:root {
  --bg-dark: #080810;
  --surface-dark: #111120;
  --surface-soft: #171727;
  --border-dark: #1e1e2e;
  --text-main: #ffffff;
  --text-muted: #a7a7bd;
  --accent-cyan: #00f5ff;
  --success-green: #00ff88;
  --warning-amber: #f5a623;
  --danger-red: #ff3860;
  --neon-purple: #9b5cff;
}

* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  margin: 0;
  background:
    radial-gradient(
      circle at top left,
      rgba(0, 245, 255, 0.12),
      transparent 30%
    ),
    radial-gradient(
      circle at bottom right,
      rgba(155, 92, 255, 0.12),
      transparent 30%
    ),
    var(--bg-dark);
  color: var(--text-main);
  font-family: "Karla", sans-serif;
}

h1,
h2,
h3,
.brand-title {
  font-family: "Unbounded", sans-serif;
}

button,
input,
select {
  font: inherit;
}

button:focus-visible,
input:focus-visible,
select:focus-visible {
  outline: 3px solid var(--accent-cyan);
  outline-offset: 3px;
}

.auth-page {
  display: grid;
  min-height: 100vh;
  padding: 24px;
  place-items: center;
}

.auth-card {
  width: 100%;
  max-width: 430px;
  border: 1px solid rgba(0, 245, 255, 0.25);
  border-radius: 24px;
  background: rgba(17, 17, 32, 0.92);
  padding: 28px;
  box-shadow: 0 0 40px rgba(0, 245, 255, 0.08);
}

.auth-badge {
  display: inline-block;
  margin-bottom: 16px;
  border: 1px solid rgba(0, 245, 255, 0.35);
  border-radius: 999px;
  color: var(--accent-cyan);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 7px 12px;
  text-transform: uppercase;
}

.auth-card h1 {
  margin: 0 0 8px;
  font-size: 2rem;
  font-weight: 800;
}

.auth-card p,
.muted-text {
  color: var(--text-muted);
}

.form-field {
  display: grid;
  gap: 8px;
  margin-bottom: 14px;
  color: var(--text-main);
  font-weight: 700;
}

input,
select {
  width: 100%;
  border: 1px solid var(--border-dark);
  border-radius: 12px;
  background: #0c0c18;
  color: var(--text-main);
  padding: 11px 12px;
}

input::placeholder {
  color: #6e6e85;
}

.form-error {
  min-height: 20px;
  color: var(--danger-red);
  font-size: 0.85rem;
}

.btn-neon,
.secondary-btn,
.danger-btn {
  border-radius: 12px;
  cursor: pointer;
  font-weight: 800;
  padding: 11px 14px;
}

.btn-neon {
  border: 0;
  background: var(--accent-cyan);
  color: #020207;
  box-shadow: 0 0 18px rgba(0, 245, 255, 0.35);
}

.btn-neon:hover {
  background: #8affff;
}

.secondary-btn {
  border: 1px solid var(--border-dark);
  background: transparent;
  color: var(--text-main);
}

.danger-btn {
  border: 1px solid var(--danger-red);
  background: transparent;
  color: var(--danger-red);
}

.small-btn {
  padding: 8px 10px;
  font-size: 0.86rem;
}

.full-width {
  width: 100%;
}

.auth-switch {
  margin-top: 18px;
  color: var(--text-muted);
  text-align: center;
}

.auth-switch button {
  border: 0;
  background: transparent;
  color: var(--accent-cyan);
  cursor: pointer;
  font-weight: 800;
}

.dashboard-shell {
  min-height: 100vh;
  padding: 20px;
}

.app-header {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 24px;
  border: 1px solid var(--border-dark);
  border-radius: 24px;
  background: rgba(17, 17, 32, 0.86);
  padding: 18px;
}

.brand-title {
  margin: 0;
  font-size: 1.8rem;
  font-weight: 800;
}

.user-email {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.date-card,
.stat-card,
.habit-card,
.weekly-panel,
.empty-state {
  border: 1px solid var(--border-dark);
  border-radius: 22px;
  background: rgba(17, 17, 32, 0.9);
}

.date-card {
  margin-bottom: 22px;
  padding: 22px;
}

.date-card span {
  color: var(--accent-cyan);
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.date-card h2 {
  margin: 8px 0 0;
}

.stats-grid,
.habit-grid {
  display: grid;
  gap: 16px;
}

.stats-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-bottom: 22px;
}

.habit-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.stat-card {
  padding: 18px;
}

.stat-card p {
  margin: 0;
  color: var(--text-muted);
}

.stat-card strong {
  display: block;
  margin-top: 6px;
  color: var(--accent-cyan);
  font-size: 1.8rem;
}

.habit-card {
  border-left: 5px solid var(--accent-cyan);
  padding: 18px;
  transition:
    transform 0.2s ease,
    box-shadow 0.2s ease;
}

