/* ═══════════════════════════════════════════════
   Goal Tracker — Stylesheet
   Theme: clean, motivating, low-friction
═══════════════════════════════════════════════ */

/* ── Custom Properties ── */
:root {
  --bg:          #0f1117;
  --bg-card:     #1a1d27;
  --bg-elevated: #222534;
  --border:      #2e3148;
  --accent:      #6c63ff;
  --accent-soft: #4f46b3;
  --green:       #22c55e;
  --red:         #ef4444;
  --heart:       #f43f5e;
  --text:        #e8eaf2;
  --text-muted:  #8b8fa8;
  --text-faint:  #4a4e68;
  --radius:      12px;
  --radius-sm:   7px;
  --shadow:      0 4px 24px rgba(0,0,0,.45);
  --transition:  .18s ease;
  --safe-bottom: env(safe-area-inset-bottom, 0px);
}

/* ── Reset / Base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* Ensure the hidden attribute always wins over any display: flex/block in CSS */
[hidden] { display: none !important; }

html { font-size: 16px; -webkit-text-size-adjust: 100%; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100dvh;
  overflow-x: hidden;
}

a { color: var(--accent); }

/* ── Utilities ── */
.screen { min-height: 100dvh; }
.mobile-only  { display: none; }
.desktop-only { display: block; }

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .4rem;
  border: none;
  border-radius: var(--radius-sm);
  font-size: .9rem;
  font-weight: 600;
  cursor: pointer;
  padding: .55rem 1.1rem;
  transition: background var(--transition), opacity var(--transition), transform var(--transition);
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}
.btn:active { transform: scale(.96); }
.btn-primary  { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-soft); }
.btn-outline  { background: transparent; color: var(--text); border: 1.5px solid var(--border); }
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }
.btn-ghost    { background: transparent; color: var(--text-muted); }
.btn-ghost:hover { color: var(--text); }
.btn-danger   { background: var(--red); color: #fff; }
.btn-danger:hover { opacity: .85; }
.btn-sm       { padding: .35rem .75rem; font-size: .8rem; }

.error-msg { color: var(--red); font-size: .85rem; margin-top: .5rem; }

/* ════════════════════════════════════════
   AUTH SCREEN
════════════════════════════════════════ */
#auth-screen {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  background: radial-gradient(ellipse at 50% 0%, #1d1f35 0%, var(--bg) 70%);
}

.auth-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 2.5rem 2rem;
  width: 100%;
  max-width: 380px;
  text-align: center;
}

.auth-logo {
  font-size: 3rem;
  margin-bottom: .75rem;
  filter: drop-shadow(0 0 14px rgba(108,99,255,.5));
}

#auth-title {
  font-size: 1.7rem;
  font-weight: 700;
  letter-spacing: -.02em;
  margin-bottom: .25rem;
}

#auth-tagline {
  color: var(--text-muted);
  font-size: .9rem;
  margin-bottom: 1.75rem;
}

#auth-form { display: flex; flex-direction: column; gap: .6rem; text-align: left; }

#auth-form label { font-size: .82rem; font-weight: 600; color: var(--text-muted); }

#auth-form input {
  background: var(--bg-elevated);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 1rem;
  padding: .65rem .9rem;
  width: 100%;
  outline: none;
  transition: border-color var(--transition);
}
#auth-form input:focus { border-color: var(--accent); }

#auth-form .btn-primary { margin-top: .5rem; width: 100%; padding: .75rem; font-size: 1rem; }

/* ════════════════════════════════════════
   TOP BAR
════════════════════════════════════════ */
.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .75rem 1.25rem;
  background: rgba(15,17,23,.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.topbar-left { display: flex; align-items: center; gap: .5rem; }
.topbar-logo { font-size: 1.3rem; }
.topbar-title { font-size: 1.05rem; font-weight: 700; letter-spacing: -.01em; }
.topbar-right { display: flex; align-items: center; gap: .75rem; }
.topbar-user { font-size: .8rem; color: var(--text-muted); max-width: 140px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ════════════════════════════════════════
   CALENDAR VIEW (desktop)
════════════════════════════════════════ */
.calendar-view { padding: 1.5rem 2rem 4rem; }

.calendar-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: .5rem;
  margin-bottom: 1.5rem;
}
.calendar-header h2 { font-size: 1.3rem; font-weight: 700; }
.calendar-legend { display: flex; gap: 1rem; font-size: .82rem; color: var(--text-muted); }
.legend-done, .legend-heart, .legend-note { display: flex; align-items: center; gap: .25rem; }

