/* ============================================================
   SCIENCE LAB INVENTORY — REFINED UI
   Palette inspired by the supplied Avalon Edge image:
   Teal #4281A2 · Gold #F8AE35 · Deep Navy #183247
   Soft background #F5F8FA · White #FFFFFF
   ============================================================ */

:root {
    --teal: #4281A2;
    --teal-dark: #2F6D8B;
    --teal-deep: #24566F;
    --teal-soft: #EAF4F8;
    --gold: #F8AE35;
    --gold-dark: #D98E18;
    --gold-soft: #FFF4DE;
    --navy: #183247;
    --navy-2: #23455A;
    --ink: #1B3446;
    --muted: #708493;
    --muted-2: #8EA0AC;
    --page: #F5F8FA;
    --surface: #FFFFFF;
    --surface-soft: #F8FBFC;
    --line: #DCE7EC;
    --line-strong: #CBDCE4;
    --success: #2E7D5A;
    --success-soft: #EAF7F0;
    --warning: #B66A0A;
    --warning-soft: #FFF4E5;
    --danger: #B33A3A;
    --danger-soft: #FFF0F0;
    --shadow-sm: 0 2px 8px rgba(24, 50, 71, .05);
    --shadow-md: 0 10px 28px rgba(24, 50, 71, .08);
    --shadow-lg: 0 18px 48px rgba(24, 50, 71, .12);
    --radius-sm: 10px;
    --radius-md: 16px;
    --radius-lg: 22px;
    --transition: 180ms ease;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: var(--page);
    color: var(--ink);
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
}
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }
a { color: inherit; text-decoration: none; }
.hidden { display: none !important; }
.mt-20 { margin-top: 40px; }

/* ============================================================
   LOGIN
   ============================================================ */
.login-page {
    min-height: 100vh;
    background:
        radial-gradient(circle at 15% 15%, rgba(248,174,53,.13), transparent 28%),
        radial-gradient(circle at 85% 80%, rgba(66,129,162,.15), transparent 32%),
        linear-gradient(145deg, #F7FAFB 0%, #EEF5F7 100%);
}
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 28px;
}
.login-card {
    width: min(440px, 100%);
    background: rgba(255,255,255,.96);
    border: 1px solid rgba(220,231,236,.95);
    border-radius: 24px;
    padding: 42px;
    box-shadow: var(--shadow-lg);
}
.login-logo {
    width: 72px;
    height: 72px;
    margin: 0 auto 20px;
    border-radius: 20px;
    background: linear-gradient(145deg, var(--teal), var(--teal-dark));
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    box-shadow: 0 10px 24px rgba(66,129,162,.24);
}
.login-card h1 { text-align: center; font-size: 32px; letter-spacing: -.03em; color: var(--navy); }
.login-subtitle { margin: 7px 0 28px; text-align: center; color: var(--muted); }
.login-info {
    margin-top: 24px;
    padding: 15px 16px;
    background: var(--surface-soft);
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    color: var(--muted);
    font-size: 13px;
}
.login-info strong { color: var(--navy); }
.login-info p { margin-top: 4px; }
.login-error, .form-error {
    margin: 10px 0;
    padding: 11px 13px;
    border-radius: var(--radius-sm);
    background: var(--danger-soft);
    border: 1px solid #F1D0D0;
    color: var(--danger);
    font-size: 14px;
}