.habit-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 0 26px rgba(0, 245, 255, 0.1);
}

.habit-top {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 18px;
}

.habit-emoji {
  display: inline-flex;
  margin-bottom: 8px;
  border: 1px solid var(--border-dark);
  border-radius: 999px;
  color: var(--accent-cyan);
  font-family: "Unbounded", sans-serif;
  font-size: 0.78rem;
  font-weight: 800;
  padding: 6px 9px;
}

.habit-name {
  margin: 0;
  font-size: 1.2rem;
  font-weight: 800;
}

.habit-frequency {
  color: var(--text-muted);
  font-size: 0.85rem;
  text-transform: uppercase;
}

.complete-btn {
  width: 58px;
  height: 58px;
  border: 2px solid var(--success-green);
  border-radius: 50%;
  background: transparent;
  color: var(--success-green);
  cursor: pointer;
  font-weight: 900;
}

.complete-btn.completed {
  background: var(--success-green);
  color: #04100a;
  box-shadow: 0 0 22px rgba(0, 255, 136, 0.35);
}

.streak-badge {
  display: inline-flex;
  margin-bottom: 12px;
  border-radius: 999px;
  background: rgba(245, 166, 35, 0.12);
  color: var(--warning-amber);
  font-weight: 800;
  padding: 7px 11px;
}

.progress {
  height: 9px;
  overflow: hidden;
  border-radius: 999px;
  background: #262637;
}

.progress-bar {
  height: 100%;
  background: var(--accent-cyan);
}

.habit-actions {
  display: flex;
  gap: 10px;
  margin-top: 16px;
}

.weekly-panel {
  margin-top: 26px;
  padding: 20px;
}

.week-row {
  display: grid;
  grid-template-columns: 1.4fr repeat(7, 1fr);
  align-items: center;
  gap: 10px;
  border-bottom: 1px solid var(--border-dark);
  padding: 12px 0;
}

.week-row:last-child {
  border-bottom: 0;
}

.week-header {
  color: var(--text-muted);
}

.week-habit-name {
  font-weight: 800;
}

.center-text {
  text-align: center;
}

.week-dot {
  width: 16px;
  height: 16px;
  margin: auto;
  border: 2px solid #44445a;
  border-radius: 50%;
}

.week-dot.complete {
  border-color: var(--accent-cyan);
  background: var(--accent-cyan);
  box-shadow: 0 0 12px rgba(0, 245, 255, 0.45);
}

.empty-state {
  grid-column: 1 / -1;
  padding: 34px 20px;
  text-align: center;
}

.floating-add-btn {
  position: fixed;
  right: 22px;
  bottom: 22px;
  width: 62px;
  height: 62px;
  border: 0;
  border-radius: 50%;
  background: var(--accent-cyan);
  color: #020207;
  cursor: pointer;
  font-size: 2rem;
  font-weight: 900;
  box-shadow: 0 0 26px rgba(0, 245, 255, 0.45);
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: grid;
  background: rgba(0, 0, 0, 0.72);
  padding: 18px;
  place-items: center;
}

.modal-backdrop.hidden {
  display: none;
}

.status-toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  z-index: 60;
  transform: translateX(-50%);
  border-radius: 12px;
  padding: 12px 20px;
  font-weight: 700;
  font-size: 0.9rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  border: 1px solid transparent;
}

.status-toast.hidden {
  display: none;
}

.status-toast.success {
  background: rgba(0, 255, 136, 0.12);
  border-color: var(--success-green);
  color: var(--success-green);
}

.status-toast.error {
  background: rgba(255, 56, 96, 0.12);
  border-color: var(--danger-red);
  color: var(--danger-red);
}

.habit-modal-content {
  width: min(520px, 100%);
  border: 1px solid rgba(0, 245, 255, 0.25);
  border-radius: 22px;
  background: var(--surface-dark);
  color: var(--text-main);
  padding: 20px;
}

.modal-header,
.modal-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.modal-footer {
  justify-content: flex-end;
  margin-top: 10px;
}

.icon-btn {
  border: 1px solid var(--border-dark);
  border-radius: 10px;
  background: transparent;
  color: var(--text-main);
  cursor: pointer;
  padding: 8px 10px;
}

.emoji-picker {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.emoji-option {
  border: 1px solid var(--border-dark);
  border-radius: 14px;
  background: #0c0c18;
  color: var(--text-main);
  cursor: pointer;
  font-weight: 800;
  padding: 10px;
}

.emoji-option.active {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  box-shadow: 0 0 14px rgba(0, 245, 255, 0.25);
}

@media (min-width: 768px) {
  .dashboard-shell {
    padding: 32px;
  }

  .app-header {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

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

  .week-row {
    grid-template-columns: 1fr repeat(7, minmax(28px, 1fr));
    overflow-x: auto;
  }
}