/* ============================================================
   JD ICONS — Inline SVG icon system
   ============================================================ */
.jd-icon {
    display: inline-block;
    vertical-align: middle;
    flex-shrink: 0;
    stroke-width: 1.75;
}
/* Sidebar */
.sidebar-link .jd-icon { opacity: .82; }
.sidebar-link:hover .jd-icon,
.sidebar-link.active .jd-icon { opacity: 1; }

/* Smooth rotation for collapse arrow */
.toggle-arrow svg { transition: transform .25s ease; }

/* Row expand button */
.expand-btn { background:none; border:none; cursor:pointer; padding:3px 6px; border-radius:4px; color:var(--text-lt); transition:var(--trans); display:inline-flex; align-items:center; }
.expand-btn:hover { background:var(--navy); color:#fff; }
.expand-btn svg { width:13px; height:13px; transition:transform .2s; }

/* ============================================================
   JD BILLING - Main Stylesheet
   Chemical Industry Billing Software
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
    --navy:       #1a237e;
    --navy-dark:  #0d1257;
    --navy-mid:   #283593;
    --accent:     #1565c0;
    --accent-lt:  #1976d2;
    --accent-glow:#42a5f5;
    --sidebar-w:  220px;
    --header-h:   56px;

    --bg:         #f0f2f8;
    --card:       #ffffff;
    --card-alt:   #f8f9fd;
    --border:     #e0e4f0;
    --border-md:  #c5cae9;

    --text:       #1a1f36;
    --text-md:    #3d4568;
    --text-lt:    #6b7399;
    --text-inv:   #ffffff;

    --green:      #2e7d32;
    --green-lt:   #e8f5e9;
    --red:        #c62828;
    --red-lt:     #ffebee;
    --amber:      #e65100;
    --amber-lt:   #fff3e0;
    --blue-lt:    #e3f2fd;

    --radius:     10px;
    --radius-lg:  16px;
    --shadow:     0 2px 8px rgba(26,35,126,.08);
    --shadow-md:  0 4px 20px rgba(26,35,126,.12);
    --shadow-lg:  0 8px 40px rgba(26,35,126,.18);

    --font:       'Plus Jakarta Sans', sans-serif;
    --mono:       'JetBrains Mono', monospace;
    --trans:      all .2s ease;
}

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

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    font-size: 14px;
    line-height: 1.6;
    overflow-x: hidden;
}

/* ---- SCROLLBAR ---- */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border-md); border-radius: 3px; }

/* ============================================================
   LAYOUT
   ============================================================ */
.app-wrapper { display: flex; min-height: 100vh; }

/* HEADER */
.app-header {
    position: fixed; top: 0; left: 0; right: 0;
    height: var(--header-h);
    background: var(--navy-dark);
    display: flex; align-items: center; padding: 0 20px;
    z-index: 1000;
    box-shadow: 0 2px 12px rgba(0,0,0,.3);
}

.header-brand {
    display: flex; align-items: center; gap: 10px;
    color: #fff; font-size: 18px; font-weight: 700;
    letter-spacing: .5px;
}
.header-brand span { color: var(--accent-glow); }
.header-hamburger {
    background: none; border: none; color: #fff;
    cursor: pointer; padding: 6px; margin-right: 10px;
    border-radius: 6px; transition: var(--trans);
}
.header-hamburger:hover { background: rgba(255,255,255,.1); }
.header-right {
    margin-left: auto; display: flex; align-items: center; gap: 16px;
}
.year-badge {
    background: rgba(255,255,255,.1); color: var(--accent-glow);
    padding: 4px 12px; border-radius: 20px;
    font-size: 12px; font-weight: 600; font-family: var(--mono);
}
.header-user {
    display: flex; align-items: center; gap: 8px;
    color: rgba(255,255,255,.85); font-size: 13px;
}
.header-avatar {
    width: 32px; height: 32px; border-radius: 50%;
    background: var(--accent); display: flex;
    align-items: center; justify-content: center;
    color: #fff; font-weight: 700; font-size: 13px;
}
.header-logout {
    color: rgba(255,255,255,.7); text-decoration: none;
    font-size: 12px; padding: 5px 12px;
    border: 1px solid rgba(255,255,255,.2); border-radius: 6px;
    transition: var(--trans);
}
.header-logout:hover { background: rgba(255,255,255,.1); color: #fff; }

