/* ==============================================================
   INVENTORY CONTROL - Stylesheet
   Aesthetic: Refined industrial. Slate sidebar, warm off-white content,
   amber accents, Plus Jakarta Sans + JetBrains Mono.
   ============================================================== */

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

:root {
    --bg-page:        #f6f4ef;
    --bg-card:        #ffffff;
    --bg-sidebar:     #0b1220;
    --bg-sidebar-hover: #131c30;
    --bg-sidebar-active: #1a2440;
    --bg-topbar:      #ffffff;

    --text-primary:   #0f172a;
    --text-secondary: #475569;
    --text-muted:     #94a3b8;
    --text-on-dark:   #e2e8f0;
    --text-on-dark-muted: #94a3b8;

    --accent:         #d97706;   /* amber 600 */
    --accent-dark:    #b45309;
    --accent-light:   #fef3c7;

    --success:        #16a34a;
    --warning:        #ea580c;
    --danger:         #dc2626;
    --info:           #0284c7;

    --border:         #e6e2d8;
    --border-strong:  #d4cfc1;

    --shadow-sm:      0 1px 2px rgba(15,23,42,0.04);
    --shadow:         0 4px 10px rgba(15,23,42,0.06), 0 1px 2px rgba(15,23,42,0.04);
    --shadow-lg:      0 20px 40px rgba(15,23,42,0.12), 0 8px 16px rgba(15,23,42,0.06);

    --radius-sm:      6px;
    --radius:         10px;
    --radius-lg:      14px;

    --sidebar-w:      256px;
    --topbar-h:       64px;
    --footer-h:       48px;

    --font-sans: 'Plus Jakarta Sans', system-ui, sans-serif;
    --font-mono: 'JetBrains Mono', ui-monospace, monospace;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; height: 100%; }

body {
    font-family: var(--font-sans);
    font-size: 14px;
    color: var(--text-primary);
    background: var(--bg-page);
    -webkit-font-smoothing: antialiased;
}

/* ====== LOGIN ====== */
.login-shell {
    min-height: 100vh;
    display: flex;
    align-items: stretch;
    background:
        radial-gradient(1200px 600px at -10% -10%, rgba(217,119,6,0.10), transparent 60%),
        radial-gradient(900px 700px at 110% 110%, rgba(11,18,32,0.10), transparent 60%),
        linear-gradient(180deg, #fbfaf6, #efebe1);
}
.login-left {
    flex: 1.1;
    background: linear-gradient(135deg, #0b1220 0%, #1a2440 100%);
    color: #fff;
    padding: 64px 56px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    position: relative;
    overflow: hidden;
}
.login-left::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        radial-gradient(700px 300px at 90% 0%, rgba(217,119,6,0.35), transparent 60%),
        radial-gradient(500px 400px at 10% 100%, rgba(217,119,6,0.18), transparent 60%);
    pointer-events: none;
}
.login-brand {
    font-family: var(--font-sans);
    font-weight: 800;
    font-size: 22px;
    letter-spacing: -0.02em;
    display: flex;
    align-items: center;
    gap: 12px;
    z-index: 1;
}
.login-brand-mark {
    width: 40px; height: 40px;
    background: var(--accent);
    border-radius: 10px;
    display: grid; place-items: center;
    color: #fff;
    font-family: var(--font-mono);
    font-weight: 700;
    box-shadow: 0 6px 20px rgba(217,119,6,0.5);
}
.login-hero { z-index: 1; }
.login-hero h1 {
    font-size: 44px;
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.1;
    margin: 0 0 16px 0;
}
.login-hero h1 span { color: var(--accent); }
.login-hero p {
    color: #cbd5e1;
    font-size: 16px;
    line-height: 1.6;
    max-width: 440px;
}
.login-meta { z-index: 1; color: #94a3b8; font-family: var(--font-mono); font-size: 12px; }

.login-right {
    flex: 0.9;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 48px;
}
.login-card {
    width: 100%;
    max-width: 420px;
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 48px 40px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border);
}
.login-card h2 {
    margin: 0 0 8px 0;
    font-size: 28px;
    letter-spacing: -0.02em;
}
.login-card .muted { color: var(--text-secondary); margin: 0 0 28px 0; }

