:root {
    --bg: #f5f7fb;
    --panel: #ffffff;
    --text: #1f2937;
    --muted: #6b7280;
    --line: #dde3ee;
    --brand: #155eef;
    --accent: #0f9d58;
    --danger: #b42318;
    --warning: #b54708;
    --shadow: 0 10px 25px rgba(21, 37, 89, 0.08);
    --radius: 18px;
}

* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
}
a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3 { margin-top: 0; }
p { line-height: 1.5; }
.muted { color: var(--muted); }

.app-shell {
    display: grid;
    grid-template-columns: 260px 1fr;
    min-height: 100vh;
}

.sidebar {
    background: #0f172a;
    color: #fff;
    padding: 20px;
    position: sticky;
    top: 0;
    height: 100vh;
}
.brand {
    display: flex;
    gap: 12px;
    align-items: center;
    margin-bottom: 24px;
}
.brand-mark {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    display: grid;
    place-items: center;
    background: rgba(255,255,255,0.12);
    font-size: 22px;
}
.nav-group-title {
    margin: 18px 0 8px;
    padding: 0 14px;
    color: rgba(219, 228, 255, 0.65);
    font-size: 12px;
    font-weight: 800;
    letter-spacing: .08em;
    text-transform: uppercase;
}

.nav a {
    display: block;
    padding: 12px 14px;
    color: #dbe4ff;
    border-radius: 12px;
    margin-bottom: 6px;
}
.nav a:hover {
    background: rgba(255,255,255,0.08);
    text-decoration: none;
}
.main {
    padding: 24px;
}
.topbar {
    margin-bottom: 18px;
}
.flash {
    padding: 14px 16px;
    border-radius: 14px;
    margin-bottom: 18px;
    border: 1px solid var(--line);
    background: var(--panel);
}
.flash-success { border-color: #b7ebc6; background: #ecfdf3; }
.flash-error { border-color: #f6c5c1; background: #fff1f0; }
.flash-warning { border-color: #f7d9b2; background: #fff7ed; }

.card-grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 18px;
}
.card, .panel {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}
.card {
    padding: 18px;
}
.span-3 { grid-column: span 3; }
.span-4 { grid-column: span 4; }
.span-5 { grid-column: span 5; }
.span-6 { grid-column: span 6; }
.span-7 { grid-column: span 7; }
.span-8 { grid-column: span 8; }
.span-12 { grid-column: span 12; }

.kpi {
    font-size: 30px;
    font-weight: 800;
    margin-top: 8px;
}

.toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    margin-bottom: 14px;
    flex-wrap: wrap;
}

.btn, button.btn {
    display: inline-flex;
    gap: 8px;
    align-items: center;
    border: 1px solid transparent;
    background: var(--brand);
    color: #fff;
    padding: 10px 14px;
    border-radius: 12px;
    font-weight: 700;
    cursor: pointer;
    text-decoration: none;
}
.btn.secondary {
    background: #fff;
    color: var(--text);
    border-color: var(--line);
}
.btn.success { background: var(--accent); }
.btn.warning { background: var(--warning); }
.btn.danger { background: var(--danger); }
.btn.small { padding: 8px 12px; font-size: 14px; }

table {
    width: 100%;
    border-collapse: collapse;
}
table th, table td {
    padding: 12px;
    border-bottom: 1px solid var(--line);
    text-align: left;
    vertical-align: top;
}
table th {
    color: var(--muted);
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: .05em;
}

.panel {
    overflow: hidden;
}
.panel-header {
    padding: 16px 18px;
    border-bottom: 1px solid var(--line);
    background: linear-gradient(180deg, #fff, #fafcff);
}
.panel-body { padding: 18px; }

form .grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 14px;
}
.field {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.checkbox-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
    padding: 12px;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: #f8fafc;
}
.checkbox-grid label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
}
.checkbox-grid input[type="checkbox"] {
    width: auto;
    margin: 0;
}
.field.span-12 { grid-column: span 12; }
.field.span-6 { grid-column: span 6; }
.field.span-4 { grid-column: span 4; }
.field.span-3 { grid-column: span 3; }

label {
    font-weight: 700;
    font-size: 14px;
}
input, select, textarea {
    width: 100%;
    padding: 11px 12px;
    border-radius: 12px;
    border: 1px solid var(--line);
    background: #fff;
    font: inherit;
}
textarea { min-height: 100px; resize: vertical; }

.meta-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0,1fr));
    gap: 12px;
}
.meta-item {
    background: #f8fafc;
    border: 1px solid var(--line);
    border-radius: 14px;
    padding: 12px;
}
.badge {
    display: inline-block;
    padding: 6px 10px;
    background: #eef4ff;
    color: #1b4ed8;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 700;
}
.stack {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}
.empty {
    padding: 18px;
    border-radius: 14px;
    border: 1px dashed var(--line);
    color: var(--muted);
    background: #fcfdff;
}
.note {
    padding: 12px 14px;
    background: #f9fafb;
    border: 1px solid var(--line);
    border-radius: 14px;
}
.doc-list {
    display: grid;
    gap: 12px;
}
.doc-item {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    align-items: center;
    padding: 14px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: #fff;
}
.inline-actions { display: flex; gap: 10px; flex-wrap: wrap; }

