/* ==========================================================================
   MOBILE SWEEP & RESPONSIVE OVERRIDES
   Full mobile-first polish for phones (< 480px) and tablets (< 768px)
   ========================================================================== */

/* ── App Loading Indicator ─────────────────────────────────────────────── */
.app-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  min-height: 60vh;
  color: var(--text-tertiary);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  animation: fadeIn 0.3s ease;
}

.loading-logo {
  animation: loadingPulse 1.5s ease-in-out infinite;
}

@keyframes loadingPulse {
  0%, 100% { transform: scale(1); opacity: 0.8; }
  50% { transform: scale(1.1); opacity: 1; }
}

/* ── Mobile Nav Drawer ─────────────────────────────────────────────────── */
.mobile-menu-btn {
  display: none; /* hidden on desktop */
}

.mobile-nav-drawer {
  position: absolute;
  top: 100%;
  right: 0;
  width: min(280px, 90vw);
  background: var(--surface-base);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  z-index: 200;
  padding: 0.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  animation: drawerSlideIn 0.18s cubic-bezier(0.16, 1, 0.3, 1);
  margin: 0.5rem 0.75rem 0;
}

.mobile-nav-drawer.hidden {
  display: none;
}

@keyframes drawerSlideIn {
  from { opacity: 0; transform: translateY(-8px) scale(0.97); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.mobile-nav-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.7rem 0.85rem;
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  text-align: left;
  width: 100%;
  transition: all 0.12s ease;
}

.mobile-nav-item:hover {
  background: var(--surface-elevated);
  color: var(--text-primary);
}

.mobile-nav-item svg {
  flex-shrink: 0;
  color: var(--text-tertiary);
}

.mobile-nav-separator {
  height: 1px;
  background: var(--border-subtle);
  margin: 0.25rem 0.85rem;
}

.mobile-nav-danger {
  color: #f87171;
}

.mobile-nav-danger:hover {
  background: rgba(239, 68, 68, 0.08);
  color: #ef4444;
}

/* ── App Header Position & Safe Area ──────────────────────────────────── */
.app-header {
  position: sticky;
  top: 0;
  z-index: 100;
  padding-top: max(0.4rem, env(safe-area-inset-top, 0.4rem));
  background: var(--surface-overlay);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

/* ── Viewport Containment: Smooth Mobile Sweep without Horizontal Drift ── */
html, body {
  width: 100%;
  max-width: 100vw;
  overflow-x: hidden;
  -webkit-text-size-adjust: 100%;
}

#main-app-container {
  width: 100%;
  max-width: 100%;
  overflow-x: hidden;
  box-sizing: border-box;
}

.dashboard-wrapper,
.novel-page-wrapper,
.advisor-page-wrapper,
.profile-page-wrapper,
.analytics-wrapper,
.study-planner-wrapper,
.cheatsheet-wrapper,
.question-browser-wrapper {
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  overflow-x: hidden;
}

/* ── Tablet (≤ 900px) ──────────────────────────────────────────────────── */
@media (max-width: 900px) {
  .mobile-menu-btn {
    display: flex;
  }

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

  .brand-sub {
    display: none;
  }

  .header-inner {
    padding: 0.65rem 1rem;
    min-height: 52px;
    align-items: center;
  }
}

/* ── Dashboard Mobile (≤ 768px) ────────────────────────────────────────── */
@media (max-width: 768px) {
  /* Wrapper */
  .dashboard-wrapper {
    padding: 1rem;
    gap: 1rem;
  }

  /* Profile hero */
  .profile-hero {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.25rem;
  }

  .profile-details {
    width: 100%;
  }

  .profile-actions {
    width: 100%;
    justify-content: space-between;
  }

  .avatar-ring {
    width: 48px;
    height: 48px;
    font-size: 1.3rem;
  }

  .student-name {
    font-size: 1.3rem !important;
  }

  /* Exam status bar */
  .exam-status-bar {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 1rem 1.25rem;
  }

  /* Metrics grid */
  .metrics-grid {
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
  }

  .metric-card {
    padding: 1rem;
  }

  .metric-value {
    font-size: 1.6rem !important;
  }

  /* JAMB/WAEC section headers */
  .section-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }

