:root {
  --gdk:  #0f0f10;   /* near-black — headings, dark surfaces */
  --gmd:  #27272a;   /* dark gray  — secondary dark surfaces */
  --gbs:  #18181b;   /* black      — primary buttons / accents */
  --gst:  #52525b;   /* mid gray   — hover accents, highlights */
  --gpl:  #f1f1f3;   /* pale gray  — pill / chip backgrounds */
  --gbg:  #eeeef0;   /* page background — slightly darker so white boxes stand out */
  --bdr:  #e3e3e6;   /* border gray */
  --txt:  #18181b;   /* body text */
  --mut:  #6b6b70;   /* muted text */
  --wht:  #ffffff;
  --gld:  #b8860b;   /* single warm accent, used sparingly */
  --red:  #dc3545;
  --sw:   255px;
  --font-serif: 'Outfit', sans-serif;
  --font-sans:  'Outfit', sans-serif;
  --font-mono:  'JetBrains Mono', monospace;
  --radius-surface: 6px;
  --radius-control: 4px;
  --nav-green: #185f37;
  --nav-green-dark: #104a2a;
  --nav-green-active: #2c744a;
  --nav-mint: #bcefcf;
  --row-hover: #f7f7f8;
}

/* ── RESET / BASE ─────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }
html, body {
  height: 100%;
  font-family: var(--font-sans);
  background: var(--gbg);
  color: var(--txt);
  overflow-x: hidden;
}

/* ─────────────────────────────────────────────────────── */
/*  AUTH PAGE                                             */
/* ─────────────────────────────────────────────────────── */
#auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--nav-green-dark) 0%, var(--nav-green) 100%);
  position: relative;
  overflow: hidden;
}
#auth-page::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at 20% 80%, rgba(255,255,255,.10) 0%, transparent 55%),
                    radial-gradient(circle at 80% 20%, rgba(255,255,255,.06) 0%, transparent 50%);
}

.auth-card {
  background: #fff;
  border-radius: var(--radius-surface);
  padding: 1.35rem 2.25rem 2rem;
  width: 100%;
  max-width: 420px;
  border: 1px solid rgba(255,255,255,.45);
  box-shadow: 0 20px 60px rgba(16,74,42,.35);
  position: relative;
  z-index: 1;
}

/* Logos row */
.auth-logos {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-bottom: .3rem;
}
.auth-logos img {
  width: 48px;
  height: 48px;
  object-fit: contain;
  border-radius: 50%;
  background: white;
}
.auth-logos-divider {
  width: 1px;
  height: 36px;
  background: rgba(24,95,55,.22);
}

.auth-app-brand {
  text-align: center;
  margin-bottom: 0.25rem;
}
.auth-app-brand .brand-name {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--nav-green-dark);
  letter-spacing: -0.02em;
}
.auth-sub {
  text-align: center;
  font-size: .64rem;
  color: var(--mut);
  letter-spacing: .08em;
  text-transform: uppercase;
  margin-bottom: 1.1rem;
}

/* Tabs */
.auth-tabs {
  display: flex;
  border: none;
  border-radius: var(--radius-control);
  overflow: hidden;
  margin-bottom: 1.4rem;
}
.auth-tab {
  flex: 1;
  padding: 9px;
  text-align: center;
  cursor: pointer;
  font-size: .85rem;
  font-weight: 500;
  color: var(--mut);
  transition: all .18s;
  background: #fff;
  border: none;
}
.auth-tab.active {
  background: var(--nav-green);
  color: white;
  font-weight: 400;
}
.auth-tab:hover:not(.active) { background: rgba(188,239,207,.35); color: var(--nav-green); }

/* Form controls */
.form-label-custom {
  display: block;
  font-size: .72rem;
  font-weight: 600;
  color: var(--nav-green-dark);
  letter-spacing: .04em;
  text-transform: uppercase;
  margin-bottom: 5px;
}
.form-control-custom,
.form-select-custom {
  width: 100%;
  padding: 8px 11px;
  border: 1px solid #c7ceca;
  border-radius: 8px;
  font-family: var(--font-sans);
  font-size: .9rem;
  color: var(--txt);
  background: #fff;
  outline: none;
  transition: border-color .2s, box-shadow .2s;
}
.form-control-custom:focus,
.form-select-custom:focus {
  border-color: var(--nav-green);
  box-shadow: 0 0 0 3px rgba(24,95,55,.12);
}

.btn-auth {
  width: 100%;
  padding: 9px;
  border: none;
  border-radius: var(--radius-control);
  background: var(--nav-green);
  color: #fff;
  font-weight: 400;
  font-size: .95rem;
  font-family: var(--font-sans);
  cursor: pointer;
  transition: background .2s, transform .1s;
  margin-top: .25rem;
}
.btn-auth:hover { background: var(--nav-green-dark); transform: translateY(-1px); }
.btn-auth:active { transform: translateY(0); }

.guest-link {
  text-align: center;
  margin-top: 1rem;
  font-size: .82rem;
  color: var(--mut);
}
.guest-link a {
  display: inline-block;
  padding: 4px 9px;
  border-radius: var(--radius-control);
  background: var(--nav-green);
  color: white;
  font-weight: 600;
  text-decoration: none;
}
.guest-link a:hover { background: var(--nav-green-dark); color: white; text-decoration: none; }

#login-form .guest-link a {
  padding: 0;
  border-radius: 0;
  background: transparent;
  color: var(--nav-green);
}

#login-form .guest-link a:hover {
  background: transparent;
  color: var(--nav-green-dark);
  text-decoration: underline;
}

