/**
 * Responsive System — Enterprise Safe Mode.
 * Additive only: no removal of IDs/names/classes. No DOM change.
 * Breakpoints: 480 (mobile), 768 (tablet), 1024 (laptop), 1440 (desktop), 1920 (4K).
 */

:root {
  --container-max: 1440px;
  --container-max-wide: 1700px;
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --radius: 8px;
  --text-base: clamp(14px, 1vw, 16px);
  --text-lg: clamp(16px, 1.2vw, 20px);
  --text-xl: clamp(20px, 2vw, 28px);
}

html {
  overflow-x: hidden;
  -webkit-text-size-adjust: 100%;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

/* ---- Container ---- */
.container,
.content,
main.content {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--spacing-md);
  padding-right: var(--spacing-md);
}

/* ---- Fluid typography (additive) ---- */
body {
  font-size: var(--text-base);
  line-height: 1.5;
}

h1, .page-title { font-size: var(--text-xl); }
h2, .section-title { font-size: var(--text-lg); }

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

/* ---- Layout: sidebar + content (layout.html / drive/layout) ---- */
.app-wrap {
  display: flex;
  flex-wrap: wrap;
  min-height: 100vh;
}

.sidebar {
  padding: var(--spacing-md);
}

.main.content,
main.content {
  flex: 1;
  min-width: 0;
}

/* ---- Grids: auto-fit ---- */
.apps-grid {
  width: 100%;
  max-width: 1100px;
  margin-left: auto;
  margin-right: auto;
  padding: var(--spacing-md);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: var(--spacing-lg);
  justify-items: center;
}

.requests-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--spacing-md);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-md);
}

/* ---- Tables: scroll on small screens ---- */
table {
  width: 100%;
  border-collapse: collapse;
}

.table-wrap,
[style*="overflow:auto"] {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

/* ---- Forms ---- */
input,
select,
textarea {
  max-width: 100%;
}

/* ---- Navbar (admin / GM / HR / Dept / Employee) ---- */
.navbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
}

/* ---- Login / Forgot container ---- */
.login-container {
  width: 100%;
  max-width: 420px;
  margin-left: auto;
  margin-right: auto;
  padding: var(--spacing-lg);
}

/* ========== Breakpoint: Mobile (max 480px) ========== */
@media (max-width: 480px) {
  .container,
  .content,
  main.content {
    padding-left: var(--spacing-sm);
    padding-right: var(--spacing-sm);
  }

  .sidebar {
    padding: var(--spacing-sm);
  }

  .apps-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    padding: var(--spacing-sm);
  }

  .app-item {
    width: 100%;
    max-width: 200px;
    margin: 0 auto;
  }

  .requests-grid {
    grid-template-columns: 1fr;
  }

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

  .table-wrap,
  div[style*="overflow:auto"] {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin: 0 calc(-1 * var(--spacing-sm));
    padding: 0 var(--spacing-sm);
  }

  table {
    min-width: 500px;
  }

  .navbar {
    flex-direction: column;
    align-items: stretch;
    text-align: center;
  }

  .navbar .logo-box,
  .navbar .user-info {
    justify-content: center;
  }

  .login-container,
  .container {
    padding: var(--spacing-md);
    max-width: 100%;
  }

  button,
  .btn,
  .logout-btn,
  .new-request-btn,
  .export-btn {
    min-height: 44px;
    padding: var(--spacing-sm) var(--spacing-md);
  }

  .filters {
    flex-direction: column;
  }

  .filters .form-control,
  .filters input,
  .filters select {
    width: 100%;
  }

  .tabs {
    flex-wrap: wrap;
  }

  .tab-btn {
    flex: 1 1 auto;
    min-width: 0;
  }
}

/* ========== Breakpoint: Tablet (max 768px) ========== */
@media (max-width: 768px) {
  .app-wrap {
    flex-direction: column;
  }

  .sidebar {
    width: 100%;
    max-width: 100%;
    padding: var(--spacing-md);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-sm);
    border-left: none;
    border-bottom: 1px solid #e5eaf3;
  }

  .sidebar .brand-logo {
    width: 32px;
    height: 32px;
    margin: 0 var(--spacing-sm) 0 0;
  }

  .sidebar h3 {
    margin: 0 auto 0 0;
    font-size: 1rem;
  }

  .sidebar a {
    margin: 0;
    padding: 6px 10px;
  }

  .content,
  main.content {
    padding: var(--spacing-md);
    min-width: 0;
  }

  .apps-grid {
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: var(--spacing-md);
  }

  .requests-grid {
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  }

  .grid {
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  }

  .navbar {
    flex-wrap: wrap;
    justify-content: space-between;
  }

  .navbar .user-info {
    width: 100%;
    order: 3;
    justify-content: center;
  }

  .page-header {
    flex-wrap: wrap;
    gap: var(--spacing-sm);
  }

  .filters {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
  }

  .scope-switch {
    flex-wrap: wrap;
  }

  .toggle-btn {
    flex: 1 1 auto;
    min-width: 0;
  }
}

/* ========== Breakpoint: Small Laptop (max 1024px) ========== */
@media (max-width: 1024px) {
  .container,
  .content,
  main.content {
    padding-left: var(--spacing-md);
    padding-right: var(--spacing-md);
  }

