/* ============================================
   Invoice Management System — Stylesheet
   Theme: "Ledger" — deep teal ink + brass accent
   AdorshoLipi Bengali Font
   ============================================ */

@import url('https://fonts.maateen.me/adorsho-lipi/font.css');

:root {
    /* Core ink & accent — inspired by ledger books and brass seals */
    --primary:       #12302f;   /* deep teal-charcoal ink */
    --primary-light: #1c4a48;
    --primary-dark:  #0a1f1e;
    --accent:        #b5822c;   /* brass */
    --accent-light:  #d4a44a;
    --accent-dark:   #8f6620;

    --success:  #1f7a5c;
    --success-bg: #e6f3ee;
    --danger:   #c1442e;
    --danger-bg: #fbeae7;
    --warning:  #b5822c;
    --warning-bg: #f8f0e0;
    --info:     #2b6f8f;
    --info-bg:  #e6f1f5;

    --bg:        #f3f5f4;
    --card-bg:   #ffffff;
    --border:    #e0e5e2;
    --text:      #1a2b29;
    --text-muted:#68766f;

    --shadow:    0 1px 2px rgba(18,48,47,.05), 0 3px 14px rgba(18,48,47,.06);
    --shadow-lg: 0 14px 34px rgba(18,48,47,.16);
    --radius:    14px;
    --radius-sm: 9px;
    --transition: all 0.2s ease;
}

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html { scroll-behavior: smooth; }

body {
    font-family: "AdorshoLipi", "SolaimanLipi", Arial, sans-serif;
    background: var(--bg);
    background-image:
        radial-gradient(circle at 100% 0%, rgba(181,130,44,0.05) 0%, transparent 45%),
        radial-gradient(circle at 0% 100%, rgba(18,48,47,0.04) 0%, transparent 40%);
    background-attachment: fixed;
    color: var(--text);
    font-size: 15px;
    line-height: 1.6;
}

/* ---- Navbar ---- */
.navbar {
    background: linear-gradient(120deg, var(--primary-dark) 0%, var(--primary) 55%, var(--primary-light) 100%);
    color: #fff;
    display: flex;
    align-items: center;
    padding: 0 24px;
    height: 64px;
    box-shadow: 0 4px 18px rgba(10,31,30,0.25);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 2px solid var(--accent);
}
.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 18px;
    font-weight: 700;
    letter-spacing: 0.3px;
    margin-right: 30px;
    white-space: nowrap;
}
.nav-brand i {
    font-size: 20px;
    color: var(--accent-light);
    background: rgba(255,255,255,0.08);
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
}
.nav-links {
    display: flex;
    align-items: center;
    gap: 2px;
    flex: 1;
}
.nav-links a {
    color: rgba(255,255,255,0.78);
    text-decoration: none;
    padding: 9px 15px;
    border-radius: 999px;
    font-size: 13.5px;
    display: flex;
    align-items: center;
    gap: 7px;
    transition: var(--transition);
}
.nav-links a i { font-size: 13px; color: var(--accent-light); opacity: .85; }
.nav-links a:hover {
    background: rgba(255,255,255,0.10);
    color: #fff;
}
.nav-links a.active {
    background: var(--accent);
    color: #241a05;
    font-weight: 700;
}
.nav-links a.active i { color: #241a05; opacity: 1; }
.nav-toggle {
    display: none;
    background: none;
    border: none;
    color: #fff;
    font-size: 20px;
    cursor: pointer;
    margin-left: auto;
    padding: 6px 10px;
}

/* ---- Layout ---- */
.main-wrapper {
    max-width: 1300px;
    margin: 30px auto;
    padding: 0 18px;
}

/* ---- Cards ---- */
.card {
    background: var(--card-bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    padding: 24px;
    margin-bottom: 20px;
}
.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
    padding-bottom: 14px;
    border-bottom: 2px solid var(--border);
    flex-wrap: wrap;
    gap: 10px;
}
.card-title {
    font-size: 16.5px;
    font-weight: 700;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 9px;
}
.card-title i {
    color: #fff;
    background: var(--accent);
    width: 30px;
    height: 30px;
    border-radius: 9px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
}