/* Error/success messages */
.auth-alert {
  display: none;
  padding: 8px 12px;
  border-radius: 8px;
  font-size: .82rem;
  margin-bottom: .85rem;
}
.auth-alert.error { background: #fff5f5; border: 1px solid #fcc; color: #c53030; }
.auth-alert.success { background: var(--gpl); border: 1px solid var(--bdr); color: var(--gmd); }

/* ─────────────────────────────────────────────────────── */
/*  APP SHELL                                             */
/* ─────────────────────────────────────────────────────── */
#app {
  display: none;
  height: 100vh;
  flex-direction: row;
}

/* ── SIDEBAR ──────────────────────────────────────────── */
.sidebar {
  width: var(--sw);
  flex-shrink: 0;
  background: linear-gradient(180deg, var(--nav-green-dark) 0%, var(--nav-green) 100%);
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: rgba(255,255,255,.15) transparent;
  transition: transform .3s ease;
  z-index: 200;
}
.sb-hd {
  padding: .85rem 1rem;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.sb-logos {
  display: none;
}
.sb-brand {
  display: flex;
  align-items: center;
  gap: 9px;
}
.sb-icon {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--wht) url('/assets/Isu_logo.jpg') center / contain no-repeat;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-weight: 800;
  color: var(--nav-green);
  font-size: 0;
  overflow: hidden;
  flex-shrink: 0;
}
.sb-title { font-family: var(--font-serif); font-weight: 800; color: white; font-size: 1.05rem; letter-spacing: -.01em; }
.sb-clg { font-size: .6rem; color: rgba(255,255,255,.38); letter-spacing: .05em; text-transform: uppercase; margin-top: 1px; }

.sb-user {
  margin: .85rem 1rem;
  padding: .8rem;
  background: rgba(255,255,255,.07);
  border-radius: var(--radius-control);
}
.sb-name { font-weight: 600; font-size: .88rem; color: white; }
.sb-email { font-size: .69rem; color: rgba(255,255,255,.38); margin-top: 2px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.role-badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 100px;
  font-size: .65rem;
  font-weight: 600;
  margin-top: 5px;
}
.rb-admin   { background: var(--nav-mint); color: var(--nav-green-dark); }
.rb-adviser { background: var(--nav-mint); color: var(--nav-green-dark); }
.rb-student { background: var(--nav-mint); color: var(--nav-green-dark); }
.rb-guest   { background: rgba(184,134,11,.22);  color: #e8b64a; }

.sb-nav { flex: 1; padding: .4rem 0; }
.nav-label {
  font-size: .6rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: rgba(255,255,255,.27);
  padding: .7rem 1.3rem .3rem;
}
.nav-item {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 9px 1rem;
  cursor: pointer;
  font-size: .85rem;
  font-weight: 500;
  color: rgba(255,255,255,.55);
  transition: all .16s;
  border-left: 3px solid transparent;
  margin: 1px 0;
  user-select: none;
}
.sb-nav a.nav-item { text-decoration: none; }
.nav-item:hover { background: rgba(255,255,255,.10); color: #fff; }
.nav-item.active { background: var(--nav-green-active); color: white; border-left-color: var(--nav-mint); }
.nav-item .ni-icon { font-size: .95rem; width: 20px; text-align: center; flex-shrink: 0; }

.sb-footer { padding: .85rem 1rem; border-top: 1px solid rgba(255,255,255,.07); }
.btn-logout {
  width: 100%;
  padding: 8px;
  border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--radius-control);
  background: transparent;
  color: rgba(255,255,255,.45);
  font-family: var(--font-sans);
  font-size: .82rem;
  cursor: pointer;
  transition: all .18s;
}
.btn-logout:hover { background: rgba(255,255,255,.10); color: #fff; border-color: var(--nav-mint); }

/* Hamburger (mobile) */
#menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1.3rem;
  color: var(--gdk);
  padding: 4px 6px;
  border-radius: var(--radius-control);
  transition: background .15s;
}
#menu-toggle:hover { background: var(--gpl); }
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.45);
  z-index: 199;
}

/* ── MAIN AREA ────────────────────────────────────────── */
.main-content {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  min-width: 0;
}
.topbar {
  height: 54px;
  flex-shrink: 0;
  background: white;
  border-bottom: 1px solid var(--bdr);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.5rem;
  position: sticky;
  top: 0;
  z-index: 5;
  box-shadow: 0 1px 4px rgba(0,0,0,.05);
}
.tb-title { font-family: var(--font-serif); font-size: 1.08rem; font-weight: 700; color: var(--nav-green-dark); }
.tb-right { display: flex; align-items: center; gap: .85rem; }
.profile-initial {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  flex: 0 0 34px;
  border-radius: 50%;
  background: var(--nav-green);
  color: #fff;
  font-size: 1rem;
  font-weight: 500;
  line-height: 1;
}
.profile-initial[hidden] { display: none; }
.repository-profile { display: flex; align-items: center; justify-content: flex-end; gap: .65rem; min-width: 0; }
@media (max-width: 768px) {
  .repository-profile { gap: .35rem; }
}
.notif-btn {
  width: 33px;
  height: 33px;
  border-radius: 50%;
  background: var(--nav-mint);
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: .9rem;
  position: relative;
  color: var(--nav-green-dark);
}
.notif-dot {
  position: absolute;
  top: 6px; right: 7px;
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--nav-green);
  border: 1.5px solid white;
}

/* ── PAGES ────────────────────────────────────────────── */
.page { display: none; padding: 1.4rem; flex: 1; }
.page.active { display: block; }