/* SIDEBAR */
.app-sidebar {
    position: fixed; top: var(--header-h); left: 0;
    width: var(--sidebar-w); height: calc(100vh - var(--header-h));
    background: var(--navy);
    overflow-y: auto; overflow-x: hidden;
    transition: width .25s ease;
    z-index: 900;
}
.app-sidebar.collapsed { width: 56px; }

.sidebar-section { padding: 10px 0; }
.sidebar-label {
    font-size: 10px; font-weight: 700; letter-spacing: 1.2px;
    text-transform: uppercase; color: rgba(255,255,255,.35);
    padding: 6px 18px; display: block;
    transition: opacity .2s;
}
.app-sidebar.collapsed .sidebar-label { opacity: 0; height: 0; overflow: hidden; padding: 0; margin: 0; }

.sidebar-link {
    display: flex; align-items: center; gap: 10px;
    padding: 10px 18px;
    color: rgba(255,255,255,.72);
    text-decoration: none;
    font-size: 13px; font-weight: 500;
    transition: var(--trans);
    position: relative; white-space: nowrap;
}
.sidebar-link:hover { background: rgba(255,255,255,.08); color: #fff; }
.sidebar-link.active {
    background: rgba(66,165,245,.2);
    color: var(--accent-glow);
    border-right: 3px solid var(--accent-glow);
}
.sidebar-link .si { font-size: 16px; width: 20px; text-align: center; flex-shrink: 0; }
.sidebar-link span.lbl { transition: opacity .2s; }
.app-sidebar.collapsed .sidebar-link span.lbl { opacity: 0; width: 0; overflow: hidden; }
.app-sidebar.collapsed .sidebar-link { justify-content: center; padding: 11px 0; }
.app-sidebar.collapsed .sidebar-link .si { width: 22px; text-align: center; font-size: 17px; }

.sidebar-submenu { display: none; }
.sidebar-submenu.open { display: block; }
.sidebar-submenu .sidebar-link {
    padding-left: 44px; font-size: 12.5px;
    color: rgba(255,255,255,.6);
}

/* MAIN CONTENT */
.app-main {
    margin-left: var(--sidebar-w);
    margin-top: var(--header-h);
    min-height: calc(100vh - var(--header-h));
    padding: 24px;
    transition: margin-left .25s ease;
}
.app-main.expanded { margin-left: 56px; }

/* ============================================================
   PAGE HEADER
   ============================================================ */
.page-header {
    display: flex; align-items: center; justify-content: space-between;
    margin-bottom: 24px;
}
.page-title { font-size: 22px; font-weight: 700; color: var(--text); }
.page-title small { display: block; font-size: 13px; color: var(--text-lt); font-weight: 400; }
.breadcrumb {
    font-size: 12px; color: var(--text-lt);
    display: flex; align-items: center; gap: 6px; margin-top: 4px;
}
.breadcrumb a { color: var(--accent); text-decoration: none; }

/* ============================================================
   CARDS
   ============================================================ */
.card {
    background: var(--card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    overflow: hidden;
}
.card-header {
    padding: 16px 24px;
    border-bottom: 1px solid var(--border);
    display: flex; align-items: center; justify-content: space-between;
    background: var(--card-alt);
}
.card-title {
    font-size: 15px; font-weight: 700; color: var(--text);
    display: flex; align-items: center; gap: 8px;
}
.card-body { padding: 24px; }
.card-footer {
    padding: 14px 24px;
    border-top: 1px solid var(--border);
    background: var(--card-alt);
    display: flex; align-items: center; justify-content: flex-end; gap: 10px;
}

/* ============================================================
   DASHBOARD STATS
   ============================================================ */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}
.stat-card {
    background: var(--card);
    border-radius: var(--radius-lg);
    padding: 20px 22px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    position: relative; overflow: hidden;
    transition: var(--trans);
}
.stat-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.stat-card::before {
    content: ''; position: absolute;
    top: 0; left: 0; right: 0; height: 3px;
    background: var(--accent);
}
.stat-card.green::before { background: var(--green); }
.stat-card.red::before { background: var(--red); }
.stat-card.amber::before { background: var(--amber); }
.stat-icon {
    width: 44px; height: 44px; border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    font-size: 20px; margin-bottom: 14px;
    background: var(--blue-lt); color: var(--accent);
}
.stat-card.green .stat-icon { background: var(--green-lt); color: var(--green); }
.stat-card.red .stat-icon { background: var(--red-lt); color: var(--red); }
.stat-card.amber .stat-icon { background: var(--amber-lt); color: var(--amber); }
.stat-value { font-size: 22px; font-weight: 800; font-family: var(--mono); color: var(--text); }
.stat-label { font-size: 12px; color: var(--text-lt); font-weight: 500; margin-top: 2px; }

