:root {
    --bg: #f4f7f5;
    --panel: rgba(255, 255, 255, .80);
    --panel-solid: #ffffff;
    --text: #10231a;
    --muted: #6d7b73;
    --line: rgba(16, 70, 43, .10);
    --green: #087a4f;
    --green2: #0fb979;
    --green3: #55d7a2;
    --gold: #e7b84b;
    --danger: #dc5b68;
    --shadow: 0 24px 70px rgba(10, 68, 43, .12);
    --shadow-strong: 0 30px 90px rgba(7, 68, 43, .18);
    --radius: 26px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    min-height: 100vh;
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    color: var(--text);
    background: var(--bg);
}
html[data-theme="dark"] body, body.dark {
    --bg: #07110d;
    --panel: rgba(12, 28, 21, .80);
    --panel-solid: #0d1c16;
    --text: #edf8f2;
    --muted: #91a69b;
    --line: rgba(157, 255, 210, .10);
    --shadow: 0 24px 70px rgba(0, 0, 0, .35);
    --shadow-strong: 0 32px 90px rgba(0, 0, 0, .46);
}
body.menu-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
button, input, select { font: inherit; }

.ambient {
    position: fixed;
    inset: 0;
    z-index: -2;
    pointer-events: none;
    background:
        radial-gradient(circle at 15% 10%, rgba(15, 185, 121, .13), transparent 32%),
        radial-gradient(circle at 90% 5%, rgba(231, 184, 75, .12), transparent 26%),
        radial-gradient(circle at 65% 85%, rgba(15, 185, 121, .09), transparent 28%);
}

/* Authentication and lock screens */
.auth-body {
    overflow: hidden;
    color: #eef8f3;
    background: #06110c;
}
.grid-orbit {
    position: fixed;
    inset: -20%;
    background-image:
        linear-gradient(rgba(85, 255, 170, .06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(85, 255, 170, .06) 1px, transparent 1px);
    background-size: 52px 52px;
    transform: perspective(700px) rotateX(62deg) translateY(20%);
    animation: gridMove 18s linear infinite;
    mask-image: linear-gradient(to bottom, transparent, #000 30%, #000 70%, transparent);
}
@keyframes gridMove { to { background-position: 0 104px; } }
.auth-shell { min-height: 100vh; display: grid; place-items: center; padding: 24px; }
.auth-card {
    width: min(470px, 100%);
    padding: 38px;
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(133, 255, 194, .14);
    border-radius: 32px;
    background: linear-gradient(145deg, rgba(15, 42, 30, .88), rgba(6, 22, 15, .72));
    backdrop-filter: blur(20px);
    box-shadow: 0 40px 100px rgba(0, 0, 0, .42);
}
.auth-card::before {
    content: "";
    position: absolute;
    width: 260px;
    height: 260px;
    right: -100px;
    top: -120px;
    border-radius: 50%;
    background: rgba(15, 185, 121, .18);
    filter: blur(55px);
}
.auth-logo {
    width: 190px;
    height: 72px;
    position: relative;
    object-fit: contain;
    object-position: left center;
    filter: brightness(1.55) saturate(.9);
}
.auth-card h1 { position: relative; margin: 18px 0 10px; font-size: 36px; line-height: 1.05; }
.auth-card p { position: relative; color: #a9bdb1; line-height: 1.6; }
.stack { position: relative; display: grid; gap: 16px; margin-top: 24px; }
.status-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 9px 12px;
    border-radius: 99px;
    color: #bde8cf;
    background: rgba(15, 185, 121, .10);
    font-size: 12px;
    font-weight: 800;
}
.status-pill span {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #45e39d;
    box-shadow: 0 0 14px #45e39d;
    animation: pulse 1.8s infinite;
}
@keyframes pulse { 50% { opacity: .45; transform: scale(.75); } }
.lock-card { text-align: center; }
.lock-icon {
    width: 76px;
    height: 76px;
    display: grid;
    place-items: center;
    margin: 0 auto 20px;
    border: 1px solid rgba(255, 255, 255, .12);
    border-radius: 24px;
    background: linear-gradient(135deg, rgba(15, 185, 121, .24), rgba(231, 184, 75, .18));
    font-size: 42px;
}
.form-divider { height: 1px; background: rgba(255, 255, 255, .10); }

