/* ERS — Engineering Recruiting Support | Main Stylesheet v4 */

:root {
    --primary:     #16a34a;
    --primary-dk:  #15803d;
    --primary-lt:  #f0fdf4;
    --accent:      #22c55e;
    --success:     #16a34a;
    --warning:     #d97706;
    --danger:      #dc2626;
    --sidebar-bg:  #ffffff;
    --sidebar-border: #e5e7eb;
    --gray-50:     #f9fafb;
    --gray-100:    #f3f4f6;
    --gray-200:    #e5e7eb;
    --gray-300:    #d1d5db;
    --gray-400:    #9ca3af;
    --gray-500:    #6b7280;
    --gray-600:    #4b5563;
    --gray-700:    #374151;
    --gray-800:    #1f2937;
    --white:       #ffffff;
    --sidebar-w:   240px;
    --radius:      8px;
    --shadow:      0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.05);
    --shadow-md:   0 4px 6px rgba(0,0,0,.07);
}

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

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    font-size: 14px;
    color: var(--gray-800);
    background: var(--gray-50);
    line-height: 1.6;
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── Layout ─────────────────────────────────────────────────── */
.layout { display: flex; min-height: 100vh; }

.sidebar {
    width: var(--sidebar-w);
    background: var(--sidebar-bg);
    border-right: 1px solid var(--sidebar-border);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0; left: 0;
    height: 100vh;
    overflow-y: auto;
    z-index: 100;
}

.sidebar-brand {
    padding: 18px 16px 16px;
    border-bottom: 1px solid var(--gray-100);
    display: flex;
    align-items: center;
    gap: 10px;
}
.sidebar-brand-icon {
    width: 34px; height: 34px;
    background: var(--primary);
    border-radius: 8px;
    display: flex; align-items: center; justify-content: center;
    font-size: 16px; flex-shrink: 0;
}
.sidebar-brand h1 { font-size: 15px; font-weight: 700; color: var(--gray-800); line-height: 1.2; }
.sidebar-brand p  { font-size: 10px; color: var(--gray-400); margin-top: 1px; }

.sidebar-nav { padding: 10px 0; flex: 1; }

.nav-section {
    font-size: 10px;
    font-weight: 600;
    color: var(--gray-400);
    text-transform: uppercase;
    letter-spacing: .08em;
    padding: 14px 16px 4px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 9px;
    padding: 8px 16px;
    color: var(--gray-600);
    font-size: 13.5px;
    cursor: pointer;
    transition: background .12s, color .12s;
    border-radius: 0;
    margin: 1px 8px;
    border-radius: 6px;
}
.nav-item:hover { background: var(--gray-100); color: var(--gray-800); text-decoration: none; }
.nav-item.active {
    background: var(--primary-lt);
    color: var(--primary-dk);
    font-weight: 600;
}
.nav-item.active .icon { color: var(--primary); }
.nav-item .icon { width: 18px; text-align: center; font-size: 14px; }

.sidebar-user {
    padding: 12px 16px;
    border-top: 1px solid var(--gray-100);
    font-size: 12px;
    color: var(--gray-500);
    display: flex;
    align-items: center;
    gap: 10px;
}
.sidebar-user-avatar {
    width: 30px; height: 30px;
    background: var(--primary-lt);
    border: 1px solid var(--gray-200);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 12px; font-weight: 700;
    color: var(--primary-dk);
    flex-shrink: 0;
}
.sidebar-user-info strong { display: block; color: var(--gray-800); font-size: 12.5px; font-weight: 600; }
.sidebar-user .role-badge {
    display: inline-block;
    margin-top: 2px;
    padding: 1px 7px;
    border-radius: 20px;
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
}
.role-admin  { background: #fef3c7; color: #92400e; }
.role-senior { background: #d1fae5; color: #065f46; }
.role-member { background: #e0f2fe; color: #075985; }