  /* Launcher cards */
  .launcher-cards-grid {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }

  .launcher-card {
    padding: 1.25rem;
  }

  /* Mastery list */
  .mastery-list-item {
    padding: 0.85rem 1rem;
  }

  /* History table - make it scroll horizontally */
  .history-table-wrap {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .history-table {
    min-width: 540px;
  }

  /* Profile title row wrap */
  .profile-title-row {
    flex-wrap: wrap;
    gap: 0.5rem;
  }

  /* Target score progress bar */
  .score-progress-wrap {
    flex-direction: column;
    gap: 0.5rem;
  }

  /* JAMB section grid */
  .dept-launcher-wrap {
    flex-direction: column;
  }
}

/* ── Phone (≤ 480px) ──────────────────────────────────────────────────── */
@media (max-width: 480px) {
  /* Base layout */
  .dashboard-wrapper {
    padding: 0.85rem;
    gap: 0.85rem;
  }

  /* Profile */
  .profile-hero {
    padding: 1rem;
  }

  .avatar-ring {
    width: 42px;
    height: 42px;
    font-size: 1.1rem;
  }

  .student-name {
    font-size: 1.15rem !important;
  }

  .dept-badge {
    font-size: 0.72rem !important;
    padding: 0.22rem 0.6rem !important;
  }

  /* Metrics 1 col on small phones */
  .metrics-grid {
    grid-template-columns: 1fr;
  }

  .metric-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.85rem 1rem;
  }

  .metric-icon {
    width: 36px;
    height: 36px;
    flex-shrink: 0;
  }

  .metric-value {
    font-size: 1.3rem !important;
  }

  .metric-label {
    font-size: 0.72rem;
  }

  /* Launcher cards */
  .launcher-card {
    padding: 1rem;
  }

  .launcher-card-title {
    font-size: 1rem;
  }

  /* Buttons */
  .btn-primary, .btn-secondary, .btn-outline {
    font-size: 0.83rem;
    padding: 0.55rem 0.9rem;
  }

  /* Section headings */
  .section-title {
    font-size: 1rem !important;
  }

  /* Novel bar */
  .novel-pill-btn {
    font-size: 0.8rem;
    padding: 0.5rem 0.75rem;
  }

  /* Streak pill */
  .streak-pill {
    padding: 0.4rem 0.65rem;
  }

  .streak-count {
    font-size: 0.9rem;
  }
}

/* ── CBT Exam Room Mobile ──────────────────────────────────────────────── */
@media (max-width: 768px) {
  /* CBT layout stacks vertically */
  .cbt-room-body {
    flex-direction: column;
  }

  .cbt-sidebar {
    width: 100%;
    border-left: none;
    border-top: 1px solid var(--border-subtle);
    max-height: 200px;
    overflow-y: auto;
  }

  .question-palette {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(36px, 1fr));
    gap: 0.3rem;
    padding: 0.75rem;
  }

  .cbt-main-pane {
    padding: 1rem;
    min-height: auto;
  }

  .cbt-top-bar {
    padding: 0.5rem 0.75rem;
    gap: 0.5rem;
    flex-wrap: wrap;
  }

  .cbt-timer {
    font-size: 1.1rem;
    min-width: auto;
  }

  .cbt-subject-tabs {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  .cbt-subject-tabs::-webkit-scrollbar {
    display: none;
  }

  .cbt-bottom-bar {
    padding: 0.65rem 0.75rem;
    gap: 0.4rem;
  }

  /* Hide keyboard shortcut hints on mobile */
  .keyboard-hint {
    display: none;
  }

  /* Calculator */
  .cbt-calculator {
    width: min(280px, 90vw);
    right: 0.5rem;
    bottom: 60px;
  }
}

@media (max-width: 480px) {
  .cbt-top-bar {
    padding: 0.5rem;
  }

  .cbt-candidate-info {
    display: none;
  }

  .cbt-timer {
    font-size: 1rem;
    padding: 0.3rem 0.6rem;
  }

  .cbt-main-pane {
    padding: 0.75rem;
  }

  .cbt-question-text {
    font-size: 0.92rem;
  }

  .cbt-option-label {
    padding: 0.65rem 0.75rem;
    font-size: 0.88rem;
  }

  .cbt-bottom-bar {
    flex-wrap: wrap;
    justify-content: center;
  }

  .cbt-nav-btn {
    font-size: 0.8rem;
    padding: 0.5rem 0.75rem;
  }
}

/* ── Result View Mobile ────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .result-slip {
    padding: 1.25rem;
    margin: 0.75rem;
    border-radius: var(--radius-md);
  }

