/* ============================================================
   Mukuba University Help Desk — Main Stylesheet v5
   Units: rem-based (1rem = 16px base)
   Fully responsive: desktop, tablet, Android, iPhone
   ============================================================ */

/* ---- Base font size (everything scales from here) --------- */
html {
  font-size: 16px; /* 1rem = 16px */
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  -moz-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

/* ---- CSS Variables (rem-based sizing) --------------------- */
:root {
  /* Colors */
  --navy:       #0d1b2a;
  --navy-mid:   #1a2e44;
  --navy-light: #243b55;
  --teal:       #70C247;
  --teal-dark:  #5aab36;
  --teal-glow:  rgba(112,194,71,.18);
  --accent:     #3ecfff;
  --accent2:    #f7b731;
  --white:      #ffffff;
  --off-white:  #f4f7fb;
  --text-main:  #1e2d3d;
  --text-muted: #6b7f96;
  --text-light: #a8b8c8;
  --border:     #dce5ef;
  --danger:     #e74c3c;
  --success:    #27ae60;
  --warning:    #f39c12;
  --info:       #2980b9;

  /* Shadows */
  --shadow-sm:  0 0.125rem 0.5rem rgba(13,27,42,.08);
  --shadow-md:  0 0.25rem 1.25rem rgba(13,27,42,.12);
  --shadow-lg:  0 0.5rem 2.5rem rgba(13,27,42,.18);

  /* Spacing & Shape */
  --radius:     0.75rem;   /* 12px */
  --radius-sm:  0.5rem;    /* 8px */
  --radius-lg:  1.125rem;  /* 18px */

  /* Layout */
  --sidebar-w:  16.25rem;  /* 260px */
  --topbar-h:   3.75rem;   /* 60px */

  /* Transitions */
  --transition: 0.22s cubic-bezier(.4,0,.2,1);
}

/* ---- Reset ------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: 'Sora', sans-serif;
  background: var(--off-white);
  color: var(--text-main);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
ul { list-style: none; }
input, textarea, select, button { font-family: inherit; }

/* ---- Layout ----------------------------------------------- */
.app-wrapper { display: flex; min-height: 100vh; }

/* ============================================================
   SIDEBAR
   ============================================================ */
.sidebar {
  width: var(--sidebar-w);
  background: var(--navy);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0;
  height: 100vh;
  height: 100dvh;
  z-index: 200;
  overflow: hidden;
  transition: transform var(--transition);
  will-change: transform;
}

@media (max-width: 56.25rem) { /* 900px */
  .sidebar {
    transform: translateX(-100%);
    box-shadow: none;
  }
  .sidebar.open {
    transform: translateX(0);
    box-shadow: 0.25rem 0 1.875rem rgba(0,0,0,.35);
  }
}

/* Sidebar Brand */
.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1.375rem 1.25rem 1.125rem;
  border-bottom: 1px solid rgba(255,255,255,.07);
  flex-shrink: 0;
}
.sidebar-logo-img {
  width: 2.375rem;
  height: 2.375rem;
  object-fit: contain;
  flex-shrink: 0;
  filter: brightness(1.05) drop-shadow(0 0.125rem 0.375rem rgba(0,0,0,.4));
}
.brand-name {
  display: block;
  color: var(--white);
  font-weight: 700;
  font-size: 0.9rem;
  line-height: 1.2;
}
.brand-sub {
  display: block;
  color: var(--text-light);
  font-size: 0.675rem;
}

/* Sidebar User */
.sidebar-user {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  padding: 0.875rem 1.25rem;
  border-bottom: 1px solid rgba(255,255,255,.07);
  flex-shrink: 0;
}
.user-avatar-sm {
  width: 2.125rem;
  height: 2.125rem;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--teal-dark), var(--accent));
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.875rem;
  flex-shrink: 0;
}
.user-avatar-img {
  width: 2.125rem;
  height: 2.125rem;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid rgba(255, 255, 255, 0.2);
  flex-shrink: 0;
}
.user-name-sm {
  display: block;
  color: var(--white);
  font-size: 0.8125rem;
  font-weight: 600;
  line-height: 1.3;
}
.user-role-sm {
  display: block;
  color: var(--teal);
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* Sidebar Nav */
.sidebar-nav {
  flex: 1;
  padding: 0.625rem 0.625rem 0;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: var(--navy-light) transparent;
}
.sidebar-nav::-webkit-scrollbar { width: 0.25rem; }
.sidebar-nav::-webkit-scrollbar-thumb { background: var(--navy-light); border-radius: 0.25rem; }