/* Forms and buttons */
label { display: grid; gap: 8px; color: var(--muted); font-size: 13px; font-weight: 700; }
input, select {
    width: 100%;
    padding: 14px 15px;
    color: var(--text);
    background: var(--panel-solid);
    border: 1px solid var(--line);
    border-radius: 15px;
    outline: none;
    transition: border-color .25s, box-shadow .25s, transform .25s;
}
input:focus, select:focus {
    border-color: rgba(15, 185, 121, .55);
    box-shadow: 0 0 0 4px rgba(15, 185, 121, .10);
}
.auth-card input { color: #fff; background: rgba(255, 255, 255, .07); border-color: rgba(255, 255, 255, .12); }
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 18px;
    border: 0;
    border-radius: 15px;
    font-weight: 800;
    cursor: pointer;
    transition: transform .25s, box-shadow .25s, filter .25s;
}
.btn:hover { transform: translateY(-2px); filter: brightness(1.03); }
.btn.primary {
    color: #fff;
    background: linear-gradient(135deg, var(--green2), var(--green));
    box-shadow: 0 14px 30px rgba(15, 185, 121, .25);
}
.btn.secondary { color: var(--text); background: var(--panel-solid); border: 1px solid var(--line); }

/* App shell */
.app-body { display: grid; grid-template-columns: 270px minmax(0, 1fr); }
.sidebar {
    position: fixed;
    inset: 0 auto 0 0;
    z-index: 50;
    width: 270px;
    display: flex;
    flex-direction: column;
    padding: 24px 18px;
    color: #e9f5ee;
    background:
        linear-gradient(180deg, rgba(7, 24, 17, .98), rgba(5, 18, 13, .98)),
        radial-gradient(circle at top, rgba(15, 185, 121, .14), transparent 40%);
    border-right: 1px solid rgba(255, 255, 255, .06);
    box-shadow: 16px 0 60px rgba(0, 0, 0, .08);
}
.brand { display: flex; align-items: center; gap: 10px; padding: 0 8px 20px; }
.brand img { width: 128px; height: 48px; object-fit: contain; object-position: left center; filter: brightness(1.8); }
.brand span { padding-left: 10px; color: #87a896; border-left: 1px solid rgba(255, 255, 255, .12); font-size: 12px; }
.sidebar nav { display: grid; gap: 5px; overflow: auto; scrollbar-width: thin; }
.nav-item {
    display: flex;
    align-items: center;
    gap: 13px;
    padding: 12px 14px;
    color: #9fb4a8;
    border-radius: 14px;
    font-size: 14px;
    font-weight: 700;
    transition: transform .25s, background .25s, color .25s;
}
.nav-item b { width: 22px; text-align: center; color: #71a98b; }
.nav-item:hover, .nav-item.active {
    color: #fff;
    background: linear-gradient(135deg, rgba(15, 185, 121, .18), rgba(15, 185, 121, .06));
    transform: translateX(3px);
}
.nav-item.active b { color: #62e3a6; }
.nav-label { padding: 17px 14px 5px; color: #577365; font-size: 10px; text-transform: uppercase; letter-spacing: .15em; }
.lock-link {
    margin-top: auto;
    padding: 13px 14px;
    color: #cfe3d8;
    border: 1px solid rgba(255, 255, 255, .08);
    border-radius: 14px;
    font-weight: 800;
    transition: .25s;
}
.lock-link:hover { background: rgba(255, 255, 255, .05); transform: translateY(-2px); }
.sidebar-overlay { display: none; }
.main { grid-column: 2; min-width: 0; padding: 0 32px 50px; }