/* Let content surfaces use the space below the topbar without fixing their height. */
@media screen {
  #app { height: 100dvh; }
  #app .main-content { min-height: 0; }
  #app .main-content > .page.active {
    display: flex;
    flex-direction: column;
    flex: 1 0 auto;
    width: 100%;
    max-width: none;
    margin-inline: 0;
    padding-inline: clamp(.5rem, 1%, .75rem);
  }
  #app .page > :is(.card-box, .dash-grid, .scanner-layout, .thesis-grid, .stats-row) {
    width: 100%;
    max-width: none;
    margin-inline: 0;
  }
  #app .page .card-box > :is(.card-header-row, .card-body-pad, .request-list-heading, .dashboard-filter-wrap) {
    padding-inline: clamp(.5rem, 1%, .75rem);
  }
  #app .page > :is(.registered-users-card, .report-output) {
    padding-inline: clamp(.5rem, 1%, .75rem);
  }
  #app .page > .registered-users-card > .card-header-row { padding-inline: 0; }
  #app .page > .card-box {
    flex: 1 0 auto;
    min-width: 0;
    display: flex;
    flex-direction: column;
  }
  #app .page > .report-controls-card { flex: 0 0 auto; display: grid; }
  #app .page > .card-box > :is(.card-body-pad, .request-table-wrap, .registered-users-table-wrap, .report-table-wrap, #repo-grid) {
    flex: 1 0 auto;
  }
  #app .page > .card-box > :is(.card-body-pad, .request-table-wrap, .registered-users-table-wrap, .report-table-wrap, #repo-grid):has(.empty-state, td[colspan]:only-child) {
    display: flex;
    flex-direction: column;
  }
  #app .page .card-body-pad > :is(.act-list, .table-responsive):has(.empty-state, td[colspan]:only-child) {
    display: flex;
    flex-direction: column;
    flex: 1 0 auto;
  }
  #app .page .card-box .empty-state {
    flex: 1 0 auto;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
  }
  #app .page :is(.dash-grid, .scanner-layout) { flex: 1 0 auto; align-items: stretch; }
  #app .page :is(.dash-grid, .scanner-layout) > .card-box { align-self: stretch; }
  #app .page > .thesis-grid { flex: 1 0 auto; align-content: start; }
  #app .page > .thesis-grid:has(> .empty-state:only-child) { align-content: stretch; }

  /* Expand only empty tables; populated rows retain their normal height. */
  #app .page table:has(> tbody > tr:only-child > td[colspan]:only-child) {
    flex: 1 0 auto;
    display: flex;
    flex-direction: column;
  }
  #app .page table:has(> tbody > tr:only-child > td[colspan]:only-child) > thead {
    display: table;
    table-layout: fixed;
    width: 100%;
  }
  #app .page table:has(> tbody > tr:only-child > td[colspan]:only-child) > tbody,
  #app .page tbody:has(> tr:only-child > td[colspan]:only-child) > tr {
    display: flex;
    flex: 1 0 auto;
  }
  #app .page tbody > tr:only-child > td[colspan]:only-child {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    flex: 1 0 auto;
    width: 100% !important;
    height: auto;
    min-height: 170px;
  }
}
.page-title { font-family: var(--font-serif); font-size: 1.55rem; font-weight: 800; letter-spacing: -.02em; color: var(--gdk); margin-bottom: .3rem; }
.page-sub { font-size: .86rem; color: var(--mut); margin-bottom: 1.25rem; }

/* ── DASHBOARD ────────────────────────────────────────── */
.stats-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: .85rem; margin-bottom: 1.4rem; }
.stat-card {
  background: white;
  border: 1px solid var(--bdr);
  border-radius: var(--radius-surface);
  padding: .8rem .95rem;
  position: relative;
  overflow: hidden;
  transition: transform .2s, box-shadow .2s;
}
.stat-card:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(0,0,0,.08); }
.stat-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; }
.stat-card:nth-child(1)::before { background: var(--gbs); }
.stat-card:nth-child(2)::before { background: var(--gst); }
.stat-card:nth-child(3)::before { background: var(--gmd); }
.stat-card:nth-child(4)::before { background: var(--gld); }
.stat-label { font-size: .73rem; font-weight: 600; color: var(--mut); text-transform: uppercase; letter-spacing: .05em; }
.stat-num { font-family: var(--font-serif); font-size: 2rem; font-weight: 700; color: var(--gdk); line-height: 1; margin: 5px 0 4px; }
.stat-change { font-size: .74rem; color: var(--gbs); font-weight: 500; }
.stat-icon { position: absolute; right: 1.1rem; top: 1.1rem; font-size: 1.6rem; opacity: .12; }

.adviser-dashboard-page {
  width: 100%;
  max-width: none;
  margin: 0;
  padding-top: 1.25rem;
}
.adviser-dashboard-page .stats-row {
  grid-template-columns: repeat(3, minmax(205px, 1fr));
  gap: .9rem;
  width: 100%;
  max-width: none;
  margin: 0 0 1.25rem;
}
.adviser-dashboard-page .stat-card {
  min-height: 88px;
  padding: .7rem .85rem;
  background: linear-gradient(145deg, var(--nav-green-dark), var(--nav-green));
  border: none;
  box-shadow: 0 5px 14px rgba(16,74,42,.2);
}
.adviser-dashboard-page .stat-card::before { display: none; }
.adviser-dashboard-page .stat-label,
.adviser-dashboard-page .stat-num,
.adviser-dashboard-page .stat-change,
.adviser-dashboard-page .stat-icon { color: white; }
.adviser-dashboard-page .stat-label,
.adviser-dashboard-page .stat-change { opacity: .88; }
.adviser-dashboard-page .stat-icon { font-size: 1.4rem; opacity: .2; }
.adviser-dashboard-page .stat-num { font-size: 1.8rem; }
.adviser-dashboard-page .stat-card:hover { box-shadow: 0 8px 22px rgba(16,74,42,.28); }