/* ---- Stat Cards (Dashboard) ---- */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
    gap: 18px;
    margin-bottom: 24px;
}
.stat-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    padding: 20px 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    border-left: 4px solid var(--primary);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}
.stat-card::after{
    content:'';
    position:absolute; right:-24px; top:-24px;
    width:80px; height:80px; border-radius:50%;
    background: currentColor; opacity:.05;
}
.stat-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-3px); }
.stat-card.green  { border-color: var(--success); color: var(--success); }
.stat-card.orange { border-color: var(--accent);  color: var(--accent-dark); }
.stat-card.red    { border-color: var(--danger);  color: var(--danger); }
.stat-card.blue   { border-color: var(--info);    color: var(--info); }
.stat-icon {
    width: 50px; height: 50px;
    border-radius: 13px;
    display: flex; align-items: center; justify-content: center;
    font-size: 20px;
    flex-shrink: 0;
}
.stat-card.green  .stat-icon { background: var(--success-bg); color: var(--success); }
.stat-card.orange .stat-icon { background: var(--warning-bg); color: var(--accent-dark); }
.stat-card.red    .stat-icon { background: var(--danger-bg);  color: var(--danger); }
.stat-card.blue   .stat-icon { background: var(--info-bg);    color: var(--info); }
.stat-info .label { font-size: 12.5px; color: var(--text-muted); margin-bottom: 3px; }
.stat-info .value { font-size: 21px; font-weight: 700; color: var(--text); }

/* ---- Buttons ---- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 9px 20px;
    border-radius: var(--radius-sm);
    border: none;
    cursor: pointer;
    font-family: "AdorshoLipi", sans-serif;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    white-space: nowrap;
}
.btn-primary   { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-light); }
.btn-success   { background: var(--success); color: #fff; }
.btn-success:hover { background: #175f49; }
.btn-danger    { background: var(--danger); color: #fff; }
.btn-danger:hover { background: #a3341f; }
.btn-warning   { background: var(--accent); color: #fff; }
.btn-warning:hover { background: var(--accent-dark); }
.btn-info      { background: var(--info); color: #fff; }
.btn-info:hover { background: #235a73; }
.btn-outline   { background: transparent; border: 2px solid var(--primary); color: var(--primary); }
.btn-outline:hover { background: var(--primary); color: #fff; }
.btn-sm { padding: 5px 12px; font-size: 13px; }
.btn-lg { padding: 12px 28px; font-size: 16px; }

/* ---- Forms ---- */
.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 16px;
}
.form-group { display: flex; flex-direction: column; }
.form-group label {
    font-size: 13px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 5px;
}
.form-group label .required { color: var(--danger); }
.form-control {
    width: 100%;
    padding: 9px 13px;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    font-family: "AdorshoLipi", sans-serif;
    font-size: 14px;
    color: var(--text);
    background: #fff;
    transition: var(--transition);
    outline: none;
}
.form-control:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(181,130,44,0.15);
}
.form-control:read-only { background: #f7f8f7; color: var(--text-muted); }
select.form-control { cursor: pointer; }

/* ---- Autocomplete ---- */
.autocomplete-wrapper { position: relative; }
.autocomplete-list {
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    background: #fff;
    border: 1.5px solid var(--accent);
    border-top: none;
    border-radius: 0 0 var(--radius-sm) var(--radius-sm);
    max-height: 200px;
    overflow-y: auto;
    z-index: 500;
    box-shadow: var(--shadow-lg);
    display: none;
}
.autocomplete-list.show { display: block; }
.autocomplete-item {
    padding: 9px 14px;
    cursor: pointer;
    font-size: 14px;
    border-bottom: 1px solid #f0f0f0;
    transition: background 0.15s;
}
.autocomplete-item:hover, .autocomplete-item.active {
    background: var(--bg);
    color: var(--primary);
}
.autocomplete-item small { color: var(--text-muted); font-size: 12px; display: block; }