/* Sticky top bar */
.topbar {
    position: sticky;
    top: 0;
    z-index: 35;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    min-height: 94px;
    margin: 0 -10px 25px;
    padding: 18px 10px 14px;
    background: var(--bg);
    backdrop-filter: blur(18px);
    transition: box-shadow .25s, border-color .25s, background .25s;
}
.topbar.scrolled {
    border-bottom: 1px solid var(--line);
    box-shadow: 0 16px 30px rgba(9, 55, 37, .08);
}
.page-heading { min-width: 0; flex: 1; }
.topbar h1 { margin: 3px 0 0; font-size: 30px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.eyebrow { color: var(--green2); font-size: 10px; font-weight: 900; text-transform: uppercase; letter-spacing: .16em; }
.top-actions { display: flex; align-items: center; gap: 12px; }
.icon-btn, .menu-btn, .copy-btn {
    color: var(--text);
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 13px;
    cursor: pointer;
}
.icon-btn { width: 44px; height: 44px; font-size: 19px; transition: .25s; }
.icon-btn:hover { transform: rotate(12deg) translateY(-2px); }
.menu-btn {
    display: none;
    width: 44px;
    height: 44px;
    flex: 0 0 44px;
    position: relative;
    padding: 0;
    transition: left .3s, background .25s, transform .25s;
}
.menu-btn span {
    position: absolute;
    left: 11px;
    width: 20px;
    height: 2px;
    border-radius: 5px;
    background: currentColor;
    transition: transform .28s, opacity .2s, top .28s;
}
.menu-btn span:nth-child(1) { top: 14px; }
.menu-btn span:nth-child(2) { top: 21px; }
.menu-btn span:nth-child(3) { top: 28px; }
.menu-btn.is-open span:nth-child(1) { top: 21px; transform: rotate(45deg); }
.menu-btn.is-open span:nth-child(2) { opacity: 0; }
.menu-btn.is-open span:nth-child(3) { top: 21px; transform: rotate(-45deg); }
.admin-chip {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 7px 12px 7px 7px;
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 15px;
}
.admin-chip > span, .avatar {
    width: 38px;
    height: 38px;
    display: grid;
    place-items: center;
    color: #fff;
    background: linear-gradient(135deg, var(--green2), var(--green));
    border-radius: 12px;
    font-weight: 900;
}
.admin-chip div { display: grid; min-width: 0; }
.admin-chip strong { max-width: 210px; overflow: hidden; text-overflow: ellipsis; font-size: 12px; }
.admin-chip small { color: var(--muted); font-size: 10px; }

