/* =========================================================================
   BAST SMS — Design System v2
   Direction: modern SaaS admin — near-black slate sidebar, one confident
   indigo accent, geometric display face (Manrope) for headings/brand and
   Inter for body copy, JetBrains Mono for figures (fees, %, IDs) so data
   stays scannable in dense tables.
   ========================================================================= */

@import url('https://fonts.googleapis.com/css2?family=Manrope:wght@500;600;700;800&family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@500;600&display=swap');

:root{
  /* Slate / near-black family (sidebar, headers) */
  --ink-900:#0A0F1C;
  --ink-800:#111A2E;
  --ink-700:#182543;
  --ink-600:#22335C;

  /* Indigo accent — the single signature color */
  --accent-600:#3452D9;
  --accent-500:#4C6EF5;
  --accent-400:#7C97FF;
  --accent-100:#EAEFFF;

  /* Paper / neutrals */
  --paper:#F4F6FB;
  --paper-card:#FFFFFF;
  --line:#E4E8F1;
  --slate-700:#333B54;
  --slate-500:#6B7290;
  --slate-300:#9AA1BD;

  /* Status */
  --ok:#178A5A;
  --ok-bg:#E6F6EE;
  --bad:#D8433C;
  --bad-bg:#FBEAE9;
  --warn:#C1780C;
  --warn-bg:#FCF1DE;
  --info:#2857C7;
  --info-bg:#EAF0FD;

  --radius-lg:16px;
  --radius-md:12px;
  --radius-sm:9px;
  --shadow-card:0 2px 10px rgba(10,15,28,0.06), 0 1px 2px rgba(10,15,28,0.05);
  --shadow-card-hover:0 12px 26px rgba(10,15,28,0.10);
  --font-display:'Manrope', 'Inter', sans-serif;
  --font-body:'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono:'JetBrains Mono', SFMono-Regular, Menlo, monospace;
}

html, body{
  max-width: 100%;
  overflow-x: hidden;
}

body{
  background: var(--paper) !important;
  font-family: var(--font-body);
  color: var(--slate-700);
  -webkit-font-smoothing: antialiased;
}

h1,h2,h3,h4,h5,h6, .card-title{
  font-family: var(--font-display);
  color: var(--ink-900);
  font-weight: 700;
  letter-spacing: -0.015em;
}

h2{ position:relative; padding-bottom:.6rem; margin-bottom:1.5rem !important; font-weight:800; }
h2::after{
  content:"";
  position:absolute; left:0; bottom:0;
  width:44px; height:4px; border-radius:4px;
  background: var(--accent-500);
}

a{ color: var(--accent-600); }
a:hover{ color: var(--accent-500); }

::selection{ background: var(--accent-100); color: var(--ink-900); }

.card-kpi h3, .card-kpi h4, .fw-mono, .kpi-number, table td.num, table th.num{
  font-family: var(--font-mono);
}

/* -------------------------------------------------------------------------
   SIDEBAR — near-black slate, one accent, real hierarchy
   ------------------------------------------------------------------------- */
.sidebar, .offcanvas.d-md-none{
  background: #FFFFFF !important;
  border-right: 1px solid var(--line);
}

.sidebar-brand{
  padding: 1.7rem 1.35rem !important;
  border-bottom: 1px solid var(--line) !important;
}
.logo-badge{
  width: 46px !important; height: 46px !important;
  border-radius: 12px !important;
  background: linear-gradient(135deg, var(--accent-500), var(--accent-600)) !important;
  box-shadow: 0 4px 14px rgba(76,110,245,0.30);
  display: flex !important; align-items: center !important; justify-content: center !important;
  flex-shrink: 0;
  padding: 6px;
}
.logo-badge-img{
  width: 100%; height: 100%; object-fit: contain;
  filter: drop-shadow(0 1px 1px rgba(0,0,0,0.15));
}
.sidebar-brand .brand-text .name{
  font-family: var(--font-display) !important;
  font-weight: 800 !important;
  font-size: 1.02rem !important;
  letter-spacing: -0.01em;
  color: var(--ink-900) !important;
}
.sidebar-brand .brand-text .tagline{
  color: var(--slate-500) !important;
  font-weight: 500;
}