/* ---- Invoice Items Table ---- */
.items-table-wrap { overflow-x: auto; }
.items-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}
.items-table th {
    background: var(--primary);
    color: #fff;
    padding: 11px 12px;
    text-align: left;
    font-weight: 600;
    font-size: 12.5px;
    white-space: nowrap;
    letter-spacing: .3px;
}
.items-table th:first-child { border-top-left-radius: var(--radius-sm); }
.items-table th:last-child { border-top-right-radius: var(--radius-sm); }
.items-table td {
    padding: 9px 10px;
    border-bottom: 1px solid var(--border);
    vertical-align: middle;
}
.items-table tr:last-child td { border-bottom: none; }
.items-table tbody tr:hover { background: #f8faf9; }
.items-table .item-number {
    font-weight: 700;
    color: var(--accent-dark);
    text-align: center;
    width: 40px;
}
.remove-item-btn {
    background: none;
    border: none;
    color: var(--danger);
    cursor: pointer;
    font-size: 16px;
    padding: 4px 8px;
    border-radius: 4px;
    transition: var(--transition);
}
.remove-item-btn:hover { background: var(--danger-bg); }

/* ---- Totals Section ---- */
.totals-section {
    display: flex;
    justify-content: flex-end;
    margin-top: 10px;
}
.totals-table {
    width: 100%;
    max-width: 380px;
    border-collapse: collapse;
}
.totals-table td {
    padding: 8px 14px;
    font-size: 15px;
}
.totals-table .label-col {
    color: var(--text-muted);
    text-align: right;
    width: 55%;
}
.totals-table .value-col {
    text-align: right;
    font-weight: 600;
    color: var(--text);
}
.totals-table .grand-row td {
    background: var(--primary);
    color: #fff;
    font-size: 17px;
    font-weight: 700;
    border-radius: var(--radius-sm);
}
.totals-table .due-row td {
    background: var(--danger-bg);
    color: var(--danger);
    font-size: 16px;
    font-weight: 700;
}

/* ---- Data Tables ---- */
.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}
.data-table th {
    background: var(--primary);
    color: #fff;
    padding: 12px 14px;
    text-align: left;
    font-weight: 600;
    font-size: 12.5px;
    letter-spacing: .3px;
}
.data-table th:first-child { border-top-left-radius: var(--radius-sm); }
.data-table th:last-child { border-top-right-radius: var(--radius-sm); }
.data-table td {
    padding: 11px 14px;
    border-bottom: 1px solid var(--border);
    vertical-align: middle;
}
.data-table tbody tr:hover { background: #f8faf9; }
.data-table .badge {
    display: inline-block;
    padding: 3px 11px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}
.badge-success { background: var(--success-bg); color: var(--success); }
.badge-danger  { background: var(--danger-bg);  color: var(--danger); }
.badge-warning { background: var(--warning-bg); color: var(--accent-dark); }

/* ---- Alerts ---- */
.alert {
    padding: 13px 18px;
    border-radius: var(--radius-sm);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
}
.alert-success { background: var(--success-bg); color: var(--success); border-left: 4px solid var(--success); }
.alert-danger  { background: var(--danger-bg);  color: var(--danger);  border-left: 4px solid var(--danger); }
.alert-info    { background: var(--info-bg);    color: var(--info);    border-left: 4px solid var(--info); }

/* ---- Search Box ---- */
.search-box {
    position: relative;
    display: flex;
    align-items: center;
}
.search-box input {
    padding-left: 38px;
}
.search-box .search-icon {
    position: absolute;
    left: 12px;
    color: var(--text-muted);
    font-size: 14px;
}

