/* ============================================================
   SafeOps — Application Stylesheet
   CSS variables, responsive sidebar layout, components
   ============================================================ */

/* ── Variables ─────────────────────────────────────────────── */
:root {
    --sidebar-width: 240px;
    --topbar-height: 60px;

    /* Sidebar */
    --sidebar-bg:          #0f172a;
    --sidebar-text:        #94a3b8;
    --sidebar-text-hover:  #e2e8f0;
    --sidebar-active-bg:   #1e293b;
    --sidebar-active-text: #60a5fa;
    --sidebar-border:      #1e293b;

    /* Main */
    --main-bg:     #f1f5f9;
    --topbar-bg:   #ffffff;
    --card-bg:     #ffffff;
    --border:      #e2e8f0;
    --text-primary:   #0f172a;
    --text-secondary: #64748b;
    --text-muted:     #94a3b8;

    /* Brand */
    --accent:      #2563eb;
    --accent-dark: #1d4ed8;
    --accent-light: #eff6ff;

    /* Status colours */
    --valid:       #16a34a;
    --valid-bg:    #f0fdf4;
    --attention:   #ca8a04;
    --attention-bg:#fefce8;
    --warning:     #d97706;
    --warning-bg:  #fffbeb;
    --critical:    #ea580c;
    --critical-bg: #fff7ed;
    --expired:     #dc2626;
    --expired-bg:  #fef2f2;
    --blocked:     #7c3aed;
    --blocked-bg:  #f5f3ff;

    /* Form */
    --input-border:  #cbd5e1;
    --input-focus:   #2563eb;
    --input-bg:      #ffffff;
    --input-radius:  6px;

    /* Spacing */
    --gap: 1.5rem;
    --radius: 8px;
    --radius-sm: 4px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0,0,0,.06);
    --shadow:    0 1px 3px rgba(0,0,0,.1), 0 1px 2px rgba(0,0,0,.06);
    --shadow-md: 0 4px 6px rgba(0,0,0,.07), 0 2px 4px rgba(0,0,0,.06);
}

/* ── Reset ──────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 15px; -webkit-text-size-adjust: 100%; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
       background: var(--main-bg); color: var(--text-primary); line-height: 1.5; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; }
button, input, select, textarea { font: inherit; }

/* ── App Shell ──────────────────────────────────────────────── */
.app-shell {
    display: flex;
    min-height: 100vh;
}

/* ── Sidebar ────────────────────────────────────────────────── */
.sidebar {
    width: var(--sidebar-width);
    background: var(--sidebar-bg);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0; left: 0; bottom: 0;
    z-index: 100;
    transition: transform .2s ease;
    overflow-y: auto;
}

.sidebar-header {
    padding: 1.25rem 1rem;
    border-bottom: 1px solid var(--sidebar-border);
}

.brand {
    display: flex;
    align-items: center;
    gap: .6rem;
}
.brand-icon { font-size: 1.4rem; }
.brand-name {
    font-size: 1.15rem;
    font-weight: 700;
    color: #f1f5f9;
    letter-spacing: -.01em;
}

.sidebar-nav {
    flex: 1;
    padding: .75rem 0;
}

.nav-item { position: relative; }

.nav-link {
    display: flex;
    align-items: center;
    gap: .6rem;
    padding: .6rem 1rem;
    color: var(--sidebar-text);
    text-decoration: none;
    cursor: pointer;
    border: none;
    background: none;
    width: 100%;
    text-align: left;
    font-size: .875rem;
    border-radius: 0;
    transition: color .15s, background .15s;
}
.nav-link:hover, .nav-link.active, .nav-link.open {
    color: var(--sidebar-text-hover);
    background: var(--sidebar-active-bg);
    text-decoration: none;
}
.nav-link.active { color: var(--sidebar-active-text); }

.nav-icon { flex-shrink: 0; opacity: .7; }
.nav-label { flex: 1; }
.nav-arrow { font-size: .65rem; transition: transform .2s; }
.nav-toggle.open .nav-arrow { transform: rotate(180deg); }
.nav-badge {
    background: var(--danger);
    color: #fff;
    font-size: .65rem;
    font-weight: 700;
    min-width: 18px;
    height: 18px;
    border-radius: 9px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0 5px;
    margin-right: .15rem;
    line-height: 1;
}

.nav-sub {
    display: none;
    padding: .25rem 0;
    background: rgba(0,0,0,.2);
}
.nav-sub.open { display: block; }

.nav-sub-link {
    display: block;
    padding: .45rem 1rem .45rem 2.5rem;
    color: var(--sidebar-text);
    font-size: .82rem;
    text-decoration: none;
    transition: color .15s;
}
.nav-sub-link:hover, .nav-sub-link.active {
    color: var(--sidebar-active-text);
    text-decoration: none;
}

