/* ============================================================
   responsive.css — Fully Responsive Layouts for Mobile, Tablet & Desktop
   ============================================================ */

/* ── Tablet: 768px – 1023px ──────────────────────────────────── */
@media (max-width: 1023px) and (min-width: 768px) {
  :root {
    --sidebar-w: 70px;
    --page-pad: 20px;
  }

  .sidebar {
    width: var(--sidebar-w) !important;
    align-items: center !important;
    display: flex !important;
  }

  .sidebar-logo {
    padding: 20px 10px;
    justify-content: center;
  }
  .logo-text { display: none !important; }
  .logo-icon { font-size: 26px; }

  .sidebar-nav { padding: 12px 8px; }

  .nav-item {
    justify-content: center;
    padding: 12px 8px;
    gap: 0;
  }
  .nav-label { display: none !important; }
  .nav-icon { width: auto; font-size: 22px; }

  .nav-item.active::before { display: none !important; }
  .nav-item.active { border-radius: var(--radius-sm); }

  .sidebar-footer {
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 12px 8px;
  }
  .user-info { display: none !important; }

  /* Main content tablet position */
  .main-content {
    margin-left: var(--sidebar-w) !important;
    width: calc(100% - var(--sidebar-w)) !important;
    padding-top: 0 !important;
  }

  .mobile-top-header { display: none !important; }
  .mobile-nav { display: none !important; }

  /* Tablet layout grids */
  .stats-row { grid-template-columns: repeat(2, minmax(0, 1fr)) !important; gap: 14px !important; }
  .charts-row { grid-template-columns: 1fr !important; gap: 16px !important; }
  .analytics-grid { grid-template-columns: 1fr !important; gap: 16px !important; }
  .stat-overview-grid { grid-template-columns: repeat(2, minmax(0, 1fr)) !important; gap: 14px !important; }
  .habits-grid { grid-template-columns: repeat(2, minmax(0, 1fr)) !important; gap: 16px !important; }
  .streaks-grid { grid-template-columns: repeat(2, minmax(0, 1fr)) !important; gap: 16px !important; }
  .achievements-grid { grid-template-columns: repeat(3, minmax(0, 1fr)) !important; gap: 14px !important; }
  .rewards-grid { grid-template-columns: repeat(2, minmax(0, 1fr)) !important; gap: 16px !important; }

  .greeting { font-size: 24px; }
}

/* ── Mobile: up to 767px ─────────────────────────────────────── */
@media (max-width: 767px) {
  :root {
    --page-pad: 14px;
    --mobile-nav-h: 64px;
  }

  /* App Shell & Sidebar */
  .app-shell {
    display: block !important;
    width: 100% !important;
    min-height: 100vh;
    overflow-x: hidden !important;
  }

  .sidebar { display: none !important; }

  /* Mobile Top Header (Fixed across full viewport width) */
  .mobile-top-header {
    display: flex !important;
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    width: 100vw !important;
    max-width: 100% !important;
    height: 60px !important;
    background: var(--surface) !important;
    border-bottom: 1px solid var(--border-2) !important;
    z-index: 500 !important;
    align-items: center !important;
    justify-content: space-between !important;
    padding: 0 16px !important;
    box-sizing: border-box !important;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.12);
  }

  .mobile-header-brand {
    display: flex;
    align-items: center;
    gap: 8px;
  }

  .mobile-header-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--text);
    letter-spacing: -0.02em;
  }

  .mobile-header-right {
    display: flex;
    align-items: center;
    gap: 10px;
  }

  /* Main Content Layout on Mobile */
  .main-content {
    margin-left: 0 !important;
    width: 100% !important;
    max-width: 100vw !important;
    padding: 0 !important;
    padding-top: 60px !important;
    padding-bottom: calc(var(--mobile-nav-h) + 16px) !important;
    box-sizing: border-box !important;
    overflow-x: hidden !important;
  }

  /* Page Padding & Container */
  .page {
    padding: 14px !important;
    padding-bottom: calc(var(--mobile-nav-h) + 20px) !important;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    overflow-x: hidden !important;
  }

