@import url('https://fonts.googleapis.com/css2?family=Hind+Siliguri:wght@400;500;600;700&display=swap');
:root {
    --primary: #146356;
    --primary-dark: #0d4238;
    --primary-light: #e3f0ed;
    --accent: #d4a017;
    --bg: #f2f5f4;
    --card: #ffffff;
    --border: #e5e9e7;
    --text: #1f2a28;
    --muted: #6b7876;
    --danger: #c0392b;
    --danger-light: #fbe9e7;
    --success: #1e8449;
    --success-light: #e6f4ea;
    --radius: 16px;
    --radius-sm: 10px;
    --safe-bottom: env(safe-area-inset-bottom, 0px);
    --safe-top: env(safe-area-inset-top, 0px);
    --shadow-soft: 0 2px 12px rgba(13,66,56,.07);
    --shadow-float: 0 8px 28px rgba(13,66,56,.14);
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html { -webkit-text-size-adjust: 100%; }
body {
    margin: 0;
    font-family: 'Hind Siliguri', system-ui, sans-serif;
    background: var(--bg);
    color: var(--text);
    overscroll-behavior-y: contain;
}
a { text-decoration: none; color: inherit; }
button, input, select, textarea { font-family: inherit; }

/* ---------- Login ---------- */
.login-body {
    display: flex; align-items: center; justify-content: center;
    min-height: 100vh; min-height: 100dvh;
    background: linear-gradient(160deg, var(--primary-dark), var(--primary) 70%);
    padding: 20px;
}
.login-box {
    background: var(--card); padding: 36px 28px; border-radius: 22px;
    width: 100%; max-width: 380px; box-shadow: 0 24px 60px rgba(0,0,0,.3); text-align: center;
}
.login-box h1 { color: var(--primary); margin: 0 0 4px; font-size: 26px; }
.login-box .sub { color: var(--muted); margin-bottom: 24px; font-size: 14px; }
.login-box form { text-align: left; }
.login-box label { display: block; font-size: 13px; margin: 12px 0 6px; color: var(--muted); }
.login-box input {
    width: 100%; padding: 13px 14px; border: 1px solid var(--border); border-radius: 12px;
    font-family: inherit; font-size: 16px; background: #fafcfb;
}
.login-box input:focus { outline: none; border-color: var(--primary); background: #fff; }
.hint { margin-top: 16px; font-size: 12px; color: var(--muted); }

/* ---------- Layout ---------- */
.app-wrap { display: flex; min-height: 100vh; min-height: 100dvh; }
.sidebar {
    width: 240px; background: var(--primary-dark); color: #fff;
    display: flex; flex-direction: column; flex-shrink: 0;
    position: sticky; top: 0; height: 100vh; height: 100dvh;
    z-index: 25;
}
.sidebar .brand { font-size: 20px; font-weight: 700; padding: 22px 20px calc(18px + var(--safe-top)); border-bottom: 1px solid rgba(255,255,255,.1); }
.sidebar nav { flex: 1; padding: 10px 10px; overflow-y: auto; -webkit-overflow-scrolling: touch; }
.sidebar nav a {
    display: flex; align-items: center; gap: 12px; padding: 13px 14px; color: rgba(255,255,255,.85);
    font-size: 15px; border-radius: 12px; margin-bottom: 2px; transition: background .15s;
}
.sidebar nav a:active { background: rgba(255,255,255,.12); }
.sidebar nav a.active { background: rgba(255,255,255,.14); color: #fff; font-weight: 600; }
.sidebar nav a.active .icon { transform: scale(1.05); }
.sidebar-footer { padding: 14px 20px calc(16px + var(--safe-bottom)); border-top: 1px solid rgba(255,255,255,.1); }
.sidebar-footer a { color: rgba(255,255,255,.75); font-size: 14px; display: flex; align-items: center; gap: 8px; padding: 8px 0; }

.sidebar-overlay {
    display: none; position: fixed; inset: 0; background: rgba(10, 20, 18, .45);
    z-index: 20; opacity: 0; transition: opacity .25s;
}
.sidebar-overlay.show { display: block; opacity: 1; }

.main { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.topbar {
    display: flex; align-items: center; padding: calc(14px + var(--safe-top)) 20px 14px; background: var(--card);
    border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 5;
}
.menu-toggle {
    display: none; background: var(--bg); border: none; font-size: 20px; cursor: pointer;
    width: 40px; height: 40px; border-radius: 12px; align-items: center; justify-content: center;
}
.menu-toggle:active { background: var(--border); }
.spacer { flex: 1; }
.user-chip {
    font-size: 14px; color: var(--muted); background: var(--bg);
    padding: 8px 14px; border-radius: 20px; font-weight: 600;
}
.content { padding: 20px; flex: 1; }