.adviser-dashboard-page .dash-grid {
  width: 100%;
  max-width: none;
  margin: 0;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: .9rem;
  align-items: start;
}
.adviser-dashboard-page .dash-grid > .card-box {
  align-self: start;
  height: auto;
}
.adviser-dashboard-page .dash-grid > .card-box:first-child {
  grid-column: span 2;
}

@media (max-width: 900px) {
  .adviser-dashboard-page .stats-row { grid-template-columns: repeat(2, minmax(190px, 1fr)); max-width: none; }
  .adviser-dashboard-page .dash-grid {
    grid-template-columns: 1fr;
    max-width: none;
  }
  .adviser-dashboard-page .dash-grid > .card-box:first-child { grid-column: auto; }
}
@media (max-width: 560px) {
  .adviser-dashboard-page .stats-row { grid-template-columns: 1fr; max-width: none; }
  .adviser-dashboard-page .stat-card { min-height: 86px; }
  .adviser-dashboard-page .dash-grid { max-width: none; }
}

.dash-grid { display: grid; grid-template-columns: 2fr 1fr; gap: 1rem; }
.card-box { background: white; border: none; border-radius: var(--radius-surface); overflow: visible; }
.card-header-row {
  padding: .75rem .95rem;
  border-bottom: 1px solid var(--bdr);
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-radius: var(--radius-surface) var(--radius-surface) 0 0;
}
.card-title-text { font-family: var(--font-serif); font-weight: 700; font-size: .95rem; color: var(--gdk); }
.card-body-pad { padding: .8rem; }

/* ── TABLES ───────────────────────────────────────────── */
.title-sort-control { display: inline-flex; align-items: center; flex-wrap: wrap; gap: 8px; color: var(--mut); font-size: .76rem; }
.title-sort-dropdown { position: relative; flex: 1; min-width: 0; color: var(--txt); }
.title-sort-dropdown summary { display: flex; align-items: center; justify-content: space-between; gap: 8px; height: 32px; padding: 0 10px; border: 1px solid var(--bdr); border-radius: var(--radius-control); background: var(--gbg); font: 500 .76rem var(--font-sans); list-style: none; cursor: pointer; white-space: nowrap; transition: background .15s, color .15s; }
.title-sort-dropdown summary::-webkit-details-marker { display: none; }
.title-sort-dropdown summary:hover, .title-sort-dropdown[open] summary { background: #f8f8fa; color: var(--txt); box-shadow: 0 0 0 2px rgba(24,95,55,.12); }
.title-sort-dropdown summary:focus-visible { outline: 2px solid var(--nav-green); outline-offset: 2px; }
.title-sort-options { position: absolute; top: calc(100% + 5px); right: 0; min-width: 100%; width: max-content; padding: 5px; border-radius: var(--radius-surface); background: white; box-shadow: 0 8px 22px #0002; z-index: 220; }
.title-sort-options button { display: block; width: 100%; border: 0; background: transparent; color: var(--txt); text-align: left; white-space: nowrap; }
.title-sort-options button:hover, .title-sort-options button:focus-visible, .title-sort-options button[aria-pressed="true"] { background: var(--nav-mint); color: var(--nav-green-dark); }
.advisee-repository-card:has(.title-sort-dropdown[open]) { overflow: visible; }
.title-sort-control select { min-height: 34px; padding: 6px 10px; border: 1px solid var(--bdr); border-radius: var(--radius-control); background: white; color: var(--txt); font: .78rem var(--font-sans); }
.dashboard-filter-menu > .title-sort-control { margin-top: 12px; }
.advisee-filter-controls { flex-wrap: wrap; }
.data-table { width: 100%; border-collapse: collapse; }
.table-empty-content { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 8px; min-height: 180px; padding: 24px 16px; color: var(--mut); text-align: center; }
.table-empty-content > i { font-size: 1.6rem; opacity: .65; }
.table-empty-content > strong { font-size: .82rem; font-weight: 500; }
.table-empty-content > span { font-size: .75rem; }
.data-table .table-empty-row:hover td { background: transparent; cursor: default; }
.data-table th {
  text-align: left;
  font-size: .69rem;
  font-weight: 600;
  color: var(--mut);
  text-transform: uppercase;
  letter-spacing: .05em;
  padding: .65rem .7rem .65rem;
  border-bottom: 1px solid var(--bdr);

}
.data-table td {
  padding: .75rem .7rem;
  font-size: .86rem;
  border-bottom: none;
  vertical-align: middle;
  transition: background-color .15s ease;
}
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td,
.data-table tr:focus td,
.data-table tr:focus-visible td { background: var(--row-hover); cursor: pointer; }
.td-title { font-weight: 500; color: var(--gdk); max-width: 200px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* ── CHIPS ────────────────────────────────────────────── */
.chip { display: inline-block; padding: 3px 11px; border-radius: 100px; font-size: .68rem; font-weight: 700; letter-spacing: .01em; }
.chip-cs { background: #2563eb; color: #ffffff; }
.chip-it { background: #16a34a; color: #ffffff; }
.chip-dsa { background: #f97316; color: #ffffff; }

/* ── ACTIVITY ─────────────────────────────────────────── */
.act-list { display: flex; flex-direction: column; gap: .85rem; }
.act-item { display: flex; gap: 9px; align-items: flex-start; }
.act-dot { width: 7px; height: 7px; border-radius: 50%; margin-top: 5px; flex-shrink: 0; }
.act-dot.g { background: var(--gst); }
.act-dot.b { background: #60a5fa; }
.act-dot.o { background: var(--gld); }
.act-text { font-size: .81rem; color: var(--mut); line-height: 1.4; }
.act-text strong { color: var(--txt); }
.act-time { font-size: .69rem; color: var(--mut); margin-top: 1px; font-family: var(--font-mono); }