  .result-scores-grid {
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
  }

  .result-slip-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
  }

  .result-actions {
    flex-wrap: wrap;
    gap: 0.5rem;
  }

  .result-actions button {
    flex: 1;
    min-width: 130px;
  }
}

@media (max-width: 480px) {
  .result-scores-grid {
    grid-template-columns: 1fr;
  }

  .result-slip {
    margin: 0.5rem;
    padding: 1rem;
  }
}

/* ── Bookmarks Mobile ──────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .bookmarks-page {
    padding: 1rem;
  }

  .bookmarks-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
  }

  .bookmarks-header button {
    width: 100%;
  }

  .review-question-card {
    padding: 1rem;
    margin-bottom: 0.75rem;
  }

  .review-q-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }
}

/* ── Modals Mobile ──────────────────────────────────────────────────────── */
@media (max-width: 600px) {
  .modal-backdrop {
    padding: 0.75rem;
    align-items: flex-end;
  }

  .modal-card {
    max-width: 100%;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    max-height: 85vh;
    animation: slideUpModal 0.22s cubic-bezier(0.16, 1, 0.3, 1);
  }

  @keyframes slideUpModal {
    from { opacity: 0; transform: translateY(40px); }
    to { opacity: 1; transform: translateY(0); }
  }

  .modal-body {
    max-height: calc(85vh - 130px);
  }

  .modal-footer {
    flex-direction: column-reverse;
    gap: 0.5rem;
  }

  .modal-footer button {
    width: 100%;
    justify-content: center;
  }
}

/* ── Touch Improvements ─────────────────────────────────────────────────── */
@media (hover: none) {
  /* Larger tap targets for touch devices */
  .nav-link,
  .btn-primary,
  .btn-secondary,
  .btn-outline,
  .btn-ghost {
    min-height: 44px;
  }

  .icon-tool-btn {
    min-width: 44px;
    min-height: 44px;
  }

  /* Disable hover transforms on touch (prevents sticky hover states) */
  .btn-primary:hover,
  .btn-secondary:hover,
  .launcher-card:hover {
    transform: none;
  }
}

/* ── Utility: scrollbar styling ──────────────────────────────────────────── */
::-webkit-scrollbar {
  width: 5px;
  height: 5px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--border-medium);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--border-strong);
}

/* ── Safe area insets (iPhone notch & mobile navigation bars) ───────────── */
@supports (padding: max(0px)) {
  .app-header {
    padding-top: max(0.5rem, env(safe-area-inset-top));
    padding-left: max(0.75rem, env(safe-area-inset-left));
    padding-right: max(0.75rem, env(safe-area-inset-right));
  }

  .cbt-bottom-bar {
    padding-bottom: max(0.75rem, env(safe-area-inset-bottom));
  }
}

/* ==========================================================================
   COMPREHENSIVE ALL-ROUND MOBILE SWEEP — FEATURE PAGES
   Covers: Dashboard, Novel Hub, Analytics, Cheatsheet, Advisor,
           Question Bank, Study Planner, Achievements, Profile
   ========================================================================== */

/* ── Global page wrapper containment ────────────────────────────────────── */
.achievements-page-wrapper,
.cheatsheet-page-wrapper,
.advisor-page-wrapper,
.qb-page-wrapper,
.analytics-page-wrapper,
.planner-page-wrapper,
.profile-page-wrapper,
.novel-hub-wrapper {
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  overflow-x: hidden;
}

/* ── Header: prevent it from being pushed off screen ────────────────────── */
@media (max-width: 768px) {
  .app-header {
    position: sticky;
    top: 0;
    z-index: 200;
    width: 100%;
    max-width: 100vw;
    box-sizing: border-box;
  }

  .header-inner {
    width: 100%;
    box-sizing: border-box;
    padding: 0.6rem 0.85rem;
    min-height: 50px;
    gap: 0.5rem;
  }

