:root {
    --ink: #1b2433;
    --ink-soft: #4d5868;
    --navy: #17324d;
    --navy-deep: #102233;
    --brass: #a67c45;
    --brass-deep: #7d5a2e;
    --paper: #f3efe6;
    --card: #fffdf9;
    --line: #e3d9c8;
    --danger: #8d2f2f;
    --ok: #1d6b45;
    --ok-bg: #e7f4ec;
    --shadow: 0 18px 40px rgba(23, 50, 77, 0.08);
    --sans: "Noto Sans Bengali", "Segoe UI", sans-serif;
    --serif: "Literata", "Noto Serif Bengali", Georgia, serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    margin: 0;
    min-height: 100vh;
    color: var(--ink);
    background:
        radial-gradient(circle at top left, rgba(166, 124, 69, 0.16), transparent 28rem),
        var(--paper);
    font-family: var(--sans);
    font-size: 16px;
    line-height: 1.65;
}

a { color: inherit; }

img { max-width: 100%; }

button, input, select, textarea { font: inherit; }

.shell { width: min(1120px, calc(100% - 2rem)); margin: 0 auto; }

.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    background: rgba(243, 239, 230, 0.92);
    border-bottom: 1px solid var(--line);
    backdrop-filter: blur(10px);
}

.site-header .shell,
.site-footer .shell {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    min-height: 4.5rem;
}

.brand { display: flex; align-items: center; gap: 0.8rem; text-decoration: none; }

.brand-mark {
    display: grid;
    place-items: center;
    width: 2.4rem;
    height: 2.4rem;
    border-radius: 0.45rem;
    background: var(--navy);
    color: #f6e7c8;
    font-family: var(--serif);
    font-weight: 700;
}

.brand strong { display: block; font-family: var(--serif); font-size: 1.15rem; line-height: 1.1; }
.brand small { color: var(--ink-soft); }

.header-links { display: flex; align-items: center; gap: 0.6rem; }

.header-links a, .btn, .btn-ghost, .btn-danger {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 2.5rem;
    padding: 0.35rem 0.95rem;
    border-radius: 999px;
    text-decoration: none;
    border: 1px solid transparent;
    cursor: pointer;
}

.header-links a { border-color: var(--line); background: var(--card); white-space: nowrap; }

.btn {
    background: var(--navy);
    color: #fff;
    border-color: var(--navy);
}

.btn:hover { background: var(--navy-deep); }

.btn-brass { background: var(--brass-deep); border-color: var(--brass-deep); color: #fff; }
.btn-bkash { background: #e2136e; border-color: #e2136e; color: #fff; }
.btn-bkash:hover { background: #c0105e; }
.btn-ghost { background: transparent; border-color: var(--line); color: var(--ink); }
.btn-danger { background: var(--danger); color: #fff; }

.page { padding: 1.75rem 0 3rem; }

.home-stack { display: grid; gap: 1.25rem; }

.hero-grid {
    display: grid;
    grid-template-columns: minmax(280px, 340px) minmax(0, 1fr);
    gap: 1.25rem;
    align-items: stretch;
}

.intro, .panel, .admit-sheet, .login-card, .stat, .table-card {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 1.25rem;
    box-shadow: var(--shadow);
}

.intro {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: 1.5rem;
    height: 100%;
    padding: 1.5rem;
    background:
        linear-gradient(165deg, rgba(246, 231, 200, 0.45), transparent 40%),
        var(--navy);
    color: #f7f1e6;
}

.intro h1 { margin: 0; font-size: 1.85rem; }

.kicker {
    margin: 0 0 0.4rem;
    color: #e7c98a;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    font-size: 0.78rem;
}

h1, h2, h3 { font-family: var(--serif); line-height: 1.25; font-weight: 650; }
h1 { margin: 0 0 0.6rem; font-size: clamp(1.8rem, 3vw, 2.5rem); }
h2 { margin: 0; font-size: 1.45rem; }
h3 { margin: 0 0 0.8rem; font-size: 1.15rem; }

.intro p { margin: 0; color: #efe6d6; }
.intro-copy { display: grid; gap: 0.75rem; }

.steps {
    list-style: none;
    margin: 0;
    padding: 1.15rem 0 0;
    border-top: 1px solid rgba(231, 201, 138, 0.35);
    display: grid;
    gap: 0.85rem;
}
.steps li { display: grid; grid-template-columns: auto 1fr; gap: 0.75rem; align-items: center; }
.steps span {
    display: grid;
    place-items: center;
    width: 1.8rem;
    height: 1.8rem;
    border-radius: 50%;
    background: #e7c98a;
    color: var(--navy-deep);
    font-weight: 700;
}
.steps strong { display: block; }
.steps small { color: #d9d0c2; }

.panel { padding: 1.5rem; }
.panel + .panel { margin-top: 1rem; }

.form-panel h2 { margin-bottom: 0.35rem; }
.lede { margin: 0 0 1.15rem; color: var(--ink-soft); }