  /* Mobile Bottom Nav (Fixed at bottom) */
  .mobile-nav {
    display: flex !important;
    position: fixed !important;
    bottom: 0 !important;
    left: 0 !important;
    right: 0 !important;
    width: 100vw !important;
    max-width: 100% !important;
    height: var(--mobile-nav-h) !important;
    background: var(--surface) !important;
    border-top: 1px solid var(--border-2) !important;
    z-index: 500 !important;
    align-items: center !important;
    justify-content: space-around !important;
    padding: 0 !important;
    padding-bottom: env(safe-area-inset-bottom, 0) !important;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.15) !important;
    box-sizing: border-box !important;
  }

  .mobile-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    width: 20%;
    padding: 6px 0;
    border-radius: var(--radius-sm);
    color: var(--text-3);
    font-size: 10px;
    font-weight: 600;
    transition: all var(--t);
    flex: 1;
    border: none;
    background: transparent;
    cursor: pointer;
    box-sizing: border-box;
  }
  .mobile-nav-item .nav-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    height: 22px;
    transition: transform var(--t-spring);
  }
  .mobile-nav-item .nav-icon svg {
    display: block;
    width: 20px;
    height: 20px;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
    fill: none;
    transition: transform var(--t-spring), stroke var(--t), filter var(--t);
  }
  .mobile-nav-item .nav-label { font-size: 10px; font-weight: 600; letter-spacing: 0.2px; }
  
  .mobile-nav-item.active {
    color: var(--accent);
    font-weight: 700;
  }
  .mobile-nav-item.active .nav-icon svg {
    stroke: var(--text);
    stroke-width: 2.2;
    transform: scale(1.08);
  }

  .mobile-nav-add {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--text);
    color: var(--bg);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.2);
    transform: translateY(-6px);
    border: 3px solid var(--surface);
    flex-shrink: 0;
    margin: 0 auto;
    padding: 0;
    cursor: pointer;
  }
  .mobile-nav-add svg {
    display: block;
    width: 20px;
    height: 20px;
    stroke: var(--bg);
    stroke-width: 2.5;
  }

  /* Page Header Layout */
  .page-header {
    flex-direction: column !important;
    align-items: flex-start !important;
    gap: 8px !important;
    margin-bottom: 14px !important;
  }
  .page-header .btn-checkin {
    width: auto !important;
    max-width: 100% !important;
    padding: 7px 14px !important;
    font-size: 13px !important;
  }

  .date-display {
    font-size: 11.5px !important;
    margin-bottom: 2px !important;
    letter-spacing: 0.8px !important;
  }
  .greeting {
    font-size: 23px !important;
    letter-spacing: -0.4px !important;
    line-height: 1.2 !important;
    margin-bottom: 2px !important;
  }
  .daily-quote {
    font-size: 12.5px !important;
    margin-top: 2px !important;
    margin-bottom: 6px !important;
    line-height: 1.4 !important;
  }

  /* Dashboard Stats Grid on Mobile — Minimal, Compact & Breathable */
  .stats-row {
    grid-template-columns: repeat(2, minmax(0, 1fr)) !important;
    gap: 10px !important;
    margin-bottom: 14px !important;
  }

  .stats-row .card {
    padding: 12px 14px !important;
    border-radius: 18px !important;
    border: 1px solid var(--border) !important;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.03) !important;
    min-height: unset !important;
  }

  /* 1. Score Card */
  .score-card {
    flex-direction: column !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 4px !important;
    padding: 12px 10px !important;
  }
  .score-ring-wrap {
    width: 52px !important;
    height: 52px !important;
  }
  .score-number {
    font-size: 18px !important;
    font-weight: 800 !important;
  }
  .score-label {
    font-size: 10px !important;
    font-weight: 700 !important;
    letter-spacing: 0.5px !important;
    margin-top: 2px !important;
    line-height: 1.2 !important;
  }

  /* 2. Progress Card */
  .progress-card {
    padding: 12px 12px !important;
    gap: 4px !important;
    justify-content: center !important;
  }
  .progress-card .card-label {
    font-size: 10px !important;
    font-weight: 700 !important;
    letter-spacing: 0.5px !important;
    color: var(--text-3) !important;
    text-transform: uppercase !important;
  }
  .progress-fraction {
    font-size: 22px !important;
    font-weight: 800 !important;
    line-height: 1 !important;
  }
  .progress-fraction .total {
    font-size: 15px !important;
  }
  .progress-bar-wrap {
    height: 5px !important;
    margin: 4px 0 !important;
  }
  .progress-pct {
    font-size: 12px !important;
    font-weight: 700 !important;
  }
  .progress-remaining {
    font-size: 11px !important;
    color: var(--text-3) !important;
    white-space: nowrap !important;
    overflow: hidden !important;
    text-overflow: ellipsis !important;
  }