.nav-section-label {
  color: var(--text-light);
  font-size: 0.625rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  padding: 0.875rem 0.5rem 0.3125rem;
  font-weight: 700;
}
.nav-item {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  padding: 0.5625rem 0.75rem;
  border-radius: var(--radius-sm);
  color: var(--text-light);
  font-size: 0.8375rem;
  font-weight: 500;
  transition: all var(--transition);
  margin-bottom: 0.125rem;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}
.nav-item i { width: 1.125rem; text-align: center; font-size: 0.875rem; flex-shrink: 0; }
.nav-item:hover { background: rgba(255,255,255,.08); color: var(--white); }
.nav-item.active {
  background: var(--teal-glow);
  color: var(--teal);
  border-left: 0.1875rem solid var(--teal);
  padding-left: 0.5625rem;
}
.nav-item.nav-sub {
  padding-left: 1.85rem;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.78);
}
.nav-item.nav-sub:hover {
  color: var(--white);
}
.nav-logout:hover { background: rgba(231,76,60,.15); color: #e74c3c; }

/* Sidebar Footer — always visible */
.sidebar-footer {
  flex-shrink: 0;
  padding: 0.5rem 0.625rem;
  border-top: 1px solid rgba(255,255,255,.1);
  background: var(--navy);
}

/* Sidebar mobile overlay */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.55);
  z-index: 199;
  -webkit-backdrop-filter: blur(2px);
  backdrop-filter: blur(2px);
}
.sidebar-overlay.show { display: block; }

/* ============================================================
   MAIN CONTENT
   ============================================================ */
.main-content {
  flex: 1;
  margin-left: var(--sidebar-w);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  min-width: 0;
}
@media (max-width: 56.25rem) {
  .main-content { margin-left: 0; }
}

/* ---- Topbar ----------------------------------------------- */
.topbar {
  height: var(--topbar-h);
  background: var(--white);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 1.125rem;
  gap: 0.75rem;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}
.sidebar-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.125rem;
  cursor: pointer;
  color: var(--text-muted);
  padding: 0.375rem 0.5rem;
  border-radius: var(--radius-sm);
  transition: background var(--transition);
  flex-shrink: 0;
  -webkit-tap-highlight-color: transparent;
}
.sidebar-toggle:hover { background: var(--off-white); }
@media (max-width: 56.25rem) {
  .sidebar-toggle { display: flex; align-items: center; }
}
.topbar-title {
  font-weight: 700;
  font-size: 0.9375rem;
  color: var(--text-main);
  flex: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.topbar-actions { display: flex; align-items: center; gap: 0.5rem; flex-shrink: 0; }
.topbar-btn {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 0.9375rem;
  transition: all var(--transition);
  position: relative;
  -webkit-tap-highlight-color: transparent;
}
.topbar-btn:hover { background: var(--off-white); color: var(--teal); }
.notif-badge {
  position: absolute;
  top: -0.125rem;
  right: -0.125rem;
  background: var(--danger);
  color: #fff;
  width: 1.0625rem;
  height: 1.0625rem;
  border-radius: 50%;
  font-size: 0.5625rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
}
.topbar-avatar {
  width: 2.125rem;
  height: 2.125rem;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--teal-dark), var(--accent));
  color: var(--white);
  font-weight: 700;
  font-size: 0.8125rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: box-shadow var(--transition);
  flex-shrink: 0;
  -webkit-tap-highlight-color: transparent;
}
.topbar-avatar:hover { box-shadow: 0 0 0 0.1875rem var(--teal-glow); }

/* ---- Page Content ----------------------------------------- */
.page-content {
  padding: 1.5rem;
  flex: 1;
  max-width: 87.5rem;
  width: 100%;
  margin: 0 auto;
}
@media (max-width: 37.5rem) {
  .page-content { padding: 0.875rem 0.75rem; }
}

/* ============================================================
   FLASH MESSAGES
   ============================================================ */
.flash {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  padding: 0.6875rem 1rem;
  border-radius: var(--radius-sm);
  margin-bottom: 1.125rem;
  font-size: 0.875rem;
  font-weight: 500;
  animation: slideIn .3s ease;
}
.flash span { font-size: 0.9375rem; font-weight: 700; flex-shrink: 0; }
.flash-success { background: #d5f5e3; color: #1e8449; border-left: 0.25rem solid var(--success); }
.flash-error   { background: #fde8e8; color: #c0392b; border-left: 0.25rem solid var(--danger); }
.flash-info    { background: #d6eaf8; color: #1a5276; border-left: 0.25rem solid var(--info); }

/* ============================================================
   CARDS
   ============================================================ */
.card {
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  overflow: hidden;
}
.card-header {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.625rem;
  flex-wrap: wrap;
}
.card-title { font-weight: 700; font-size: 0.9125rem; color: var(--text-main); }
.card-body  { padding: 1.25rem; }

/* ============================================================
   STAT CARDS
   ============================================================ */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(10rem, 1fr));
  gap: 0.875rem;
  margin-bottom: 1.375rem;
}
.stat-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 1.125rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  display: flex;
  align-items: flex-start;
  gap: 0.875rem;
  transition: transform var(--transition), box-shadow var(--transition);
}
.stat-card:hover { transform: translateY(-0.125rem); box-shadow: var(--shadow-md); }
.stat-icon {
  width: 2.75rem;
  height: 2.75rem;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.0625rem;
  flex-shrink: 0;
}
.stat-icon.teal   { background: var(--teal-glow); color: var(--teal-dark); }
.stat-icon.orange { background: rgba(247,183,49,.18); color: #d68910; }
.stat-icon.red    { background: rgba(231,76,60,.12); color: var(--danger); }
.stat-icon.blue   { background: rgba(41,128,185,.12); color: var(--info); }
.stat-icon.green  { background: rgba(39,174,96,.12); color: var(--success); }
.stat-label { font-size: 0.6875rem; color: var(--text-muted); font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; }
.stat-value { font-size: 1.75rem; font-weight: 800; color: var(--text-main); line-height: 1.1; margin-top: 0.125rem; }
.stat-sub   { font-size: 0.6875rem; color: var(--text-muted); margin-top: 0.125rem; }