.field { margin-bottom: 18px; }
.field label {
    display: block;
    font-weight: 600;
    font-size: 13px;
    margin-bottom: 8px;
    color: var(--text-secondary);
    letter-spacing: 0.01em;
}
.field .form-input,
.form-input,
input.form-input,
select.form-input,
textarea.form-input {
    width: 100%;
    padding: 11px 14px;
    border: 1px solid var(--border-strong);
    border-radius: var(--radius);
    font-family: var(--font-sans);
    font-size: 14px;
    background: #fff;
    color: var(--text-primary);
    outline: none;
    transition: border-color 0.15s, box-shadow 0.15s;
}
.form-input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(217,119,6,0.15);
}
textarea.form-input { resize: vertical; min-height: 80px; }

.btn {
    display: inline-flex; align-items: center; justify-content: center;
    gap: 8px;
    padding: 11px 20px;
    border: 1px solid transparent;
    border-radius: var(--radius);
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    transition: transform 0.08s, box-shadow 0.15s, background 0.15s;
    text-decoration: none;
    line-height: 1;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--accent); color: #fff; box-shadow: 0 6px 16px rgba(217,119,6,0.3); }
.btn-primary:hover { background: var(--accent-dark); }
.btn-secondary { background: #fff; color: var(--text-primary); border-color: var(--border-strong); }
.btn-secondary:hover { background: #f8f7f3; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: #b91c1c; }
.btn-ghost { background: transparent; color: var(--text-secondary); }
.btn-ghost:hover { background: #f3efe5; color: var(--text-primary); }
.btn-block { width: 100%; }
.btn-sm { padding: 7px 12px; font-size: 13px; }

.alert {
    padding: 12px 14px;
    border-radius: var(--radius);
    font-size: 13px;
    margin-bottom: 16px;
}
.alert-error   { background: #fef2f2; color: #991b1b; border: 1px solid #fecaca; }
.alert-success { background: #f0fdf4; color: #166534; border: 1px solid #bbf7d0; }
.alert-info    { background: #f0f9ff; color: #075985; border: 1px solid #bae6fd; }
.alert-warn    { background: #fffbeb; color: #92400e; border: 1px solid #fde68a; }

/* ====== APP SHELL ====== */
.app { min-height: 100vh; display: flex; flex-direction: column; }

.sidebar {
    position: fixed;
    top: 0; left: 0; bottom: 0;
    width: var(--sidebar-w);
    background: var(--bg-sidebar);
    color: var(--text-on-dark);
    z-index: 30;
    overflow-y: auto;
    border-right: 1px solid #0a0f1a;
    transition: transform 0.25s ease;
}
.sidebar-brand {
    height: var(--topbar-h);
    padding: 0 20px;
    display: flex; align-items: center; gap: 12px;
    border-bottom: 1px solid #1a2440;
    position: sticky; top: 0;
    background: var(--bg-sidebar);
    z-index: 1;
}
.sidebar-brand-mark {
    width: 36px; height: 36px;
    background: var(--accent);
    border-radius: 9px;
    display: grid; place-items: center;
    font-family: var(--font-mono);
    font-weight: 700;
    color: #fff;
    box-shadow: 0 4px 12px rgba(217,119,6,0.35);
}
.sidebar-brand-text { font-weight: 700; font-size: 16px; letter-spacing: -0.01em; }

.sidebar-section { padding: 16px 12px 8px 12px; }
.sidebar-section-title {
    text-transform: uppercase;
    font-size: 11px;
    font-weight: 600;
    color: #64748b;
    padding: 8px 12px;
    letter-spacing: 0.08em;
}
.sidebar-nav { list-style: none; padding: 0; margin: 0; }
.sidebar-nav a {
    display: flex; align-items: center; gap: 12px;
    padding: 10px 12px;
    margin: 2px 0;
    border-radius: 8px;
    color: var(--text-on-dark-muted);
    text-decoration: none;
    font-weight: 500;
    font-size: 14px;
    transition: background 0.12s, color 0.12s;
}
.sidebar-nav a:hover { background: var(--bg-sidebar-hover); color: #fff; }
.sidebar-nav a.active {
    background: var(--bg-sidebar-active);
    color: #fff;
    box-shadow: inset 3px 0 0 var(--accent);
}
.sidebar-nav a .icon {
    width: 18px; height: 18px;
    display: inline-block;
    color: currentColor;
}