  /* 3. Streak Card */
  .streak-card {
    padding: 12px 10px !important;
    gap: 2px !important;
    align-items: center !important;
    justify-content: center !important;
  }
  .streak-fire {
    font-size: 22px !important;
    margin-bottom: 0 !important;
  }
  .streak-number {
    font-size: 22px !important;
    font-weight: 800 !important;
    line-height: 1 !important;
  }
  .streak-label {
    font-size: 10px !important;
    font-weight: 700 !important;
    letter-spacing: 0.5px !important;
    margin-top: 2px !important;
  }
  .streak-best {
    font-size: 10.5px !important;
    color: var(--text-3) !important;
  }

  /* 4. XP Card */
  .xp-card {
    padding: 12px 12px !important;
    gap: 3px !important;
    justify-content: center !important;
  }
  .xp-card .xp-icon {
    font-size: 20px !important;
    margin-bottom: 0 !important;
  }
  .xp-number {
    font-size: 22px !important;
    font-weight: 800 !important;
    line-height: 1 !important;
  }
  .xp-card .xp-label {
    font-size: 10px !important;
    font-weight: 700 !important;
    letter-spacing: 0.5px !important;
    text-transform: uppercase !important;
    color: var(--text-3) !important;
  }
  .level-badge {
    font-size: 10.5px !important;
    padding: 2px 7px !important;
    margin: 2px 0 !important;
    align-self: flex-start !important;
  }
  .level-bar-wrap {
    height: 4px !important;
    margin: 2px 0 !important;
  }
  .level-xp-info {
    font-size: 10.5px !important;
    color: var(--text-3) !important;
  }

  /* Today's Habits Card on Mobile */
  .habits-card {
    padding: 16px 14px !important;
    border-radius: 20px !important;
    border: 1px solid var(--border) !important;
  }
  .habits-card .card-header {
    margin-bottom: 12px !important;
  }
  .habits-card .card-header h2 {
    font-size: 16px !important;
    font-weight: 700 !important;
  }
  .habits-card .card-header .btn-primary {
    padding: 6px 14px !important;
    font-size: 12px !important;
    border-radius: var(--radius-pill) !important;
  }

  /* Today's Tasks Card on Mobile */
  .tasks-card {
    padding: 16px 14px !important;
    border-radius: 20px !important;
    border: 1px solid var(--border) !important;
  }
  .tasks-card .card-header {
    margin-bottom: 12px !important;
  }
  .tasks-card .card-header h2 {
    font-size: 16px !important;
    font-weight: 700 !important;
  }
  .task-item {
    padding: 10px 12px !important;
    gap: 10px !important;
    border-radius: 14px !important;
  }
  .day-detail-modal {
    width: 94% !important;
    max-width: 94% !important;
  }
  .habit-item {
    padding: 11px 13px !important;
    gap: 10px !important;
    border-radius: 14px !important;
  }
  .habit-item-icon {
    font-size: 18px !important;
    width: 22px !important;
  }
  .habit-item-name {
    font-size: 14px !important;
    font-weight: 600 !important;
  }
  .habit-item-meta {
    font-size: 11px !important;
    gap: 6px !important;
  }
  .habit-check-btn {
    width: 26px !important;
    height: 26px !important;
    font-size: 12px !important;
  }
  .habit-item.completed {
    background: rgba(34, 197, 94, 0.05) !important;
    border-color: rgba(34, 197, 94, 0.25) !important;
  }

  /* Charts */
  .charts-row { grid-template-columns: 1fr !important; gap: 14px !important; }

  /* Habits Page Grid */
  .habits-grid {
    grid-template-columns: 1fr !important;
    gap: 14px !important;
  }

  .filter-tabs {
    overflow-x: auto !important;
    flex-wrap: nowrap !important;
    padding-bottom: 6px !important;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    width: 100% !important;
    max-width: 100% !important;
  }
  .filter-tabs::-webkit-scrollbar { display: none; }
  .filter-tab { flex-shrink: 0 !important; font-size: 13px !important; padding: 8px 14px !important; }