/* ============================================================
   APP SHELL / SIDEBAR
   ============================================================ */
.app-layout { min-height: 100vh; }
.sidebar {
    position: fixed;
    inset: 0 auto 0 0;
    width: 276px;
    background: linear-gradient(180deg, #173347 0%, #193C50 48%, #163144 100%);
    color: #fff;
    display: flex;
    flex-direction: column;
    z-index: 1000;
    overflow-y: auto;
    box-shadow: 8px 0 30px rgba(24,50,71,.10);
}
.sidebar-header {
    min-height: 104px;
    padding: 20px 22px;
    display: flex;
    align-items: center;
    border-bottom: 1px solid rgba(255,255,255,.09);
}
.sidebar-logo { display: flex; align-items: center; gap: 13px; width: 100%; }
.sidebar-logo-icon {
    width: 50px;
    height: 50px;
    flex: 0 0 50px;
    border-radius: 15px;
    background: rgba(248,174,53,.14);
    border: 1px solid rgba(248,174,53,.28);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 25px;
}
.sidebar-logo-text h2 { font-size: 19px; line-height: 1.2; letter-spacing: -.02em; }
.sidebar-logo-text p { color: #AFC2CC; font-size: 12px; margin-top: 4px; }
.sidebar-nav { width: 100%; padding: 20px 14px; display: flex; flex-direction: column; gap: 5px; }
.sidebar-nav a {
    width: 100%;
    min-height: 48px;
    padding: 0 13px;
    display: flex;
    align-items: center;
    gap: 12px;
    border: 1px solid transparent;
    border-radius: 12px;
    color: #C8D7DE;
    font-size: 14px;
    font-weight: 600;
    transition: background var(--transition), color var(--transition), border-color var(--transition), transform var(--transition);
}
.sidebar-nav a:hover {
    background: rgba(255,255,255,.075);
    color: #fff;
    border-color: rgba(255,255,255,.07);
    transform: translateX(2px);
}
.sidebar-nav a.active {
    background: rgba(66,129,162,.34);
    border-color: rgba(132,190,215,.20);
    color: #fff;
    box-shadow: inset 3px 0 0 var(--gold);
}
.nav-icon {
    width: 28px;
    min-width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
    border-radius: 8px;
    background: rgba(255,255,255,.055);
    font-size: 15px;
}
.sidebar-nav a.active .nav-icon { background: rgba(248,174,53,.14); }
.nav-text { flex: 1; display: block; line-height: 1.3; }
.sidebar-footer { margin-top: auto; padding: 16px 14px 18px; border-top: 1px solid rgba(255,255,255,.09); }
.logout-button {
    width: 100%;
    min-height: 44px;
    background: rgba(255,255,255,.055);
    border: 1px solid rgba(255,255,255,.12);
    border-radius: 11px;
    color: #E7EFF3;
    font-weight: 600;
    transition: var(--transition);
}
.logout-button:hover { background: rgba(255,255,255,.10); border-color: rgba(255,255,255,.18); }

/* ============================================================
   MAIN CONTENT / HEADERS
   ============================================================ */
.main-content {
    width: calc(100% - 276px);
    min-height: 100vh;
    margin-left: 276px;
    padding: 34px 48px 64px;
}
.page-header {
    min-height: 82px;
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 30px;
    margin-bottom: 28px;
}
.page-header-label, .section-eyebrow { color: var(--teal); font-size: 13px; font-weight: 700; letter-spacing: .07em; text-transform: uppercase; margin-bottom: 6px; }
.page-header h1 { font-size: clamp(32px, 3vw, 42px); line-height: 1.08; letter-spacing: -.035em; color: var(--navy); }
.page-header-right {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    flex: 0 0 auto;
    min-height: 44px;
    padding: 8px 14px 8px 10px;
    color: var(--muted);
    font-size: 12px;
    font-weight: 600;
    text-align: left;
    white-space: nowrap;
    background: rgba(255,255,255,.88);
    border: 1px solid var(--line);
    border-radius: 14px;
    box-shadow: 0 4px 14px rgba(24,50,71,.05);
}
.page-header-right::before {
    content: "";
    width: 30px;
    height: 30px;
    flex: 0 0 30px;
    border-radius: 9px;
    background: var(--teal-soft);
    border: 1px solid rgba(66,129,162,.14);
    box-shadow: inset 0 0 0 1px rgba(255,255,255,.55);
    background-image: radial-gradient(circle at 50% 35%, var(--teal) 0 4px, transparent 4.5px), linear-gradient(var(--teal), var(--teal));
    background-size: 100% 100%, 12px 7px;
    background-position: center, center 72%;
    background-repeat: no-repeat;
}
.page-header-right strong {
    display: inline;
    color: var(--navy);
    font-size: 14px;
    font-weight: 750;
    margin: 0 0 0 3px;
}