/* Shared cards */
.hero-panel, .panel, .metric-card, .insight-card {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    backdrop-filter: blur(18px);
    box-shadow: var(--shadow);
}
.hero-panel {
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 24px;
    padding: 29px 30px;
    background: linear-gradient(135deg, rgba(15, 185, 121, .14), var(--panel) 45%, rgba(231, 184, 75, .10));
}
.hero-panel::after {
    content: "";
    position: absolute;
    width: 220px;
    height: 220px;
    right: 12%;
    top: -110px;
    border: 1px solid rgba(15, 185, 121, .16);
    border-radius: 50%;
    box-shadow: 0 0 0 35px rgba(15, 185, 121, .03), 0 0 0 70px rgba(15, 185, 121, .02);
}
.hero-panel h2 { margin: 7px 0; font-size: 32px; }
.hero-panel p { max-width: 650px; margin: 0; color: var(--muted); }
.hero-panel form { position: relative; z-index: 1; }
.metric-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin: 20px 0; }
.metric-card { position: relative; overflow: hidden; padding: 23px; transition: transform .3s, box-shadow .3s; }
.metric-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-strong); }
.metric-card::after { content: ""; position: absolute; width: 110px; height: 110px; right: -35px; top: -40px; border-radius: 50%; filter: blur(4px); opacity: .22; }
.metric-card.revenue::after { background: var(--green2); }
.metric-card.expense::after { background: var(--danger); }
.metric-card.profit::after { background: var(--gold); }
.metric-card span { color: var(--muted); font-size: 13px; }
.metric-card strong { display: block; margin: 8px 0; font-size: 28px; }
.metric-card small { color: var(--muted); }
.metric-icon { width: 42px; height: 42px; display: grid; place-items: center; margin-bottom: 20px; background: rgba(15, 185, 121, .12); border-radius: 14px; }
.chart-grid { display: grid; grid-template-columns: minmax(0, 1.7fr) minmax(320px, .8fr); gap: 18px; }
.panel { margin-bottom: 18px; padding: 23px; }
.panel-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 18px; }
.panel-head h3 { margin: 4px 0 0; font-size: 20px; }
.chart-box, .chart-box.donut { height: 330px; }
.growth-pills { display: flex; gap: 7px; }
.growth-pills span { padding: 7px 10px; border-radius: 99px; font-size: 11px; }
.growth-pills .up { color: #0e9d67; background: rgba(15, 185, 121, .10); }
.growth-pills .down { color: #ce4a58; background: rgba(220, 91, 104, .10); }
.period-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.period-stats div { padding: 18px; background: linear-gradient(135deg, rgba(15, 185, 121, .08), rgba(255, 255, 255, .02)); border: 1px solid var(--line); border-radius: 18px; }
.period-stats span { display: block; color: var(--muted); font-size: 12px; }
.period-stats strong { display: block; margin-top: 8px; font-size: 21px; }
.form-grid { display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(280px, .75fr); gap: 18px; }
.form-layout { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.form-layout .full { grid-column: 1 / -1; }
.form-layout .btn { width: max-content; }
.insight-card {
    position: relative;
    overflow: hidden;
    min-height: 280px;
    padding: 27px;
    color: #fff;
    background: linear-gradient(155deg, #0b6d49, #072e20);
}
.insight-card::after { content: ""; position: absolute; width: 240px; height: 240px; right: -90px; bottom: -130px; border: 1px solid rgba(255, 255, 255, .12); border-radius: 50%; box-shadow: 0 0 0 34px rgba(255, 255, 255, .035), 0 0 0 68px rgba(255, 255, 255, .02); }
.insight-card span { color: #aee6c9; font-size: 11px; text-transform: uppercase; letter-spacing: .15em; }
.insight-card h3 { font-size: 27px; line-height: 1.1; }
.insight-card p { color: #c5ddd1; line-height: 1.6; }
.inline-form { display: flex; gap: 10px; }
.chip-cloud { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 18px; }
.category-chip { display: inline-flex; align-items: center; gap: 8px; padding: 10px 12px; background: var(--panel-solid); border: 1px solid var(--line); border-radius: 13px; font-size: 13px; font-weight: 800; }
.category-chip small { color: var(--muted); font-size: 9px; text-transform: uppercase; }
.category-chip.revenue { box-shadow: inset 3px 0 var(--green2); }
.category-chip.expense { box-shadow: inset 3px 0 var(--danger); }

/* Alerts and tables */
.alert { margin-bottom: 16px; padding: 14px 16px; border-radius: 15px; font-size: 13px; font-weight: 750; animation: alertIn .35s both; }
.alert.success { color: #0a774b; background: rgba(15, 185, 121, .12); border: 1px solid rgba(15, 185, 121, .18); }
.alert.error { color: #b33745; background: rgba(220, 91, 104, .12); border: 1px solid rgba(220, 91, 104, .18); }
@keyframes alertIn { from { opacity: 0; transform: translateY(-8px); } }
.table-wrap { overflow: auto; }
table { width: 100%; min-width: 720px; border-collapse: collapse; }
th, td { padding: 14px 12px; text-align: left; border-bottom: 1px solid var(--line); font-size: 13px; }
th { color: var(--muted); font-size: 10px; text-transform: uppercase; letter-spacing: .12em; }
tbody tr { transition: background .2s; }
tbody tr:hover { background: rgba(15, 185, 121, .04); }
.badge { display: inline-flex; padding: 6px 9px; border-radius: 99px; font-size: 10px; font-weight: 900; text-transform: uppercase; }
.badge.revenue, .badge.paid, .badge.active { color: #0d9c65; background: rgba(15, 185, 121, .11); }
.badge.expense, .badge.pending { color: #a47a13; background: rgba(231, 184, 75, .13); }
.badge.inactive { color: #c94c59; background: rgba(220, 91, 104, .11); }
.amount.revenue { color: #0d9c65; font-weight: 900; }
.amount.expense { color: #c94c59; font-weight: 900; }
.search { max-width: 240px; }