/* ============================================================
   FORMS
   ============================================================ */
.form-section { margin-bottom: 28px; }
.form-section-title {
    font-size: 13px; font-weight: 700; color: var(--navy);
    text-transform: uppercase; letter-spacing: .8px;
    padding-bottom: 10px; margin-bottom: 16px;
    border-bottom: 2px solid var(--accent);
    display: flex; align-items: center; gap: 8px;
}
.form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}
.form-grid-3 { grid-template-columns: repeat(3, 1fr); }
.form-grid-4 { grid-template-columns: repeat(4, 1fr); }
.form-col-full { grid-column: 1 / -1; }

.form-group { display: flex; flex-direction: column; gap: 5px; }
.form-label {
    font-size: 12px; font-weight: 600; color: var(--text-md);
    display: flex; align-items: center; gap: 4px;
}
.form-label .req { color: var(--red); }

.form-control {
    border: 1.5px solid var(--border);
    border-radius: var(--radius);
    padding: 9px 12px;
    font-size: 13.5px; font-family: var(--font);
    color: var(--text);
    background: var(--card);
    outline: none;
    transition: var(--trans);
    width: 100%;
}
.form-control:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(21,101,192,.12); }
.form-control:disabled, .form-control[readonly] {
    background: var(--card-alt); color: var(--text-lt); cursor: default;
}
.form-control.error { border-color: var(--red); }
textarea.form-control { resize: vertical; min-height: 70px; }
select.form-control { cursor: pointer; }

/* ============================================================
   TABLES
   ============================================================ */
.table-responsive { overflow-x: auto; }
.table {
    width: 100%; border-collapse: collapse; font-size: 13px;
}
.table th {
    background: #1a237e; color: #fff;
    padding: 11px 14px; font-weight: 600; font-size: 12px;
    letter-spacing: .4px; white-space: nowrap; text-align: left;
}
.table th .sort-btn {
    background: none; border: none; color: rgba(255,255,255,.7);
    cursor: pointer; font-size: 10px; margin-left: 4px;
}
.table td {
    padding: 10px 14px; border-bottom: 1px solid var(--border);
    color: var(--text-md); vertical-align: middle;
}
.table tbody tr:hover { background: var(--card-alt); }
.table tbody tr.expanded-row { background: #e8eaf6; }
.table-actions { display: flex; gap: 6px; }

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 9px 18px; border-radius: var(--radius);
    font-size: 13px; font-weight: 600; font-family: var(--font);
    cursor: pointer; border: none; transition: var(--trans);
    text-decoration: none; white-space: nowrap;
}
.btn-primary { background: var(--navy); color: #fff; }
.btn-primary:hover { background: var(--navy-mid); transform: translateY(-1px); box-shadow: 0 4px 14px rgba(26,35,126,.35); }
.btn-accent { background: var(--accent-lt); color: #fff; }
.btn-accent:hover { background: var(--accent); }
.btn-success { background: var(--green); color: #fff; }
.btn-success:hover { background: #1b5e20; }
.btn-danger { background: var(--red); color: #fff; }
.btn-danger:hover { background: #8b0000; }
.btn-warning { background: var(--amber); color: #fff; }
.btn-outline {
    background: transparent; color: var(--navy);
    border: 1.5px solid var(--navy);
}
.btn-outline:hover { background: var(--navy); color: #fff; }
.btn-sm { padding: 5px 12px; font-size: 12px; }
.btn-icon {
    padding: 6px 8px; border-radius: 7px; background: none;
    border: 1.5px solid var(--border); color: var(--text-md);
    cursor: pointer; transition: var(--trans); font-size: 13px;
}
.btn-icon:hover { background: var(--navy); color: #fff; border-color: var(--navy); }
.btn-icon.danger:hover { background: var(--red); border-color: var(--red); }
.btn-icon.success:hover { background: var(--green); border-color: var(--green); }