  /* Brand: keep logo + name only, no subtitle */
  .brand-sub {
    display: none !important;
  }

  .brand-name {
    font-size: 1rem !important;
  }

  /* Theme toggle + menu button */
  .theme-toggle-btn,
  .mobile-menu-btn {
    min-width: 38px;
    min-height: 38px;
    padding: 0.4rem;
  }
}

/* ── Dashboard wrapper ───────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .dashboard-wrapper {
    padding: 0.9rem 0.85rem;
    gap: 1rem;
    max-width: 100%;
    overflow-x: hidden;
  }

  /* Metrics: 2-col on tablet */
  .metrics-grid {
    grid-template-columns: 1fr 1fr !important;
    gap: 0.75rem;
  }

  /* Analytics section: single column */
  .analytics-section {
    grid-template-columns: 1fr !important;
    gap: 0.75rem;
  }

  /* Launcher cards: single column */
  .launcher-cards-grid {
    grid-template-columns: 1fr !important;
  }

  /* Dept selector scrollable */
  .dept-selector-tabs {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  /* Section header wrap properly */
  .section-header-row {
    flex-wrap: wrap;
    gap: 0.5rem;
  }

  /* Exam status bar single column */
  .exam-status-bar {
    grid-template-columns: 1fr;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
  }

  /* Score progress bar */
  .score-progress-wrap {
    flex-direction: column;
    gap: 0.4rem;
  }

  /* Novel feature card: stack vertically */
  .novel-feature-card {
    flex-direction: column;
    align-items: flex-start;
    padding: 1rem;
    gap: 0.85rem;
  }

  .novel-feat-actions {
    width: 100%;
    align-items: flex-start;
  }

  .btn-novel-open {
    width: 100%;
    justify-content: center;
  }

  /* Dashboard superhub grid: single column */
  .superhub-grid {
    grid-template-columns: 1fr !important;
  }

  /* Hub card: make text tighter */
  .hub-card {
    padding: 0.9rem 1rem;
    gap: 0.75rem;
  }
}

@media (max-width: 480px) {
  .dashboard-wrapper {
    padding: 0.75rem;
    gap: 0.85rem;
  }

  /* Metrics: 1-col on phone */
  .metrics-grid {
    grid-template-columns: 1fr !important;
  }

  .metric-card {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 0.85rem;
    padding: 0.85rem 1rem;
  }

  .metric-card .metric-header {
    display: none; /* icon row hidden; rely on label below */
  }

  /* Keep val and label stacked */
  .metric-val { font-size: 1.5rem !important; }
  .metric-sub { font-size: 0.72rem; }

  .launcher-card {
    padding: 1rem;
  }

  .launcher-title { font-size: 1.05rem; }
}

/* ── Novel Hub ───────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .novel-hub-wrapper {
    padding: 0.9rem 0.85rem;
    gap: 1.25rem;
  }

  /* Novel hero: stack book cover above info */
  .novel-hero {
    grid-template-columns: 1fr !important;
    padding: 1.25rem;
    gap: 1.25rem;
  }

  .book-cover {
    width: 90px;
    height: 130px;
    margin: 0 auto;
    transform: none !important;
  }

  .novel-hero-title {
    font-size: 1.5rem !important;
  }

  .novel-hero-desc {
    max-width: 100%;
  }

  .novel-hero-stats {
    flex-wrap: wrap;
    gap: 1rem;
    padding: 0.65rem 0;
  }

  .novel-hero-actions {
    flex-direction: column;
    gap: 0.5rem;
  }

  .novel-hero-actions .btn-primary,
  .novel-hero-actions .btn-outline {
    width: 100%;
    justify-content: center;
  }

  /* Tabs: scrollable row */
  .novel-tabs {
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    border-radius: var(--radius-sm);
  }

  .novel-tab {
    font-size: 0.8rem;
    padding: 0.5rem 0.75rem;
    white-space: nowrap;
  }

  /* Top bar: wrap neatly */
  .novel-hub-topbar {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

@media (max-width: 480px) {
  .novel-hub-wrapper {
    padding: 0.65rem 0.65rem;
  }

