/* NanoSafer modern design system */
:root {
    --ns-bg: #f5f6f8;
    --ns-surface: #ffffff;
    --ns-surface-2: #f0f2f5;
    --ns-text: #161a20;
    --ns-muted: #5b6573;
    --ns-border: rgba(20, 24, 31, 0.10);
    --ns-border-strong: rgba(20, 24, 31, 0.18);
    --ns-brand: #0f9d77;
    --ns-brand-ink: #0b6d54;
    --ns-brand-tint: #e3f5ee;
    --ns-info: #2f6fdd;
    --ns-success: #1a8a4f;
    --ns-success-tint: #e5f4ea;
    --ns-warning: #b97608;
    --ns-warning-tint: #fbeed4;
    --ns-danger: #d23f3f;
    --ns-danger-tint: #fae9e9;
    --ns-placeholder: #8a93a0;
    --ns-radius: 10px;
    --ns-radius-sm: 8px;
    --ns-shadow: 0 1px 2px rgba(20, 24, 31, 0.04);
    --ns-font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}
@media (prefers-color-scheme: dark) {
    :root {
        --ns-bg: #0e1116;
        --ns-surface: #161b22;
        --ns-surface-2: #1c222b;
        --ns-text: #e7eaef;
        --ns-muted: #97a1b0;
        --ns-border: rgba(255, 255, 255, 0.10);
        --ns-border-strong: rgba(255, 255, 255, 0.18);
        --ns-brand: #2bbd92;
        --ns-brand-ink: #7fe0c4;
        --ns-brand-tint: rgba(43, 189, 146, 0.12);
        --ns-info: #5b9bff;
        --ns-success: #3cc474;
        --ns-success-tint: rgba(60, 196, 116, 0.12);
        --ns-warning: #e0a64a;
        --ns-warning-tint: rgba(224, 166, 74, 0.14);
        --ns-danger: #ed6a6a;
        --ns-danger-tint: rgba(237, 106, 106, 0.14);
        --ns-placeholder: #aab3bf;
        --ns-shadow: none;
    }
}

.form-control::placeholder, .ns-input::placeholder, input::placeholder, textarea::placeholder { color: var(--ns-placeholder); opacity: 1; }

body {
    background: var(--ns-bg);
    color: var(--ns-text);
    font-family: var(--ns-font);
    font-size: 15px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4 { font-weight: 600; letter-spacing: -0.01em; color: var(--ns-text); }
a { color: var(--ns-brand-ink); text-decoration: none; }
a:hover { text-decoration: underline; }

/* App shell */
.ns-header {
    background: var(--ns-surface);
    border-bottom: 1px solid var(--ns-border);
    position: sticky; top: 0; z-index: 100;
}
.ns-header-inner {
    max-width: 1080px; margin: 0 auto; padding: 0 24px;
    height: 60px; display: flex; align-items: center; gap: 28px;
}
.ns-brand { display: flex; align-items: center; gap: 10px; font-weight: 600; font-size: 17px; color: var(--ns-text); }
.ns-brand:hover { text-decoration: none; }
.ns-logo {
    width: 30px; height: 30px; border-radius: 8px; background: var(--ns-brand);
    color: #fff; display: flex; align-items: center; justify-content: center; font-size: 16px;
}
.ns-badge-ver { font-size: 12px; color: var(--ns-muted); border: 1px solid var(--ns-border); border-radius: 6px; padding: 1px 7px; font-weight: 400; }
.ns-nav { display: flex; align-items: center; gap: 4px; flex: 1; list-style: none; margin: 0; padding: 0; }
.ns-nav a {
    color: var(--ns-muted); padding: 7px 12px; border-radius: var(--ns-radius-sm);
    font-size: 14px; font-weight: 500; display: inline-flex; align-items: center; gap: 7px;
    white-space: nowrap;
}
.ns-nav a:hover { background: var(--ns-surface-2); color: var(--ns-text); text-decoration: none; }
.ns-nav a.active { background: var(--ns-brand-tint); color: var(--ns-brand-ink); }
.ns-user { display: flex; align-items: center; flex-wrap: nowrap; gap: 10px; font-size: 14px; color: var(--ns-muted); }
.ns-user-email { max-width: 200px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; flex-shrink: 1; min-width: 0; }
.ns-user-toggle { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ns-muted); cursor: pointer; }
.ns-user-toggle:hover { color: var(--ns-text); }
.ns-user-toggle::after { margin-left: 2px; vertical-align: middle; color: var(--ns-muted); }
.ns-avatar {
    width: 30px; height: 30px; border-radius: 50%; background: var(--ns-brand-tint);
    color: var(--ns-brand-ink); display: flex; align-items: center; justify-content: center;
    font-size: 12px; font-weight: 600; flex-shrink: 0;
}
.ns-main { max-width: 1080px; margin: 0 auto; padding: 32px 24px 64px; }