.sidebar-logout {
    display: block;
    padding: 8px 16px;
    margin: 0 8px 8px;
    border-radius: 6px;
    font-size: 12.5px;
    color: var(--gray-500);
    transition: background .12s, color .12s;
}
.sidebar-logout:hover { background: #fef2f2; color: #dc2626; text-decoration: none; }

.main {
    margin-left: var(--sidebar-w);
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.topbar {
    background: var(--white);
    border-bottom: 1px solid var(--gray-200);
    padding: 0 24px;
    height: 54px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 50;
    box-shadow: 0 1px 2px rgba(0,0,0,.04);
}
.topbar-title { font-size: 15px; font-weight: 600; color: var(--gray-800); }
.topbar-right { display: flex; align-items: center; gap: 12px; }

.content { padding: 24px; flex: 1; }

/* ── Cards ──────────────────────────────────────────────────── */
.card {
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border: 1px solid var(--gray-200);
}
.card-header {
    padding: 14px 20px;
    border-bottom: 1px solid var(--gray-100);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}
.card-header h2 { font-size: 14px; font-weight: 600; color: var(--gray-800); }
.card-body { padding: 20px; }

/* ── Stat tiles ─────────────────────────────────────────────── */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 14px;
    margin-bottom: 22px;
}
.stat-card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    padding: 16px 20px;
    box-shadow: var(--shadow);
}
.stat-card .label {
    font-size: 11px;
    color: var(--gray-500);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .05em;
}
.stat-card .value {
    font-size: 26px;
    font-weight: 700;
    color: var(--gray-800);
    margin-top: 4px;
    line-height: 1;
}
.stat-card .sub { font-size: 11.5px; color: var(--gray-400); margin-top: 4px; }
.stat-card .value-green { color: var(--primary); }

/* ── Buttons ────────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 7px 14px;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 500;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all .15s;
    white-space: nowrap;
    line-height: 1.4;
}
.btn:hover { opacity: .9; transform: translateY(-1px); box-shadow: var(--shadow); }
.btn-primary  { background: var(--primary); color: #fff; border-color: var(--primary-dk); }
.btn-success  { background: var(--success); color: #fff; border-color: #15803d; }
.btn-warning  { background: #f59e0b; color: #fff; border-color: #d97706; }
.btn-danger   { background: var(--danger); color: #fff; border-color: #b91c1c; }
.btn-outline  { background: var(--white); color: var(--gray-700); border-color: var(--gray-300); }
.btn-outline:hover { background: var(--gray-50); color: var(--gray-800); }
.btn-sm { padding: 5px 10px; font-size: 12px; }
.btn-xs { padding: 3px 8px; font-size: 11px; }

/* ── Forms ──────────────────────────────────────────────────── */
.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 16px;
}
.form-group { display: flex; flex-direction: column; gap: 5px; }
.form-group label {
    font-size: 12px;
    font-weight: 600;
    color: var(--gray-600);
    letter-spacing: .02em;
}
.form-group input,
.form-group select,
.form-group textarea {
    padding: 8px 11px;
    border: 1px solid var(--gray-300);
    border-radius: 6px;
    font-size: 13.5px;
    color: var(--gray-800);
    background: var(--white);
    transition: border-color .15s, box-shadow .15s;
    width: 100%;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(22,163,74,.12);
}
.form-group input::placeholder { color: var(--gray-400); }
.form-group textarea { resize: vertical; min-height: 80px; }
.form-full { grid-column: 1 / -1; }

/* ── Alerts / flags ─────────────────────────────────────────── */
.alert {
    padding: 11px 15px;
    border-radius: 7px;
    font-size: 13.5px;
    margin-bottom: 16px;
    display: flex;
    align-items: flex-start;
    gap: 10px;
    line-height: 1.5;
}
.alert-danger  { background: #fef2f2; border: 1px solid #fecaca; color: #991b1b; }
.alert-warning { background: #fffbeb; border: 1px solid #fde68a; color: #92400e; }
.alert-success { background: #f0fdf4; border: 1px solid #bbf7d0; color: #166534; }
.alert-info    { background: #eff6ff; border: 1px solid #bfdbfe; color: #1e40af; }