.topbar {
    position: fixed;
    top: 0; right: 0;
    left: var(--sidebar-w);
    height: var(--topbar-h);
    background: var(--bg-topbar);
    border-bottom: 1px solid var(--border);
    z-index: 20;
    display: flex; align-items: center;
    padding: 0 28px;
    gap: 16px;
}
.topbar .hamburger { display: none; }
.topbar-title {
    font-weight: 700;
    font-size: 17px;
    letter-spacing: -0.01em;
    color: var(--text-primary);
    flex: 1;
}
.topbar-meta {
    display: flex; align-items: center; gap: 14px;
    color: var(--text-secondary);
    font-size: 13px;
}
.topbar-user {
    display: flex; align-items: center; gap: 10px;
    padding: 6px 10px;
    border-radius: 999px;
    background: #f8f7f3;
    border: 1px solid var(--border);
}
.topbar-avatar {
    width: 30px; height: 30px;
    border-radius: 50%;
    background: var(--accent);
    color: #fff;
    display: grid; place-items: center;
    font-weight: 700; font-size: 13px;
    text-transform: uppercase;
}
.topbar-username { font-weight: 600; color: var(--text-primary); }
.topbar a.logout {
    color: var(--text-secondary);
    text-decoration: none;
    padding: 7px 12px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 13px;
}
.topbar a.logout:hover { background: #fef2f2; color: var(--danger); }

.main {
    margin-left: var(--sidebar-w);
    margin-top: var(--topbar-h);
    padding: 28px;
    flex: 1;
    min-width: 0;
    padding-bottom: calc(var(--footer-h) + 28px);
}

.footer {
    position: fixed;
    left: var(--sidebar-w);
    right: 0; bottom: 0;
    height: var(--footer-h);
    background: #fff;
    border-top: 1px solid var(--border);
    display: flex; align-items: center;
    padding: 0 28px;
    z-index: 10;
    color: var(--text-muted);
    font-size: 12px;
    justify-content: space-between;
}
.footer .footer-mono { font-family: var(--font-mono); }

/* ====== PAGE HEADER ====== */
.page-head {
    display: flex; align-items: flex-end; justify-content: space-between;
    margin-bottom: 24px;
    gap: 16px;
    flex-wrap: wrap;
}
.page-head h1 {
    margin: 0;
    font-size: 26px;
    font-weight: 700;
    letter-spacing: -0.02em;
}
.page-head p { margin: 4px 0 0 0; color: var(--text-secondary); }
.page-actions { display: flex; gap: 8px; flex-wrap: wrap; }

/* ====== CARDS ====== */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 22px;
    box-shadow: var(--shadow-sm);
    margin-bottom: 22px;
}
.card-title {
    font-weight: 700;
    font-size: 15px;
    letter-spacing: -0.01em;
    margin: 0 0 14px 0;
    color: var(--text-primary);
    display: flex; align-items: center; justify-content: space-between;
}
.card-title .badge { font-weight: 500; }

/* ====== KPI GRID ====== */
.kpi-grid {
    display: grid;
    gap: 16px;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    margin-bottom: 24px;
}
.kpi {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 20px;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}
.kpi::after {
    content: "";
    position: absolute;
    width: 80px; height: 80px;
    right: -20px; top: -20px;
    background: var(--accent-light);
    border-radius: 50%;
    opacity: 0.6;
}
.kpi-label {
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 11px;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 8px;
}
.kpi-value {
    font-family: var(--font-mono);
    font-size: 28px;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text-primary);
    line-height: 1.1;
}
.kpi-sub { font-size: 12px; color: var(--text-secondary); margin-top: 4px; }
.kpi.accent { background: linear-gradient(135deg, #0b1220 0%, #1a2440 100%); color: #fff; border-color: transparent; }
.kpi.accent .kpi-label { color: #fcd34d; }
.kpi.accent .kpi-value { color: #fff; }
.kpi.accent .kpi-sub { color: #cbd5e1; }
.kpi.accent::after { background: rgba(217,119,6,0.4); }
.kpi.warn .kpi-value { color: var(--warning); }