  .novel-hero {
    padding: 1rem;
  }

  .novel-hero-title {
    font-size: 1.25rem !important;
  }
}

/* ── Analytics Page ──────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .analytics-page-wrapper {
    padding: 0.9rem 0.85rem 3rem;
  }

  .an-hero-card {
    padding: 1.25rem;
  }

  .an-title {
    font-size: 1.35rem !important;
  }

  .an-metrics-grid {
    grid-template-columns: 1fr 1fr !important;
    gap: 0.75rem;
  }

  .an-charts-grid {
    grid-template-columns: 1fr !important;
    gap: 0.75rem;
  }

  .an-alert-weakness {
    grid-template-columns: 1fr !important;
  }

  .an-chart-card {
    padding: 1.1rem;
  }
}

@media (max-width: 480px) {
  .an-metrics-grid {
    grid-template-columns: 1fr !important;
  }

  .an-stat-card {
    padding: 0.85rem 1rem;
  }

  .an-title {
    font-size: 1.15rem !important;
  }
}

/* ── Formula Cheatsheet ──────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .cheatsheet-page-wrapper {
    padding: 0.9rem 0.85rem 3rem;
  }

  .cs-hero-card {
    padding: 1.25rem;
    border-radius: var(--radius-md);
  }

  .cs-title {
    font-size: 1.35rem !important;
  }

  .cs-subtitle {
    font-size: 0.85rem;
    max-width: 100%;
    margin-bottom: 1rem;
  }

  .cs-cards-grid {
    grid-template-columns: 1fr !important;
    gap: 1rem;
  }

  .cs-tabs-row {
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding-bottom: 4px;
  }

  .cs-tab-btn {
    white-space: nowrap;
    font-size: 0.82rem;
    padding: 6px 14px;
  }

  .cs-search-box {
    max-width: 100%;
  }
}

@media (max-width: 480px) {
  .cheatsheet-page-wrapper {
    padding: 0.65rem 0.65rem 3rem;
  }

  .cs-title { font-size: 1.1rem !important; }
  .cs-card { padding: 1rem; }
}

/* ── Subject Combination Advisor ─────────────────────────────────────────── */
@media (max-width: 768px) {
  .advisor-page-wrapper {
    padding: 0.9rem 0.85rem 3rem;
  }

  .adv-hero-card {
    padding: 1.25rem;
    border-radius: var(--radius-md);
  }

  .adv-title {
    font-size: 1.35rem !important;
  }

  .adv-subtitle {
    max-width: 100%;
    font-size: 0.85rem;
    margin-bottom: 1rem;
  }

  .adv-grid {
    grid-template-columns: 1fr !important;
    gap: 1rem;
  }

  .adv-tabs-row {
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding-bottom: 4px;
  }

  .adv-tab-btn {
    white-space: nowrap;
    font-size: 0.82rem;
    padding: 6px 14px;
  }

  .adv-search-box {
    max-width: 100%;
  }
}

@media (max-width: 480px) {
  .advisor-page-wrapper {
    padding: 0.65rem 0.65rem 3rem;
  }

  .adv-title { font-size: 1.1rem !important; }
  .adv-card { padding: 1rem; }
}

/* ── Question Bank Explorer ──────────────────────────────────────────────── */
@media (max-width: 768px) {
  .qb-page-wrapper {
    padding: 0.9rem 0.85rem 3rem;
  }

  .qb-hero-card {
    padding: 1.25rem;
    border-radius: var(--radius-md);
  }

  .qb-title {
    font-size: 1.35rem !important;
  }

  .qb-subtitle {
    max-width: 100%;
    font-size: 0.85rem;
    margin-bottom: 1rem;
  }

  .qb-filters-row {
    flex-direction: column;
    align-items: stretch;
    gap: 0.75rem;
  }

  .qb-filter-group {
    width: 100%;
  }

  .qb-select {
    width: 100%;
    min-width: unset;
  }

  .qb-drill-btn {
    margin-left: 0;
    width: 100%;
    text-align: center;
    justify-content: center;
  }

  .qb-options-grid {
    grid-template-columns: 1fr !important;
  }

  .qb-results-bar {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.25rem;
  }
}

@media (max-width: 480px) {
  .qb-page-wrapper {
    padding: 0.65rem 0.65rem 3rem;
  }