  .requests-grid {
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  }
}

/* ========== Large Desktop (min 1440px) ========== */
@media (min-width: 1440px) {
  .container,
  .content,
  main.content {
    max-width: var(--container-max);
    padding-left: var(--spacing-lg);
    padding-right: var(--spacing-lg);
  }

  .sidebar {
    padding: var(--spacing-lg);
  }

  .apps-grid {
    max-width: 1200px;
    gap: var(--spacing-xl);
  }

  .requests-grid {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
  }

  .grid {
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--spacing-lg);
  }
}

/* ========== TV / 4K (min 1920px) ========== */
@media (min-width: 1920px) {
  :root {
    --container-max: 1700px;
  }

  .container,
  .content,
  main.content {
    max-width: var(--container-max-wide);
    padding-left: var(--spacing-xl);
    padding-right: var(--spacing-xl);
  }

  body {
    font-size: var(--text-base);
    line-height: 1.55;
  }

  .sidebar {
    padding: var(--spacing-xl);
  }

  .apps-grid {
    max-width: 1400px;
    gap: var(--spacing-xl);
  }

  .app-item {
    max-width: 160px;
  }

  .requests-grid {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
  }

  .grid {
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--spacing-xl);
  }

  .login-container {
    max-width: 480px;
    padding: var(--spacing-xl);
  }

  button,
  .btn {
    padding: var(--spacing-md) var(--spacing-lg);
  }
}

/* ---- Drive dashboard: inner layout (extends drive/layout) ---- */
@media (max-width: 768px) {
  .container {
    flex-direction: column;
  }

  .sidebar + .main,
  .sidebar + [class*="main"] {
    width: 100%;
  }
}

/* ---- Prevent horizontal scroll ---- */
body,
html {
  overflow-x: hidden;
}

/* ---- Touch-friendly tap targets (mobile) ---- */
@media (max-width: 768px) {
  a,
  button {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .sidebar a {
    min-height: 44px;
  }
}

/* ---- Zoom safe (accessibility) ---- */
@media (max-width: 480px) {
  html {
    font-size: 16px;
  }
}

/* ========== Modals: responsive (EmployeePage, Dept, GM, HR, Admin) ========== */
.request-modal,
.file-viewer-modal,
.modal {
  padding: var(--spacing-sm);
  align-items: flex-start;
  overflow-y: auto;
}

.request-modal-content,
.file-viewer-content,
.modal-content,
.modal-box {
  width: 100%;
  max-width: min(500px, calc(100vw - var(--spacing-md) * 2));
  max-height: min(90vh, calc(100vh - var(--spacing-md) * 2));
  overflow-y: auto;
  margin: var(--spacing-md) auto;
}

.request-modal-content .form-group,
.modal-content .form-group {
  margin-bottom: var(--spacing-md);
}

.request-modal-content input,
.request-modal-content select,
.request-modal-content textarea,
.modal-content input,
.modal-content select,
.modal-content textarea {
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
}

.request-modal-content .submit-btn,
.modal-content button[type="submit"] {
  width: 100%;
  min-height: 44px;
}

@media (max-width: 480px) {
  .request-modal,
  .file-viewer-modal,
  .modal {
    padding: var(--spacing-xs);
    align-items: flex-start;
  }

  .request-modal-content,
  .file-viewer-content,
  .modal-content,
  .modal-box {
    width: 100%;
    max-width: 100%;
    padding: var(--spacing-md);
    margin: var(--spacing-sm) 0;
    border-radius: var(--radius);
  }

  .request-modal-content h3,
  .modal-content h3,
  .modal-title {
    font-size: var(--text-lg);
  }
}

@media (max-width: 768px) {
  .request-modal-content,
  .modal-content {
    width: 95%;
    max-width: 100%;
    padding: var(--spacing-lg);
  }
}

/* ---- Page header & filters: full width on small screens ---- */
@media (max-width: 768px) {
  .page-header {
    flex-direction: column;
    align-items: stretch;
  }

  .page-header .export-section,
  .page-header .new-request-btn {
    width: 100%;
  }

  .export-section {
    flex-wrap: wrap;
    gap: var(--spacing-sm);
  }

  .custom-dropdown {
    width: 100%;
    max-width: 100%;
  }

  .custom-dropdown .dropdown-selected,
  .custom-dropdown .dropdown-list {
    width: 100%;
  }
}

@media (max-width: 480px) {
  .page-header {
    gap: var(--spacing-sm);
  }

  .page-title {
    font-size: var(--text-lg);
  }

  .section-title {
    font-size: var(--text-base);
  }
}

/* ---- Bar (preview / top bar): responsive ---- */
.bar {
  padding: var(--spacing-sm) var(--spacing-md);
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

@media (max-width: 480px) {
  .bar {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--text-base);
  }

  .bar .brand-logo {
    width: 24px;
    height: 24px;
  }
}

/* ---- Floating action / fixed buttons: safe area ---- */
[style*="position: fixed"][style*="bottom"] {
  bottom: max(12px, env(safe-area-inset-bottom));
}

@media (max-width: 480px) {
  [style*="position: fixed"] {
    min-width: 44px;
    min-height: 44px;
  }
}