.sidebar-nav .nav-section-label{
  color: var(--slate-300) !important;
  font-size: .66rem !important;
  text-transform: uppercase;
  letter-spacing: .11em !important;
  font-weight: 700 !important;
  margin-top: .4rem;
}

.sidebar-nav a.nav-link-item{
  border-radius: var(--radius-sm) !important;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: .89rem !important;
  color: var(--slate-700) !important;
  display: flex; align-items: center; gap: .7rem;
  padding: .58rem .75rem !important;
  margin-bottom: 3px;
  transition: background-color .15s ease, color .15s ease, transform .15s ease;
}
.sidebar-nav a.nav-link-item i{
  color: var(--slate-300) !important;
  font-size: 1.02rem;
  width: 22px; text-align: center;
  transition: color .15s ease;
}
.sidebar-nav a.nav-link-item:hover{
  background-color: var(--paper) !important;
  color: var(--ink-900) !important;
  transform: translateX(2px);
}
.sidebar-nav a.nav-link-item:hover i{ color: var(--accent-500) !important; }

.sidebar-nav a.nav-link-item.active{
  background: var(--accent-100) !important;
  color: var(--accent-600) !important;
  font-weight: 700;
  position: relative;
}
.sidebar-nav a.nav-link-item.active::before{
  content:"" !important;
  position:absolute; left:-0.75rem; top:8px; bottom:8px; width:3px;
  border-radius: 0 3px 3px 0;
  background: var(--accent-500) !important;
}
.sidebar-nav a.nav-link-item.active i{ color: var(--accent-600) !important; }

.sidebar-footer{
  border-top: 1px solid var(--line) !important;
  padding: 1rem 1.1rem !important;
}
.sidebar-footer .fw-semibold{ color: var(--ink-900) !important; }

.mobile-topbar{
  background: #FFFFFF !important;
  border-bottom: 1px solid var(--line);
  color: var(--ink-900) !important;
}
.mobile-topbar span{ color: var(--ink-900) !important; }

/* -------------------------------------------------------------------------
   Top utility bar
   ------------------------------------------------------------------------- */
.topbar{
  display:flex; align-items:center; justify-content:space-between;
  padding: .85rem 1.5rem;
  margin: -20px -20px 20px -20px;
  background: var(--paper-card);
  border-bottom: 1px solid var(--line);
}
.topbar .topbar-title{
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.02rem;
  color: var(--ink-900);
  display:flex; align-items:center; gap:.5rem;
}
.topbar .topbar-title small{
  font-family: var(--font-body);
  font-size: .72rem; color: var(--slate-500); font-weight:500;
  border-left: 2px solid var(--accent-500); padding-left:.6rem; margin-left:.2rem;
}
.topbar-actions{ display:flex; align-items:center; gap:.9rem; }
.topbar-icon-btn{
  width: 38px; height: 38px; border-radius: 50%;
  display:flex; align-items:center; justify-content:center;
  background: var(--paper); color: var(--slate-700);
  border: 1px solid var(--line); position:relative;
  text-decoration:none; transition: all .15s ease;
}
.topbar-icon-btn:hover{ background: var(--accent-100); color: var(--accent-600); }
.topbar-icon-btn .dot{
  position:absolute; top:6px; right:7px;
  width:8px; height:8px; border-radius:50%;
  background: var(--bad); border:1.5px solid #fff;
}
.topbar-profile{
  display:flex; align-items:center; gap:.6rem;
  padding: .3rem .7rem .3rem .3rem;
  border-radius: 999px; border: 1px solid var(--line);
  cursor:pointer; text-decoration:none; color: var(--slate-700);
}
.topbar-profile:hover{ background: var(--paper); }
.topbar-avatar{
  width: 30px; height: 30px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-500), var(--accent-600));
  color: #fff; font-family: var(--font-display); font-weight:700;
  display:flex; align-items:center; justify-content:center; font-size:.85rem;
}
.topbar-profile .profile-meta{ line-height:1.1; }
.topbar-profile .profile-meta .p-name{ font-size:.82rem; font-weight:600; color: var(--ink-900); }
.topbar-profile .profile-meta .p-role{ font-size:.7rem; color: var(--slate-500); }

@media (max-width: 767.98px){
  .content{ padding: 14px !important; }
  .topbar{ margin: -14px -14px 16px -14px; padding: .7rem 1rem; }
}