/* ── BUTTONS ──────────────────────────────────────────── */
.btn-sm-custom {
  padding: 5px 9px;
  border-radius: var(--radius-control);
  font-size: .75rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  font-family: var(--font-sans);
  transition: all .15s;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.btn-view { background: var(--nav-green); color: var(--wht); }
.btn-view:hover { background: var(--nav-green-dark); }
button.thesis-file-view { display: inline-flex; align-items: center; gap: 6px; flex-shrink: 0; border: 0; background: transparent; color: var(--nav-green); font-family: var(--font-sans); font-weight: 700 !important; white-space: nowrap; box-shadow: none; }
button.thesis-file-view:hover, button.thesis-file-view:active, button.thesis-file-view:focus { background: transparent; color: var(--nav-green-dark); text-decoration: none; }
button.thesis-file-view:focus-visible { outline: 2px solid var(--nav-green); outline-offset: 2px; }
.btn-qr { background: white; color: var(--gbs); border: 1px solid var(--bdr); }
.btn-qr:hover { background: var(--gpl); }
.btn-primary-custom {
  padding: 8px 16px;
  border: none;
  border-radius: var(--radius-control);
  background: var(--nav-green);
  color: white;
  font-weight: 600;
  font-size: .88rem;
  font-family: var(--font-sans);
  cursor: pointer;
  transition: background .2s, transform .1s;
}
.btn-primary-custom:hover { background: var(--nav-green-dark); transform: translateY(-1px); }
.btn-danger-sm {
  padding: 4px 8px;
  border: 1px solid rgba(220,53,69,.25);
  border-radius: var(--radius-control);
  background: rgba(220,53,69,.06);
  color: var(--red);
  font-family: var(--font-sans);
  font-size: .75rem;
  font-weight: 600;
  cursor: pointer;
  transition: all .15s;
}
.btn-danger-sm:hover { background: rgba(220,53,69,.12); }
.btn-edit-sm {
  padding: 4px 8px;
  border: 1px solid var(--bdr);
  border-radius: var(--radius-control);
  background: white;
  color: var(--gmd);
  font-family: var(--font-sans);
  font-size: .75rem;
  font-weight: 600;
  cursor: pointer;
  transition: all .15s;
}
.btn-edit-sm:hover { background: var(--gpl); }

/* ── MODAL ────────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(10,10,12,.65);
  backdrop-filter: blur(4px);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}
.modal-overlay.open { display: flex; }
.modal-box {
  background: white;
  border-radius: var(--radius-surface);
  max-width: 640px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 24px 60px rgba(0,0,0,.25);
  animation: modalIn .22s ease;
}
@keyframes modalIn {
  from { opacity: 0; transform: scale(.95) translateY(12px); }
  to   { opacity: 1; transform: none; }
}
.modal-header {
  padding: 1.3rem 1.55rem 1rem;
  border-bottom: 1px solid var(--bdr);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  position: sticky;
  top: 0;
  background: white;
  z-index: 1;
  border-radius: var(--radius-surface) var(--radius-surface) 0 0;
}
.modal-title-text { font-family: var(--font-serif); font-size: 1.1rem; font-weight: 700; color: var(--gdk); flex: 1; margin-right: 1rem; line-height: 1.35; }
.modal-close {
  background: var(--gpl);
  border: 1px solid var(--bdr);
  border-radius: var(--radius-control);
  width: 30px; height: 30px;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  font-size: .9rem;
  flex-shrink: 0;
  transition: background .15s;
}
.modal-close:hover { background: #e4e4e7; }
.modal-body { padding: 1.3rem 1.55rem; }
.meta-row { display: flex; flex-wrap: wrap; gap: .35rem 1.2rem; margin-bottom: 1rem; }
.meta-item { font-size: .8rem; color: var(--mut); }
.meta-item strong { color: var(--gmd); }
.section-divider {
  font-size: .68rem;
  font-weight: 700;
  color: var(--mut);
  letter-spacing: .09em;
  text-transform: uppercase;
  border-bottom: 1px solid var(--bdr);
  padding-bottom: .4rem;
  margin: 1rem 0 .6rem;
}
.abstract-text { font-size: .9rem; line-height: 1.72; color: var(--mut); }
.chapter-list { display: flex; flex-direction: column; gap: .5rem; margin-top: .2rem; }
.chapter-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .65rem .9rem;
  background: var(--gbg);
  border: 1px solid var(--bdr);
  border-radius: 8px;
}
.chapter-name { font-size: .85rem; font-weight: 500; color: var(--gdk); }

.viewer-file-card {
  width: 100%;
  min-height: 64px;
  padding: .7rem .85rem !important;
  display: flex;
  align-items: center;
  gap: .75rem;
  border: 1px solid var(--bdr);
  border-radius: var(--radius-control) !important;
  background: var(--wht);
  color: var(--txt);
  text-align: left;
  cursor: pointer;
  transition: background-color .15s ease, border-color .15s ease, box-shadow .15s ease;
}
.viewer-file-card:hover {
  background: var(--row-hover);
  border-color: #d4d4d8;
  box-shadow: 0 3px 10px rgba(0,0,0,.06);
}
.viewer-file-card:focus-visible { outline: 2px solid var(--nav-green); outline-offset: 2px; }
.viewer-file-icon { width: 34px; flex: 0 0 34px; color: var(--nav-green); font-size: 1.35rem; text-align: center; }
.viewer-file-details { display: flex; flex: 1; min-width: 0; flex-direction: column; gap: .15rem; }
.viewer-file-details strong { overflow: hidden; font-size: .86rem; text-overflow: ellipsis; white-space: nowrap; }
.viewer-file-details small { color: var(--mut); font-size: .72rem; }
.viewer-file-action { color: var(--nav-green); font-size: .76rem; font-weight: 700; white-space: nowrap; }
.viewer-file-action i { margin-right: .25rem; }

