/* ==========================================================================
   FMD SRAC — Dark Theme CSS
   ========================================================================== */

/* --- Reset & Base -------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --bg-base:     #0f172a;
    --bg-card:     #1e293b;
    --bg-hover:    #293548;
    --bg-input:    #0f172a;
    --border:      #334155;
    --border-focus:#3b82f6;
    --text-main:   #f1f5f9;
    --text-muted:  #94a3b8;
    --text-subtle: #64748b;
    --accent:      #3b82f6;
    --accent-dark: #2563eb;
    --success:     #22c55e;
    --warning:     #f59e0b;
    --danger:      #ef4444;
    --purple:      #a855f7;
    --sidebar-w:   260px;
    --topbar-h:    60px;
    --radius:      8px;
    --radius-sm:   4px;
    --shadow:      0 4px 6px -1px rgba(0,0,0,.4), 0 2px 4px -2px rgba(0,0,0,.4);
}

html { font-size: 16px; }
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background: var(--bg-base);
    color: var(--text-main);
    line-height: 1.5;
    min-height: 100vh;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; }

/* --- Auth Layout --------------------------------------------------------- */
.auth-body { display: flex; align-items: center; justify-content: center; min-height: 100vh; background: var(--bg-base); }
.auth-container { width: 100%; max-width: 420px; padding: 1rem; }
.auth-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 2.5rem 2rem; box-shadow: var(--shadow); }
.auth-logo { text-align: center; margin-bottom: 2rem; }
.auth-logo svg { color: var(--accent); margin-bottom: .5rem; }
.auth-logo h1 { font-size: 1.5rem; font-weight: 700; color: var(--text-main); }
.auth-logo p { color: var(--text-muted); font-size: .875rem; margin-top: .25rem; }

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

/* Sidebar */
.sidebar {
    width: var(--sidebar-w);
    background: var(--bg-card);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0; left: 0; bottom: 0;
    z-index: 100;
    overflow-y: auto;
    transition: transform .25s ease;
}
.sidebar-header {
    padding: 1.25rem 1rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: .75rem;
}
.sidebar-header .logo-icon { color: var(--accent); flex-shrink: 0; }
.sidebar-header .logo-text { font-weight: 700; font-size: 1rem; color: var(--text-main); }
.sidebar-header .logo-sub  { font-size: .7rem; color: var(--text-muted); }

.sidebar-nav { flex: 1; padding: 1rem 0; }
.nav-section-label {
    padding: .5rem 1rem .25rem;
    font-size: .7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .08em;
    color: var(--text-subtle);
}
.nav-link {
    display: flex;
    align-items: center;
    gap: .75rem;
    padding: .6rem 1rem;
    color: var(--text-muted);
    font-size: .875rem;
    border-radius: 0;
    transition: background .15s, color .15s;
    border-left: 3px solid transparent;
    text-decoration: none;
}
.nav-link:hover { background: var(--bg-hover); color: var(--text-main); text-decoration: none; }
.nav-link.nav-active { background: rgba(59,130,246,.1); color: var(--accent); border-left-color: var(--accent); font-weight: 500; }
.nav-link svg { flex-shrink: 0; opacity: .75; }
.nav-link.nav-active svg { opacity: 1; }

.sidebar-footer {
    padding: 1rem;
    border-top: 1px solid var(--border);
}
.user-info { display: flex; align-items: center; gap: .75rem; margin-bottom: .75rem; }
.user-avatar { width: 32px; height: 32px; background: var(--accent); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: 600; font-size: .875rem; flex-shrink: 0; }
.user-name { font-size: .875rem; font-weight: 500; }
.user-role { font-size: .75rem; color: var(--text-muted); }

/* Main content */
.main-content {
    margin-left: var(--sidebar-w);
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}
.topbar {
    height: var(--topbar-h);
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.5rem;
    position: sticky;
    top: 0;
    z-index: 50;
}
.topbar-title { font-size: 1rem; font-weight: 600; color: var(--text-main); }
.topbar-actions { display: flex; align-items: center; gap: .75rem; }

.page-content { padding: 1.5rem; flex: 1; }

/* Mobile sidebar toggle */
.sidebar-toggle { display: none; background: none; border: none; color: var(--text-main); cursor: pointer; padding: .25rem; }

/* --- Cards -------------------------------------------------------------- */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}
.card-header {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}
.card-title { font-size: 1rem; font-weight: 600; color: var(--text-main); }
.card-body { padding: 1.25rem; }
.card-footer { padding: .75rem 1.25rem; border-top: 1px solid var(--border); }

/* Stat cards */
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-bottom: 1.5rem; }
.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.25rem;
}
.stat-label { font-size: .8rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: .05em; }
.stat-value { font-size: 2rem; font-weight: 700; margin: .25rem 0; }
.stat-sub   { font-size: .8rem; color: var(--text-muted); }
.stat-icon  { float: right; color: var(--accent); opacity: .7; }