.choice-list {
    display: grid;
    gap: 10px;
}
.choice-option {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 14px;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: #f8fafc;
    font-weight: 600;
}
.choice-option input[type="radio"] {
    width: auto;
    margin: 0;
}
.pdf-preview-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}
.pdf-preview-card {
    border: 1px solid var(--line);
    border-radius: 16px;
    overflow: hidden;
    background: #fff;
}
.doc-item-preview {
    border: 0;
    border-bottom: 1px solid var(--line);
    border-radius: 0;
}
.pdf-inline-viewer {
    display: block;
    width: 100%;
    height: 520px;
    border: 0;
    background: #eef2f7;
}

@media (max-width: 980px) {
    .app-shell {
        grid-template-columns: 1fr;
    }
    .sidebar {
        position: static;
        height: auto;
    }
    .card-grid {
        grid-template-columns: 1fr;
    }
    .span-3, .span-4, .span-5, .span-6, .span-7, .span-8, .span-12 {
        grid-column: span 1;
    }
    form .grid {
        grid-template-columns: 1fr;
    }
    .field.span-12, .field.span-6, .field.span-4, .field.span-3 {
        grid-column: span 1;
    }
    .checkbox-grid {
        grid-template-columns: 1fr;
    }
    .meta-list {
        grid-template-columns: 1fr;
    }
    .pdf-preview-grid {
        grid-template-columns: 1fr;
    }
    .pdf-inline-viewer {
        height: 420px;
    }
}

.topbar-flex { display:flex; justify-content:space-between; align-items:flex-start; gap:16px; flex-wrap:wrap; }
.userbox { background:#fff; border:1px solid var(--line); border-radius:14px; padding:14px 16px; box-shadow: var(--shadow); min-width:220px; }
.stack { display:flex; gap:10px; flex-wrap:wrap; }
.stack.right { justify-content:flex-end; }
.badge { display:inline-block; padding:4px 10px; border-radius:999px; background:#eef2ff; color:#334155; font-size:12px; font-weight:700; }
.note { background:#f8fafc; border:1px solid var(--line); border-radius:14px; padding:14px; }
.empty { padding:16px; border:1px dashed var(--line); border-radius:14px; color:var(--muted); }
.meta-list { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:12px; }
.meta-item { padding:12px; background:#f8fafc; border:1px solid var(--line); border-radius:14px; }
.login-shell { min-height:100vh; display:grid; place-items:center; padding:24px; }
.login-card { width:min(100%, 480px); background:#fff; border:1px solid var(--line); border-radius:20px; box-shadow:var(--shadow); padding:24px; }

.remember-choice {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
}
.remember-choice input[type="checkbox"] {
    width: auto;
    margin: 0;
}
.pdf-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 16px;
}
.pdf-tab {
    display: inline-flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    padding: 12px 14px;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: #f8fafc;
    color: var(--text);
    font: inherit;
    font-weight: 700;
    cursor: pointer;
}
.pdf-tab.is-active {
    background: #eef4ff;
    border-color: #bfd2ff;
}
.pdf-tab-subtitle {
    font-size: 12px;
    font-weight: 600;
    color: var(--muted);
}
.pdf-tab-panel {
    display: none;
}
.pdf-tab-panel.is-active {
    display: block;
}

.stack-lg {
    display: flex;
    flex-direction: column;
    gap: 18px;
}
.compact-grid {
    align-items: end;
}
.shipment-form-layout {
    max-width: 1400px;
}
.inline-note {
    min-height: 46px;
    display: flex;
    align-items: center;
    padding: 12px 14px;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: #f8fafc;
    color: var(--text);
    font-weight: 600;
}
.existing-documents {
    margin-top: 20px;
    padding-top: 18px;
    border-top: 1px solid var(--line);
}
.existing-documents h3 {
    margin: 0 0 12px;
    font-size: 16px;
}
.doc-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 12px;
}
.doc-chip-card {
    border: 1px solid var(--line);
    border-radius: 14px;
    background: #f8fafc;
    padding: 14px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}


.form-section-title {
    margin: 8px 0 14px;
    padding: 10px 14px;
    border-left: 4px solid var(--brand);
    background: #f8fbff;
    border-radius: 12px;
    font-weight: 800;
}

input[readonly] {
    background: #f8fafc;
}

.grid-2 { display:grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap:16px; }
@media (max-width: 900px) { .grid-2 { grid-template-columns: 1fr; } }