.thesis-title-link {
  max-width: 100%;
  padding: 0 !important;
  border: 0;
  background: transparent;
  color: inherit;
  font: inherit;
  text-align: left;
  cursor: pointer;
}
.thesis-title-link:hover { color: var(--nav-green); text-decoration: underline; text-underline-offset: 3px; }
.thesis-title-link:focus-visible { outline: 2px solid var(--nav-green); outline-offset: 3px; border-radius: 2px; }

.fv-document-tabs {
  display: flex;
  gap: .35rem;
  padding: 0 20px 12px;
  border-bottom: 1px solid rgba(255,255,255,.08);
  background: var(--gdk);
}
.fv-document-tab {
  min-height: 32px;
  padding: .35rem .75rem !important;
  border: 1px solid rgba(255,255,255,.16);
  border-radius: var(--radius-control) !important;
  background: rgba(255,255,255,.06);
  color: rgba(255,255,255,.68);
  font-size: .78rem !important;
  font-weight: 600;
  cursor: pointer;
}
.fv-document-tab:hover { background: rgba(255,255,255,.12); color: var(--wht); }
.fv-document-tab.active { background: var(--nav-mint); border-color: var(--nav-mint); color: var(--nav-green-dark); }
.fv-pdf-viewer { height: 72vh; min-height: 420px; background: #525659; display: flex; flex-direction: column; }
.fv-inline-file-label { display: none; }

/* Full-page document reader shared by every role. */
#file-viewer-modal {
  padding: 0;
  align-items: stretch;
  justify-content: stretch;
  background: var(--gdk);
  backdrop-filter: none;
}

#file-viewer-modal > .modal-box {
  position: relative;
  display: flex;
  flex-direction: column;
  width: 100vw !important;
  max-width: none !important;
  height: 100vh;
  height: 100dvh;
  max-height: none;
  overflow: hidden !important;
  border-radius: 0 !important;
  box-shadow: none;
  animation: none;
}

#file-viewer-modal .fv-header {
  flex: 0 0 auto;
  min-height: 46px;
  padding: 7px 14px;
  border-radius: 0 !important;
}

#file-viewer-modal .fv-header-icon,
#file-viewer-modal .fv-header-sub,
#file-viewer-modal .fv-view-badge { display: none !important; }

#file-viewer-modal .fv-header-title {
  max-width: 32vw;
  font-size: .85rem;
}

#file-viewer-modal .fv-close-btn {
  width: 30px;
  height: 30px;
  border-radius: 6px;
  font-size: .9rem;
}

#file-viewer-modal #fv-guest-notice,
#file-viewer-modal .fv-document-tabs { flex: 0 0 auto; }

#file-viewer-modal .fv-document-tabs {
  position: absolute;
  top: 7px;
  left: 50%;
  z-index: 2;
  padding: 0;
  border: 0;
  background: transparent;
  transform: translateX(-50%);
}

#file-viewer-modal .fv-document-tab {
  min-height: 30px;
  padding: .25rem .65rem !important;
  font-size: .72rem !important;
}

#file-viewer-modal .fv-body {
  display: flex;
  flex: 1 1 auto;
  flex-direction: column;
  min-height: 0;
  max-height: none;
  overflow: auto;
  border-radius: 0 !important;
}

#file-viewer-modal .fv-pdf-viewer {
  flex: 1 1 auto;
  height: auto;
  min-height: 0;
}

#file-viewer-modal .fv-pdf-viewer iframe {
  pointer-events: auto !important;
  touch-action: auto;
}

#file-viewer-modal .approval-image-viewer {
  flex: 1 1 auto;
  min-height: 0;
}
.view-only-badge { font-size: .71rem; padding: 3px 9px; border-radius: 100px; background: var(--gpl); color: var(--gmd); font-weight: 600; }
.guest-lock {
  background: #fff8f0;
  border: 1px solid #fcd9a0;
  border-radius: var(--radius-control);
  padding: .75rem 1rem;
  font-size: .81rem;
  color: #7a4f00;
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: .75rem;
}

/* ── QR MODAL ─────────────────────────────────────────── */
.qr-modal-hd {
  background: var(--gdk);
  padding: 18px 22px;
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  border-radius: var(--radius-surface) var(--radius-surface) 0 0;
}
.qr-modal-hd-title { font-family: var(--font-serif); font-size: 1rem; font-weight: 700; color: #fff; }
.qr-modal-hd-sub   { font-size: .75rem; color: rgba(255,255,255,.5); margin-top: 2px; }
.qr-modal-hd-close {
  width: 34px; height: 34px; border-radius: 8px;
  background: rgba(220,53,69,.18); border: 1px solid rgba(220,53,69,.28);
  color: #fff; font-size: 1rem; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: background .15s; flex-shrink: 0;
}
.qr-modal-hd-close:hover { background: #c0392b; }
.qr-modal-thesis-name {
  font-family: var(--font-serif); font-size: 1rem; font-weight: 700;
  color: var(--gdk); margin-bottom: 4px; line-height: 1.4;
}
.qr-modal-canvas-wrap {
  display: inline-block; background: #fff;
  border: none; border-radius: var(--radius-surface);
  padding: 14px; box-shadow: 0 8px 28px rgba(0,0,0,.15);
}
.qr-modal-dl-btn {
  background: var(--nav-green); color: #fff; border: none; border-radius: 10px;
  padding: 11px 26px; font-size: .9rem; font-weight: 600; cursor: pointer;
  font-family: var(--font-sans); display: inline-flex; align-items: center; gap: 7px;
  transition: background .18s, transform .12s;
}
.qr-modal-dl-btn:hover { background: var(--nav-green-dark); transform: translateY(-1px); }