/* ============================================================
   BADGES & STATUS
   ============================================================ */
.badge {
    display: inline-flex; align-items: center;
    padding: 3px 9px; border-radius: 20px;
    font-size: 11px; font-weight: 700;
}
.badge-success { background: var(--green-lt); color: var(--green); }
.badge-danger { background: var(--red-lt); color: var(--red); }
.badge-warning { background: var(--amber-lt); color: var(--amber); }
.badge-info { background: var(--blue-lt); color: var(--accent); }
.badge-secondary { background: #eceff1; color: #546e7a; }

/* ============================================================
   FILTER BAR
   ============================================================ */
.filter-bar {
    display: flex; align-items: center; gap: 10px;
    flex-wrap: wrap; margin-bottom: 16px;
}
.filter-bar .form-control { min-width: 180px; }
.filter-group { display: flex; align-items: center; gap: 6px; }

/* ============================================================
   PRODUCT LINES (Bill Items)
   ============================================================ */
.product-lines-table {
    width: 100%; border-collapse: collapse; margin-bottom: 12px;
}
.product-lines-table th {
    background: #e8eaf6; color: var(--navy);
    font-size: 11px; font-weight: 700; padding: 8px 10px;
    text-transform: uppercase; letter-spacing: .5px; border: 1px solid var(--border);
}
.product-lines-table td {
    padding: 6px 6px; border: 1px solid var(--border); vertical-align: middle;
}
.product-lines-table td .form-control { padding: 7px 8px; font-size: 13px; }

/* ============================================================
   TAX SUMMARY BOX
   ============================================================ */
.tax-summary {
    margin-top: 12px;
    background: var(--card-alt);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px 20px;
}
.tax-row {
    display: flex; justify-content: space-between;
    padding: 5px 0; font-size: 13.5px;
    border-bottom: 1px dashed var(--border);
}
.tax-row:last-child { border-bottom: none; }
.tax-row.total {
    font-size: 16px; font-weight: 800;
    color: var(--navy); padding-top: 10px;
}
.tax-row span { font-family: var(--mono); }

/* ============================================================
   ALERTS & FLASH
   ============================================================ */
.alert {
    padding: 12px 16px; border-radius: var(--radius);
    font-size: 13px; margin-bottom: 16px;
    display: flex; align-items: center; gap: 10px;
    animation: slideDown .3s ease;
}
.alert-success { background: var(--green-lt); color: var(--green); border: 1px solid #a5d6a7; }
.alert-danger { background: var(--red-lt); color: var(--red); border: 1px solid #ef9a9a; }
.alert-warning { background: var(--amber-lt); color: var(--amber); border: 1px solid #ffcc80; }
.alert-info { background: var(--blue-lt); color: var(--accent); border: 1px solid #90caf9; }

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ============================================================
   MODALS
   ============================================================ */
.modal-overlay {
    position: fixed; inset: 0;
    background: rgba(13,18,87,.5); backdrop-filter: blur(3px);
    z-index: 2000; display: flex; align-items: center; justify-content: center;
    opacity: 0; pointer-events: none; transition: opacity .25s;
}
.modal-overlay.active { opacity: 1; pointer-events: all; }
.modal {
    background: var(--card); border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg); max-width: 500px; width: 92%;
    max-height: 90vh; overflow-y: auto;
    transform: scale(.95); transition: transform .25s;
}
.modal-overlay.active .modal { transform: scale(1); }
.modal-header {
    padding: 18px 22px; background: var(--navy);
    display: flex; align-items: center; justify-content: space-between;
}
.modal-title { color: #fff; font-size: 15px; font-weight: 700; }
.modal-close {
    background: none; border: none; color: rgba(255,255,255,.7);
    cursor: pointer; font-size: 18px; transition: var(--trans);
}
.modal-close:hover { color: #fff; }
.modal-body { padding: 22px; }
.modal-footer { padding: 14px 22px; border-top: 1px solid var(--border); display: flex; justify-content: flex-end; gap: 10px; }

/* ============================================================
   PRINT BILL
   ============================================================ */
@media print {
    .app-header, .app-sidebar, .no-print { display: none !important; }
    .app-main { margin: 0; padding: 0; }
    .bill-print { display: block !important; }
}
.bill-print { display: none; }