/* Header nav — responsive collapse + overflow dropdown */
.ns-nav-toggle {
    display: none; align-items: center; justify-content: center;
    width: 36px; height: 36px; padding: 0; margin-left: auto;
    border: 1px solid var(--ns-border); border-radius: var(--ns-radius-sm);
    background: var(--ns-surface); color: var(--ns-text); font-size: 18px; line-height: 1;
}
.ns-nav-toggle:hover { background: var(--ns-surface-2); }
.ns-nav-toggle:focus { outline: none; box-shadow: 0 0 0 3px var(--ns-brand-tint); }

.ns-more-menu {
    padding: 6px; border: 1px solid var(--ns-border); border-radius: var(--ns-radius);
    box-shadow: 0 8px 24px rgba(20, 24, 31, 0.12); background: var(--ns-surface); min-width: 190px;
}
.ns-more-menu .dropdown-item {
    display: flex; align-items: center; gap: 8px; padding: 8px 10px; border-radius: var(--ns-radius-sm);
    font-size: 14px; font-weight: 500; color: var(--ns-muted);
}
.ns-more-menu .dropdown-item:hover { background: var(--ns-surface-2); color: var(--ns-text); }
.ns-more-menu .dropdown-item.active { background: var(--ns-brand-tint); color: var(--ns-brand-ink); }

@media (min-width: 992px) {
    .ns-nav-collapse { display: flex !important; flex: 1; align-items: center; justify-content: space-between; }
}

@media (max-width: 991.98px) {
    .ns-header-inner { flex-wrap: nowrap; gap: 12px; }
    .ns-nav-toggle { display: inline-flex; }
    .ns-nav-collapse {
        position: absolute; top: 60px; left: 0; right: 0;
        flex-direction: column; align-items: stretch;
        background: var(--ns-surface); border-bottom: 1px solid var(--ns-border);
        box-shadow: 0 8px 24px rgba(20, 24, 31, 0.12);
        padding: 8px 20px 16px; max-height: calc(100vh - 60px); overflow-y: auto;
    }
    .ns-nav-collapse.show, .ns-nav-collapse.collapsing { display: flex; }
    .ns-nav { flex-direction: column; align-items: stretch; width: 100%; gap: 2px; }
    .ns-nav a { width: 100%; padding: 10px 12px; white-space: normal; }
    .ns-nav-account { margin-top: 8px; padding-top: 10px; border-top: 1px solid var(--ns-border); }
    .ns-user {
        flex-direction: column; align-items: stretch; width: 100%;
        border-top: 1px solid var(--ns-border); margin-top: 8px; padding-top: 12px; gap: 8px;
    }
    .ns-user .ns-btn { justify-content: center; }
}

/* Cards & components */
.ns-card {
    background: var(--ns-surface); border: 1px solid var(--ns-border);
    border-radius: var(--ns-radius); padding: 22px 24px; box-shadow: var(--ns-shadow);
}
.ns-page-title { font-size: 24px; margin: 0 0 4px; }
.ns-subtitle { color: var(--ns-muted); font-size: 14px; margin: 0 0 24px; }