/* -------------------------------------------------------------------------
   Root cause of tables (and anything else wide) stretching the whole page
   sideways: .row (Bootstrap) is display:flex, and .content is a flex item.
   Flex items default to min-width:auto, meaning they refuse to shrink
   below the natural width of their deepest content — even content sitting
   inside a .table-responsive scroll wrapper several levels down. That lets
   a wide table drag the entire row/page wider than the screen instead of
   just scrolling inside its own wrapper. Forcing min-width:0 here lets the
   column shrink to the viewport properly so .table-responsive can do its job. */
.content, nav.sidebar{
  min-width: 0;
}

/* -------------------------------------------------------------------------
   Several pages (Setup, Tests, Attendance, Add/Manage Student, Fees,
   Revenue & Expenses, Dashboard) wrap their content in their own
   .container-fluid, but that content already sits inside .content
   (see header.php), which supplies its own padding. Left alone, this
   doubles up the padding — most visible as extra empty space above each
   page's own tab menu, and worst on mobile where space is tight.
   Instead of hand-editing the markup in every page, strip the
   duplicate padding at the source. */
.content > .container-fluid{
  padding-left: 0 !important;
  padding-right: 0 !important;
  padding-top: 0 !important;
  padding-bottom: 0 !important;
}

/* Revenue & Expenses adds "mt-4" on top of its tab menu's own "mb-3" —
   an extra, unintended gap directly above the tabs. */
.content .nav-tabs{ margin-top: 0 !important; }

/* -------------------------------------------------------------------------
   Cards
   ------------------------------------------------------------------------- */
.card{
  border: 1px solid var(--line) !important;
  border-radius: var(--radius-lg) !important;
  box-shadow: var(--shadow-card) !important;
  transition: box-shadow .2s ease;
}
.card.shadow-sm:hover{ box-shadow: var(--shadow-card-hover) !important; }

/* Neutralize stray Bootstrap border-color utilities used on forms (border-primary/border-info/etc.) */
.card.border-primary, .card.border-info, .card.border-success, .card.border-warning, .card.border-danger, .card.border-secondary{
  border-color: var(--line) !important;
  border-top: 3px solid var(--accent-500) !important;
}

.card-header{
  border-radius: var(--radius-lg) var(--radius-lg) 0 0 !important;
  border-bottom: none !important;
  font-weight: 700;
  padding: .9rem 1.2rem !important;
  font-family: var(--font-display);
}
.card-header.bg-dark{
  background: linear-gradient(120deg, var(--ink-800), var(--ink-700)) !important;
  position: relative;
}
.card-header.bg-dark::after{
  content:"";
  position:absolute; left:1.2rem; right:1.2rem; bottom:0;
  height:2px; background: linear-gradient(90deg, var(--accent-500), transparent);
}
.card-header.bg-white{ background: #fff !important; }
.card-body{ padding: 1.25rem !important; }

.card-kpi{ overflow:hidden; position:relative; }
.card-kpi::before{
  content:""; position:absolute; top:0; left:0; bottom:0; width:4px;
  background: var(--accent-500);
}
.card-kpi h3, .card-kpi h4{ color: var(--ink-900); }

/* Headings inside forms that used Bootstrap's default blue/cyan text utilities */
.text-primary{ color: var(--accent-600) !important; }

/* -------------------------------------------------------------------------
   Tables
   ------------------------------------------------------------------------- */
.table{ margin-bottom:0; }
.table thead.table-dark th, .table thead.table-light th, .table > :not(caption) > * > th{
  font-family: var(--font-body);
  font-size: .72rem; text-transform: uppercase; letter-spacing:.06em;
  font-weight:700;
}
.table thead.table-dark, table thead.table-dark th{
  background: var(--ink-800) !important; color:#fff !important; border-color: var(--ink-800) !important;
}
.table thead.table-light, table thead.table-light th{
  background: var(--paper) !important; color: var(--slate-700) !important; border-color: var(--line) !important;
}
.table-striped>tbody>tr:nth-of-type(odd)>*{ background-color: rgba(76,110,245,0.03); }
.table-hover>tbody>tr:hover>*{ background-color: var(--accent-100) !important; }
.table td, .table th{ vertical-align: middle; padding: .7rem .8rem; }
.table-responsive{ border-radius: var(--radius-md); -webkit-overflow-scrolling: touch; }