/* ============================================================
   TABLES
   ============================================================ */
.table-responsive { overflow-x: auto; -webkit-overflow-scrolling: touch; }
table { width: 100%; border-collapse: collapse; min-width: 31.25rem; }
thead tr { border-bottom: 0.125rem solid var(--border); }
thead th {
  padding: 0.625rem 0.75rem;
  text-align: left;
  font-size: 0.6875rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  white-space: nowrap;
}
tbody tr { border-bottom: 1px solid var(--border); transition: background var(--transition); }
tbody tr:last-child { border-bottom: none; }
tbody tr:hover { background: #f8fbff; }
tbody td { padding: 0.6875rem 0.75rem; font-size: 0.84rem; vertical-align: middle; }

/* ============================================================
   BADGES
   ============================================================ */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.1875rem 0.5625rem;
  border-radius: 1.25rem;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  white-space: nowrap;
}
.badge-open      { background: #d6eaf8; color: #1a5276; }
.badge-progress  { background: rgba(247,183,49,.2); color: #9a6700; }
.badge-pending   { background: rgba(231,76,60,.12); color: #922b21; }
.badge-resolved  { background: #d5f5e3; color: #1e8449; }
.badge-closed    { background: var(--off-white); color: var(--text-muted); }
.pri-low         { background: #d5f5e3; color: #1e8449; }
.pri-medium      { background: #d6eaf8; color: #1a5276; }
.pri-high        { background: rgba(247,183,49,.2); color: #9a6700; }
.pri-urgent      { background: rgba(231,76,60,.12); color: #922b21; }

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.5625rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.84rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
  text-decoration: none;
  white-space: nowrap;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
  min-height: 2.5rem; /* touch-friendly minimum */
}
.btn-primary { background: var(--teal); color: var(--navy); }
.btn-primary:hover { background: var(--teal-dark); box-shadow: 0 0.25rem 0.875rem rgba(112,194,71,.3); }
.btn-danger  { background: var(--danger); color: #fff; }
.btn-danger:hover  { background: #c0392b; }
.btn-outline {
  background: transparent;
  color: var(--text-muted);
  border: 0.09375rem solid var(--border);
}
.btn-outline:hover { border-color: var(--teal); color: var(--teal); }
.btn-sm { padding: 0.375rem 0.6875rem; font-size: 0.76rem; min-height: 2rem; }
.btn-block { width: 100%; justify-content: center; }
.btn-navy { background: var(--navy); color: var(--white); }
.btn-navy:hover { background: var(--navy-mid); }

/* ============================================================
   FORMS
   ============================================================ */
.form-group { margin-bottom: 1rem; }
label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 0.3125rem;
}
.form-control {
  width: 100%;
  padding: 0.625rem 0.8125rem;
  border: 0.09375rem solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.9375rem; /* 15px - prevents iOS zoom on focus */
  color: var(--text-main);
  background: var(--white);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
  -webkit-appearance: none;
  appearance: none;
}
.form-control:focus {
  border-color: var(--teal);
  box-shadow: 0 0 0 0.1875rem var(--teal-glow);
}
textarea.form-control { resize: vertical; min-height: 6.25rem; }
select.form-control {
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236b7f96' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  padding-right: 2rem;
}
.form-hint { font-size: 0.71875rem; color: var(--text-muted); margin-top: 0.25rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 0.875rem; }
@media (max-width: 31.25rem) {
  .form-row { grid-template-columns: 1fr; gap: 0; }
}

/* ============================================================
   AUTH PAGE (Login/Register)
   ============================================================ */
.auth-page {
  min-height: 100vh;
  background: var(--navy);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.25rem;
  position: relative;
  overflow: hidden;
}

/* Campus background image */
.auth-page::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url('/helpdesk/css/mukuba_bg.png');
  background-size: cover;
  background-position: center center;
  background-repeat: no-repeat;
  opacity: 0.42;
  z-index: 0;
  pointer-events: none;
}

/* Dark overlay */
.auth-page::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(13,27,42,0.93) 0%,
    rgba(13,27,42,0.72) 50%,
    rgba(13,27,42,0.88) 100%
  );
  z-index: 1;
  pointer-events: none;
}

.auth-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 2.5rem 2.25rem;
  width: 100%;
  max-width: 27.5rem;
  box-shadow: var(--shadow-lg);
  animation: fadeUp .4s ease;
  position: relative;
  z-index: 2;
}
@media (max-width: 30rem) {
  .auth-card { padding: 1.75rem 1.25rem; border-radius: var(--radius); }
}