.ns-btn {
    display: inline-flex; align-items: center; gap: 7px; cursor: pointer;
    font-family: var(--ns-font); font-size: 14px; font-weight: 500;
    padding: 9px 16px; border-radius: var(--ns-radius-sm);
    border: 1px solid var(--ns-border-strong); background: var(--ns-surface); color: var(--ns-text);
    transition: background .12s, border-color .12s;
}
.ns-btn:hover { background: var(--ns-surface-2); text-decoration: none; }
.ns-btn-primary { background: var(--ns-brand); border-color: var(--ns-brand); color: #fff; }
.ns-btn-primary:hover { background: var(--ns-brand-ink); border-color: var(--ns-brand-ink); }

.ns-icon-btn {
    display: inline-flex; align-items: center; justify-content: center;
    width: 32px; height: 32px; border-radius: var(--ns-radius-sm);
    border: 1px solid var(--ns-border); background: var(--ns-surface); color: var(--ns-muted);
    cursor: pointer; font-size: 16px; margin-left: 4px; vertical-align: middle;
}
.ns-icon-btn:hover { background: var(--ns-surface-2); color: var(--ns-text); text-decoration: none; }
.ns-icon-danger:hover { background: var(--ns-danger-tint); color: var(--ns-danger); border-color: var(--ns-danger); }

.ns-entry { display: block; text-align: left; transition: border-color .12s, transform .12s; }
a.ns-entry:hover { text-decoration: none; border-color: var(--ns-brand); transform: translateY(-2px); }
.ns-entry-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 14px; }
.ns-entry-icon {
    width: 38px; height: 38px; border-radius: var(--ns-radius-sm); display: flex; align-items: center; justify-content: center;
    background: var(--ns-brand-tint); color: var(--ns-brand-ink); font-size: 20px;
}
.ns-entry-go { color: var(--ns-muted); font-size: 18px; }
a.ns-entry:hover .ns-entry-go { color: var(--ns-brand); }
.ns-entry-count { font-size: 32px; font-weight: 600; letter-spacing: -0.02em; line-height: 1; color: var(--ns-text); }
.ns-entry-label { font-size: 14px; color: var(--ns-text); margin-top: 2px; }
.ns-entry-sub { font-size: 12.5px; color: var(--ns-muted); margin-top: 8px; line-height: 1.45; }
.ns-entry-disabled { opacity: 0.7; }

.ns-metrics { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 14px; }
.ns-metric { background: var(--ns-surface); border: 1px solid var(--ns-border); border-radius: var(--ns-radius); padding: 16px 18px; }
.ns-metric-label { font-size: 15px; font-weight: 500; margin-bottom: 6px; }
.ns-metric-value { font-size: 26px; font-weight: 600; letter-spacing: -0.02em; }

.ns-badge { display: inline-flex; align-items: center; gap: 6px; font-size: 12.5px; font-weight: 600; padding: 3px 10px; border-radius: 999px; }
.ns-badge-success { background: var(--ns-success-tint); color: var(--ns-success); }
.ns-badge-warning { background: var(--ns-warning-tint); color: var(--ns-warning); }
.ns-badge-danger { background: var(--ns-danger-tint); color: var(--ns-danger); }

/* "Coming soon" button — a visible entry point for a feature not yet ported from the legacy app. */
.ns-btn-soon { color: var(--ns-muted); border-style: dashed; }
.ns-btn-soon:hover { background: var(--ns-surface-2); color: var(--ns-text); }
.ns-soon-tag {
    font-size: 10.5px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em;
    color: var(--ns-warning); background: var(--ns-warning-tint); padding: 1px 6px; border-radius: 999px;
}

/* Lightweight, theme-aware modal (not-implemented notice, small confirmations…). */
.ns-modal-overlay {
    position: fixed; inset: 0; z-index: 1000; display: none;
    align-items: center; justify-content: center; padding: 20px;
    background: rgba(10, 13, 18, 0.5);
}
.ns-modal-overlay.is-open { display: flex; }
.ns-modal {
    background: var(--ns-surface); border: 1px solid var(--ns-border);
    border-radius: var(--ns-radius); box-shadow: 0 12px 40px rgba(10, 13, 18, 0.28);
    max-width: 420px; width: 100%; padding: 24px; text-align: center;
}
.ns-modal-icon {
    width: 48px; height: 48px; border-radius: 12px; margin: 0 auto 14px;
    display: flex; align-items: center; justify-content: center; font-size: 24px;
    background: var(--ns-warning-tint); color: var(--ns-warning);
}
.ns-modal h2 { font-size: 18px; margin: 0 0 8px; }
.ns-modal p { color: var(--ns-muted); font-size: 14px; line-height: 1.5; margin: 0 0 20px; }