.flag-box {
    background: #fffbeb;
    border: 1px solid #fde68a;
    border-left: 4px solid #f59e0b;
    border-radius: 7px;
    padding: 14px 16px;
    margin-bottom: 16px;
}
.flag-box h4 { color: #92400e; font-size: 13px; font-weight: 600; margin-bottom: 8px; }
.flag-item   { font-size: 13px; color: #78350f; padding: 3px 0; }
.flag-item::before { content: "⚠️  "; }

/* ── Table ──────────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
thead th {
    background: var(--gray-50);
    padding: 10px 12px;
    text-align: left;
    font-size: 11px;
    font-weight: 700;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: .06em;
    border-bottom: 1px solid var(--gray-200);
    white-space: nowrap;
}
tbody td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--gray-100);
    vertical-align: middle;
    max-width: 220px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    color: var(--gray-700);
}
tbody tr:hover { background: #f9fffe; }
tbody tr:last-child td { border-bottom: none; }

/* ── Badges ─────────────────────────────────────────────────── */
.badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 600;
}
.badge-blue   { background: #dbeafe; color: #1e40af; }
.badge-green  { background: #dcfce7; color: #15803d; }
.badge-yellow { background: #fef9c3; color: #854d0e; }
.badge-red    { background: #fee2e2; color: #991b1b; }
.badge-gray   { background: #f3f4f6; color: #4b5563; }

/* ── Search bar ─────────────────────────────────────────────── */
.search-bar {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    padding: 14px 20px;
    border-bottom: 1px solid var(--gray-100);
}
.search-bar input, .search-bar select {
    padding: 7px 11px;
    border: 1px solid var(--gray-300);
    border-radius: 6px;
    font-size: 13px;
    color: var(--gray-800);
    background: var(--white);
}
.search-bar input:focus, .search-bar select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(22,163,74,.1);
}

/* ── Login page ─────────────────────────────────────────────── */
.login-wrap {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gray-50);
}
.login-card {
    background: var(--white);
    border-radius: 12px;
    padding: 40px 36px;
    width: 100%;
    max-width: 400px;
    box-shadow: 0 4px 24px rgba(0,0,0,.09);
    border: 1px solid var(--gray-200);
}
.login-logo { text-align: center; margin-bottom: 28px; }
.login-logo-icon {
    width: 52px; height: 52px;
    background: var(--primary);
    border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    font-size: 24px;
    margin: 0 auto 12px;
}
.login-logo h1 { font-size: 22px; font-weight: 700; color: var(--gray-800); letter-spacing: -.3px; }
.login-logo p  { font-size: 12.5px; color: var(--gray-400); margin-top: 4px; }

/* ── Pagination ─────────────────────────────────────────────── */
.pagination { display: flex; gap: 4px; align-items: center; margin-top: 16px; }
.page-btn {
    padding: 5px 11px;
    border: 1px solid var(--gray-200);
    border-radius: 5px;
    font-size: 13px;
    cursor: pointer;
    background: var(--white);
    color: var(--gray-700);
    transition: background .12s;
}
.page-btn:hover  { background: var(--gray-100); }
.page-btn.active { background: var(--primary); color: #fff; border-color: var(--primary); }
.page-btn:disabled { opacity: .45; cursor: default; }

/* ── Utility ────────────────────────────────────────────────── */
.flex        { display: flex; }
.flex-center { display: flex; align-items: center; }
.gap-8       { gap: 8px; }
.gap-12      { gap: 12px; }
.mt-16       { margin-top: 16px; }
.mt-24       { margin-top: 24px; }
.text-muted  { color: var(--gray-400); }
.text-sm     { font-size: 12px; }
.text-right  { text-align: right; }
.w-full      { width: 100%; }

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 768px) {
    .sidebar { transform: translateX(-100%); transition: transform .2s; }
    .sidebar.open { transform: translateX(0); }
    .main { margin-left: 0; }
    .form-grid { grid-template-columns: 1fr; }
}