);
  animation: toastIn 0.35s var(--ease-bounce) forwards;
}
@keyframes toastIn {
  from { opacity: 0; transform: translateY(20px) scale(0.9); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}