/* ====== TABLES ====== */
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
table.data {
    width: 100%;
    border-collapse: collapse;
    font-size: 13.5px;
}
table.data th, table.data td {
    padding: 12px 14px;
    text-align: left;
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
}
table.data thead th {
    background: #faf8f2;
    text-transform: uppercase;
    font-size: 11px;
    letter-spacing: 0.06em;
    color: var(--text-secondary);
    font-weight: 700;
    border-bottom: 1px solid var(--border-strong);
    position: sticky; top: 0;
}
table.data tbody tr:hover { background: #fbfaf4; }
table.data td.num, table.data th.num { text-align: right; font-family: var(--font-mono); }
table.data td.center, table.data th.center { text-align: center; }

.badge {
    display: inline-block;
    padding: 3px 9px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}
.badge-success { background: #dcfce7; color: #166534; }
.badge-danger  { background: #fee2e2; color: #991b1b; }
.badge-warn    { background: #fef3c7; color: #854d0e; }
.badge-info    { background: #e0f2fe; color: #075985; }
.badge-muted   { background: #f1f5f9; color: #475569; }
.badge-dark    { background: #0f172a; color: #fcd34d; }

.empty {
    text-align: center;
    padding: 48px 20px;
    color: var(--text-muted);
}
.empty .empty-mark {
    width: 64px; height: 64px;
    margin: 0 auto 14px;
    background: #f3efe5;
    border-radius: 16px;
    display: grid; place-items: center;
    font-family: var(--font-mono);
    font-weight: 700;
    color: var(--accent);
    font-size: 22px;
}

/* ====== FORMS GRID ====== */
.grid-2 { display: grid; gap: 16px; grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { display: grid; gap: 16px; grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { display: grid; gap: 16px; grid-template-columns: repeat(4, minmax(0, 1fr)); }
.row-actions { display: flex; gap: 8px; justify-content: flex-end; align-items: center; flex-wrap: wrap; margin-top: 16px; }

/* radio cards (for stock type) */
.radio-row { display: flex; gap: 12px; flex-wrap: wrap; }
.radio-card {
    flex: 1; min-width: 200px;
    padding: 14px 16px;
    border: 2px solid var(--border-strong);
    border-radius: var(--radius);
    cursor: pointer;
    transition: all 0.15s;
    background: #fff;
}
.radio-card:hover { border-color: var(--accent); }
.radio-card.selected { border-color: var(--accent); background: var(--accent-light); }
.radio-card .rc-title { font-weight: 700; font-size: 14px; }
.radio-card .rc-sub  { font-size: 12px; color: var(--text-secondary); margin-top: 4px; }
.radio-card input { display: none; }

/* misc utility */
.mono { font-family: var(--font-mono); }
.tx-success { color: var(--success); }
.tx-danger  { color: var(--danger); }
.tx-muted   { color: var(--text-muted); }
.text-right { text-align: right; }
.mt-0 { margin-top: 0 !important; }
.mb-0 { margin-bottom: 0 !important; }
.mt-2 { margin-top: 16px; }
.flex { display: flex; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.flex-1 { flex: 1; }
.muted { color: var(--text-secondary); }
.hidden { display: none !important; }

/* validation summary */
.validation-summary {
    color: var(--danger);
    background: #fef2f2;
    border: 1px solid #fecaca;
    border-radius: var(--radius);
    padding: 10px 14px;
    margin-bottom: 14px;
    font-size: 13px;
}
.validation-summary ul { margin: 4px 0 0 20px; padding: 0; }

/* ASP.NET GridView styling */
.gv {
    width: 100%;
    border-collapse: collapse;
    font-size: 13.5px;
}
.gv th, .gv td {
    padding: 11px 14px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}
.gv th {
    background: #faf8f2;
    text-transform: uppercase;
    font-size: 11px;
    letter-spacing: 0.06em;
    color: var(--text-secondary);
    font-weight: 700;
}
.gv tr:hover { background: #fbfaf4; }
.gv a { color: var(--accent); text-decoration: none; font-weight: 600; }
.gv a:hover { text-decoration: underline; }