/* ── FORMS (shared across upload/edit/myuploads) ───────── */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: .75rem; }
.fg-item { margin-bottom: .65rem; }
.fg-label { display: block; font-size: .71rem; font-weight: 600; color: var(--gdk); letter-spacing: .04em; text-transform: uppercase; margin-bottom: 5px; }
.fg-input, .fg-select {
  width: 100%;
  padding: 7px 10px;
  border: 1px solid var(--bdr);
  border-radius: 8px;
  font-family: var(--font-sans);
  font-size: .87rem;
  color: var(--txt);
  background: white;
  outline: none;
  transition: border-color .2s;
}
.fg-input:focus, .fg-select:focus { border-color: transparent; box-shadow: 0 0 0 3px rgba(0,0,0,.08); }
.fg-textarea {
  width: 100%;
  padding: 7px 10px;
  border: 1px solid var(--bdr);
  border-radius: 8px;
  font-family: var(--font-sans);
  font-size: .87rem;
  color: var(--txt);
  background: white;
  outline: none;
  resize: vertical;
  min-height: 72px;
  transition: border-color .2s;
}
.fg-textarea:focus { border-color: transparent; }

/* ── TOAST ────────────────────────────────────────────── */
.toast-custom {
  position: fixed;
  bottom: 1.75rem;
  right: 1.75rem;
  z-index: 9999;
  background: var(--gdk);
  color: white;
  padding: 8px 14px;
  border-radius: var(--radius-control);
  font-size: .85rem;
  box-shadow: 0 6px 24px rgba(0,0,0,.25);
  transform: translateY(70px);
  opacity: 0;
  transition: all .28s;
  pointer-events: none;
  display: flex;
  align-items: center;
  gap: 8px;
  max-width: 320px;
}
.toast-custom.show { transform: none; opacity: 1; }
.toast-custom.toast-warning {
  top: 4.75rem;
  bottom: auto;
  background: #92400e;
  transform: translateY(-70px);
}
.toast-custom.toast-warning.show { transform: none; }
.toast-custom.toast-danger { background: #991b1b; }
.toast-custom.toast-success { background: var(--nav-green-dark); }

/* ── EMPTY STATE ──────────────────────────────────────── */
.empty-state { text-align: center; padding: 3.5rem 2rem; color: var(--mut); grid-column: 1/-1; }
.empty-icon { font-size: 2.4rem; margin-bottom: .7rem; opacity: .4; }
.empty-state p { font-size: .87rem; }

/* ─────────────────────────────────────────────────────── */
/*  RESPONSIVE                                            */
/* ─────────────────────────────────────────────────────── */
@media (max-width: 991px) {
  .stats-row { grid-template-columns: repeat(2, 1fr); }
  .dash-grid, .form-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .sidebar {
    position: fixed;
    top: 0; left: 0; bottom: 0;
    transform: translateX(-100%);
    z-index: 300;
  }
  .sidebar.open { transform: translateX(0); }
  .sidebar-overlay.open { display: block; }
  #menu-toggle { display: flex; }
  #app { flex-direction: column; }
  .main-content { height: 100vh; }
  .page { padding: 1rem; }
  .topbar { padding: 0 1rem; }
  .stats-row { grid-template-columns: 1fr 1fr; gap: .75rem; }
  .thesis-grid { grid-template-columns: 1fr; }
  .auth-logos img { width: 48px; height: 48px; }
}
@media (max-width: 480px) {
  .stats-row { grid-template-columns: 1fr; }
  .auth-card { margin: .75rem; padding: 1.75rem 1.25rem; }
  .admin-tabs-row { gap: .2rem; }
  .admin-tab { padding: 8px 10px; font-size: .78rem; }
}

/* ── GUEST VIEWER PROTECTIONS ─────────────────────── */
@media print {
  * { display: none !important; }
}

.guest-viewer-notice {
  background: #fffbea;
  border: 1px solid #fcd34d;
  border-radius: 8px;
  padding: 0.75rem 1rem;
  margin-bottom: 1rem;
  font-size: 0.85rem;
  color: #92400e;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.guest-viewer-notice strong {
  color: #b45309;
}



/* ── FILE VIEWER MODAL ──────────────────────────────── */
.fv-header {
  background: var(--gdk);
  padding: 14px 20px;
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  border-radius: var(--radius-surface) var(--radius-surface) 0 0;
}
.fv-header-info {
  display: flex; align-items: center; gap: 12px; min-width: 0;
}
.fv-header-icon { font-size: 1.5rem; flex-shrink: 0; }
.fv-header-title {
  font-family: var(--font-serif); font-weight: 700; color: #fff;
  font-size: .93rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 480px;
}
.fv-header-sub { font-size: .72rem; color: rgba(255,255,255,.5); margin-top: 2px; }
.fv-view-badge {
  font-size: .7rem; background: rgba(255,255,255,.12); color: rgba(255,255,255,.7);
  border: 1px solid rgba(255,255,255,.15); border-radius: 100px; padding: 3px 10px;
  white-space: nowrap;
}
.fv-close-btn {
  width: 34px; height: 34px; border-radius: 8px; flex-shrink: 0;
  background: rgba(220,53,69,.18); border: 1px solid rgba(220,53,69,.3);
  color: #fff; font-size: 1rem; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: background .15s;
}
.fv-close-btn:hover { background: #c0392b; }
.fv-body { overflow-y: auto; max-height: 85vh; border-radius: 0 0 var(--radius-surface) var(--radius-surface); }
.approval-image-viewer { min-height: 320px; padding: 1.25rem; background: #27272a; display: flex; align-items: center; justify-content: center; }
.approval-image-viewer img { display: block; max-width: 100%; max-height: 78vh; object-fit: contain; border-radius: var(--radius-control); }