/* --- Tables ------------------------------------------------------------- */
.table-wrapper { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: .875rem; }
thead tr { border-bottom: 1px solid var(--border); }
th { padding: .75rem 1rem; text-align: left; font-weight: 600; color: var(--text-muted); font-size: .75rem; text-transform: uppercase; letter-spacing: .05em; white-space: nowrap; }
tbody tr { border-bottom: 1px solid rgba(51,65,85,.5); transition: background .1s; }
tbody tr:hover { background: var(--bg-hover); }
tbody tr:last-child { border-bottom: none; }
td { padding: .75rem 1rem; color: var(--text-main); vertical-align: middle; }
.table-actions { display: flex; gap: .5rem; align-items: center; }

/* Empty state */
.empty-state { text-align: center; padding: 3rem 1rem; color: var(--text-muted); }
.empty-state svg { opacity: .3; margin-bottom: 1rem; }
.empty-state h3 { margin-bottom: .5rem; color: var(--text-main); }

/* --- Badges ------------------------------------------------------------- */
.badge {
    display: inline-flex;
    align-items: center;
    padding: .2em .65em;
    font-size: .72rem;
    font-weight: 600;
    border-radius: 9999px;
    white-space: nowrap;
}
.badge-blue   { background: rgba(59,130,246,.15); color: #60a5fa; border: 1px solid rgba(59,130,246,.3); }
.badge-green  { background: rgba(34,197,94,.15);  color: #4ade80; border: 1px solid rgba(34,197,94,.3); }
.badge-yellow { background: rgba(245,158,11,.15); color: #fbbf24; border: 1px solid rgba(245,158,11,.3); }
.badge-red    { background: rgba(239,68,68,.15);  color: #f87171; border: 1px solid rgba(239,68,68,.3); }
.badge-gray   { background: rgba(148,163,184,.1); color: #94a3b8; border: 1px solid rgba(148,163,184,.2); }
.badge-purple { background: rgba(168,85,247,.15); color: #c084fc; border: 1px solid rgba(168,85,247,.3); }

/* --- Buttons ------------------------------------------------------------ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: .4rem;
    padding: .5rem 1rem;
    border-radius: var(--radius-sm);
    font-size: .875rem;
    font-weight: 500;
    cursor: pointer;
    border: 1px solid transparent;
    transition: background .15s, border-color .15s, opacity .15s;
    text-decoration: none;
    white-space: nowrap;
}
.btn:hover { text-decoration: none; }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn-sm { padding: .3rem .7rem; font-size: .8rem; }
.btn-full { width: 100%; justify-content: center; }
.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: var(--bg-hover); color: var(--text-main); border-color: var(--border); }
.btn-secondary:hover { background: #3c4a5e; }
.btn-danger { background: rgba(239,68,68,.15); color: #f87171; border-color: rgba(239,68,68,.3); }
.btn-danger:hover { background: rgba(239,68,68,.25); }
.btn-success { background: rgba(34,197,94,.15); color: #4ade80; border-color: rgba(34,197,94,.3); }
.btn-ghost { background: transparent; color: var(--text-muted); border-color: transparent; }
.btn-ghost:hover { background: var(--bg-hover); color: var(--text-main); }
.btn-icon { padding: .4rem; }

/* --- Forms -------------------------------------------------------------- */
.form-group { margin-bottom: 1.25rem; }
.form-label { display: block; font-size: .875rem; font-weight: 500; color: var(--text-main); margin-bottom: .4rem; }
.form-label .required { color: var(--danger); margin-left: .2rem; }
.form-input, .form-select, .form-textarea {
    width: 100%;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-main);
    padding: .5rem .75rem;
    font-size: .875rem;
    transition: border-color .15s;
    outline: none;
}
.form-input:focus, .form-select:focus, .form-textarea:focus { border-color: var(--border-focus); }
.form-textarea { min-height: 100px; resize: vertical; }
.form-select option { background: var(--bg-card); }
.form-hint { font-size: .75rem; color: var(--text-muted); margin-top: .25rem; }
.form-error { font-size: .75rem; color: var(--danger); margin-top: .25rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-row-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 1rem; }
.form-actions { display: flex; gap: .75rem; margin-top: 1.5rem; }

/* --- Alerts ------------------------------------------------------------- */
.alert { padding: .75rem 1rem; border-radius: var(--radius-sm); margin-bottom: 1rem; font-size: .875rem; border: 1px solid; }
.alert-success { background: rgba(34,197,94,.1); color: #4ade80; border-color: rgba(34,197,94,.3); }
.alert-danger  { background: rgba(239,68,68,.1); color: #f87171; border-color: rgba(239,68,68,.3); }
.alert-warning { background: rgba(245,158,11,.1); color: #fbbf24; border-color: rgba(245,158,11,.3); }
.alert-info    { background: rgba(59,130,246,.1); color: #60a5fa; border-color: rgba(59,130,246,.3); }
.flash-container { margin-bottom: 1.25rem; }