/* ---------- Bottom app-nav (mobile only) ---------- */
.bottom-nav {
    display: none;
    position: fixed; left: 0; right: 0; bottom: 0;
    background: var(--card); border-top: 1px solid var(--border);
    padding-bottom: var(--safe-bottom);
    z-index: 18;
    box-shadow: 0 -4px 16px rgba(0,0,0,.06);
}
.bottom-nav-inner { display: flex; }
.bottom-nav a {
    flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center;
    gap: 3px; padding: 9px 2px 8px; color: var(--muted); font-size: 11px; font-weight: 500;
}
.bottom-nav a .bn-icon { font-size: 20px; line-height: 1; }
.bottom-nav a.active { color: var(--primary); font-weight: 700; }
.bottom-nav a:active { opacity: .6; }

/* ---------- Elements ---------- */
.page-title { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; flex-wrap: wrap; gap: 10px; }
.page-title h2 { margin: 0; font-size: 21px; }

.card {
    background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 18px; margin-bottom: 18px;
    box-shadow: var(--shadow-soft);
}

.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(155px, 1fr)); gap: 12px; margin-bottom: 20px; }
.stat-card {
    background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 16px; border-left: 4px solid var(--primary);
    transition: transform .12s, box-shadow .12s;
}
.stat-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-float); }
.stat-card .label { color: var(--muted); font-size: 12.5px; }
.stat-card .value { font-size: 21px; font-weight: 700; margin-top: 6px; color: var(--primary); word-break: break-word; }
.stat-card.warn { border-left-color: var(--danger); }
.stat-card.warn .value { color: var(--danger); }
.stat-card.positive { border-left-color: var(--success); background: var(--success-light); }
.stat-card.positive .value { color: var(--success); }

.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 6px;
    padding: 11px 20px; border-radius: 12px; border: none; cursor: pointer;
    font-family: inherit; font-size: 14.5px; font-weight: 600; text-align: center;
    min-height: 44px; transition: transform .08s, opacity .15s;
}
.btn:active { transform: scale(.97); }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-accent { background: var(--accent); color: #2a2200; }
.btn-outline { background: var(--card); border: 1px solid var(--border); color: var(--text); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-light { background: rgba(255,255,255,.2); color: #fff; border: 1px solid rgba(255,255,255,.35); }
.btn-light:hover { background: rgba(255,255,255,.3); }
.btn-sm { padding: 7px 14px; font-size: 12.5px; min-height: 36px; }
.btn-block { width: 100%; }
.btn-wa { background: #25D366; color: #fff; }

table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { padding: 11px 12px; border-bottom: 1px solid var(--border); text-align: left; }
th { background: #f0f3f2; color: var(--muted); font-weight: 600; font-size: 12.5px; white-space: nowrap; }
tr:active td, tr:hover td { background: #fafcfb; }
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; border-radius: var(--radius-sm); }
.text-right { text-align: right; }
.text-danger { color: var(--danger); font-weight: 600; }
.text-success { color: var(--success); font-weight: 600; }
.text-muted { color: var(--muted); }
.text-link { color: var(--primary); font-weight: 600; }
.text-link:hover { text-decoration: underline; }

.badge { display: inline-block; padding: 4px 11px; border-radius: 20px; font-size: 11.5px; font-weight: 600; }
.badge-success { background: var(--success-light); color: var(--success); }
.badge-danger { background: var(--danger-light); color: var(--danger); }
.badge-warn { background: #fff4e0; color: #b8860b; }

.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 14px; }
.form-group label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 6px; }
.form-group input, .form-group select, .form-group textarea {
    width: 100%; padding: 11px 13px; border: 1px solid var(--border); border-radius: 12px;
    font-family: inherit; font-size: 16px; background: #fafcfb; min-height: 44px;
}
.form-group textarea { min-height: unset; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    outline: none; border-color: var(--primary); background: #fff;
}
.form-actions { margin-top: 18px; display: flex; gap: 10px; flex-wrap: wrap; }

.alert { padding: 13px 16px; border-radius: var(--radius-sm); margin-bottom: 16px; font-size: 14px; }
.alert-success { background: var(--success-light); color: var(--success); }
.alert-error { background: var(--danger-light); color: var(--danger); }

.tabs { display: flex; gap: 4px; margin-bottom: 16px; border-bottom: 1px solid var(--border); overflow-x: auto; -webkit-overflow-scrolling: touch; }
.tabs a { padding: 10px 14px; font-size: 13.5px; border-bottom: 2px solid transparent; color: var(--muted); white-space: nowrap; }
.tabs a.active { color: var(--primary); border-color: var(--primary); font-weight: 600; }

.variant-row { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr 1fr 1fr 0.8fr 40px; gap: 8px; margin-bottom: 8px; align-items: center; }
.variant-row input { padding: 9px 10px; border: 1px solid var(--border); border-radius: 10px; font-size: 13px; min-height: 40px; }
.item-row { display: grid; grid-template-columns: 2.5fr 1fr 1fr 1fr auto; gap: 8px; margin-bottom: 8px; align-items: center; }
.item-row select, .item-row input { padding: 9px 10px; border: 1px solid var(--border); border-radius: 10px; font-size: 13px; min-height: 40px; }