/* Staff cards */
.staff-card-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.staff-card {
    position: relative;
    overflow: hidden;
    padding: 22px;
    color: #fff;
    background: linear-gradient(145deg, #087a4f, #063d29 68%, #062a1e);
    border: 1px solid rgba(255, 255, 255, .10);
    border-radius: 24px;
    box-shadow: 0 24px 55px rgba(5, 72, 46, .25);
    transition: transform .35s, box-shadow .35s;
    transform-style: preserve-3d;
}
.staff-card:nth-child(3n + 2) { background: linear-gradient(145deg, #174c3b, #0b2b22 72%, #071d17); }
.staff-card:nth-child(3n + 3) { background: linear-gradient(145deg, #82691f, #463815 70%, #251e0d); }
.staff-card:hover { transform: translateY(-7px) rotateX(1deg); box-shadow: 0 32px 70px rgba(5, 72, 46, .34); }
.card-glow { position: absolute; width: 180px; height: 180px; right: -80px; top: -90px; border-radius: 50%; background: rgba(255, 255, 255, .11); filter: blur(32px); }
.staff-card-head { position: relative; display: flex; align-items: center; gap: 10px; }
.staff-card-head > div:nth-child(2) { display: grid; flex: 1; min-width: 0; }
.staff-card-head strong { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 14px; }
.staff-card-head span:not(.badge) { color: #bdd6ca; font-size: 11px; }
.staff-card .avatar { background: rgba(255, 255, 255, .15); border: 1px solid rgba(255, 255, 255, .12); }
.staff-card .badge { color: #d6f8e7; background: rgba(255, 255, 255, .12); }
.staff-salary { margin: 24px 0 18px; padding: 17px; background: rgba(255, 255, 255, .10); border: 1px solid rgba(255, 255, 255, .10); border-radius: 18px; }
.staff-salary span, .staff-payment-grid span { display: block; color: #b8d2c5; font-size: 10px; text-transform: uppercase; letter-spacing: .12em; }
.staff-salary strong { display: block; margin-top: 6px; font-size: 25px; }
.staff-payment-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 13px; }
.staff-payment-grid .full { grid-column: 1 / -1; }
.staff-payment-grid strong { display: block; margin-top: 5px; font-size: 13px; }
.staff-payment-grid .full > div { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.staff-card-foot { margin-top: 19px; padding-top: 15px; color: #c7ded2; border-top: 1px solid rgba(255, 255, 255, .10); font-size: 11px; }
.copy-btn { width: 34px; height: 34px; color: #fff; background: rgba(255, 255, 255, .10); border-color: rgba(255, 255, 255, .12); transition: transform .2s, background .2s; }
.copy-btn:hover, .copy-btn.copied { background: rgba(255, 255, 255, .20); transform: translateY(-2px); }

