/* =========================
   Global style.css (consolidated)
   Production-ready, Bootstrap-friendly, accessible tokens
   Load order: bootstrap -> icons -> style.css -> pages/*.css -> dark-mode.css
   ========================= */

/* Design tokens */
:root{
  --accent: #4CAF50;
  --accent-600: #3b8f3f;
  --brand-blue: #0d6efd;
  --bg: #f4f7f6;
  --surface: #ffffff;
  --muted: #6c757d;
  --text: #222;
  --border: #e0e0e0;
  --table-head-bg: #fafafa;
  --chart-text: #333;
  --card-radius: 10px;
  --radius-sm: 6px;
  --shadow-sm: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-md: 0 6px 16px rgba(0,0,0,0.12);
  --focus-ring: rgba(76,175,80,0.15);
  --max-width: 1200px;
  --font-sans: "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --transition-fast: 180ms ease;
}

/* Accessibility reduced motion */
@media (prefers-reduced-motion: reduce){
  :root{--transition-fast: 0ms}
}

/* =========================
   Base / Layout
   ========================= */
*{box-sizing:border-box}
html,body{height:100%}
body{
  font-family:var(--font-sans);
  background:var(--bg);
  color:var(--text);
  margin:0;
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  -webkit-text-size-adjust:100%;
}

/* Central container – complement Bootstrap .container */
.container{
  width:100%;
  max-width:var(--max-width);
  margin-left:auto;
  margin-right:auto;
  padding-left:1rem;
  padding-right:1rem;
}

/* Headings & text */
h1{color:var(--accent);font-weight:700;margin:0 0 .5rem;font-size:2rem}
h2{color:var(--accent-600);margin:.25rem 0 .75rem;font-size:1.25rem}
h3{color:var(--accent);margin:.5rem 0 .5rem;font-size:1.05rem;font-weight:600}
.lead{color:var(--muted)}
.text-muted{color:var(--muted)}
.small{font-size:.9rem;color:var(--muted)}

/* Links */
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}

/* =========================
   Navbar (Bootstrap-aware)
   ========================= */
.navbar{
  background:var(--surface);
  box-shadow:var(--shadow-sm);
  border-bottom:1px solid var(--border);
}
.navbar .navbar-brand{color:var(--accent);font-weight:700}
.navbar .nav-link{color:var(--text)}
.navbar .nav-link:hover{color:var(--accent-600)}
.navbar .btn-outline-success{border-color:rgba(76,175,80,0.12);color:var(--accent)}

/* Compact responsive width for search controls */
.navbar .form-select, .navbar .form-control{
  min-width:110px;
  width:clamp(120px,18vw,320px)
}

/* Icon-only button accessible hit area */
.btn-icon{display:inline-flex;align-items:center;justify-content:center;padding:.45rem;border-radius:8px}

/* =========================
   Cards
   ========================= */
.card{
  background:var(--surface);
  border-radius:var(--card-radius);
  box-shadow:var(--shadow-sm);
  border:none;
  transition:transform var(--transition-fast), box-shadow var(--transition-fast);
  overflow:hidden;
}
@media (prefers-reduced-motion: no-preference){
  .card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
}
.card-header{background:rgba(0,0,0,0.02);padding:.85rem 1rem;font-weight:600;border-bottom:1px solid var(--border)}
.card-body{padding:1rem}
.card-body h6{font-size:.9rem;text-transform:uppercase;color:var(--muted);margin-bottom:.4rem}

/* =========================
   Buttons
   ========================= */
.btn{display:inline-block;padding:.45rem .75rem;border-radius:8px;font-weight:600;cursor:pointer;border:1px solid transparent;line-height:1}
.btn-primary{background:var(--accent);color:#fff;border-color:rgba(76,175,80,0.12)}
.btn-primary:hover{background:var(--accent-600)}
.btn-secondary{background:#f5f6f7;color:var(--text);border-color:var(--border)}
.btn-outline-success{background:transparent;color:var(--accent);border:1px solid rgba(76,175,80,0.12)}
.btn-link{background:transparent;border:none;color:var(--accent);padding:0}

/* Size helpers */
.btn-sm{padding:.35rem .6rem;font-size:.9rem}
.btn-lg{padding:.7rem 1.1rem;font-size:1.05rem}

/* Focus-visible accessibility */
:focus-visible{outline:none;box-shadow:0 0 0 .12rem var(--focus-ring);border-radius:8px}

/* =========================
   Forms
   ========================= */
.form-control, .form-select, input[type="text"], textarea{
  display:block;width:100%;padding:.5rem .75rem;border:1px solid var(--border);border-radius:6px;font-size:.95rem;background:var(--surface);color:var(--text)
}
.form-control:focus, .form-select:focus{border-color:var(--accent)}
.form-text{color:var(--muted)}