/* ============================================================
   UTILITIES
   ============================================================ */
.text-right { text-align: right; }
.text-center { text-align: center; }
.text-sm { font-size: 12px; }
.text-muted { color: var(--text-lt); }
.text-success { color: var(--green); }
.text-danger { color: var(--red); }
.text-primary { color: var(--accent); }
.fw-bold { font-weight: 700; }
.mono { font-family: var(--mono); }
.d-flex { display: flex; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.mt-2 { margin-top: 8px; }
.mt-3 { margin-top: 16px; }
.mb-3 { margin-bottom: 16px; }
.p-0 { padding: 0; }
.w-100 { width: 100%; }
.hidden { display: none !important; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 768px) {
    .app-sidebar { transform: translateX(-100%); }
    .app-sidebar.mobile-open { transform: translateX(0); }
    .app-main { margin-left: 0; padding: 16px; }
    .form-grid, .form-grid-3, .form-grid-4 { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .form-col-full { grid-column: 1; }
}

/* ============================================================
   LOGIN PAGE
   ============================================================ */
.login-page {
    min-height: 100vh; background: var(--navy-dark);
    display: flex; align-items: center; justify-content: center;
    position: relative; overflow: hidden;
}
.login-page::before {
    content: ''; position: absolute; inset: 0;
    background: radial-gradient(ellipse at 30% 50%, rgba(21,101,192,.3) 0%, transparent 60%),
                radial-gradient(ellipse at 70% 50%, rgba(66,165,245,.15) 0%, transparent 60%);
}
.login-card {
    background: rgba(255,255,255,.04);
    border: 1px solid rgba(255,255,255,.1);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 44px 40px;
    width: 100%; max-width: 420px;
    position: relative; z-index: 1;
    box-shadow: 0 24px 80px rgba(0,0,0,.5);
}
.login-logo {
    text-align: center; margin-bottom: 32px;
}
.login-logo h1 { color: #fff; font-size: 28px; font-weight: 800; }
.login-logo h1 span { color: var(--accent-glow); }
.login-logo p { color: rgba(255,255,255,.5); font-size: 13px; margin-top: 4px; }
.login-card .form-label { color: rgba(255,255,255,.75); }
.login-card .form-control {
    background: rgba(255,255,255,.08);
    border-color: rgba(255,255,255,.15);
    color: #fff;
}
.login-card .form-control::placeholder { color: rgba(255,255,255,.3); }
.login-card .form-control:focus { border-color: var(--accent-glow); background: rgba(255,255,255,.12); }
.login-btn {
    width: 100%; background: var(--accent);
    color: #fff; border: none; padding: 12px;
    border-radius: var(--radius); font-size: 15px; font-weight: 700;
    cursor: pointer; transition: var(--trans); margin-top: 8px;
    font-family: var(--font);
}
.login-btn:hover { background: var(--accent-lt); transform: translateY(-1px); box-shadow: 0 6px 20px rgba(21,101,192,.4); }

/* Pagination */
.pagination {
    display: flex; align-items: center; gap: 4px; margin-top: 16px;
    justify-content: center;
}
.page-btn {
    min-width: 32px; height: 32px; border-radius: 7px;
    background: var(--card); border: 1.5px solid var(--border);
    color: var(--text-md); font-size: 13px;
    display: flex; align-items: center; justify-content: center;
    cursor: pointer; transition: var(--trans);
    text-decoration: none;
}
.page-btn:hover, .page-btn.active {
    background: var(--navy); border-color: var(--navy); color: #fff;
}

/* Sidebar collapse tooltip */
.app-sidebar.collapsed .sidebar-link { position: relative; }
.app-sidebar.collapsed .sidebar-link:hover::after {
    content: attr(data-tooltip);
    position: fixed;
    left: 62px;
    background: var(--navy-dark);
    color: #fff;
    padding: 5px 10px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 600;
    white-space: nowrap;
    z-index: 9999;
    box-shadow: var(--shadow-md);
    pointer-events: none;
}

/* Sidebar toggle button at bottom */
.sidebar-toggle-btn {
    position: sticky;
    bottom: 0;
    width: 100%;
    background: var(--navy-dark);
    border: none;
    color: rgba(255,255,255,.6);
    padding: 12px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 12px;
    font-weight: 600;
    font-family: var(--font);
    transition: var(--trans);
    border-top: 1px solid rgba(255,255,255,.06);
}
.sidebar-toggle-btn:hover { background: rgba(255,255,255,.08); color: #fff; }
.sidebar-toggle-btn .toggle-arrow { font-size: 14px; transition: transform .25s; }
.app-sidebar.collapsed .sidebar-toggle-btn .toggle-text { display: none; }
.app-sidebar.collapsed .sidebar-toggle-btn { justify-content: center; }