/* Logo area */
.auth-logo { text-align: center; margin-bottom: 0; }
.auth-logo-img {
  width: 5.5rem;
  height: 5.5rem;
  object-fit: contain;
  display: block;
  margin: 0 auto 0.75rem;
  filter: drop-shadow(0 0.25rem 0.75rem rgba(0,0,0,.2));
}
.auth-logo h1 { font-size: 1.25rem; font-weight: 800; color: var(--navy); margin-bottom: 0.125rem; }
.auth-subtitle { font-size: 0.78rem; color: var(--text-muted); display: block; }
.auth-tagline  { font-size: 0.6875rem; color: var(--teal-dark); font-weight: 600; text-transform: uppercase; letter-spacing: 0.08em; margin-top: 0.1875rem; display: block; }
.auth-logo-divider {
  width: 3rem;
  height: 0.1875rem;
  background: linear-gradient(90deg, var(--teal), var(--accent));
  border-radius: 0.125rem;
  margin: 0.625rem auto 1.125rem;
}

.auth-tabs { display: flex; gap: 0.5rem; margin-bottom: 1.375rem; }
.auth-tab {
  flex: 1;
  padding: 0.5625rem;
  border-radius: var(--radius-sm);
  text-align: center;
  font-size: 0.8125rem;
  font-weight: 600;
  cursor: pointer;
  border: 0.09375rem solid var(--border);
  color: var(--text-muted);
  background: var(--off-white);
  transition: all var(--transition);
  -webkit-tap-highlight-color: transparent;
}
.auth-tab.active { background: var(--navy); color: var(--white); border-color: var(--navy); }
.auth-form { display: none; }
.auth-form.show { display: block; }

.campus-watermark {
  position: fixed;
  bottom: 1rem;
  left: 1.25rem;
  color: rgba(255,255,255,.25);
  font-size: 0.6875rem;
  font-family: 'Sora', sans-serif;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  z-index: 2;
  pointer-events: none;
}
@media (max-width: 30rem) { .campus-watermark { display: none; } }

/* ============================================================
   DASHBOARD GRID
   ============================================================ */
.dashboard-grid { display: grid; grid-template-columns: 2fr 1fr; gap: 1.25rem; }
@media (max-width: 56.25rem) {
  .dashboard-grid { grid-template-columns: 1fr; }
}

/* ============================================================
   TICKET THREAD
   ============================================================ */
.ticket-thread { display: flex; flex-direction: column; gap: 0.875rem; }
.thread-msg { display: flex; gap: 0.75rem; animation: fadeUp .3s ease; }
.thread-avatar {
  width: 2.125rem;
  height: 2.125rem;
  border-radius: 50%;
  flex-shrink: 0;
  background: linear-gradient(135deg, var(--navy-mid), var(--navy-light));
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.78rem;
}
.thread-avatar.student { background: linear-gradient(135deg, var(--teal-dark), var(--accent)); color: var(--navy); }
.thread-bubble {
  flex: 1;
  background: var(--off-white);
  border-radius: 0 var(--radius) var(--radius) var(--radius);
  padding: 0.6875rem 0.875rem;
  border: 1px solid var(--border);
  min-width: 0;
}
.thread-bubble.staff-bubble {
  background: var(--navy);
  color: var(--white);
  border-radius: var(--radius) 0 var(--radius) var(--radius);
  border-color: var(--navy);
}
.thread-meta { font-size: 0.71875rem; color: var(--text-muted); margin-bottom: 0.3125rem; }
.thread-bubble.staff-bubble .thread-meta { color: var(--text-light); }
.thread-text { font-size: 0.875rem; line-height: 1.6; word-break: break-word; }

