/* ==========================================================================
   Regent HR Management System - Stylesheet
   Restrained professional palette: navy primary, white surface,
   light-blue accent. Status colours are used only as small functional
   badges, never as decoration.
   ========================================================================== */

html {
    background-color: #f4f5f8;
}

:root {
    --navy: #1a237e;
    --navy-dark: #12185c;
    --accent: #1565c0;
    --white: #ffffff;
    --bg: #f4f5f8;
    --border: #e0e2eb;
    --text: #24262f;
    --text-muted: #6b6f80;

    --success: #2e7d32;
    --success-bg: #e6f2e7;
    --danger: #c62828;
    --danger-bg: #fbe9e9;
    --warning: #ef6c00;
    --warning-bg: #fdf0e1;

    --sidebar-width: 250px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    background-color: var(--bg);
    color: var(--text);
    font-size: 14px;
}

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

ul, ol {
    list-style: none;
}

/* ---------------------------------- Sidebar ---------------------------------- */

.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background-color: var(--navy);
    display: flex;
    flex-direction: column;
    z-index: 10;
}

.sidebar-header {
    padding: 28px 24px 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.sidebar-header h1 {
    color: var(--white);
    font-size: 22px;
    font-weight: bold;
    letter-spacing: 0.5px;
}

.sidebar-header p {
    color: rgba(255, 255, 255, 0.65);
    font-size: 12px;
    margin-top: 4px;
}

.sidebar-nav {
    padding: 16px 0;
    display: flex;
    flex-direction: column;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 13px 24px;
    color: rgba(255, 255, 255, 0.8);
    font-size: 14px;
    border-left: 3px solid transparent;
    transition: background-color 0.15s ease;
}

.nav-link i {
    width: 18px;
    text-align: center;
}

.nav-link:hover {
    background-color: rgba(255, 255, 255, 0.06);
    color: var(--white);
}

.nav-link.active {
    background-color: rgba(255, 255, 255, 0.1);
    border-left-color: var(--accent);
    color: var(--white);
    font-weight: bold;
}

/* ---------------------------------- Main layout ---------------------------------- */

.main-content {
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.topbar {
    background-color: var(--white);
    border-bottom: 1px solid var(--border);
    padding: 18px 32px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.page-title {
    font-size: 19px;
    color: var(--navy);
    font-weight: bold;
}

.user-info {
    font-size: 13px;
    color: var(--text-muted);
}

.user-info i {
    color: var(--accent);
    margin-right: 4px;
}

.content-area {
    padding: 28px 32px;
    flex: 1;
}

/* ---------------------------------- Notifications ---------------------------------- */

.notification-container {
    position: fixed;
    top: 20px;
    right: 24px;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.notification {
    padding: 12px 18px;
    border-radius: 4px;
    font-size: 13px;
    color: var(--white);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    min-width: 220px;
    animation: fadeIn 0.2s ease;
}

.notification-success {
    background-color: var(--success);
}

.notification-error {
    background-color: var(--danger);
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-6px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ---------------------------------- Welcome / stats ---------------------------------- */

.welcome-message {
    color: var(--navy);
    font-size: 17px;
    margin-bottom: 20px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 18px;
    margin-bottom: 24px;
}

.stat-card {
    background-color: var(--white);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 6px;
    background-color: var(--navy);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    flex-shrink: 0;
}

.stat-info {
    display: flex;
    flex-direction: column;
}

.stat-value {
    font-size: 24px;
    font-weight: bold;
    color: var(--navy);
    line-height: 1.2;
}

.stat-label {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 2px;
}

/* ---------------------------------- Quick actions / buttons ---------------------------------- */

.quick-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 28px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 18px;
    border: none;
    border-radius: 4px;
    font-size: 13px;
    font-weight: bold;
    cursor: pointer;
    transition: opacity 0.15s ease, background-color 0.15s ease;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-primary {
    background-color: var(--navy);
    color: var(--white);
}

.btn-primary:hover:not(:disabled) {
    background-color: var(--navy-dark);
}

.btn-secondary {
    background-color: var(--white);
    color: var(--navy);
    border: 1px solid var(--navy);
}

.btn-secondary:hover:not(:disabled) {
    background-color: var(--bg);
}

.btn-success {
    background-color: var(--success);
    color: var(--white);
}

.btn-danger {
    background-color: var(--danger);
    color: var(--white);
}

.btn-warning {
    background-color: var(--warning);
    color: var(--white);
}

.btn-block {
    width: 100%;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
}