/* 3-column grid of month blocks */
.calendar-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.month-block {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.month-title {
  background: var(--bg-elevated);
  padding: .55rem 1rem;
  font-size: .85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
}

.month-table {
  width: 100%;
  border-collapse: collapse;
  font-size: .82rem;
}

.month-table thead th {
  padding: .4rem .3rem;
  text-align: center;
  color: var(--text-faint);
  font-weight: 600;
  font-size: .72rem;
  letter-spacing: .04em;
}

.month-table tbody td {
  padding: .4rem .3rem;
  text-align: center;
  border-top: 1px solid var(--border);
  cursor: pointer;
  transition: background var(--transition);
  position: relative;
  min-width: 36px;
}
.month-table tbody td:hover { background: var(--bg-elevated); }
.month-table tbody td.empty { cursor: default; }
.month-table tbody td.today { outline: 2px solid var(--accent); outline-offset: -2px; border-radius: 4px; }

.day-num {
  display: block;
  font-size: .78rem;
  color: var(--text-muted);
  margin-bottom: 2px;
}

.day-indicators {
  display: flex;
  justify-content: center;
  gap: 2px;
  font-size: .72rem;
  min-height: 16px;
}

/* ════════════════════════════════════════
   FEED VIEW (mobile)
════════════════════════════════════════ */
.feed-view {
  display: flex;
  flex-direction: column;
  height: calc(100dvh - 56px); /* minus topbar */
}

/* Month jump pills */
.month-jump-bar {
  display: flex;
  gap: .4rem;
  padding: .6rem .8rem;
  overflow-x: auto;
  scrollbar-width: none;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.month-jump-bar::-webkit-scrollbar { display: none; }

.month-pill {
  flex-shrink: 0;
  background: var(--bg-elevated);
  border: 1.5px solid var(--border);
  border-radius: 999px;
  color: var(--text-muted);
  font-size: .78rem;
  font-weight: 600;
  padding: .3rem .75rem;
  cursor: pointer;
  transition: all var(--transition);
  -webkit-tap-highlight-color: transparent;
}
.month-pill.active,
.month-pill:active { background: var(--accent); border-color: var(--accent); color: #fff; }

.feed-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .5rem .8rem;
  flex-shrink: 0;
}
.scroll-hint { font-size: .75rem; color: var(--text-faint); }

/* Scrollable day cards */
.feed-list {
  flex: 1;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: .5rem .75rem calc(1.5rem + var(--safe-bottom));
  scroll-behavior: smooth;
}

/* Month separator inside feed */
.feed-month-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(15,17,23,.92);
  backdrop-filter: blur(8px);
  padding: .5rem 0 .3rem;
  font-size: .85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .07em;
  color: var(--accent);
  border-bottom: 1px solid var(--border);
  margin-bottom: .4rem;
}

/* Day card */
.day-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: .75rem .9rem;
  margin-bottom: .55rem;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: .75rem;
  cursor: pointer;
  transition: border-color var(--transition), background var(--transition);
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}
.day-card:active, .day-card:hover { border-color: var(--accent); background: var(--bg-elevated); }
.day-card.today    { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }
.day-card.has-done { border-left: 3px solid var(--green); }
.day-card.has-heart{ border-left: 3px solid var(--heart); }
.day-card.has-done.has-heart { border-left: 3px solid var(--accent); }

.day-card-date {
  text-align: center;
  min-width: 40px;
}
.day-card-date .dc-num {
  display: block;
  font-size: 1.35rem;
  font-weight: 800;
  line-height: 1;
  color: var(--text);
}
.day-card-date .dc-dow {
  display: block;
  font-size: .68rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: .05em;
}

.day-card-body { min-width: 0; }
.day-card-body .dc-month {
  font-size: .72rem;
  color: var(--text-faint);
  margin-bottom: 2px;
}
.day-card-body .dc-note {
  font-size: .85rem;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.day-card-body .dc-note.empty { color: var(--text-faint); font-style: italic; }

.day-card-icons {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 2px;
  font-size: 1.1rem;
}

/* View toggle (mobile only) */
.view-toggle {
  display: none;
  gap: 0;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
}
.toggle-btn {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: .85rem;
  font-weight: 600;
  padding: .6rem;
  cursor: pointer;
  transition: all var(--transition);
  -webkit-tap-highlight-color: transparent;
}
.toggle-btn.active { color: var(--accent); border-bottom: 2px solid var(--accent); }