/* -------------------------------------------------------------------------
   Mobile card layout for data-heavy tables (opt-in via .table-card-mobile).
   Below 768px, a wide table forces sideways scrolling inside its own
   .table-responsive wrapper — technically contained now, but still an
   awkward way to read a record on a phone. Instead, collapse each <tr>
   into a bordered card and lay its cells out as label:value rows, using
   each <td>'s data-label attribute as the row's caption.
   ------------------------------------------------------------------------- */
@media (max-width: 767.98px){
  .table-card-mobile thead{ display:none; }
  .table-card-mobile, .table-card-mobile tbody, .table-card-mobile tr, .table-card-mobile td{
    display:block; width:100%;
  }
  .table-card-mobile{ background: transparent !important; }
  .table-card-mobile tr{
    margin-bottom: .9rem;
    border: 1px solid var(--line) !important;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-card);
  }
  .table-card-mobile tr:last-child{ margin-bottom: 0; }
  .table-card-mobile tbody tr:nth-of-type(odd) > *{ background: transparent !important; }
  .table-card-mobile td{
    display: block;
    text-align: left;
    padding: .55rem .9rem !important;
    border: none !important;
    border-bottom: 1px solid var(--line) !important;
  }
  .table-card-mobile td:last-child{ border-bottom: none !important; }
  .table-card-mobile td::before{
    content: attr(data-label);
    display: block;
    font-family: var(--font-body);
    font-size: .68rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .05em;
    color: var(--slate-500);
    margin-bottom: .2rem;
  }
  /* A full-width colspan row (e.g. "no records found") has no data-label —
     show it as plain centered text instead of a label:value pair. */
  .table-card-mobile td[colspan]{
    text-align: center !important;
  }
  .table-card-mobile td[colspan]::before{ content: none; }
}

/* -------------------------------------------------------------------------
   Forms
   ------------------------------------------------------------------------- */
.form-label{ font-size:.81rem; font-weight:600; color: var(--ink-800); margin-bottom:.35rem; }
.form-control, .form-select{
  border-radius: var(--radius-sm) !important;
  border: 1px solid var(--line) !important;
  padding: .55rem .8rem !important;
  font-size: .92rem;
}
.form-control:focus, .form-select:focus{
  border-color: var(--accent-500) !important;
  box-shadow: 0 0 0 3px var(--accent-100) !important;
}
.form-text{ font-size:.78rem; color: var(--slate-500); }

/* -------------------------------------------------------------------------
   Buttons
   ------------------------------------------------------------------------- */
.btn{ border-radius: var(--radius-sm) !important; font-weight:600; padding:.5rem 1.1rem; }
.btn-primary{ background: var(--accent-500) !important; border-color: var(--accent-500) !important; }
.btn-primary:hover{ background: var(--accent-600) !important; border-color: var(--accent-600) !important; }
.btn-outline-secondary{ border-color: var(--line) !important; color: var(--slate-700) !important; }
.btn-outline-secondary:hover{ background: var(--paper) !important; color: var(--ink-900) !important; }
.btn-warning{ background: var(--warn) !important; border-color: var(--warn) !important; color:#fff !important; }
.btn-outline-warning{ color: var(--warn) !important; border-color: var(--warn) !important; }
.btn-outline-warning:hover{ background: var(--warn-bg) !important; color: var(--ink-900) !important; }
.btn-outline-danger:hover{ background: var(--bad-bg) !important; }
.btn-info{ background-color: var(--info) !important; border-color: var(--info) !important; color:#fff !important; }
.btn-info:hover{ background-color: #1E4399 !important; border-color: #1E4399 !important; color:#fff !important; }
.btn-outline-info{ color: var(--info) !important; border-color: var(--info) !important; }
.btn-outline-info:hover{ background-color: var(--info) !important; color:#fff !important; }

/* -------------------------------------------------------------------------
   Badges & alerts
   ------------------------------------------------------------------------- */
.badge{ border-radius: 999px !important; font-weight:600; padding:.4em .75em; font-size:.72rem; letter-spacing:.02em; }
.bg-success{ background-color: var(--ok) !important; }
.bg-danger{ background-color: var(--bad) !important; }
.bg-primary{ background-color: var(--accent-600) !important; }
.bg-info{ background-color: var(--info) !important; color:#fff !important; }
.bg-warning{ background-color: var(--warn) !important; color:#fff !important; }
.bg-secondary{ background-color: var(--slate-500) !important; }
.bg-light{ background-color: #F0F2F8 !important; }
.text-info{ color: var(--info) !important; }
.text-warning{ color: var(--warn) !important; }