.sidebar-footer {
    padding: 1rem;
    border-top: 1px solid var(--sidebar-border);
}
.user-card {
    display: flex;
    align-items: center;
    gap: .6rem;
    margin-bottom: .75rem;
}
.user-avatar {
    width: 32px; height: 32px;
    border-radius: 50%;
    background: var(--accent);
    color: #fff;
    display: flex; align-items: center; justify-content: center;
    font-size: .8rem; font-weight: 700;
    flex-shrink: 0;
}
.user-name { font-size: .8rem; color: #e2e8f0; font-weight: 600; }
.user-role { font-size: .7rem; color: var(--sidebar-text); }

.btn-logout {
    display: block;
    width: 100%;
    padding: .4rem;
    text-align: center;
    font-size: .8rem;
    color: var(--sidebar-text);
    border: 1px solid var(--sidebar-border);
    border-radius: var(--radius-sm);
    text-decoration: none;
    transition: color .15s, border-color .15s;
}
.btn-logout:hover { color: #f87171; border-color: #f87171; text-decoration: none; }

/* ── Main wrapper ───────────────────────────────────────────── */
.main-wrapper {
    flex: 1;
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ── Topbar ─────────────────────────────────────────────────── */
.topbar {
    height: var(--topbar-height);
    background: var(--topbar-bg);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    padding: 0 1.5rem;
    gap: 1rem;
    position: sticky;
    top: 0;
    z-index: 50;
    box-shadow: var(--shadow-sm);
}
.sidebar-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-secondary);
    padding: .25rem;
}
.page-title {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* ── Flash messages ─────────────────────────────────────────── */
.flash {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: .75rem 1.5rem;
    font-size: .875rem;
    gap: 1rem;
}
.flash-success { background: var(--valid-bg);    color: #166534; border-bottom: 2px solid var(--valid); }
.flash-error   { background: var(--expired-bg);  color: #991b1b; border-bottom: 2px solid var(--expired); }
.flash-warning { background: var(--warning-bg);  color: #92400e; border-bottom: 2px solid var(--warning); }
.flash-info    { background: var(--accent-light); color: #1e40af; border-bottom: 2px solid var(--accent); }
.flash-close {
    background: none; border: none; cursor: pointer;
    opacity: .6; font-size: 1rem; flex-shrink: 0;
}
.flash-close:hover { opacity: 1; }

/* ── Main content ───────────────────────────────────────────── */
.main-content {
    flex: 1;
    padding: var(--gap);
}

/* ── Cards ──────────────────────────────────────────────────── */
.card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
}
.card-header {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
}
.card-title { font-size: .95rem; font-weight: 600; color: var(--text-primary); }
.card-body { padding: 1.25rem; }

/* ── Stat tiles ─────────────────────────────────────────────── */
.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: var(--gap);
}
.stat-tile {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.25rem;
    display: flex;
    align-items: flex-start;
    gap: .9rem;
}
.stat-tile__icon {
    width: 44px; height: 44px;
    border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.2rem;
    flex-shrink: 0;
}
.stat-tile__icon--blue   { background: var(--accent-light); }
.stat-tile__icon--green  { background: var(--valid-bg); }
.stat-tile__icon--yellow { background: var(--warning-bg); }
.stat-tile__icon--red    { background: var(--expired-bg); }
.stat-tile__icon--orange { background: var(--critical-bg); }
.stat-tile__icon--purple { background: var(--blocked-bg); }

.stat-tile__value { font-size: 1.8rem; font-weight: 700; line-height: 1; }
.stat-tile__label { font-size: .78rem; color: var(--text-secondary); margin-top: .2rem; }

/* ── Badges ─────────────────────────────────────────────────── */
.badge {
    display: inline-flex;
    align-items: center;
    padding: .2em .55em;
    border-radius: 99px;
    font-size: .73rem;
    font-weight: 600;
    white-space: nowrap;
}
.badge-valid     { background: var(--valid-bg);     color: var(--valid); }
.badge-attention { background: var(--attention-bg); color: var(--attention); }
.badge-warning   { background: var(--warning-bg);   color: var(--warning); }
.badge-critical  { background: var(--critical-bg);  color: var(--critical); }
.badge-expired   { background: var(--expired-bg);   color: var(--expired); }
.badge-blocked   { background: var(--blocked-bg);   color: var(--blocked); }
.badge-active    { background: var(--valid-bg);     color: var(--valid); }
.badge-inactive  { background: #f1f5f9; color: var(--text-secondary); }
.badge-employee      { background: var(--accent-light); color: var(--accent); }
.badge-subcontractor { background: var(--warning-bg); color: var(--warning); }
.badge-casual        { background: #f1f5f9; color: var(--text-secondary); }
.badge-class         { background: var(--accent-light); color: var(--accent); font-family: monospace; letter-spacing: .03em; }