/* ============================================================
   SECTIONS / PANELS
   ============================================================ */
.welcome-section, .panel, .material-details-card {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}
.welcome-section {
    position: relative;
    overflow: hidden;
    padding: 30px 32px;
    margin-bottom: 36px;
    background: linear-gradient(135deg, #FFFFFF 0%, #F5FAFC 100%);
}
.welcome-section::after {
    content: "";
    position: absolute;
    width: 190px;
    height: 190px;
    right: -75px;
    top: -85px;
    border-radius: 50%;
    background: rgba(66,129,162,.08);
}
.welcome-section > p:first-child { color: var(--teal); font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: .07em; }
.welcome-section h2 { margin: 5px 0 8px; font-size: 29px; letter-spacing: -.025em; color: var(--navy); }
.welcome-section p:last-child { color: var(--muted); font-size: 15px; }
.section-heading { margin-bottom: 18px; }
.section-heading p { color: var(--teal); font-size: 13px; font-weight: 700; letter-spacing: .07em; text-transform: uppercase; margin-bottom: 5px; }
.section-heading h2 { font-size: 25px; line-height: 1.2; letter-spacing: -.025em; color: var(--navy); }
.panel { padding: 26px; }

/* ============================================================
   DASHBOARD ALERT BAR
   ============================================================ */
.dashboard-alert {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    margin: 0 0 34px;
    padding: 16px 18px;
    background: linear-gradient(90deg, #FDF9F0, #FFFDF9);
    border: 1px solid #F0DEB8;
    border-radius: 14px;
    box-shadow: 0 4px 14px rgba(24,50,71,.04);
}
.dashboard-alert-main { display: flex; align-items: center; gap: 13px; min-width: 0; }
.dashboard-alert-icon {
    width: 40px;
    height: 40px;
    flex: 0 0 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    background: var(--gold-soft);
    color: var(--gold-dark);
    font-size: 18px;
}
.dashboard-alert-copy strong { display: block; color: var(--navy); font-size: 14px; }
.dashboard-alert-copy span { display: block; color: var(--muted); font-size: 13px; margin-top: 2px; }
.dashboard-alert-link {
    flex: 0 0 auto;
    display: inline-flex;
    align-items: center;
    gap: 7px;
    min-height: 38px;
    padding: 0 13px;
    border-radius: 10px;
    color: var(--teal-deep);
    background: rgba(66,129,162,.08);
    border: 1px solid rgba(66,129,162,.15);
    font-size: 13px;
    font-weight: 700;
    transition: var(--transition);
}
.dashboard-alert-link:hover { background: rgba(66,129,162,.14); transform: translateY(-1px); }
.dashboard-alert.is-clear { background: linear-gradient(90deg, #F7FBF9, #FFFFFF); border-color: #D6E9DE; }
.dashboard-alert.is-clear .dashboard-alert-icon { background: var(--success-soft); color: var(--success); }

/* ============================================================
   LAB CARDS
   ============================================================ */
.lab-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.lab-card {
    min-height: 238px;
    padding: 27px;
    position: relative;
    overflow: hidden;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    display: flex;
    flex-direction: column;
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.lab-card::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--teal), var(--gold));
    opacity: .85;
}
.lab-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: #C8DCE5; }
.lab-card-icon {
    width: 48px;
    height: 48px;
    margin-bottom: 19px;
    border-radius: 14px;
    background: var(--teal-soft);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
}
.lab-card h3 { font-size: 20px; letter-spacing: -.02em; margin-bottom: 9px; color: var(--navy); }
.lab-card p { color: var(--muted); font-size: 14px; line-height: 1.6; margin-bottom: 18px; }
.lab-card-link { margin-top: auto; color: var(--teal-dark); font-size: 13px; font-weight: 800; }

/* ============================================================
   STATS
   ============================================================ */
.stats-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.stat-card {
    position: relative;
    overflow: hidden;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 14px;
    padding: 21px;
    box-shadow: var(--shadow-sm);
}
.stat-card::before { content: ""; position: absolute; left: 0; top: 0; width: 3px; height: 100%; background: var(--teal); }
.stat-card p { color: var(--muted); font-size: 13px; font-weight: 600; }
.stat-card h3 { margin-top: 6px; font-size: 30px; letter-spacing: -.04em; color: var(--navy); }