/* ============================================================
   CHAT
   ============================================================ */
.chat-layout {
  display: grid;
  grid-template-columns: 16.25rem 1fr;
  height: calc(100vh - 6.875rem);
  min-height: 25rem;
}
@media (max-width: 43.75rem) {
  .chat-layout { grid-template-columns: 1fr; height: auto; }
  .chat-list   { max-height: 13.75rem; border-right: none; border-bottom: 1px solid var(--border); }
  .chat-window { height: 60vh; min-height: 20rem; }
}
.chat-list { border-right: 1px solid var(--border); overflow-y: auto; background: var(--white); }
.chat-list-header { padding: 0.875rem 1rem; border-bottom: 1px solid var(--border); font-weight: 700; font-size: 0.875rem; }
.chat-session-item {
  padding: 0.8125rem 0.9375rem;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  transition: background var(--transition);
  display: flex;
  align-items: center;
  gap: 0.625rem;
  -webkit-tap-highlight-color: transparent;
}
.chat-session-item:hover, .chat-session-item.active { background: #f0f9ff; }
.chat-status-dot { width: 0.5rem; height: 0.5rem; border-radius: 50%; flex-shrink: 0; }
.chat-status-dot.waiting { background: var(--warning); }
.chat-status-dot.active  { background: var(--teal); }
.chat-status-dot.closed  { background: var(--text-light); }
.chat-session-name { font-size: 0.84rem; font-weight: 600; }
.chat-session-sub  { font-size: 0.71875rem; color: var(--text-muted); }
.chat-window { display: flex; flex-direction: column; background: var(--off-white); }
.chat-window-header {
  padding: 0.75rem 1.125rem;
  background: var(--white);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 0.625rem;
  flex-wrap: wrap;
}
.chat-messages {
  flex: 1;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
}
.chat-msg { display: flex; gap: 0.5rem; max-width: 80%; }
.chat-msg.mine { flex-direction: row-reverse; align-self: flex-end; }
.chat-msg-bubble {
  background: var(--white);
  border-radius: 0.75rem;
  padding: 0.5625rem 0.8125rem;
  font-size: 0.875rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  word-break: break-word;
}
.chat-msg.mine .chat-msg-bubble { background: var(--navy); color: var(--white); border-color: var(--navy); }
.chat-msg-time { font-size: 0.6875rem; color: var(--text-muted); margin-top: 0.1875rem; display: block; }
.chat-msg.mine .chat-msg-time { text-align: right; color: var(--text-light); }
.chat-msg-meta { display: flex; align-items: center; gap: 0.5rem; }
.chat-msg.mine .chat-msg-meta { justify-content: flex-end; }
.chat-reply-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 0.65rem;
  cursor: pointer;
  padding: 0;
}
.chat-reply-btn:hover { color: var(--teal); }
.chat-reply-quote {
  background: rgba(0, 0, 0, 0.03);
  border-left: 3px solid var(--teal);
  padding: 0.375rem 0.5rem;
  border-radius: 0.5rem;
  margin-bottom: 0.375rem;
  font-size: 0.75rem;
}
.chat-msg.mine .chat-reply-quote {
  border-left-color: rgba(255, 255, 255, 0.6);
  background: rgba(255, 255, 255, 0.08);
  color: var(--white);
}
.chat-reply-name { font-weight: 600; color: var(--teal-dark); margin-bottom: 0.125rem; }
.chat-msg.mine .chat-reply-name { color: var(--text-light); }
.chat-reply-text { color: var(--text-muted); }
.chat-msg.mine .chat-reply-text { color: var(--text-light); }
.chat-reply-preview {
  flex-basis: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  background: var(--teal-glow);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.375rem 0.5rem;
  font-size: 0.75rem;
}
.chat-reply-preview-text { color: var(--teal-dark); }
.chat-reply-cancel {
  background: transparent;
  border: none;
  font-size: 1rem;
  line-height: 1;
  cursor: pointer;
  color: var(--text-muted);
}
.chat-input-area {
  padding: 0.75rem 1rem;
  background: var(--white);
  border-top: 1px solid var(--border);
  display: flex;
  gap: 0.5rem;
  align-items: flex-end;
}
.chat-input-area textarea {
  flex: 1;
  resize: none;
  border: 0.09375rem solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.5625rem 0.75rem;
  font-size: 0.9375rem;
  font-family: inherit;
  outline: none;
  min-height: 2.75rem;
  max-height: 6.875rem;
  transition: border-color var(--transition);
  -webkit-appearance: none;
}
.chat-input-area textarea:focus { border-color: var(--teal); }

/* ============================================================
   FAQ
   ============================================================ */
.faq-search-bar {
  background: var(--navy);
  border-radius: var(--radius);
  padding: 1.75rem 1.5rem;
  text-align: center;
  margin-bottom: 1.375rem;
  position: relative;
  overflow: hidden;
}
.faq-search-bar::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 60% at 50% 50%, rgba(0,201,167,.15) 0%, transparent 70%);
}
.faq-search-bar h2 { color: var(--white); font-size: 1.3rem; margin-bottom: 0.375rem; position: relative; }
.faq-search-bar p  { color: var(--text-light); font-size: 0.84rem; margin-bottom: 1rem; position: relative; }
.faq-search-input  { position: relative; max-width: 28.75rem; margin: 0 auto; }
.faq-search-input input {
  width: 100%;
  padding: 0.6875rem 2.875rem 0.6875rem 1rem;
  border-radius: 3.125rem;
  border: none;
  font-size: 0.9375rem;
  outline: none;
  box-shadow: var(--shadow-md);
  -webkit-appearance: none;
}
.faq-search-input i { position: absolute; right: 1rem; top: 50%; transform: translateY(-50%); color: var(--text-muted); }
.faq-cats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(8.75rem, 1fr));
  gap: 0.75rem;
  margin-bottom: 1.375rem;
}
.faq-cat-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 1.125rem 0.875rem;
  text-align: center;
  border: 0.125rem solid var(--border);
  cursor: pointer;
  transition: all var(--transition);
  -webkit-tap-highlight-color: transparent;
}
.faq-cat-card:hover, .faq-cat-card.active { border-color: var(--teal); background: var(--teal-glow); }
.faq-cat-card i { font-size: 1.3rem; color: var(--teal); margin-bottom: 0.4375rem; }
.faq-cat-card span { display: block; font-size: 0.8rem; font-weight: 600; }
.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 0.5rem;
  background: var(--white);
  overflow: hidden;
}
.faq-question {
  padding: 0.8125rem 1rem;
  font-weight: 600;
  font-size: 0.875rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: background var(--transition);
  -webkit-tap-highlight-color: transparent;
}
.faq-question:hover { background: #f8fbff; }
.faq-question i { color: var(--text-muted); transition: transform var(--transition); flex-shrink: 0; margin-left: 0.5rem; }
.faq-answer {
  display: none;
  padding: 0 1rem 0.8125rem;
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.7;
  border-top: 1px solid var(--border);
}
.faq-item.open .faq-answer { display: block; padding-top: 0.8125rem; }
.faq-item.open .faq-question i { transform: rotate(180deg); }