  .qb-title { font-size: 1.1rem !important; }
  .qb-item-card { padding: 1rem; }
  .qb-question-text { font-size: 0.9rem; }
}

/* ── Study Planner ───────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .planner-page-wrapper {
    padding: 0.9rem 0.85rem 3rem;
  }

  .sp-hero-card {
    grid-template-columns: 1fr !important;
    padding: 1.25rem;
    gap: 1.25rem;
  }

  .sp-title {
    font-size: 1.35rem !important;
  }

  .sp-subtitle {
    font-size: 0.85rem;
    margin-bottom: 1rem;
  }

  .sp-countdown-boxes {
    justify-content: flex-start;
    gap: 0.75rem;
  }

  .sp-clock-box {
    min-width: 64px;
    padding: 10px 12px;
  }

  .sp-clock-num {
    font-size: 1.5rem;
  }

  .sp-goal-box {
    min-width: unset;
    width: 100%;
  }

  .sp-days-grid {
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: 0.6rem;
  }

  .sp-timetable-card,
  .sp-syllabus-card {
    padding: 1.1rem;
  }

  .sp-syllabus-tabs {
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding-bottom: 4px;
  }

  .sp-card-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.4rem;
  }
}

@media (max-width: 480px) {
  .planner-page-wrapper {
    padding: 0.65rem 0.65rem 3rem;
  }

  .sp-title { font-size: 1.1rem !important; }

  .sp-days-grid {
    grid-template-columns: 1fr 1fr;
  }

  .sp-day-col {
    padding: 0.75rem;
  }
}

/* ── Achievements Vault ──────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .achievements-page-wrapper {
    padding: 0.9rem 0.85rem 3rem;
  }

  .achievements-hero-card {
    flex-direction: column;
    align-items: flex-start;
    padding: 1.25rem;
    gap: 1rem;
  }

  .ah-title {
    font-size: 1.35rem !important;
  }

  .ah-progress-box {
    width: 100%;
    min-width: unset;
  }

  .achievements-grid {
    grid-template-columns: 1fr !important;
    gap: 0.85rem;
  }
}

@media (max-width: 480px) {
  .achievements-page-wrapper {
    padding: 0.65rem 0.65rem 3rem;
  }

  .ah-title { font-size: 1.1rem !important; }
  .badge-card { padding: 1rem; }
}

/* ── Profile Page ────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .profile-page-wrapper {
    padding: 0.9rem 0.85rem 3rem;
  }

  .profile-page-grid {
    grid-template-columns: 1fr !important;
    gap: 1rem;
  }

  .profile-topbar {
    flex-wrap: wrap;
    gap: 0.5rem;
  }

  .profile-fields-row {
    grid-template-columns: 1fr !important;
  }

  .profile-save-btn {
    width: 100%;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .profile-page-wrapper {
    padding: 0.65rem 0.65rem 3rem;
  }

  .profile-avatar-ring {
    width: 64px;
    height: 64px;
    font-size: 1.5rem;
  }

  .profile-display-name {
    font-size: 1.05rem;
  }
}

/* ── Daily Challenge Card ────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .daily-challenge-card {
    padding: 1.1rem;
    border-radius: 14px;
  }

  .dc-body {
    grid-template-columns: 1fr !important;
    gap: 1rem;
  }

  .dc-title { font-size: 1.1rem; }
  .dc-start-btn { width: 100%; }
}

/* ── Section hero title clamp ────────────────────────────────────────────── */
@media (max-width: 480px) {
  .cs-title,
  .adv-title,
  .qb-title,
  .an-title,
  .sp-title,
  .ah-title {
    font-size: 1.05rem !important;
    line-height: 1.3;
  }
}

/* ── Prevent any page-level horizontal overflow ──────────────────────────── */
@media (max-width: 900px) {
  /* Only clamp block-level containers, not SVG icons */
  div, section, article, aside, nav, main, header, footer, form,
  ul, ol, li, p, h1, h2, h3, h4, h5, h6, blockquote {
    max-width: 100%;
    box-sizing: border-box;
  }

  /* Responsive images */
  img {
    max-width: 100%;
    height: auto;
  }

  /* Allow tables to scroll rather than overflow */
  table {
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    max-width: 100%;
  }
}