/* ============================================================
   BUTTONS
   ============================================================ */
.btn, .primary-button, .secondary-button, .danger-button, .danger-outline-button {
    min-height: 42px;
    padding: 9px 16px;
    border-radius: 10px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    font-weight: 700;
    font-size: 13px;
    border: 1px solid transparent;
    transition: transform var(--transition), box-shadow var(--transition), background var(--transition), border-color var(--transition);
}
.btn-primary, .primary-button { background: var(--teal); color: #fff; box-shadow: 0 5px 14px rgba(66,129,162,.16); }
.btn-primary:hover, .primary-button:hover { background: var(--teal-dark); transform: translateY(-1px); box-shadow: 0 8px 18px rgba(66,129,162,.20); }
.secondary-button { background: #fff; border-color: var(--line-strong); color: var(--navy-2); }
.secondary-button:hover { background: var(--surface-soft); border-color: #B8CDD7; transform: translateY(-1px); }
.danger-button { background: var(--danger); color: #fff; }
.danger-button:hover { background: #9F3030; transform: translateY(-1px); }
.danger-outline-button { background: #fff; border-color: #E4AAAA; color: var(--danger); }
.danger-outline-button:hover { background: var(--danger-soft); }
.login-button { width: 100%; margin-top: 8px; min-height: 46px; }

/* ============================================================
   INVENTORY
   ============================================================ */
.inventory-toolbar { margin-bottom: 25px; display: flex; align-items: flex-end; justify-content: space-between; gap: 25px; }
.inventory-toolbar h2 { font-size: 26px; letter-spacing: -.025em; color: var(--navy); }
.toolbar-description { color: var(--muted); margin-top: 4px; font-size: 14px; }
.toolbar-actions { display: flex; align-items: center; justify-content: flex-end; flex-wrap: wrap; gap: 9px; }
.search-input, .select-input, .text-input {
    height: 43px;
    padding: 0 12px;
    background: #fff;
    border: 1px solid var(--line-strong);
    border-radius: 10px;
    outline: none;
    color: var(--ink);
    transition: border-color var(--transition), box-shadow var(--transition);
}
.search-input { width: 260px; }
.search-input:focus, .select-input:focus, .text-input:focus,
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color: var(--teal); box-shadow: 0 0 0 3px rgba(66,129,162,.10); }
.inventory-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 17px; }
.material-card {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 14px;
    padding: 21px;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.material-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: #BFD7E2; }
.material-card-clickable { cursor: pointer; }
.material-card-clickable:focus-visible {
    outline: 3px solid rgba(66,129,162,.22);
    outline-offset: 3px;
    border-color: var(--teal);
}
.material-card-clickable:active { transform: translateY(-1px) scale(.998); }
.card-action { transition: color var(--transition), transform var(--transition); }
.material-card:hover .card-action { transform: translateX(3px); }
.material-card-top { display: flex; justify-content: space-between; gap: 8px; margin-bottom: 15px; }
.material-card h3 { font-size: 19px; letter-spacing: -.02em; margin-bottom: 4px; color: var(--navy); }
.material-category { color: var(--muted); font-size: 13px; }
.type-badge, .stock-badge, .order-status { display: inline-flex; align-items: center; min-height: 27px; padding: 4px 9px; border-radius: 999px; font-size: 11px; font-weight: 800; }
.type-badge { background: var(--teal-soft); color: var(--teal-deep); }
.stock-ok { background: var(--success-soft); color: var(--success); }
.stock-low { background: var(--warning-soft); color: var(--warning); }
.material-card-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 9px; margin: 18px 0 11px; }
.material-card-stats div { background: var(--surface-soft); border: 1px solid #E8EFF2; padding: 11px; border-radius: 10px; }
.material-card-stats span { display: block; color: var(--muted-2); font-size: 11px; }
.material-card-stats strong { display: block; margin-top: 3px; color: var(--navy); font-size: 14px; }
.small-muted { color: var(--muted-2); font-size: 12px; margin-bottom: 13px; }
.expiry-line { font-size: 12px; margin-bottom: 13px; }
.expiry-ok { color: var(--success); }
.expiry-warning { color: var(--warning); }
.expiry-danger { color: var(--danger); }
.card-action { margin-top: auto; color: var(--teal-dark); font-size: 13px; font-weight: 800; padding-top: 11px; }