/* =========================
   Tables
   ========================= */
.table{width:100%;border-collapse:collapse;margin-top:.75rem}
.table th, .table td{padding:12px;text-align:left;border-bottom:1px solid var(--border);vertical-align:middle}
.table thead th{background:var(--table-head-bg);font-weight:600;color:var(--text)}
.table tbody tr:hover{background:rgba(76,175,80,0.03)}
.table td .small{color:var(--muted)}
.table-responsive{overflow:auto;-webkit-overflow-scrolling:touch}

/* Compact variant */
.table-compact th, .table-compact td{padding:8px}

/* =========================
   Badges / Risk indicators
   ========================= */
.badge{display:inline-block;padding:.28rem .55rem;border-radius:.4rem;font-size:.82rem}
.badge-muted{background:#f5f5f5;color:#555}
.badge-accent{background:var(--accent);color:#fff}

/* Risk badges */
.risk-badge{display:inline-block;padding:.25rem .5rem;border-radius:.25rem;font-weight:600}
.risk-dropout{background:#fdecea;color:#b42318;border:1px solid rgba(180,35,24,0.06)}
.risk-enrolled{background:#fff4e6;color:#7a5a06;border:1px solid rgba(255,193,7,0.06)}
.risk-graduate{background:#eaf6ee;color:#1a7f37;border:1px solid rgba(26,127,55,0.06)}
.risk-unknown{background:#eee;color:#555;border:1px solid rgba(0,0,0,0.03)}

/* =========================
   Lists, PSEP, groups
   ========================= */
.list-group-item{padding:.6rem .75rem;border-bottom:1px solid #f1f3f5;background:transparent}
.list-unstyled li{padding:.45rem 0;border-bottom:1px solid var(--border)}
.list-unstyled li:last-child{border-bottom:none}
pre{background:#f9f9f9;padding:12px;border-radius:6px;white-space:pre-wrap;word-wrap:break-word;border:1px solid var(--border)}

/* =========================
   Dropdowns, notifications
   ========================= */
.dropdown-menu{max-width:380px}
.dropdown-item{white-space:normal}

/* =========================
   Chart container
   ========================= */
.chart-container{position:relative;width:100%;height:520px;margin-bottom:1.25rem;padding:.5rem;border-radius:8px;background:transparent}
.chart-container canvas{color:var(--chart-text);display:block;max-width:100%}

/* Responsive chart heights */
@media (max-width:992px){ .chart-container{height:360px} }
@media (max-width:768px){ .chart-container{height:320px;padding:6px} }

/* =========================
   Pagination
   ========================= */
.pagination{display:flex;list-style:none;gap:.25rem;padding:0;margin:0}
.page-link{padding:.45rem .65rem;border-radius:6px;border:1px solid var(--border);color:var(--accent);background:var(--surface)}
.page-item.active .page-link{background:var(--accent);color:#fff;border-color:var(--accent)}

/* =========================
   Utility helpers & layout
   ========================= */
/* IMPORTANT: Let Bootstrap control .row and .col-* for responsive grid.
   Do NOT override .row or .col-* here, use Bootstrap gutter classes (e.g., g-3, g-4). */

/* Toolbar and groups */
.btn-toolbar{display:flex;gap:.5rem;flex-wrap:wrap}
.btn-group .btn{border-radius:6px}

/* Sticky filter bar */
.dashboard-filter-bar{
  position:sticky;top:0;z-index:30;border-radius:8px;background:var(--surface);
  box-shadow:var(--shadow-sm);padding:.75rem
}

/* Small responsive adjustments */
@media (max-width:992px){
  .navbar .form-control{width:180px}
}
@media (max-width:768px){
  h1{font-size:1.6rem}
  .card-body{padding:.85rem}
  .btn-toolbar{flex-direction:column}
  .navbar .form-control{width:130px}
}

/* =========================
   Print
   ========================= */
@media print{
  body{background:#fff;color:#000}
  .no-print, .btn, .btn-toolbar, .profile-back-btn, .navbar, .dropdown, .accordion-button{display:none!important}
  .card{box-shadow:none!important;border-radius:0!important}
  .chart-container{display:none!important}
}

/* =========================
   Accessibility helpers
   ========================= */
.visually-hidden{position:absolute!important;height:1px;width:1px;overflow:hidden;clip:rect(1px,1px,1px,1px);white-space:nowrap;border:0;padding:0;margin:-1px}
.sr-only{position:absolute!important;height:1px;width:1px;overflow:hidden;clip:rect(1px,1px,1px,1px);white-space:nowrap;border:0;padding:0;margin:-1px}
.focus-ring{box-shadow:0 0 0 .12rem var(--focus-ring);border-radius:8px}

/* =========================
   Tiny page-specific scaffolding (scoped usage)
   Use page wrappers in templates to avoid body overrides:
     <div class="predict-student-page"> ... </div>
   ========================= */
.predict-student-page{max-width:900px;margin:0 auto}
.student-profile-page{max-width:980px;margin:0 auto}
.upload-data-page{max-width:980px;margin:0 auto}

/* End of global style.css */