/* ---- Page Title ---- */
.page-title {
    margin-bottom: 22px;
    position: relative;
    padding-bottom: 14px;
}
.page-title::after {
    content: '';
    position: absolute;
    left: 0; bottom: 0;
    width: 64px;
    height: 3px;
    background: var(--accent);
    border-radius: 2px;
}
.page-title::before {
    content: '';
    position: absolute;
    left: 0; bottom: 6px;
    width: 30px;
    height: 1px;
    background: var(--border);
}
.page-title h2 {
    font-size: 22px;
    font-weight: 700;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 10px;
}
.page-title h2 i { color: var(--accent); }
.page-title p {
    color: var(--text-muted);
    font-size: 14px;
    margin-top: 4px;
}

/* ---- Section Divider ---- */
.section-divider {
    border: none;
    border-top: 1.5px solid var(--border);
    margin: 20px 0;
}

/* ---- Loading Spinner ---- */
.spinner {
    display: inline-block;
    width: 18px; height: 18px;
    border: 2px solid rgba(0,0,0,0.1);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ============================================
   PRINT STYLES
   ============================================ */
@media print {
    .navbar, .no-print, .btn, footer { display: none !important; }
    body { background: #fff; font-family: "AdorshoLipi", Arial, sans-serif; font-size: 13px; }
    .main-wrapper { max-width: 100%; margin: 0; padding: 0; }
    .print-container { padding: 10px; }

    .print-header {
        text-align: center;
        border-bottom: 2.5px double #12302f;
        padding-bottom: 10px;
        margin-bottom: 14px;
    }
    .print-header .shop-name {
        font-size: 22px;
        font-weight: 700;
        color: #12302f;
    }
    .print-header .shop-info { font-size: 13px; color: #555; }

    .print-invoice-meta {
        display: flex;
        justify-content: space-between;
        margin-bottom: 14px;
        background: #f3f5f4;
        padding: 10px 14px;
        border-radius: 6px;
    }
    .print-customer-info {
        border: 1.5px solid #e0e5e2;
        border-radius: 6px;
        padding: 10px 14px;
        margin-bottom: 14px;
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 6px;
    }
    .print-customer-info .field label { font-size: 11px; color: #68766f; }
    .print-customer-info .field span  { font-size: 14px; font-weight: 600; }

    .print-items-table {
        width: 100%;
        border-collapse: collapse;
        margin-bottom: 14px;
        font-size: 13px;
    }
    .print-items-table th {
        background: #12302f;
        color: #fff;
        padding: 8px 10px;
        text-align: left;
    }
    .print-items-table td {
        padding: 7px 10px;
        border-bottom: 1px solid #e0e5e2;
    }

    .print-totals { display: flex; justify-content: flex-end; margin-top: 8px; }
    .print-totals table { width: 260px; border-collapse: collapse; }
    .print-totals td { padding: 6px 12px; font-size: 13px; }
    .print-totals .grand-total td {
        background: #12302f; color: #fff; font-size: 15px; font-weight: 700;
    }
    .print-totals .due-total td {
        background: #fbeae7; color: #c1442e; font-size: 14px; font-weight: 700;
    }

    .print-signatures {
        display: grid;
        grid-template-columns: 1fr 1fr 1fr;
        gap: 20px;
        margin-top: 40px;
        border-top: 1px solid #e0e5e2;
        padding-top: 14px;
    }
    .signature-box { text-align: center; }
    .signature-box .sig-line {
        border-top: 1.5px solid #555;
        margin: 0 20px;
        padding-top: 5px;
        font-size: 12px;
        color: #555;
    }

    @page {
        size: A4;
        margin: 15mm 12mm 15mm 12mm;
    }
}

/* ---- Responsive ---- */
@media (max-width: 768px) {
    .nav-links {
        display: none; flex-direction: column;
        position: absolute; top: 64px; left: 0; right: 0;
        background: var(--primary-dark);
        padding: 10px;
        z-index: 999;
    }
    .nav-links.open { display: flex; }
    .nav-links a { border-radius: var(--radius-sm); }
    .nav-toggle { display: block; }
    .form-row { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .main-wrapper { margin: 14px auto; padding: 0 10px; }
    .card { padding: 16px; }
}
@media (max-width: 480px) {
    .stats-grid { grid-template-columns: 1fr; }
}