/* ============================================================
   MATERIAL DETAILS
   ============================================================ */
.back-button { display: inline-flex; color: var(--teal-dark); font-weight: 700; font-size: 13px; margin-bottom: 18px; }
.back-button:hover { color: var(--teal-deep); }
.material-details-card { padding: 28px; }
.detail-header { display: flex; justify-content: space-between; gap: 20px; margin-bottom: 25px; }
.detail-header h2 { font-size: 29px; margin-top: 8px; letter-spacing: -.03em; color: var(--navy); }
.detail-header p { color: var(--muted); font-size: 14px; }
.detail-header-actions { display: flex; gap: 8px; }
.details-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
.detail-item { background: var(--surface-soft); border: 1px solid #E6EEF1; border-radius: 11px; padding: 14px; }
.detail-item span { display: block; color: var(--muted-2); font-size: 11px; margin-bottom: 4px; }
.detail-item strong { font-size: 16px; color: var(--navy); }
.material-actions { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 25px; }
.text-danger { color: var(--danger); }
.text-success { color: var(--success); }

/* ============================================================
   TABLES
   ============================================================ */
.table-container { width: 100%; overflow-x: auto; background: #fff; border: 1px solid var(--line); border-radius: 14px; box-shadow: var(--shadow-sm); }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 13px 15px; border-bottom: 1px solid #E7EEF1; text-align: left; }
th { background: #F7FAFB; color: #5D7482; font-size: 11px; text-transform: uppercase; letter-spacing: .055em; white-space: nowrap; }
td { color: #294354; font-size: 13px; }
tbody tr:hover td { background: #FBFDFD; }
tr:last-child td { border-bottom: none; }

/* ============================================================
   ORDERS / FILTERS
   ============================================================ */
.order-create-bar, .filter-row { display: flex; flex-wrap: wrap; gap: 9px; margin-bottom: 18px; }
.order-create-bar .select-input { min-width: 280px; }
.order-create-bar .text-input { width: 170px; }
.status-to-be-ordered { background: var(--warning-soft); color: var(--warning); }
.status-ordered { background: var(--teal-soft); color: var(--teal-deep); }
.status-received { background: var(--success-soft); color: var(--success); }
.status-select { min-height: 35px; border: 1px solid var(--line-strong); border-radius: 8px; padding: 0 8px; background: #fff; color: var(--ink); }

/* ============================================================
   NOTIFICATIONS
   ============================================================ */
.notification-list { display: flex; flex-direction: column; gap: 10px; }
.notification-item {
    display: flex;
    gap: 13px;
    padding: 14px 15px;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: #fff;
    box-shadow: 0 2px 8px rgba(24,50,71,.035);
}
.notification-icon { width: 32px; height: 32px; flex: 0 0 32px; display: flex; align-items: center; justify-content: center; border-radius: 9px; background: var(--surface-soft); font-size: 15px; }
.notification-item strong { display: block; color: var(--navy); font-size: 13px; }
.notification-item p { margin-top: 3px; color: var(--muted); font-size: 13px; }
.notification-warning { border-left: 3px solid var(--gold); }
.notification-danger { border-left: 3px solid var(--danger); }
.notification-info { border-left: 3px solid var(--teal); }

/* ============================================================
   EMPTY STATES
   ============================================================ */
.empty-state { padding: 45px 24px; text-align: center; background: #fff; border: 1px dashed var(--line-strong); border-radius: 14px; }
.full-width { grid-column: 1 / -1; }
.empty-state-icon { width: 44px; height: 44px; margin: 0 auto 10px; border-radius: 13px; background: var(--teal-soft); display: flex; align-items: center; justify-content: center; font-size: 20px; }
.empty-state h3 { color: var(--navy); font-size: 16px; }
.empty-state p { color: var(--muted); margin-top: 5px; font-size: 13px; }