.remove-row { background: var(--danger); color: #fff; border: none; border-radius: 10px; width: 36px; height: 36px; cursor: pointer; font-size: 16px; }
.remove-row:active { opacity: .7; }

.totals-box { text-align: right; margin-top: 14px; font-size: 15px; }
.totals-box div { margin-bottom: 5px; }
.totals-box .grand { font-size: 19px; font-weight: 700; color: var(--primary); }

/* ============================================================
   নতুন: হোমপেইজ ডিজাইন — হিরো কার্ড, কুইক অ্যাকশন, দুই-কলাম লেআউট
   ============================================================ */
.hero-card {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, #1a7a68 100%);
    border: none; color: #fff; margin-bottom: 18px;
    box-shadow: var(--shadow-float);
    overflow: hidden;
    position: relative;
}
.hero-card::before {
    content: '';
    position: absolute; right: -40px; top: -40px;
    width: 200px; height: 200px; border-radius: 50%;
    background: rgba(255,255,255,.06);
}
.hero-inner {
    display: flex; gap: 24px; align-items: center; justify-content: space-between;
    flex-wrap: wrap; position: relative;
}
.hero-main { min-width: 220px; }
.hero-label { font-size: 13px; opacity: .85; margin-bottom: 6px; }
.hero-value {
    font-size: 34px; font-weight: 700; letter-spacing: .5px;
    text-shadow: 0 2px 8px rgba(0,0,0,.2); margin-bottom: 12px;
    word-break: break-word;
}
.hero-side { display: flex; flex-direction: column; gap: 8px; min-width: 230px; }
.hero-side-row {
    display: flex; justify-content: space-between; gap: 16px;
    background: rgba(255,255,255,.1); border-radius: var(--radius-sm);
    padding: 8px 14px; font-size: 13px;
}
.hero-side-row .label { opacity: .85; }
.hero-side-row .hero-val { font-weight: 700; font-size: 15px; }

/* কুইক অ্যাকশন বাটন */
.quick-actions {
    display: grid; grid-template-columns: repeat(5, 1fr); gap: 10px;
    margin-bottom: 20px;
}
.quick-btn {
    display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 6px;
    background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 14px 8px; font-size: 13px; font-weight:600; color: var(--text);
    transition: transform .12s, box-shadow .12s, border-color .12s;
}
.quick-btn:hover { transform: translateY(-3px); box-shadow: var(--shadow-float); border-color: var(--primary); color: var(--primary); }
.quick-btn:active { transform: scale(.97); }
.qa-icon { font-size: 24px; }

/* দুই-কলাম লেআউট (ডেস্কটপে) */
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.two-col .card { margin-bottom: 0; }
@media (max-width: 980px) { .two-col { grid-template-columns: 1fr; } .two-col .card { margin-bottom: 18px; } }

/* ---------- Mobile: app-like overhaul ---------- */
@media (max-width: 860px) {
    .sidebar {
        position: fixed; left: -260px; top: 0; width: 260px; max-width: 82vw;
        transition: left .25s ease; border-radius: 0 20px 20px 0; box-shadow: 8px 0 30px rgba(0,0,0,.25);
    }
    .sidebar.open { left: 0; }
    .menu-toggle { display: flex; }
    .variant-row, .item-row { grid-template-columns: 1fr; }

    .content { padding: 14px 14px calc(84px + var(--safe-bottom)); }
    .topbar { padding: calc(12px + var(--safe-top)) 14px 12px; }
    .card { border-radius: 16px; padding: 15px; }
    .page-title h2 { font-size: 19px; }

    .stat-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
    .stat-card { padding: 13px; }
    .stat-card .value { font-size: 18px; }

    .hero-inner { flex-direction: column; align-items: stretch; gap: 14px; }
    .hero-value { font-size: 28px; }
    .hero-side { min-width: 0; }

    .quick-actions { grid-template-columns: repeat(3, 1fr); }

    .btn { width: auto; }
    .form-actions .btn { flex: 1; min-width: 120px; }

    .bottom-nav { display: block; }
    .app-wrap { padding-bottom: 0; }
}

@media (max-width: 420px) {
    .stat-grid { grid-template-columns: 1fr 1fr; }
    .quick-actions { grid-template-columns: repeat(2, 1fr); }
    th, td { padding: 9px 8px; font-size: 13px; }
}

/* ---------- Print (used for PDF export via browser "Print > Save as PDF") ---------- */
@media print {
    .sidebar, .topbar, .bottom-nav, .sidebar-overlay, .no-print { display: none !important; }
    .app-wrap, .main, .content { display: block; padding: 0; margin: 0; width: 100%; }
    body { background: #fff; }
    .card { border: none; box-shadow: none; padding: 0; border-radius: 0; }
    .hero-card { background: none; color: #000; }
    .hero-side-row { background: none; border: 1px solid #ddd; }
    table { font-size: 12px; }
}