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem 1.1rem;
    align-items: start;
}
.form-grid > * { min-width: 0; }
.span-2 { grid-column: 1 / -1; }

label { display: block; margin-bottom: 0.3rem; font-size: 0.92rem; font-weight: 650; }
.req { color: var(--danger); }

input, select, textarea {
    width: 100%;
    height: 2.85rem;
    padding: 0 0.85rem;
    border: 1px solid #d9cdb8;
    border-radius: 0.75rem;
    background: #fff;
    color: var(--ink);
}

textarea {
    height: auto;
    min-height: 6.5rem;
    padding: 0.75rem 0.85rem;
    resize: vertical;
}

input[type="file"] {
    height: 2.85rem;
    padding: 0.45rem 0.7rem;
    line-height: 1.8;
}

input[type="checkbox"] { width: auto; height: auto; padding: 0; }
input:focus, select:focus, textarea:focus {
    outline: 2px solid rgba(166, 124, 69, 0.35);
    border-color: var(--brass);
}

.field-error { display: block; margin-top: 0.25rem; color: var(--danger); font-size: 0.85rem; }
.form-actions { display: flex; justify-content: flex-end; align-items: center; gap: 0.6rem; }
.form-actions .btn { height: 2.85rem; }

.photo-row { display: flex; align-items: center; gap: 0.85rem; }
.photo-row input[type="file"] { flex: 1; min-width: 0; }
.photo-preview, .avatar, .admit-photo {
    width: 92px;
    height: 112px;
    object-fit: cover;
    border-radius: 0.6rem;
    border: 1px solid var(--line);
    background: #f6f1e8;
}

.banner {
    margin-bottom: 1rem;
    padding: 0.85rem 1rem;
    border-radius: 0.9rem;
    background: var(--ok-bg);
    color: var(--ok);
    border: 1px solid #b7dfc8;
}

.banner-error {
    background: #fdecec;
    color: var(--danger);
    border-color: #f0c7c7;
}

.lookup-panel h2 { margin-bottom: 0.3rem; }
.lookup-panel .lede { margin-bottom: 1rem; }
.lookup-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr) auto;
    gap: 0.9rem 1rem;
    align-items: end;
}
.lookup-grid .btn { height: 2.85rem; padding-inline: 1.1rem; white-space: nowrap; }

.site-footer { border-top: 1px solid var(--line); color: var(--ink-soft); font-size: 0.92rem; }
.site-footer .shell { min-height: 3.5rem; }

.admit-locked {
    -webkit-user-select: none;
    user-select: none;
}

.admit-wrap { width: min(860px, 100%); margin: 0 auto; }
.admit-toolbar { display: flex; justify-content: space-between; gap: 0.8rem; margin-bottom: 1rem; }
.admit-sheet { padding: 1.2rem; }
.admit-frame { border: 2px solid var(--navy); padding: 0.7rem; }
.admit-inner { border: 1px solid var(--brass); padding: 1.1rem 1.2rem 1rem; }

.admit-head { display: flex; justify-content: space-between; gap: 1rem; align-items: center; text-align: center; }
.admit-head h1 { font-size: 1.7rem; margin-bottom: 0.15rem; }
.admit-head p { margin: 0; }
.admit-title {
    margin: 0.8rem 0;
    padding: 0.35rem 0.5rem;
    text-align: center;
    background: var(--navy);
    color: #f6e7c8;
    letter-spacing: 0.12em;
    font-family: var(--serif);
}

.admit-body { display: grid; grid-template-columns: 130px 1fr; gap: 1rem; }
.admit-photo { width: 120px; height: 145px; }
.meta { display: grid; grid-template-columns: 9.5rem 1fr; gap: 0.25rem 0.6rem; margin: 0; }
.meta dt { color: var(--ink-soft); }
.meta dd { margin: 0; font-weight: 650; }
.chips { display: flex; gap: 0.6rem; margin-top: 0.8rem; }
.chip { flex: 1; padding: 0.55rem 0.7rem; border: 1px dashed var(--brass); border-radius: 0.7rem; background: #fbf6ec; }
.chip small { display: block; color: var(--ink-soft); }
.chip strong { font-family: var(--serif); font-size: 1.15rem; }

.instructions { margin: 1rem 0 0; color: var(--ink-soft); }
.sign-row { display: flex; justify-content: space-between; gap: 2rem; margin-top: 2rem; }
.sign { width: 11rem; text-align: center; color: var(--ink-soft); }
.sign i { display: block; margin-bottom: 0.35rem; border-top: 1px solid var(--ink); height: 1.6rem; }

.login-page { min-height: 100vh; display: grid; place-items: center; padding: 1.5rem; }
.login-card { width: min(440px, 100%); padding: 1.6rem; }
.login-card h1 { font-size: 1.8rem; }