/* ---------------------------------- Panels / tables ---------------------------------- */

.panel {
    background-color: var(--white);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 22px;
    margin-bottom: 22px;
}

.panel-title {
    color: var(--navy);
    font-size: 15px;
    margin-bottom: 14px;
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 14px;
    font-size: 13px;
    color: var(--text-muted);
}

.table-responsive {
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table thead th {
    text-align: left;
    background-color: var(--navy);
    color: var(--white);
    padding: 10px 12px;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.4px;
    white-space: nowrap;
}

.data-table tbody td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--border);
    font-size: 13px;
    vertical-align: middle;
}

.data-table tbody tr:nth-child(even) {
    background-color: #fafafd;
}

.data-table tbody tr:hover {
    background-color: #eef1fb;
}

.text-center {
    text-align: center;
    color: var(--text-muted);
}

/* ---------------------------------- Badges ---------------------------------- */

.badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: bold;
    text-transform: capitalize;
}

.badge-green {
    background-color: var(--success-bg);
    color: var(--success);
}

.badge-yellow {
    background-color: var(--warning-bg);
    color: var(--warning);
}

.badge-red {
    background-color: var(--danger-bg);
    color: var(--danger);
}

/* ---------------------------------- Forms ---------------------------------- */

.page-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.search-input {
    flex: 1;
    max-width: 360px;
    padding: 10px 14px;
    border: 1px solid var(--border);
    border-radius: 4px;
    font-size: 13px;
}

.search-input:focus {
    outline: none;
    border-color: var(--accent);
}

.form-panel {
    max-width: 720px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
}

.form-group {
    margin-bottom: 16px;
    display: flex;
    flex-direction: column;
}

.form-group label {
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 6px;
    font-weight: bold;
}

.form-group input,
.form-group select {
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 4px;
    font-size: 13px;
    font-family: inherit;
    color: var(--text);
    background-color: var(--white);
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--accent);
}

.form-actions {
    display: flex;
    gap: 12px;
    margin-top: 8px;
}

.form-message {
    padding: 10px 14px;
    border-radius: 4px;
    font-size: 13px;
    margin-bottom: 16px;
}

.form-message.success {
    background-color: var(--success-bg);
    color: var(--success);
}

.form-message.error {
    background-color: var(--danger-bg);
    color: var(--danger);
}

.employee-select {
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 4px;
    font-size: 13px;
    min-width: 320px;
    max-width: 100%;
}

/* ---------------------------------- Background checks page ---------------------------------- */

.checks-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(420px, 1fr));
    gap: 20px;
}

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

.check-panel-header h3 {
    color: var(--navy);
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
}

/* ---------------------------------- Login page ---------------------------------- */

.login-body {
    background-color: var(--navy);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.login-wrapper {
    width: 100%;
    max-width: 400px;
}

.login-card {
    background-color: var(--white);
    border-radius: 8px;
    padding: 40px 36px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
    text-align: center;
}

.login-branding {
    margin-bottom: 18px;
}

.login-branding i {
    font-size: 30px;
    color: var(--navy);
}

.login-branding h2 {
    font-size: 15px;
    color: var(--navy);
    margin-top: 6px;
    font-weight: bold;
}

.login-title {
    font-size: 17px;
    color: var(--text);
    margin-bottom: 26px;
    font-weight: normal;
}

.login-card .form-group {
    text-align: left;
}

.login-hint {
    margin-top: 18px;
    font-size: 12px;
    color: var(--text-muted);
}

.error-message {
    background-color: var(--danger-bg);
    color: var(--danger);
    padding: 10px 12px;
    border-radius: 4px;
    font-size: 12px;
    margin-bottom: 14px;
    text-align: left;
}

/* ---------------------------------- Responsive ---------------------------------- */

@media (max-width: 900px) {
    .sidebar {
        width: 70px;
    }

    .sidebar-header p,
    .nav-link span {
        display: none;
    }

    .sidebar-header {
        padding: 24px 12px 16px;
        text-align: center;
    }

    .sidebar-header h1 {
        font-size: 12px;
    }

    .nav-link {
        justify-content: center;
        padding: 16px 0;
    }

    .main-content {
        margin-left: 70px;
    }
}

@media (max-width: 640px) {
    .form-row {
        grid-template-columns: 1fr;
    }

    .topbar {
        padding: 14px 18px;
    }

    .content-area {
        padding: 18px;
    }

    .page-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .search-input {
        max-width: none;
    }
}