/* Callout notices (public landing page: important-changes / development notes). */
.ns-notice {
    display: flex; gap: 10px; align-items: flex-start;
    padding: 12px 14px; border-radius: var(--ns-radius-sm);
    font-size: 13.5px; line-height: 1.55; color: var(--ns-text);
}
.ns-notice > i { font-size: 18px; margin-top: 1px; flex-shrink: 0; }
.ns-notice-warning { background: var(--ns-warning-tint); }
.ns-notice-warning > i { color: var(--ns-warning); }
.ns-notice-brand { background: var(--ns-brand-tint); }
.ns-notice-brand > i { color: var(--ns-brand-ink); }

/* Tables */
.ns-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.ns-table thead th {
    text-align: left; font-weight: 500; font-size: 12px; text-transform: uppercase;
    letter-spacing: 0.04em; color: var(--ns-muted); padding: 10px 14px; border-bottom: 1px solid var(--ns-border);
}
.ns-table tbody td { padding: 12px 14px; border-bottom: 1px solid var(--ns-border); }
.ns-table tbody tr:hover { background: var(--ns-surface-2); }
.ns-table tbody tr:last-child td { border-bottom: none; }

/* Auth */
.ns-auth { max-width: 380px; margin: 48px auto; }
.ns-field { margin-bottom: 16px; }
.ns-label { display: block; font-size: 13px; font-weight: 500; color: var(--ns-muted); margin-bottom: 6px; }
.ns-input {
    width: 100%; height: 42px; padding: 0 12px; font-size: 15px; font-family: var(--ns-font);
    background: var(--ns-surface); color: var(--ns-text);
    border: 1px solid var(--ns-border-strong); border-radius: var(--ns-radius-sm);
}
.ns-input:focus { outline: none; border-color: var(--ns-brand); box-shadow: 0 0 0 3px var(--ns-brand-tint); }
.ns-alert { padding: 12px 14px; border-radius: var(--ns-radius-sm); font-size: 14px; margin-bottom: 16px; }
.ns-alert-danger { background: var(--ns-danger-tint); color: var(--ns-danger); }
.ns-alert-success { background: var(--ns-success-tint); color: var(--ns-success); }

/* Honeypot: off-screen decoy field for the public forms — hidden from humans, not from bots.
   Positioned off-screen (not display:none) so naive scrapers still see and fill it. */
.ns-hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

/* ---- Modernize the legacy Bootstrap-3 form markup (EditMaterial) without editing it ---- */
.panel { background: var(--ns-surface); border: 1px solid var(--ns-border); border-radius: var(--ns-radius); margin-bottom: 20px; box-shadow: var(--ns-shadow); }
.panel-body { padding: 22px 24px; }
.page-header { font-size: 22px; font-weight: 600; border: none; padding: 0; margin: 0 0 6px; }
.page-header small { color: var(--ns-muted); font-size: 14px; font-weight: 400; }
.breadcrumb { background: none; padding: 0; font-size: 13px; color: var(--ns-muted); }
.breadcrumb > li, .breadcrumb a { color: var(--ns-muted); }
.form-horizontal .form-group { padding: 16px 0; border-bottom: 1px solid var(--ns-border); margin: 0; }
.form-horizontal .form-group:last-child { border-bottom: none; }
.control-label { font-weight: 500; color: var(--ns-text); padding-top: 7px; }
.form-control {
    background: var(--ns-surface); color: var(--ns-text);
    border: 1px solid var(--ns-border-strong); border-radius: var(--ns-radius-sm);
    height: 40px; box-shadow: none; font-size: 15px;
}
.form-control:focus { border-color: var(--ns-brand); box-shadow: 0 0 0 3px var(--ns-brand-tint); }
select.form-control { height: 40px; }
.radio label { color: var(--ns-text); }
.field-unit { color: var(--ns-muted); font-size: 13px; }
.btn { border-radius: var(--ns-radius-sm); font-weight: 500; padding: 9px 18px; border: 1px solid var(--ns-border-strong); }
.btn-primary { background: var(--ns-brand); border-color: var(--ns-brand); padding: 10px 24px; }
.btn-primary:hover, .btn-primary:focus { background: var(--ns-brand-ink); border-color: var(--ns-brand-ink); }