/* ── Tables ─────────────────────────────────────────────────── */
.table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius);
    border: 1px solid var(--border);
}
table {
    width: 100%;
    border-collapse: collapse;
    font-size: .875rem;
}
thead { background: #f8fafc; }
th {
    padding: .65rem 1rem;
    text-align: left;
    font-size: .75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .04em;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
}
td {
    padding: .75rem 1rem;
    border-bottom: 1px solid var(--border);
    vertical-align: middle;
}
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background: #f8fafc; }
.td-muted { color: var(--text-muted); font-size: .82rem; }

/* ── Buttons ─────────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: .4rem;
    padding: .5rem 1rem;
    border-radius: var(--radius-sm);
    font-size: .875rem;
    font-weight: 500;
    border: 1px solid transparent;
    cursor: pointer;
    text-decoration: none;
    transition: background .15s, color .15s, border-color .15s;
    white-space: nowrap;
}
.btn:hover { text-decoration: none; }
.btn:disabled { opacity: .5; cursor: not-allowed; }

.btn-primary  { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn-primary:hover { background: var(--accent-dark); border-color: var(--accent-dark); }

.btn-secondary { background: #fff; color: var(--text-primary); border-color: var(--border); }
.btn-secondary:hover { background: #f8fafc; }

.btn-danger  { background: var(--expired); color: #fff; border-color: var(--expired); }
.btn-danger:hover { background: #b91c1c; }

.btn-success { background: var(--valid); color: #fff; border-color: var(--valid); }
.btn-success:hover { background: #15803d; }

.btn-warning { background: var(--warning); color: #fff; }
.btn-warning:hover { background: #b45309; }

.btn-sm { padding: .3rem .65rem; font-size: .8rem; }
.btn-xs { padding: .18rem .45rem; font-size: .73rem; }

/* ── Forms ──────────────────────────────────────────────────── */
.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 1rem;
}
.form-grid-2 { grid-template-columns: repeat(2, 1fr); }
.form-grid-3 { grid-template-columns: repeat(3, 1fr); }
.form-full   { grid-column: 1 / -1; }

.form-group { display: flex; flex-direction: column; gap: .35rem; }
.form-label {
    font-size: .8rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: .04em;
}
.form-label .req { color: var(--expired); }

.form-control {
    width: 100%;
    padding: .5rem .75rem;
    border: 1px solid var(--input-border);
    border-radius: var(--input-radius);
    background: var(--input-bg);
    color: var(--text-primary);
    font-size: .875rem;
    transition: border-color .15s, box-shadow .15s;
}
.form-control:focus {
    outline: none;
    border-color: var(--input-focus);
    box-shadow: 0 0 0 3px rgba(37,99,235,.12);
}
.form-control:invalid { border-color: var(--expired); }
select.form-control { cursor: pointer; }
textarea.form-control { resize: vertical; min-height: 80px; }

.form-hint { font-size: .75rem; color: var(--text-muted); }
.form-error { font-size: .75rem; color: var(--expired); }

.form-actions {
    display: flex;
    align-items: center;
    gap: .75rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border);
    margin-top: 1rem;
}

/* ── Filters / Search bar ───────────────────────────────────── */
.filter-bar {
    display: flex;
    align-items: center;
    gap: .75rem;
    flex-wrap: wrap;
}
.search-input {
    flex: 1;
    min-width: 200px;
    max-width: 320px;
}

/* ── Pagination ─────────────────────────────────────────────── */
.pagination {
    display: flex;
    align-items: center;
    gap: .4rem;
    padding: .75rem 1rem;
    border-top: 1px solid var(--border);
    font-size: .82rem;
}
.page-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px; height: 32px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    text-decoration: none;
    transition: background .15s;
}
.page-link:hover { background: #f1f5f9; text-decoration: none; }
.page-link.active {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}
.page-info { color: var(--text-muted); margin-left: auto; }

/* ── Detail rows ────────────────────────────────────────────── */
.detail-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 1rem;
}
.detail-item { }
.detail-label { font-size: .73rem; font-weight: 600; text-transform: uppercase;
                letter-spacing: .04em; color: var(--text-muted); margin-bottom: .2rem; }
.detail-value { font-size: .875rem; color: var(--text-primary); }

/* ── Section headers ────────────────────────────────────────── */
.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    gap: .75rem;
}
.section-title { font-size: 1rem; font-weight: 600; }