/* ============================================================
   CHARTS
   ============================================================ */
.chart-bar-wrap { display: flex; align-items: flex-end; gap: 0.375rem; height: 11.25rem; padding: 0 0.25rem; width: 100%; overflow-x: auto; }
.chart-bar-item { flex: 1; display: flex; flex-direction: column; align-items: center; gap: 0.25rem; min-width: 1.25rem; }
.chart-bar {
  width: 100%;
  border-radius: 0.3125rem 0.3125rem 0 0;
  background: linear-gradient(180deg, var(--teal), var(--teal-dark));
  min-height: 0.25rem;
  transition: height .5s ease;
  cursor: pointer;
}
.chart-bar:hover { background: linear-gradient(180deg, var(--accent), var(--teal)); }
.chart-bar-label { font-size: 0.625rem; color: var(--text-muted); white-space: nowrap; }
.chart-bar-value { font-size: 0.6875rem; font-weight: 700; color: var(--text-main); }

/* ============================================================
   PAGINATION
   ============================================================ */
.pagination { display: flex; align-items: center; gap: 0.3125rem; justify-content: flex-end; margin-top: 0.875rem; flex-wrap: wrap; }
.page-btn {
  width: 2rem;
  height: 2rem;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 600;
  border: 0.09375rem solid var(--border);
  color: var(--text-muted);
  background: var(--white);
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  -webkit-tap-highlight-color: transparent;
}
.page-btn:hover, .page-btn.active { background: var(--navy); color: var(--white); border-color: var(--navy); }

/* ============================================================
   EMPTY STATE
   ============================================================ */
.empty-state { text-align: center; padding: 3.125rem 1.25rem; color: var(--text-muted); }
.empty-state i { font-size: 2.8rem; color: var(--border); margin-bottom: 0.875rem; }
.empty-state h3 { font-size: 0.9375rem; margin-bottom: 0.3125rem; color: var(--text-main); }
.empty-state p  { font-size: 0.84rem; }

/* ============================================================
   TICKET NUMBER
   ============================================================ */
.ticket-num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  color: var(--teal-dark);
  font-weight: 500;
}

/* ============================================================
   MODAL
   ============================================================ */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(13,27,42,.55);
  -webkit-backdrop-filter: blur(0.25rem);
  backdrop-filter: blur(0.25rem);
  z-index: 300;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}
.modal-overlay.open { display: flex; }
.modal-box {
  background: var(--white);
  border-radius: var(--radius);
  padding: 1.75rem;
  width: 100%;
  max-width: 28.75rem;
  box-shadow: var(--shadow-lg);
  animation: fadeUp .25s ease;
}
.modal-title { font-weight: 700; font-size: 0.9375rem; margin-bottom: 1rem; }
.modal-actions { display: flex; gap: 0.625rem; justify-content: flex-end; margin-top: 1.25rem; flex-wrap: wrap; }

/* ============================================================
   GRID HELPERS
   ============================================================ */
.ticket-detail-grid { display: grid; grid-template-columns: 1fr; gap: 1.25rem; align-items: start; }
.ticket-detail-top { display: grid; grid-template-columns: 1fr; gap: 1.25rem; align-items: start; }
.ticket-detail-top.has-actions { grid-template-columns: 22rem 1fr; }
.ticket-top-actions { display: flex; flex-direction: column; gap: 1.125rem; }
.ticket-top-info { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.125rem; }
.ticket-top-info .info-wide { grid-column: 1 / -1; }
.ticket-top-info > .card { min-width: 0; }

.ticket-sticky-bar {
    position: sticky;
    top: 4.5rem;
    z-index: 4;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 0.6rem 0.8rem;
    display: flex;
    gap: 0.75rem;
    align-items: center;
    flex-wrap: wrap;
    box-shadow: var(--shadow-sm);
    transition: transform 0.2s ease, opacity 0.2s ease;
    will-change: transform;
}
.ticket-sticky-bar.is-hidden {
    transform: translateY(-130%);
    opacity: 0;
}
.ticket-sticky-bar .sticky-left { display: flex; flex-direction: column; min-width: 10rem; }
.ticket-sticky-bar .sticky-subject { font-size: 0.78rem; color: var(--text-muted); }
.ticket-sticky-bar .sticky-badges { display: flex; gap: 0.4rem; flex-wrap: wrap; align-items: center; }
.ticket-sticky-bar .sticky-right { margin-left: auto; display: flex; align-items: center; gap: 0.5rem; flex-wrap: wrap; }
.ticket-sticky-bar .sticky-status { display: flex; align-items: center; gap: 0.4rem; }
.ticket-sticky-bar .sticky-status .form-control { height: 2rem; padding: 0.2rem 0.5rem; font-size: 0.75rem; }
.ticket-sticky-bar .sticky-actions { display: flex; gap: 0.4rem; }