/* ── SYSTEM-WIDE RADIUS STANDARD ───────────────────────
   Matches the guest UI: 10px surfaces, 8px controls.
   Circles, status dots, and pill badges intentionally keep
   their fully-rounded shapes. */
.auth-card,
.stat-card,
.card-box,
.thesis-card,
.search-wrap,
.search-dropdown,
.modal-box,
.qr-modal-canvas-wrap,
.upload-drop-zone,
#adv-drop-zone,
#single-drop-zone,
#scan-box {
  border-radius: var(--radius-surface) !important;
}

.card-header-row,
.modal-header,
.qr-modal-hd,
.fv-header,
.thesis-card::before {
  border-radius: var(--radius-surface) var(--radius-surface) 0 0 !important;
}

.tc-footer,
.fv-body {
  border-radius: 0 0 var(--radius-surface) var(--radius-surface) !important;
}

button,
input,
select,
textarea,
.auth-tabs,
.auth-alert,
.sb-user,
.btn-logout,
.chapter-item,
.guest-lock,
.toast-custom,
.part-item,
.single-file-preview,
#single-file-preview,
#adv-file-preview,
.guest-filter-menu,
.test-role-access,
#delete-thesis-name {
  border-radius: var(--radius-control) !important;
}

/* Consistently compact action buttons across every role and page. */
button:not(.notif-btn):not(.modal-close):not(.qr-modal-hd-close):not(.fv-close-btn):not(.search-clear):not(.pill-remove):not(.guest-search-btn):not(.guest-filter-toggle):not(.search-filter-toggle):not(.search-submit):not(.dropdown-toggle):not(.dropdown-item):not(.thesis-title-link):not(.fv-document-tab):not(.viewer-file-card),
a.btn,
input[type="button"],
input[type="submit"] {
  padding: .35rem .65rem !important;
  font-size: .78rem !important;
  font-weight: 500 !important;
  line-height: 1.25;
}

/* ─────────────────────────────────────────────────────── */
/*  GUEST BROWSE PAGE                                     */
/* ─────────────────────────────────────────────────────── */

/* Consistent green actions for thesis viewing and printable QR codes. */
.btn-qr { background: var(--nav-green); color: var(--wht); border-color: var(--nav-green); }
.btn-qr:hover { background: var(--nav-green-dark); color: var(--wht); border-color: var(--nav-green-dark); }
.qr-modal-hd, .fv-header, .fv-document-tabs { background: var(--nav-green-dark); }
.qr-modal-hd-close, .fv-close-btn {
  background: rgba(255,255,255,.1);
  border-color: rgba(255,255,255,.25);
}
.qr-modal-hd-close:hover, .fv-close-btn:hover { background: var(--nav-green); }
.fv-document-tab { color: var(--wht); }
.fv-document-tab:hover { background: var(--nav-green); }
.qr-modal-dl-btn:focus-visible, .btn-qr:focus-visible, .fv-document-tab:focus-visible,
.qr-modal-hd-close:focus-visible, .fv-close-btn:focus-visible {
  outline: 3px solid var(--nav-mint);
  outline-offset: 3px;
}
.qr-print-hint { margin: 0 0 1rem; color: var(--mut); font-size: .8rem; line-height: 1.5; }

/* Keep QR previews compact while retaining the full-resolution download. */
:is(#qr-modal, #qr-auto-modal) { padding: 12px; }
:is(#qr-modal, #qr-auto-modal) .modal-box { width: min(100%, 360px); max-height: calc(100dvh - 24px); }
:is(#qr-modal, #qr-auto-modal) .qr-modal-hd { padding: 10px 14px; gap: 8px; }
:is(#qr-modal, #qr-auto-modal) .qr-modal-hd-title { font-size: .9rem; }
:is(#qr-modal, #qr-auto-modal) .qr-modal-hd-sub {
  max-width: 260px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
:is(#qr-modal, #qr-auto-modal) .modal-body { padding: 12px 16px; text-align: center; }
:is(#qr-modal, #qr-auto-modal) .qr-modal-thesis-name {
  margin: 0; font-size: .86rem; line-height: 1.3;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
:is(#qr-modal, #qr-auto-modal) .qr-modal-canvas-wrap {
  margin: 8px auto !important; padding: 8px; box-shadow: none;
}
:is(#qr-box, #qr-auto-box) :is(img, canvas) {
  width: min(190px, 42vw, max(80px, calc(100dvh - 255px))) !important;
  height: auto !important; max-width: 100%;
}
:is(#qr-modal, #qr-auto-modal) .qr-print-hint { margin: 0 0 8px; font-size: .74rem; line-height: 1.35; }
:is(#qr-modal, #qr-auto-modal) .qr-modal-dl-btn { padding: 8px 14px !important; font-size: .8rem !important; }
@media (max-height: 450px) {
  :is(#qr-modal, #qr-auto-modal) .modal-body { padding: 6px 12px; }
  :is(#qr-modal, #qr-auto-modal) .qr-modal-hd-sub { display: none; }
  :is(#qr-modal, #qr-auto-modal) .qr-modal-canvas-wrap { margin: 4px auto !important; }
}