/* --- Page Header -------------------------------------------------------- */
.page-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 1rem; margin-bottom: 1.5rem; flex-wrap: wrap; }
.page-header-left h1 { font-size: 1.5rem; font-weight: 700; color: var(--text-main); }
.page-header-left p { color: var(--text-muted); font-size: .875rem; margin-top: .25rem; }
.page-header-actions { display: flex; gap: .75rem; flex-wrap: wrap; }

/* --- Filter Bar --------------------------------------------------------- */
.filter-bar { display: flex; gap: .75rem; flex-wrap: wrap; margin-bottom: 1.25rem; align-items: flex-end; }
.filter-bar .form-group { margin-bottom: 0; }
.filter-bar .form-input,
.filter-bar .form-select { min-width: 160px; }

/* --- Tabs --------------------------------------------------------------- */
.tabs { display: flex; gap: 0; border-bottom: 1px solid var(--border); margin-bottom: 1.5rem; }
.tab-btn {
    padding: .6rem 1.25rem;
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--text-muted);
    font-size: .875rem;
    cursor: pointer;
    margin-bottom: -1px;
    transition: color .15s, border-color .15s;
    white-space: nowrap;
}
.tab-btn:hover { color: var(--text-main); }
.tab-btn.active { color: var(--accent); border-bottom-color: var(--accent); font-weight: 500; }

/* --- Detail view -------------------------------------------------------- */
.detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
.detail-item label { display: block; font-size: .75rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: .05em; margin-bottom: .2rem; }
.detail-item span  { color: var(--text-main); font-size: .9rem; }

/* --- Pagination --------------------------------------------------------- */
.pagination { display: flex; gap: .5rem; align-items: center; justify-content: center; margin-top: 1.25rem; }
.pagination a, .pagination span {
    display: inline-flex; align-items: center; justify-content: center;
    width: 32px; height: 32px;
    border-radius: var(--radius-sm);
    font-size: .8rem;
    border: 1px solid var(--border);
    color: var(--text-muted);
    background: var(--bg-card);
    text-decoration: none;
    transition: background .15s;
}
.pagination a:hover { background: var(--bg-hover); color: var(--text-main); }
.pagination .active { background: var(--accent); color: #fff; border-color: var(--accent); }

/* --- Modal -------------------------------------------------------------- */
.modal-overlay {
    display: none;
    position: fixed; inset: 0;
    background: rgba(0,0,0,.65);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}
.modal-overlay.open { display: flex; }
.modal {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    max-width: 420px;
    width: 100%;
    box-shadow: 0 25px 50px rgba(0,0,0,.6);
}
.modal h3 { margin-bottom: .75rem; font-size: 1rem; }
.modal p  { color: var(--text-muted); font-size: .875rem; margin-bottom: 1.25rem; }
.modal-actions { display: flex; gap: .75rem; justify-content: flex-end; }

/* --- Progress bar ------------------------------------------------------- */
.progress { height: 6px; background: var(--border); border-radius: 9999px; overflow: hidden; margin-top: .5rem; }
.progress-bar { height: 100%; background: var(--accent); border-radius: 9999px; transition: width .3s; }
.progress-bar.green  { background: var(--success); }
.progress-bar.yellow { background: var(--warning); }
.progress-bar.red    { background: var(--danger); }

/* --- Utility ------------------------------------------------------------ */
.text-muted   { color: var(--text-muted); }
.text-success { color: var(--success); }
.text-danger  { color: var(--danger); }
.text-warning { color: var(--warning); }
.text-accent  { color: var(--accent); }
.text-sm      { font-size: .875rem; }
.text-xs      { font-size: .75rem; }
.fw-600       { font-weight: 600; }
.mt-1 { margin-top: .25rem; }
.mt-2 { margin-top: .5rem; }
.mt-3 { margin-top: .75rem; }
.mt-4 { margin-top: 1rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-6 { margin-bottom: 1.5rem; }
.gap-2 { gap: .5rem; }
.flex { display: flex; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.w-full { width: 100%; }

/* --- Responsive --------------------------------------------------------- */
@media (max-width: 768px) {
    .sidebar { transform: translateX(-100%); }
    .sidebar.open { transform: translateX(0); }
    .main-content { margin-left: 0; }
    .sidebar-toggle { display: flex; }
    .form-row, .form-row-3 { grid-template-columns: 1fr; }
    .detail-grid { grid-template-columns: 1fr; }
    .stat-grid { grid-template-columns: 1fr 1fr; }
    .page-header { flex-direction: column; }
    .filter-bar .form-input,
    .filter-bar .form-select { min-width: 120px; }
}
@media (max-width: 480px) {
    .stat-grid { grid-template-columns: 1fr; }
    .page-content { padding: 1rem; }
    .card-body { padding: 1rem; }
}

/* Sidebar overlay for mobile */
.sidebar-backdrop {
    display: none;
    position: fixed; inset: 0;
    background: rgba(0,0,0,.5);
    z-index: 99;
}
.sidebar-backdrop.open { display: block; }