.alert{ border-radius: var(--radius-md) !important; border: none !important; border-left: 4px solid transparent !important; font-size:.9rem; }
.alert-success{ background: var(--ok-bg) !important; color: var(--ok) !important; border-left-color: var(--ok) !important; }
.alert-danger{ background: var(--bad-bg) !important; color: var(--bad) !important; border-left-color: var(--bad) !important; }
.alert-warning{ background: var(--warn-bg) !important; color: var(--warn) !important; border-left-color: var(--warn) !important; }
.alert-info{ background: var(--info-bg) !important; color: var(--info) !important; border-left-color: var(--info) !important; }

/* -------------------------------------------------------------------------
   Nav tabs (Reports, Setup: Courses/Teachers/Batches)
   ------------------------------------------------------------------------- */
.nav-tabs{ border-bottom: 1px solid var(--line); gap:.25rem; }
.nav-tabs .nav-link{
  border:none !important; color: var(--slate-500); font-weight:600;
  font-family: var(--font-display);
  border-radius: var(--radius-sm) var(--radius-sm) 0 0 !important;
  padding: .6rem 1.1rem;
}
.nav-tabs .nav-link:hover{ color: var(--ink-900); }
.nav-tabs .nav-link.active{
  color: var(--accent-600) !important; background: var(--paper-card) !important;
  box-shadow: inset 0 -3px 0 var(--accent-500);
}

/* -------------------------------------------------------------------------
   Empty states
   ------------------------------------------------------------------------- */
.empty-state{ text-align:center; padding: 3rem 1.5rem; color: var(--slate-500); }
.empty-state i{ font-size: 2.2rem; color: var(--accent-400); display:block; margin-bottom:.75rem; }
.empty-state .empty-title{ font-family: var(--font-display); color: var(--ink-900); font-size:1.05rem; margin-bottom:.25rem; }

/* -------------------------------------------------------------------------
   Login page
   ------------------------------------------------------------------------- */
.auth-shell{ min-height:100vh; display:flex; }
.auth-brand-panel{
  flex:1.1; position:relative; overflow:hidden;
  background: linear-gradient(165deg, var(--ink-800) 0%, var(--ink-900) 70%);
  color:#fff; display:flex; flex-direction:column; justify-content:center;
  padding: 4rem;
}
.auth-brand-panel::before{
  content:""; position:absolute; inset:0;
  background-image: radial-gradient(rgba(76,110,245,0.18) 1px, transparent 1px);
  background-size: 22px 22px;
  opacity:.6;
}
.auth-seal{
  width:64px; height:64px; border-radius: 16px;
  background: linear-gradient(135deg, var(--accent-500), var(--accent-600));
  display:flex; align-items:center; justify-content:center;
  font-family: var(--font-display); font-weight:800; font-size:1.6rem; color:#fff;
  box-shadow: 0 8px 22px rgba(76,110,245,0.4);
  position:relative; z-index:1; margin-bottom:2rem;
}
.auth-brand-panel h1{
  color:#fff; font-size:2.1rem; position:relative; z-index:1; max-width:420px;
}
.auth-brand-panel h1::after{ display:none; }
.auth-brand-panel p{ color: var(--slate-300); position:relative; z-index:1; max-width:380px; }
.auth-form-panel{
  flex:1; display:flex; align-items:center; justify-content:center;
  background: var(--paper); padding: 2rem;
}
.login-card{
  width:100%; max-width:400px; border:1px solid var(--line) !important;
  border-radius: var(--radius-lg) !important; box-shadow: var(--shadow-card) !important;
}
@media (max-width: 900px){
  .auth-brand-panel{ display:none; }
  .auth-form-panel{ background: linear-gradient(165deg, var(--ink-800) 0%, var(--ink-900) 100%); }
}

/* Scrollbar polish */
::-webkit-scrollbar{ width:8px; height:8px; }
::-webkit-scrollbar-thumb{ background: var(--slate-300); border-radius:8px; }
::-webkit-scrollbar-track{ background: transparent; }