  /* Analytics Page Grids */
  .analytics-grid { grid-template-columns: 1fr !important; gap: 14px !important; }
  .stat-overview-grid { grid-template-columns: repeat(2, minmax(0, 1fr)) !important; gap: 10px !important; }

  /* Calendar Page */
  .calendar-wrapper, .matrix-wrapper {
    overflow-x: auto !important;
    -webkit-overflow-scrolling: touch;
    width: 100% !important;
    max-width: 100% !important;
  }
  .matrix-table { min-width: 540px !important; }

  /* Achievements & Rewards */
  .achievements-grid { grid-template-columns: repeat(2, minmax(0, 1fr)) !important; gap: 10px !important; }
  .rewards-grid { grid-template-columns: 1fr !important; gap: 14px !important; }

  /* Streaks Page */
  .streaks-grid { grid-template-columns: 1fr !important; gap: 12px !important; }
  .heatmap-card {
    padding: 16px 14px !important;
    border-radius: var(--radius-sm) !important;
  }
  .heatmap-header {
    flex-direction: column !important;
    align-items: flex-start !important;
    gap: 10px !important;
  }
  .heatmap-title-group {
    width: 100% !important;
  }
  .heatmap-subtitle {
    font-size: 11.5px !important;
    flex-wrap: wrap !important;
  }
  .heatmap-legend {
    align-self: flex-start !important;
  }
  .heatmap-scroll-container {
    width: 100% !important;
    -webkit-overflow-scrolling: touch !important;
    overscroll-behavior-x: contain !important;
  }
  .heatmap-matrix-wrapper {
    min-width: 840px !important;
  }

  /* Onboarding */
  .onboarding-card { padding: 24px 18px !important; }
  .onboarding-step h1 { font-size: 20px !important; }
  .goal-grid { grid-template-columns: 1fr !important; }

  /* Toast position on mobile */
  #toast-container {
    right: 12px !important;
    left: 12px !important;
    bottom: calc(var(--mobile-nav-h) + 14px) !important;
  }
  .toast { max-width: 100% !important; }

  /* Modals on Mobile */
  .modal {
    border-radius: var(--radius-lg) var(--radius-lg) 0 0 !important;
    max-height: 90vh !important;
  }
  .modal-overlay {
    align-items: flex-end !important;
    padding: 0 !important;
  }

  /* Danger Zone on Mobile */
  .danger-zone-body {
    flex-direction: column !important;
    align-items: stretch !important;
  }
  .btn-danger-outline {
    width: 100% !important;
    justify-content: center !important;
  }

  /* Minimal Settings on Mobile */
  .settings-container { gap: 16px !important; }
  .settings-item {
    padding: 12px 14px !important;
    gap: 10px !important;
  }
  .settings-item-profile {
    padding: 12px 14px !important;
  }
  .settings-profile-avatar {
    width: 38px !important;
    height: 38px !important;
    font-size: 16px !important;
  }
  .settings-item-danger-zone {
    flex-direction: column !important;
    align-items: stretch !important;
    gap: 12px !important;
  }
  .btn-danger-outline-sm {
    width: 100% !important;
    justify-content: center !important;
    padding: 9px 16px !important;
  }
}

/* ── Very small screens: 375px and under ─────────────────────── */
@media (max-width: 375px) {
  .stats-row { grid-template-columns: 1fr !important; }
  .stat-overview-grid { grid-template-columns: 1fr !important; }
  .achievements-grid { grid-template-columns: 1fr !important; }
  .rewards-grid { grid-template-columns: 1fr !important; }
}

/* ── Large screens: 1440px+ ──────────────────────────────────── */
@media (min-width: 1440px) {
  .stats-row { grid-template-columns: repeat(4, 1fr); }
  .page { max-width: 1300px; }
  .habits-grid { grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); }
  .analytics-grid { grid-template-columns: 1fr 1fr; }
}

/* ── Print ───────────────────────────────────────────────────── */
@media print {
  .sidebar, .mobile-top-header, .mobile-nav, #toast-container, #confetti-canvas, #xp-float-container { display: none !important; }
  .main-content { margin-left: 0 !important; padding: 0 !important; }
}