:root {
    --bg: #f4f6f8;
    --panel: #ffffff;
    --text: #17202a;
    --muted: #65717f;
    --line: #dce3ea;
    --accent: #0d6b78;
    --danger: #b42318;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: Arial, Helvetica, sans-serif;
}

a {
    color: inherit;
    text-decoration: none;
}

.topbar {
    align-items: center;
    background: #ffffff;
    border-bottom: 1px solid var(--line);
    display: flex;
    justify-content: space-between;
    padding: 14px 28px;
}

.topbar strong {
    display: block;
    font-size: 18px;
}

.topbar span,
.metrics span {
    color: var(--muted);
    font-size: 13px;
}

.topbar nav {
    display: flex;
    gap: 18px;
    font-size: 14px;
}

.app-shell {
    margin: 0 auto;
    max-width: 1180px;
    padding: 28px;
}

.login-shell {
    display: grid;
    min-height: 100vh;
    place-items: center;
}

.login-panel,
.panel {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 8px;
    box-shadow: 0 8px 24px rgba(23, 32, 42, 0.06);
}

.login-panel {
    display: grid;
    gap: 16px;
    padding: 28px;
    width: min(420px, calc(100vw - 32px));
}

.login-panel h1,
.panel h1,
.panel h2 {
    margin: 0;
}

.login-panel label {
    color: var(--muted);
    display: grid;
    gap: 6px;
    font-size: 14px;
}

input,
select,
button {
    border-radius: 6px;
    font: inherit;
    min-height: 42px;
}

input,
select {
    border: 1px solid var(--line);
    padding: 8px 10px;
}

button {
    background: var(--accent);
    border: 0;
    color: white;
    cursor: pointer;
    font-weight: 700;
    padding: 0 16px;
}

.metrics {
    display: grid;
    gap: 16px;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    margin-bottom: 20px;
}

.metrics article,
.panel {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 18px;
}

.metrics strong {
    display: block;
    font-size: 32px;
    margin-top: 8px;
}

.split {
    display: grid;
    gap: 20px;
    grid-template-columns: minmax(0, 1.4fr) minmax(320px, 0.6fr);
}

.upload-form {
    display: flex;
    gap: 12px;
    margin-top: 18px;
}

.upload-form input {
    flex: 1;
}

.filter-form {
    align-items: end;
    display: grid;
    gap: 12px;
    grid-template-columns: 1.4fr 1fr 1fr 160px auto auto;
    margin-top: 18px;
}

.filter-form label,
.form-grid label {
    color: var(--muted);
    display: grid;
    gap: 6px;
    font-size: 13px;
}

.command-form {
    display: grid;
    gap: 18px;
    margin-top: 18px;
}

.form-grid {
    display: grid;
    gap: 12px;
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.line-editor {
    border: 1px solid var(--line);
    border-radius: 8px;
    overflow: hidden;
}

.line-row {
    display: grid;
    gap: 8px;
    grid-template-columns: minmax(180px, 1fr) 140px 140px 90px;
    padding: 8px;
}

.line-row + .line-row {
    border-top: 1px solid var(--line);
}

.line-head {
    background: #f8fafc;
    color: var(--muted);
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
}

.section-gap {
    margin-top: 20px;
}

.inline-form {
    margin: 0;
}

.inline-form button {
    min-height: 34px;
    white-space: nowrap;
}

.picking-panel {
    display: grid;
    gap: 18px;
}

.picking-title {
    align-items: center;
    display: flex;
    gap: 12px;
    justify-content: space-between;
}

.picking-title h1 {
    margin-bottom: 4px;
}

.picking-title span,
.pick-line span {
    color: var(--muted);
    font-size: 13px;
}

.scan-form {
    display: grid;
    gap: 12px;
    grid-template-columns: minmax(0, 1fr) auto;
}

.scan-form label {
    color: var(--muted);
    display: grid;
    gap: 6px;
    font-size: 13px;
}

.scan-input {
    font-size: 22px;
    min-height: 56px;
}

.scan-input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 4px rgba(13, 107, 120, 0.18);
    outline: none;
}

.picking-lines {
    display: grid;
    gap: 10px;
}

.pick-line {
    align-items: center;
    border: 1px solid var(--line);
    border-radius: 8px;
    display: flex;
    gap: 12px;
    justify-content: space-between;
    padding: 14px;
}

.pick-line.complete {
    background: #e8f6f3;
    border-color: #96d7c8;
}

.pick-line strong {
    display: block;
}

.pick-progress {
    text-align: right;
}

.validate-picking button:disabled {
    background: #9aa7b4;
    cursor: not-allowed;
}

.secondary-button {
    align-items: center;
    border: 1px solid var(--line);
    border-radius: 6px;
    color: var(--muted);
    display: inline-flex;
    font-weight: 700;
    justify-content: center;
    min-height: 42px;
    padding: 0 14px;
}

.table-meta {
    color: var(--muted);
    font-size: 13px;
    margin-top: 16px;
}

.mobile-pick-list {
    display: none;
}

.pick-card {
    border: 1px solid var(--line);
    border-radius: 8px;
    display: grid;
    gap: 8px;
    padding: 12px;
}

.pick-card span {
    color: var(--muted);
    font-size: 13px;
}

table {
    border-collapse: collapse;
    margin-top: 16px;
    width: 100%;
}

th,
td {
    border-bottom: 1px solid var(--line);
    font-size: 14px;
    padding: 10px 8px;
    text-align: left;
}

th {
    color: var(--muted);
    font-size: 12px;
    text-transform: uppercase;
}

.alert,
.notice {
    border-radius: 6px;
    margin: 0 0 18px;
    padding: 12px 14px;
}

.alert {
    background: #fff0ed;
    color: var(--danger);
}

.notice {
    background: #e8f6f3;
    color: #126052;
}

.negative {
    color: var(--danger);
    font-weight: 700;
}

@media (max-width: 860px) {
    .topbar,
    .upload-form {
        align-items: flex-start;
        flex-direction: column;
    }

    .metrics,
    .split,
    .filter-form,
    .form-grid,
    .line-row,
    .scan-form {
        grid-template-columns: 1fr;
    }

    .picking-title,
    .pick-line {
        align-items: stretch;
        flex-direction: column;
    }

    .pick-progress {
        text-align: left;
    }

    .app-shell {
        padding: 18px;
    }
}

@media (max-width: 520px) {
    .topbar {
        gap: 10px;
        padding: 10px 12px;
    }

    .topbar nav {
        flex-wrap: wrap;
        gap: 8px 12px;
        line-height: 1.2;
    }

    .app-shell {
        padding: 10px;
    }

    .panel,
    .metrics article {
        border-radius: 6px;
        padding: 12px;
    }

    .desktop-only {
        display: none;
    }

    .mobile-pick-list {
        display: grid;
        gap: 10px;
        margin-top: 12px;
    }

    .picking-list-panel h1,
    .picking-panel h1 {
        font-size: 22px;
    }

    .picking-title {
        gap: 8px;
    }

    .scan-input {
        font-size: 26px;
        min-height: 64px;
    }

    .scan-form button,
    .pick-card button,
    .validate-picking button,
    .focus-scan-button {
        font-size: 18px;
        min-height: 52px;
        width: 100%;
    }

    .pick-line {
        padding: 12px;
    }

    .pick-line strong {
        font-size: 20px;
    }

    .pick-progress strong {
        font-size: 22px;
    }

    table {
        display: block;
        overflow-x: auto;
        white-space: nowrap;
    }
}