/* hamburger only used on mobile */
.hamburger {
    width: 36px; height: 36px;
    border-radius: 8px;
    background: #f3efe5;
    border: 1px solid var(--border);
    display: grid; place-items: center;
    cursor: pointer;
}
.hamburger span {
    width: 18px; height: 2px; background: var(--text-primary);
    display: block; position: relative;
}
.hamburger span::before, .hamburger span::after {
    content: ""; position: absolute; left: 0; width: 18px; height: 2px; background: var(--text-primary);
}
.hamburger span::before { top: -6px; }
.hamburger span::after  { top:  6px; }

.backdrop {
    position: fixed; inset: 0;
    background: rgba(15,23,42,0.4);
    z-index: 25;
    display: none;
}
.backdrop.show { display: block; }

/* ====== RESPONSIVE ====== */
@media (max-width: 1100px) {
    .kpi-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .grid-4  { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 820px) {
    .login-shell { flex-direction: column; }
    .login-left { padding: 40px 28px; }
    .login-left .login-hero h1 { font-size: 32px; }
    .login-right { padding: 28px; }
    .login-card { padding: 32px 24px; }

    .sidebar { transform: translateX(-100%); box-shadow: var(--shadow-lg); }
    .sidebar.open { transform: translateX(0); }
    .topbar { left: 0; padding: 0 16px; }
    .topbar .hamburger { display: grid; }
    .main { margin-left: 0; padding: 18px; padding-bottom: calc(var(--footer-h) + 18px); }
    .footer { left: 0; padding: 0 16px; font-size: 11px; }

    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .kpi-grid { grid-template-columns: 1fr; }
    .kpi-value { font-size: 24px; }
    .page-head h1 { font-size: 22px; }
    .topbar-meta { gap: 8px; }
    .topbar-meta .hide-mobile { display: none; }
    .card { padding: 16px; }
}

@media (max-width: 480px) {
    .topbar-username { display: none; }
    .topbar-title { font-size: 15px; }
}

/* ====== PRINT (reports) ====== */
@media print {
    .sidebar, .topbar, .footer, .page-actions, .no-print { display: none !important; }
    .main { margin: 0; padding: 0; }
    .card { box-shadow: none; border: 1px solid #ddd; }
    body { background: #fff; }
}

/* ====== USER MENU DROPDOWN ====== */
.user-menu { position: relative; }
.user-menu .topbar-user {
    border: 1px solid var(--border);
    background: #f8f7f3;
    cursor: pointer;
    font-family: inherit;
    color: var(--text-primary);
    padding: 6px 10px 6px 10px;
    border-radius: 999px;
}
.user-menu .topbar-user:hover { background: #f3efe5; }
.user-menu .caret { color: var(--text-muted); margin-left: 4px; font-size: 11px; }
.user-menu-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    min-width: 200px;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    padding: 6px;
    z-index: 50;
    display: none;
}
.user-menu.open .user-menu-dropdown { display: block; }
.user-menu-item {
    display: block;
    padding: 9px 12px;
    border-radius: 8px;
    color: var(--text-primary);
    text-decoration: none;
    font-size: 13.5px;
    font-weight: 500;
}
.user-menu-item:hover { background: #f3efe5; }
.user-menu-item.logout-item { color: var(--danger); }
.user-menu-item.logout-item:hover { background: #fef2f2; }
.user-menu-divider { height: 1px; background: var(--border); margin: 4px 2px; }

/* ====== CLICKABLE KPI ====== */
.kpi-link {
    text-decoration: none;
    color: inherit;
    display: block;
    transition: transform 0.12s ease, box-shadow 0.12s ease;
}
.kpi-link:hover .kpi {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
    border-color: var(--accent);
}
.kpi-link:hover .kpi.accent { border-color: transparent; box-shadow: 0 12px 30px rgba(11,18,32,0.3); }