/* Payroll */
.payroll-preview {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    min-height: 76px;
    padding: 14px;
    color: var(--muted);
    background: linear-gradient(135deg, rgba(15, 185, 121, .08), rgba(231, 184, 75, .07));
    border: 1px dashed rgba(15, 185, 121, .28);
    border-radius: 17px;
}
.payroll-preview > span { align-self: center; }
.payroll-preview div { padding: 10px 12px; background: var(--panel-solid); border: 1px solid var(--line); border-radius: 13px; }
.payroll-preview div span { display: block; margin-bottom: 5px; color: var(--muted); font-size: 10px; text-transform: uppercase; letter-spacing: .10em; }
.payroll-preview div strong { font-size: 13px; }
.payroll-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.payroll-card {
    position: relative;
    overflow: hidden;
    padding: 22px;
    color: #fff;
    background: linear-gradient(145deg, rgba(8, 122, 79, .98), rgba(5, 50, 34, .98));
    border: 1px solid rgba(255, 255, 255, .08);
    border-radius: 24px;
    box-shadow: 0 24px 55px rgba(5, 72, 46, .25);
    transition: transform .35s, box-shadow .35s;
    transform-style: preserve-3d;
}
.payroll-card:nth-child(3n + 2) { background: linear-gradient(145deg, #114a37, #0a2b21); }
.payroll-card:nth-child(3n + 3) { background: linear-gradient(145deg, #80651f, #3c3214); }
.payroll-card:hover { transform: translateY(-7px) rotateX(1deg); box-shadow: 0 32px 70px rgba(5, 72, 46, .34); }
.payroll-top { position: relative; display: flex; align-items: center; gap: 10px; }
.payroll-top > div:nth-child(2) { display: grid; flex: 1; min-width: 0; }
.payroll-top strong { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 14px; }
.payroll-top span:not(.badge) { color: #bdd6ca; font-size: 11px; }
.payroll-card .avatar { background: rgba(255, 255, 255, .15); border: 1px solid rgba(255, 255, 255, .12); }
.payroll-card .badge { color: #e8fff3; background: rgba(255, 255, 255, .12); }
.pay-amount { margin: 25px 0 18px; padding: 17px; background: rgba(255, 255, 255, .10); border: 1px solid rgba(255, 255, 255, .10); border-radius: 18px; }
.pay-amount > span, .bank-grid span { display: block; color: #b8d2c5; font-size: 10px; text-transform: uppercase; letter-spacing: .12em; }
.pay-amount strong { display: block; margin-top: 5px; font-size: 25px; }
.bank-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 13px; }
.bank-grid .full { grid-column: 1 / -1; }
.bank-grid strong { display: block; margin-top: 5px; font-size: 13px; overflow-wrap: anywhere; }
.payroll-foot { display: flex; justify-content: space-between; gap: 12px; margin-top: 19px; padding-top: 15px; color: #c7ded2; border-top: 1px solid rgba(255, 255, 255, .10); font-size: 11px; }

/* Motion */
.reveal { animation: rise .55s both; }
.metric-card:nth-child(2), .staff-card:nth-child(2), .payroll-card:nth-child(2) { animation-delay: .05s; }
.metric-card:nth-child(3), .staff-card:nth-child(3), .payroll-card:nth-child(3) { animation-delay: .10s; }
@keyframes rise { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}

@media (max-width: 1100px) {
    .payroll-grid, .staff-card-grid { grid-template-columns: repeat(2, 1fr); }
    .chart-grid, .form-grid { grid-template-columns: 1fr; }
    .metric-grid { grid-template-columns: 1fr 1fr; }
    .metric-card:last-child { grid-column: 1 / -1; }
}

@media (max-width: 820px) {
    .app-body { display: block; }
    .sidebar {
        width: min(86vw, 300px);
        transform: translateX(-105%);
        transition: transform .3s cubic-bezier(.22, .75, .23, 1);
    }
    .sidebar.open { transform: translateX(0); }
    .sidebar-overlay {
        position: fixed;
        inset: 0;
        z-index: 42;
        display: block;
        visibility: hidden;
        opacity: 0;
        background: rgba(2, 12, 8, .55);
        backdrop-filter: blur(5px);
        transition: opacity .25s, visibility .25s;
    }
    .sidebar-overlay.visible { visibility: visible; opacity: 1; }
    .main { padding: 0 20px 40px; }
    .menu-btn { display: block; z-index: 70; }
    .menu-btn.is-open {
        position: fixed;
        top: 20px;
        left: calc(min(86vw, 300px) - 62px);
        color: #fff;
        background: rgba(255, 255, 255, .10);
        border-color: rgba(255, 255, 255, .12);
    }
    .topbar { min-height: 84px; margin-bottom: 20px; align-items: center; }
    .admin-chip div { display: none; }
    .hero-panel { align-items: flex-start; flex-direction: column; gap: 18px; }
    .metric-grid { grid-template-columns: 1fr; }
    .metric-card:last-child { grid-column: auto; }
    .period-stats, .payroll-preview { grid-template-columns: 1fr; }
    .payroll-grid, .staff-card-grid { grid-template-columns: 1fr; }
    .form-layout { grid-template-columns: 1fr; }
    .form-layout .full { grid-column: auto; }
    .panel-head { align-items: flex-start; flex-direction: column; }
    .search { max-width: none; }
    .growth-pills { flex-wrap: wrap; }
    .hero-panel h2 { font-size: 26px; }
}