/* Ticket Dashboard */
.ticket-board { display: flex; flex-direction: column; gap: 1.25rem; }
.ticket-hero { display: flex; align-items: center; justify-content: space-between; gap: 1rem; background: #fff; border: 1px solid var(--border); border-radius: var(--radius-md); padding: 1rem 1.25rem; box-shadow: var(--shadow-sm); }
.ticket-hello { font-weight: 700; font-size: 1rem; }
.ticket-sub { font-size: 0.82rem; color: var(--text-muted); margin-top: 0.15rem; }
.ticket-pill { background: var(--teal-glow); color: var(--teal-dark); padding: 0.35rem 0.75rem; border-radius: 999px; font-size: 0.75rem; font-weight: 600; }
.ticket-stats-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1rem; }
.ticket-stat { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-md); padding: 0.9rem 1rem; box-shadow: var(--shadow-sm); }
.ticket-stat .stat-label { font-size: 0.7rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.04em; }
.ticket-stat .stat-value { font-size: 1.4rem; font-weight: 800; margin-top: 0.2rem; color: var(--text-main); }

.ticket-filter-bar { display: grid; grid-template-columns: 2fr 1fr 1fr auto; gap: 0.75rem; align-items: end; background: #fff; border: 1px solid var(--border); border-radius: var(--radius-md); padding: 0.9rem 1rem; box-shadow: var(--shadow-sm); }
.ticket-filter-bar .filter-group label { display: block; font-size: 0.72rem; color: var(--text-muted); margin-bottom: 0.35rem; }
.ticket-filter-bar .filter-actions { display: flex; gap: 0.5rem; justify-content: flex-end; }
.ticket-table-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-md); box-shadow: var(--shadow-sm); }
.ticket-list thead th { font-size: 0.7rem; color: var(--text-muted); letter-spacing: 0.04em; text-transform: uppercase; padding: 0.75rem 1rem; }
.ticket-list tbody td { padding: 0.9rem 1rem; vertical-align: middle; }
.ticket-row { background: #fff; }
.ticket-row:hover { background: #f8fafc; }
.ticket-title { display: flex; flex-direction: column; gap: 0.25rem; }
.ticket-title .ticket-num { font-size: 0.72rem; color: var(--text-muted); font-weight: 600; }
.ticket-subject { font-weight: 600; color: var(--text-main); text-decoration: none; white-space: normal; line-height: 1.3; }
.ticket-subject:hover { text-decoration: underline; }
.ticket-sla { margin-top: 0.15rem; }
.ticket-details-table td { word-break: break-word; }
.admin-two-col      { display: grid; grid-template-columns: 1fr 20rem; gap: 1.25rem; align-items: start; }
.profile-grid       { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; max-width: 56.25rem; }
.reports-two-col    { display: grid; grid-template-columns: 2fr 1fr; gap: 1.25rem; margin-bottom: 1.25rem; }
.reports-equal      { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; margin-bottom: 1.25rem; }

@media (max-width: 50rem) {
  .ticket-detail-grid,
  .ticket-detail-top,
  .admin-two-col,
  .profile-grid,
  .reports-two-col,
  .reports-equal { grid-template-columns: 1fr; }
  .ticket-top-info { grid-template-columns: 1fr; }
  .ticket-sticky-bar { top: 0.75rem; }
  .ticket-hero { flex-direction: column; align-items: flex-start; }
  .ticket-stats-grid { grid-template-columns: 1fr 1fr; }
  .ticket-filter-bar { grid-template-columns: 1fr; }
  .ticket-filter-bar .filter-actions { justify-content: flex-start; }
}

/* ============================================================
   ANIMATIONS
   ============================================================ */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(1rem); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes slideIn {
  from { opacity: 0; transform: translateX(-0.75rem); }
  to   { opacity: 1; transform: translateX(0); }
}
@keyframes bellShake {
  0%,100%{transform:rotate(0)}
  20%{transform:rotate(-15deg)}
  40%{transform:rotate(15deg)}
  60%{transform:rotate(-10deg)}
  80%{transform:rotate(10deg)}
}
.fade-in { animation: fadeUp .4s ease; }

/* ============================================================
   ROLE COLOURS
   ============================================================ */
.role-admin   .sidebar-brand { border-bottom-color: rgba(231,76,60,.3); }
.role-hod     .sidebar-brand { border-bottom-color: rgba(142,68,173,.3); }
.role-staff   .sidebar-brand { border-bottom-color: rgba(0,201,167,.2); }
.role-student .sidebar-brand { border-bottom-color: rgba(41,128,185,.2); }