/* Breadcrumb with separators */
.breadcrumb { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 8px; }
.breadcrumb > li { list-style: none; }
.breadcrumb > li + li::before { content: "/"; padding-right: 6px; color: var(--ns-border-strong); }
.breadcrumb > li.active { color: var(--ns-text); }

/* Top action bar (Back / Edit hazard) as buttons */
#page-functions { display: flex; gap: 10px; align-items: center; }
#page-functions br { display: none; }
#page-functions a {
    display: inline-flex; align-items: center; gap: 6px; font-size: 14px; font-weight: 500;
    padding: 8px 14px; border-radius: var(--ns-radius-sm);
    border: 1px solid var(--ns-border-strong); color: var(--ns-text);
}
#page-functions a:hover { background: var(--ns-surface-2); text-decoration: none; }

/* Constrain field width for readability; descriptive helper text muted */
.form-horizontal .form-control { max-width: 560px; }
.form-horizontal .col-md-9 > div:not(.radio):not([id]) { font-size: 13px; color: var(--ns-muted); margin-bottom: 10px; line-height: 1.5; }

/* Modern radios / checkboxes */
input[type="radio"], input[type="checkbox"] { accent-color: var(--ns-brand); width: 16px; height: 16px; vertical-align: -3px; margin-right: 8px; }
.radio { margin: 2px 0; }
.radio label { font-size: 14px; cursor: pointer; font-weight: 400; }

/* Unit suffix as a subtle tag */
.field-unit { display: inline-block; margin-left: 8px; padding: 2px 8px; background: var(--ns-surface-2); border-radius: 6px; font-size: 12px; color: var(--ns-muted); }

/* Make <select> obviously a dropdown: custom caret + reserved space */
select.form-control, select.ns-input {
    -webkit-appearance: none; -moz-appearance: none; appearance: none;
    background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23888780' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat; background-position: right 12px center; background-size: 16px;
    padding-right: 40px; cursor: pointer;
}
select.form-control:hover, select.ns-input:hover { border-color: var(--ns-brand); }

/* ---- Footer ---- */
.ns-footer {
    border-top: 1px solid var(--ns-border);
    background: var(--ns-surface);
    margin-top: 48px;
}
.ns-footer-inner {
    max-width: 1080px; margin: 0 auto; padding: 16px 24px;
    display: flex; align-items: center; justify-content: space-between;
    font-size: 13px; color: var(--ns-muted);
}
.ns-footer-inner a { color: var(--ns-muted); text-decoration: underline; }
.ns-footer-inner a:hover { color: var(--ns-text); }

/* ---- Validation: make Parsley errors loud and clear ---- */
.form-control.parsley-error, .ns-input.parsley-error, input.parsley-error, select.parsley-error, textarea.parsley-error {
    border-color: var(--ns-danger) !important;
    background-color: var(--ns-danger-tint);
}
.parsley-error:focus { outline: none; box-shadow: 0 0 0 3px rgba(210, 63, 63, 0.22) !important; }
.parsley-errors-list {
    list-style: none; margin: 8px 0 0; padding: 0;
    display: flex; flex-direction: column; gap: 4px;
}
.parsley-errors-list li {
    display: flex; align-items: center; gap: 7px;
    font-size: 13px; font-weight: 500; color: var(--ns-danger);
    background: var(--ns-danger-tint); border-left: 3px solid var(--ns-danger);
    border-radius: 0 6px 6px 0; padding: 6px 10px;
}
.parsley-errors-list li::before {
    content: "\26A0"; font-size: 13px; line-height: 1; flex: none;
}