@media (max-width: 520px) {
    .main { padding-inline: 14px; }
    .topbar { margin-inline: -2px; padding-inline: 2px; }
    .topbar h1 { font-size: 22px; }
    .topbar .eyebrow { display: none; }
    .top-actions { gap: 8px; }
    .icon-btn, .menu-btn { width: 42px; height: 42px; }
    .admin-chip { padding: 5px; }
    .admin-chip > span { width: 34px; height: 34px; }
    .panel, .hero-panel { padding: 19px; border-radius: 21px; }
    .inline-form { flex-direction: column; }
    .inline-form .btn { width: 100%; }
    .bank-grid, .staff-payment-grid { grid-template-columns: 1fr; }
    .bank-grid .full, .staff-payment-grid .full { grid-column: auto; }
}

.form-actions { grid-column: 1 / -1; display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.staff-card-foot { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.staff-card-foot a { color: #ffffff; font-weight: 800; opacity: .88; }
.staff-card-foot a:hover { opacity: 1; text-decoration: underline; }


/* v4 interaction and record management */
.topbar { z-index: 900; isolation: isolate; }
.sidebar { z-index: 1001; }
.sidebar-overlay { z-index: 1000; }
.menu-btn { z-index: 1002; pointer-events: auto !important; touch-action: manipulation; }
.sidebar-close {
    display: none;
    width: 38px;
    height: 38px;
    margin-left: auto;
    color: #fff;
    background: rgba(255,255,255,.08);
    border: 1px solid rgba(255,255,255,.10);
    border-radius: 12px;
    cursor: pointer;
    font-size: 24px;
    line-height: 1;
}
.card-glow, .staff-card::before, .staff-card::after, .payroll-card::before, .payroll-card::after { pointer-events: none; }
.head-tools { display: flex; align-items: center; justify-content: flex-end; gap: 10px; flex-wrap: wrap; }
.btn.compact { padding: 11px 14px; border-radius: 13px; font-size: 12px; white-space: nowrap; }
.row-actions, .card-actions, .proof-actions { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.row-actions form, .card-actions form, .proof-actions form { margin: 0; }
.action-btn, .card-action {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 34px;
    padding: 8px 11px;
    color: var(--text);
    background: var(--panel-solid);
    border: 1px solid var(--line);
    border-radius: 11px;
    cursor: pointer;
    font-size: 11px;
    font-weight: 850;
    transition: transform .2s, border-color .2s, background .2s;
}
.action-btn:hover, .card-action:hover { transform: translateY(-1px); border-color: rgba(15,185,121,.38); }
.action-btn.danger, .card-action.danger { color: #c84251; background: rgba(220,91,104,.08); border-color: rgba(220,91,104,.18); }
.action-btn:disabled, .card-action:disabled { opacity: .45; cursor: not-allowed; transform: none; }
.managed-label, .usage-count { color: var(--muted); font-size: 10px; font-weight: 750; white-space: nowrap; }
.management-list { display: grid; gap: 10px; }
.management-list.compact-list { margin-top: 18px; }
.management-row {
    display: flex;
    align-items: center;
    gap: 9px;
    padding: 11px;
    background: linear-gradient(135deg, rgba(15,185,121,.055), rgba(231,184,75,.035));
    border: 1px solid var(--line);
    border-radius: 16px;
}
.management-form { display: grid; grid-template-columns: 120px minmax(150px,1fr) auto auto; align-items: center; gap: 9px; flex: 1; }
.management-form.role-form { grid-template-columns: minmax(160px,1fr) auto auto; }
.management-form.admin-form { grid-template-columns: minmax(190px,1fr) minmax(180px,1fr) auto auto; }
.management-form input, .management-form select { padding: 10px 11px; border-radius: 11px; font-size: 12px; }
.empty-state { display: grid; place-items: center; gap: 7px; min-height: 190px; padding: 28px; text-align: center; border: 1px dashed var(--line); border-radius: 20px; }
.empty-state strong { font-size: 17px; }
.empty-state span { color: var(--muted); font-size: 12px; }
.card-actions { position: relative; margin-top: 14px; padding-top: 13px; border-top: 1px solid rgba(255,255,255,.10); }
.card-action { color: #fff; background: rgba(255,255,255,.09); border-color: rgba(255,255,255,.12); }
.card-action.danger { color: #ffd9dd; background: rgba(220,91,104,.16); border-color: rgba(255,190,198,.16); }
.payroll-card-wrap { min-width: 0; }
.proof-actions { justify-content: flex-end; padding: 11px 4px 0; }
.proof-actions .action-btn { background: var(--panel); }