/* ── Alert / compliance blocks ──────────────────────────────── */
.compliance-bar {
    display: flex;
    align-items: center;
    gap .75rem;
    padding: 1rem 1.25rem;
    border-radius: var(--radius);
    margin-bottom: .75rem;
    border-left: 4px solid;
}
.compliance-bar--valid    { background: var(--valid-bg);    border-color: var(--valid); }
.compliance-bar--warning  { background: var(--warning-bg);  border-color: var(--warning); }
.compliance-bar--critical { background: var(--critical-bg); border-color: var(--critical); }
.compliance-bar--blocked  { background: var(--expired-bg);  border-color: var(--expired); }

/* ── Login page ─────────────────────────────────────────────── */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--sidebar-bg);
    padding: 1.5rem;
}
.login-box {
    background: var(--card-bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    width: 100%;
    max-width: 420px;
    overflow: hidden;
}
.login-header {
    background: #1e293b;
    padding: 2rem 2rem 1.5rem;
    text-align: center;
}
.login-brand {
    font-size: 1.6rem;
    font-weight: 800;
    color: #f1f5f9;
    letter-spacing: -.02em;
}
.login-tagline {
    font-size: .8rem;
    color: var(--sidebar-text);
    margin-top: .3rem;
}
.login-body { padding: 2rem; }
.login-title { font-size: 1rem; font-weight: 600; margin-bottom: 1.25rem; }

.login-step { display: none; }
.login-step.active { display: block; }

.otp-input {
    letter-spacing: .25em;
    font-size: 1.4rem;
    text-align: center;
    font-weight: 700;
}

/* ── Setup page ─────────────────────────────────────────────── */
.setup-page { min-height: 100vh; background: var(--sidebar-bg); padding: 2rem 1.5rem; }
.setup-box {
    background: var(--card-bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    max-width: 720px;
    margin: 0 auto;
    overflow: hidden;
}
.setup-header {
    background: #1e293b;
    padding: 2rem;
    color: #f1f5f9;
}
.setup-step { padding: 2rem; border-bottom: 1px solid var(--border); }
.setup-step:last-child { border-bottom: none; }
.step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px; height: 28px;
    background: var(--accent);
    color: #fff;
    border-radius: 50%;
    font-size: .8rem;
    font-weight: 700;
    margin-right: .5rem;
}

/* ── TOTP QR ─────────────────────────────────────────────────── */
.totp-setup {
    text-align: center;
    padding: 1rem 0;
}
.totp-qr {
    width: 200px; height: 200px;
    background: #eee;
    border: 2px solid var(--border);
    border-radius: var(--radius);
    margin: 0 auto 1rem;
    display: flex; align-items: center; justify-content: center;
    font-size: .8rem; color: var(--text-muted);
}
.totp-secret {
    font-family: monospace;
    font-size: .85rem;
    background: #f1f5f9;
    padding: .4rem .75rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    word-break: break-all;
    display: inline-block;
    margin-bottom: 1rem;
}

/* ── Tabs ────────────────────────────────────────────────────── */
.tabs {
    display: flex;
    border-bottom: 2px solid var(--border);
    margin-bottom: 1.25rem;
    gap: 0;
}
.tab-btn {
    padding: .65rem 1.1rem;
    border: none;
    background: none;
    font-size: .875rem;
    color: var(--text-secondary);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    font-weight: 500;
    transition: color .15s, border-color .15s;
}
.tab-btn.active { color: var(--accent); border-bottom-color: var(--accent); }
.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* ── Alert items ────────────────────────────────────────────── */
.alert-item {
    display: flex;
    align-items: center;
    gap: .75rem;
    padding: .6rem .75rem;
    border-radius: var(--radius-sm);
    background: var(--main-bg);
    border: 1px solid var(--border);
    margin-bottom: .4rem;
    font-size: .85rem;
}
.alert-item:last-child { margin-bottom: 0; }

/* ── Empty state ────────────────────────────────────────────── */
.empty-state {
    text-align: center;
    padding: 3rem 1.5rem;
    color: var(--text-muted);
}
.empty-state p { font-size: .9rem; }

/* ── File upload zone ───────────────────────────────────────── */
.upload-zone {
    border: 2px dashed var(--input-border);
    border-radius: var(--radius);
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    transition: border-color .15s;
}
.upload-zone:hover, .upload-zone.drag-over { border-color: var(--accent); }
.upload-zone input[type="file"] { display: none; }

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 900px) {
    .sidebar {
        transform: translateX(-100%);
    }
    .sidebar.open {
        transform: translateX(0);
    }
    .main-wrapper {
        margin-left: 0;
    }
    .sidebar-toggle {
        display: block;
    }
    .form-grid-2, .form-grid-3 {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 600px) {
    .stat-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .main-content { padding: 1rem; }
    .topbar { padding: 0 1rem; }
}