/* ============================================================
   FORMS / MODALS
   ============================================================ */
.form-group { display: flex; flex-direction: column; gap: 6px; margin-bottom: 15px; }
.form-group label { font-size: 13px; font-weight: 700; color: #3E5869; }
.form-group input, .form-group select, .form-group textarea { width: 100%; padding: 10px 12px; background: #fff; border: 1px solid var(--line-strong); border-radius: 9px; outline: none; color: var(--ink); transition: border-color var(--transition), box-shadow var(--transition); }
.form-group textarea { min-height: 95px; resize: vertical; }
.form-group small { color: var(--muted-2); font-size: 11px; }
.form-row { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 13px; }
.modal-overlay { position: fixed; inset: 0; z-index: 2000; background: rgba(16,39,54,.60); backdrop-filter: blur(4px); display: flex; align-items: center; justify-content: center; padding: 22px; }
.modal-card { width: min(680px, 100%); max-height: 92vh; overflow-y: auto; background: #fff; border: 1px solid rgba(255,255,255,.7); border-radius: 18px; box-shadow: 0 28px 70px rgba(0,0,0,.22); }
.modal-header { padding: 20px 23px; border-bottom: 1px solid #E7EEF1; display: flex; align-items: center; justify-content: space-between; }
.modal-header h2 { font-size: 20px; color: var(--navy); }
.modal-close { border: 0; background: transparent; font-size: 26px; color: #71838F; line-height: 1; border-radius: 8px; padding: 2px 7px; }
.modal-close:hover { background: var(--surface-soft); color: var(--navy); }
.modal-body { padding: 23px; }
.modal-actions { display: flex; justify-content: flex-end; gap: 9px; margin-top: 20px; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1200px) {
    .main-content { padding: 28px 30px 50px; }
    .lab-grid { grid-template-columns: 1fr; }
    .inventory-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .stats-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .details-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 800px) {
    .sidebar { position: relative; width: 100%; min-height: auto; box-shadow: none; }
    .sidebar-nav { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); padding: 12px 15px; }
    .main-content { width: 100%; margin-left: 0; padding: 24px 20px 40px; }
    .page-header { flex-direction: column; gap: 10px; }
    .page-header-right { width: fit-content; max-width: 100%; }
    .page-header h1 { font-size: 32px; }
    .inventory-toolbar { align-items: stretch; flex-direction: column; }
    .toolbar-actions { justify-content: stretch; }
    .search-input { flex: 1; width: auto; }
    .dashboard-alert { align-items: flex-start; flex-direction: column; }
    .dashboard-alert-link { width: 100%; justify-content: center; }
}
@media (max-width: 560px) {
    .sidebar-nav { grid-template-columns: 1fr; }
    .inventory-grid, .stats-grid, .details-grid { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; }
    .detail-header { flex-direction: column; }
    .detail-header-actions { flex-wrap: wrap; }
    .toolbar-actions { flex-direction: column; align-items: stretch; }
    .search-input { width: 100%; }
    .login-card { padding: 30px 22px; }
    .main-content { padding-left: 15px; padding-right: 15px; }
    .welcome-section { padding: 25px 22px; }
}


/* Expiry option controls */
.checkbox-row {
    display: flex;
    align-items: center;
    gap: 9px;
    margin-top: 10px;
    font-size: 0.9rem;
    cursor: pointer;
}
.checkbox-row input[type="checkbox"] {
    width: 16px;
    height: 16px;
    margin: 0;
    accent-color: #4281A2;
}
.checkbox-row span {
    color: #334155;
}

/* Interaction polish */
button:disabled,
input:disabled,
select:disabled {
    opacity: .62;
    cursor: not-allowed;
}

.form-group input[readonly] {
    background: var(--surface-soft);
    color: var(--navy-2);
}

.material-card-clickable .card-action {
    pointer-events: none;
}