.admin-body { display: grid; grid-template-columns: 240px minmax(0, 1fr); min-height: 100vh; background: #f6f3ed; }
.sidebar { background: var(--navy-deep); color: #f4ecdf; padding: 1.2rem 0.9rem; }
.sidebar .brand strong, .sidebar .brand small { color: #f4ecdf; }
.sidebar .brand small { color: #c9bba6; }
.side-nav { display: grid; gap: 0.3rem; margin-top: 1.5rem; }
.side-nav a, .side-nav button {
    width: 100%;
    text-align: left;
    color: #f4ecdf;
    text-decoration: none;
    background: transparent;
    border: 0;
    border-radius: 0.7rem;
    padding: 0.65rem 0.8rem;
    cursor: pointer;
}
.side-nav a.active, .side-nav a:hover { background: rgba(255, 255, 255, 0.08); }
.admin-main { min-width: 0; padding: 1.4rem; }
.admin-top { display: flex; justify-content: space-between; align-items: center; gap: 1rem; margin-bottom: 1rem; }
.stats { display: grid; grid-template-columns: repeat(3, minmax(0, 220px)); gap: 0.8rem; margin-bottom: 1rem; }
.filter-card { margin-bottom: 1rem; padding: 1rem 1.1rem; }
.filters { display: flex; flex-wrap: wrap; gap: 0.75rem; align-items: flex-end; width: 100%; }
.filters .field { flex: 1 1 180px; min-width: 0; }
.filters .field.search { flex: 2 1 260px; }
.filters input, .filters select { min-width: 0; }
.filters .actions { flex: 1 0 100%; display: flex; justify-content: flex-end; gap: 0.45rem; }
.filters .btn, .filters .btn-ghost { height: 2.85rem; }
.table-card th, .table-card td { white-space: nowrap; }
.stat { padding: 1rem 1.1rem; }
.stat span { color: var(--ink-soft); }
.stat strong { display: block; font-family: var(--serif); font-size: 2rem; }

.table-scroll { overflow: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 0.75rem 0.9rem; text-align: left; border-bottom: 1px solid var(--line); vertical-align: middle; }
th { font-size: 0.85rem; color: var(--ink-soft); font-weight: 650; background: #fbf8f2; }
.person { display: flex; align-items: center; gap: 0.65rem; }
.avatar { width: 38px; height: 46px; }
.search-bar { display: flex; gap: 0.5rem; }
.search-bar input { width: min(320px, 70vw); }

.detail { display: grid; grid-template-columns: 160px 1fr; gap: 1.2rem; }
.detail .admit-photo { width: 150px; height: 180px; }
.actions { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 1rem; }
.empty { padding: 1.4rem; color: var(--ink-soft); }
.row-due td { background: #fdecec; }
.row-due td:first-child { box-shadow: inset 3px 0 0 var(--danger); }
.pay-badge {
    display: inline-flex;
    align-items: center;
    border-radius: 999px;
    padding: 0.2rem 0.6rem;
    font-size: 0.82rem;
    font-weight: 650;
    line-height: 1.3;
}
.pay-due { background: #f6d2d2; color: var(--danger); }
.pay-paid { background: var(--ok-bg); color: var(--ok); }
.pay-free { background: #f3efe8; color: var(--ink-soft); }
.pager {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    align-items: center;
    justify-content: space-between;
    padding: 0.8rem 0.9rem;
    border-top: 1px solid var(--line);
}
.pager-summary { margin: 0; color: var(--ink-soft); font-size: 0.9rem; }
.pager-pages { display: flex; flex-wrap: wrap; gap: 0.35rem; align-items: center; }
.pager .page {
    min-width: 2.15rem;
    height: 2.15rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0 0.6rem;
    border: 1px solid var(--line);
    border-radius: 0.55rem;
    background: #fff;
    color: var(--navy);
    text-decoration: none;
}
.pager a.page:hover { border-color: var(--navy); }
.pager .page.active { background: var(--navy); border-color: var(--navy); color: #fff; }
.pager .page.disabled, .pager .page.dots { color: var(--ink-soft); background: #f7f4ee; }
.muted { color: var(--ink-soft); }

@media (max-width: 860px) {
    .hero-grid, .form-grid, .admit-body, .lookup-grid, .admin-body, .detail { grid-template-columns: 1fr; }
    .intro { height: auto; }
    .span-2 { grid-column: auto; }
    .lookup-grid { align-items: stretch; }
    .lookup-grid .btn { width: 100%; }
    .sidebar { padding-bottom: 0.4rem; }
    .side-nav { grid-template-columns: repeat(2, 1fr); margin-top: 0.8rem; }
    .stats { grid-template-columns: 1fr; }
    .filters .actions { justify-content: stretch; }
    .filters .actions .btn, .filters .actions .btn-ghost { flex: 1; }
    .site-header .shell { align-items: center; padding: 0.8rem 0; }
    .brand small { display: none; }
    .header-links a { padding: 0.3rem 0.7rem; font-size: 0.88rem; }
}

@media print {
    body { background: #fff; }
    .no-print { display: none !important; }
    .page { padding: 0; }
    .admit-wrap { width: 100%; }
    .admit-sheet { box-shadow: none; border: 0; }
}