/* ============================================================
   MOBILE — small screens (max 600px)
   ============================================================ */
@media (max-width: 37.5rem) {
  .stats-grid   { grid-template-columns: 1fr 1fr; gap: 0.625rem; }
  .stat-value   { font-size: 1.4rem; }
  .stat-card    { padding: 0.875rem; gap: 0.625rem; }
  .faq-cats     { grid-template-columns: repeat(2, 1fr); }
  .hide-mobile  { display: none !important; }
  .btn          { padding: 0.5rem 0.8125rem; font-size: 0.8rem; }
  .card-header  { padding: 0.8125rem 0.9375rem; }
  .card-body    { padding: 0.9375rem; }
  table         { min-width: 26.25rem; }
}

/* ============================================================
   SCROLLBARS
   ============================================================ */
::-webkit-scrollbar       { width: 0.375rem; height: 0.375rem; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 0.375rem; }
::-webkit-scrollbar-thumb:hover { background: var(--text-light); }

/* ============================================================
   MOBILE RESPONSIVE FIXES — Full-width stacked layout
   ============================================================ */

@media (max-width: 48rem) {

  /* --- Page padding ---------------------------------------- */
  .page-content {
    padding: 0.75rem 0.625rem;
  }

  /* --- Stats grid: 1 column, full width ------------------- */
  .stats-grid {
    grid-template-columns: 1fr;
    gap: 0.625rem;
    margin-bottom: 1rem;
  }

  .stat-card {
    width: 100%;
    padding: 1rem 1.125rem;
  }

  /* --- Dashboard grid: single column ---------------------- */
  .dashboard-grid {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }

  /* --- Cards: full width, proper spacing ------------------ */
  .card {
    width: 100%;
    margin-bottom: 0.75rem;
    border-radius: 0.5rem;
  }

  .card-header {
    padding: 0.75rem 1rem;
    flex-wrap: wrap;
    gap: 0.5rem;
  }

  .card-body {
    padding: 0.875rem;
  }

  /* --- Tables: horizontal scroll on mobile ---------------- */
  .table-responsive {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    width: 100%;
  }

  table {
    min-width: 36rem;
  }

  thead th,
  tbody td {
    padding: 0.5rem 0.625rem;
    font-size: 0.8rem;
    white-space: nowrap;
  }

  /* --- Form rows: single column --------------------------- */
  .form-row {
    grid-template-columns: 1fr;
    gap: 0;
  }

  /* --- Topbar: compact ------------------------------------ */
  .topbar {
    padding: 0 0.75rem;
    gap: 0.5rem;
  }

  .topbar-title {
    font-size: 0.9rem;
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .topbar-actions {
    gap: 0.375rem;
  }

  /* Hide quick-action dropdown on very small screens */
  .topbar-actions select {
    display: none;
  }

  /* --- Sidebar nav sub-items ------------------------------ */
  .nav-sub { display: none; }

  /* --- Buttons: full width on mobile in forms ------------- */
  .btn-block {
    width: 100%;
    justify-content: center;
  }

  /* --- Profile grid: single column ----------------------- */
  div[style*="grid-template-columns:1fr 1fr"] {
    display: flex !important;
    flex-direction: column !important;
    gap: 0.75rem !important;
  }

  /* --- Reports/admin grids ------------------------------- */
  div[style*="grid-template-columns:1fr 360px"],
  div[style*="grid-template-columns:1fr 1fr"] {
    display: flex !important;
    flex-direction: column !important;
    gap: 0.75rem !important;
  }

  /* --- Ticket thread bubbles ----------------------------- */
  .thread-msg {
    gap: 0.5rem;
  }

  .thread-avatar {
    width: 1.75rem;
    height: 1.75rem;
    font-size: 0.7rem;
    flex-shrink: 0;
  }

  /* --- Empty state spacing ------------------------------- */
  .empty-state {
    padding: 2rem 1rem;
  }

  /* --- FAQ items ----------------------------------------- */
  .faq-cats {
    gap: 0.5rem;
  }

  .faq-cat-card {
    padding: 0.6rem 0.875rem;
    font-size: 0.82rem;
  }

  /* --- Chart bars: shorter on mobile -------------------- */
  .chart-bar-wrap {
    gap: 0.25rem;
  }

  /* --- Inline style grids on dashboard ------------------ */
  .stats-grid + div,
  .dashboard-grid > div {
    width: 100%;
  }
}

/* Extra small phones (< 400px) */
@media (max-width: 25rem) {

  .page-content {
    padding: 0.5rem 0.5rem;
  }

  .card-header {
    padding: 0.625rem 0.75rem;
  }

  .card-body {
    padding: 0.625rem 0.75rem;
  }

  .stat-card {
    padding: 0.875rem 1rem;
  }

  .stat-value {
    font-size: 1.5rem;
  }

  .btn {
    padding: 0.5rem 0.875rem;
    font-size: 0.8rem;
  }

  .topbar {
    height: 3.25rem;
  }

  .topbar-title {
    font-size: 0.82rem;
  }
}