@media (max-width: 820px) {
    .sidebar { z-index: 1001; }
    .sidebar-overlay { z-index: 1000; }
    .menu-btn { z-index: 1002; }
    .sidebar-close { display: grid; place-items: center; }
    .menu-btn.is-open { opacity: 0; pointer-events: none !important; }
    .head-tools { width: 100%; justify-content: stretch; }
    .head-tools .search { flex: 1; }
    .management-row { align-items: stretch; flex-direction: column; }
    .management-form, .management-form.role-form, .management-form.admin-form { grid-template-columns: 1fr; width: 100%; }
    .management-row > form:last-child .action-btn { width: 100%; }
}

@media (max-width: 520px) {
    .head-tools { flex-direction: column; align-items: stretch; }
    .head-tools .btn { width: 100%; }
    .row-actions { min-width: 150px; }
    .proof-actions { justify-content: stretch; }
    .proof-actions > * { flex: 1; }
    .proof-actions .action-btn { width: 100%; }
}


/* v5 modular shell and mobile interaction hardening */
html[data-theme="dark"] { color-scheme: dark; }
html[data-theme="light"] { color-scheme: light; }
body, button, a, input, select { -webkit-tap-highlight-color: transparent; }
.main { position: relative; isolation: isolate; }
.main > section, .main > .alert { position: relative; z-index: 1; }
.topbar {
    z-index: 7000 !important;
    pointer-events: auto !important;
    isolation: isolate;
}
.topbar *, .top-actions, .page-heading { pointer-events: auto !important; }
.menu-btn, .icon-btn { position: relative; pointer-events: auto !important; touch-action: manipulation; user-select: none; -webkit-user-select: none; }
.sidebar-overlay { z-index: 8000 !important; }
.sidebar { z-index: 8001 !important; }
.sidebar-close { z-index: 2; pointer-events: auto !important; touch-action: manipulation; }
.reveal, .panel, .staff-board, .form-grid { isolation: isolate; }
.hero-panel::after, .metric-card::after, .insight-card::after, .card-glow { pointer-events: none !important; }
.theme-toggle { display: inline-grid; place-items: center; overflow: hidden; }
.theme-toggle span { grid-area: 1 / 1; transition: transform .25s, opacity .2s; }
html[data-theme="light"] .theme-moon { opacity: 0; transform: translateY(12px) rotate(-20deg); }
html[data-theme="light"] .theme-sun { opacity: 1; transform: none; }
html[data-theme="dark"] .theme-sun { opacity: 0; transform: translateY(-12px) rotate(20deg); }
html[data-theme="dark"] .theme-moon { opacity: 1; transform: none; }

@media (max-width: 820px) {
    .topbar { position: sticky; top: 0; z-index: 7000 !important; }
    .menu-btn { display: block !important; z-index: 7001 !important; }
    .menu-btn.is-open { opacity: 1 !important; pointer-events: auto !important; position: relative !important; top: auto !important; left: auto !important; }
    .sidebar.open { transform: translate3d(0, 0, 0); }
    .sidebar-overlay.visible { pointer-events: auto; }
    .sidebar-overlay:not(.visible) { pointer-events: none; }
}