/* ════════════════════════════════════════
   DAY MODAL
════════════════════════════════════════ */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(0,0,0,.7);
  display: flex;
  align-items: flex-end; /* sheet from bottom on mobile */
  justify-content: center;
  padding: 0;
  backdrop-filter: blur(4px);
}

.modal-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius) var(--radius) 0 0;
  width: 100%;
  max-width: 520px;
  padding: 1.25rem 1.25rem calc(1.25rem + var(--safe-bottom));
  animation: slideUp .22s ease;
}

@keyframes slideUp {
  from { transform: translateY(30px); opacity: 0; }
  to   { transform: translateY(0);    opacity: 1; }
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}
.modal-header h3 { font-size: 1.1rem; font-weight: 700; }
.modal-close {
  background: var(--bg-elevated);
  border: none;
  color: var(--text-muted);
  font-size: 1rem;
  width: 32px; height: 32px;
  border-radius: 50%;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: background var(--transition);
}
.modal-close:hover { background: var(--border); }

.toggle-row {
  display: flex;
  gap: .75rem;
  margin-bottom: 1rem;
}

.big-toggle {
  flex: 1;
  background: var(--bg-elevated);
  border: 2px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-size: 1rem;
  font-weight: 600;
  padding: .75rem;
  cursor: pointer;
  transition: all var(--transition);
  -webkit-tap-highlight-color: transparent;
}
.big-toggle[data-active="true"] {
  border-color: var(--accent);
  background: rgba(108,99,255,.15);
  color: var(--text);
}
#modal-done-btn[data-active="true"]  { border-color: var(--green);  background: rgba(34,197,94,.12); }
#modal-heart-btn[data-active="true"] { border-color: var(--heart);  background: rgba(244,63,94,.12); }

.modal-body label { display: block; font-size: .82rem; font-weight: 600; color: var(--text-muted); margin-bottom: .35rem; }

.modal-body textarea {
  width: 100%;
  background: var(--bg-elevated);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: .95rem;
  padding: .65rem .9rem;
  resize: vertical;
  outline: none;
  transition: border-color var(--transition);
  font-family: inherit;
  line-height: 1.5;
}
.modal-body textarea:focus { border-color: var(--accent); }

.modal-actions {
  display: flex;
  gap: .75rem;
  margin-top: .85rem;
  align-items: center;
}
.modal-actions .btn-primary { flex: 1; }

.modal-status {
  font-size: .82rem;
  color: var(--green);
  text-align: center;
  margin-top: .5rem;
}

/* ════════════════════════════════════════
   LOADING / EMPTY STATES
════════════════════════════════════════ */
.loading-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: .75rem;
  padding: 3rem;
  color: var(--text-muted);
  font-size: .9rem;
}
.spinner {
  width: 28px; height: 28px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin .7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ════════════════════════════════════════
   RESPONSIVE
════════════════════════════════════════ */
@media (max-width: 900px) {
  .calendar-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ════════════════════════════════════════
   JULY MILESTONE STYLES
════════════════════════════════════════ */
.month-title.july-month {
  background: linear-gradient(90deg, #1a2a1a, var(--bg-elevated));
  color: #4ade80;
  border-bottom-color: #166534;
}

.feed-month-header.july-header {
  color: #4ade80;
  border-bottom-color: #166534;
}

.month-pill.july-pill {
  border-color: #166534;
  color: #4ade80;
}
.month-pill.july-pill.active {
  background: #166534;
  border-color: #166534;
  color: #fff;
}

/* ════════════════════════════════════════
   AUTH — start date field
════════════════════════════════════════ */
.label-hint {
  font-size: .75rem;
  color: var(--text-faint);
  font-weight: 400;
  margin-left: .25rem;
}

/* ════════════════════════════════════════
   RESPONSIVE
════════════════════════════════════════ */
@media (max-width: 640px) {
  .mobile-only  { display: flex; }
  .desktop-only { display: none; }

  .calendar-view { padding: 1rem .75rem 3rem; }
  .calendar-grid { grid-template-columns: 1fr; }

  .topbar { padding: .6rem .9rem; }
  .topbar-title { font-size: .95rem; }

  .modal-overlay { align-items: flex-end; }
  .modal-card { max-width: 100%; border-radius: var(--radius) var(--radius) 0 0; }

  /* Feed is the default view on mobile; calendar hidden until toggled */
  #calendar-view { display: none; }
  #feed-view     { display: flex; }
}

@media (min-width: 641px) {
  #calendar-view { display: block !important; }
  #feed-view     { display: none !important; }
  .view-toggle   { display: none !important; }

  .modal-overlay { align-items: center; }
  .modal-card    { border-radius: var(--radius); }
}