/* =============================================
   PlagSini — Production Design System v5
   Fluid Responsive · Auto-Scale · All Screens
   ============================================= */

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

:root {
    --bg-base: #0b0e14;
    --bg-surface: #111620;
    --bg-card: #151b28;
    --bg-elevated: #1a2233;
    --border: #1e2a3a;
    --border-hover: #2a3a50;
    --text-primary: #e4e8ef;
    --text-secondary: #8892a4;
    --text-muted: #5a6478;
    --accent: #00e676;
    --accent-dim: rgba(0,230,118,0.12);
    --accent-hover: #00ff88;
    --blue: #42a5f5;
    --orange: #ffa726;
    --red: #ef5350;
    --purple: #ab47bc;
    --cyan: #26c6da;
    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 8px;
    --shadow-sm: 0 1px 2px rgba(0,0,0,.3);
    --shadow-md: 0 2px 8px rgba(0,0,0,.35);
    --transition: .2s ease;

    /* Fluid scale factor — scales padding/gaps/fonts relative to viewport */
    --fluid-xs: clamp(2px, 0.2vw, 3px);
    --fluid-sm: clamp(3px, 0.3vw, 5px);
    --fluid-md: clamp(5px, 0.45vw, 8px);
    --fluid-lg: clamp(6px, 0.55vw, 12px);
    --fluid-xl: clamp(8px, 0.7vw, 14px);

    /* Container max width — prevents stretching on big monitors */
    --container-max: 1320px;
}

body {
    font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--bg-base);
    min-height: 100vh;
    color: var(--text-primary);
    font-size: clamp(11px, 0.72vw, 13px);
    line-height: 1.45;
    -webkit-font-smoothing: antialiased;
}

/* ============= SIDEBAR ============= */
.sidebar {
    position: fixed; top:0; left:-220px; width:220px; height:100vh;
    background: var(--bg-surface);
    border-right: 1px solid var(--border);
    z-index: 2000;
    transition: left .25s cubic-bezier(.4,0,.2,1);
    display: flex; flex-direction: column;
}
.sidebar.active { left:0; }

.sidebar-header {
    padding: 10px 12px;
    border-bottom: 1px solid var(--border);
    display: flex; align-items: center; gap: 8px;
}
.sidebar-logo {
    width: 28px; height: 28px; border-radius: var(--radius-sm);
    display: flex; align-items: center; justify-content: center;
    background: var(--accent-dim); font-size: 14px; flex-shrink:0;
}
.sidebar-logo img { width:100%; height:100%; object-fit:contain; border-radius: var(--radius-sm); }
.sidebar-title { color: #fff; font-size: 13px; font-weight: 700; letter-spacing: .2px; }
.sidebar-subtitle { color: var(--text-muted); font-size: 9px; text-transform: uppercase; letter-spacing: .8px; }

.sidebar-nav { flex:1; padding: 6px 0; overflow-y: auto; }
.sidebar-nav::-webkit-scrollbar { width:3px; }
.sidebar-nav::-webkit-scrollbar-thumb { background: var(--border); border-radius:2px; }

.nav-section { padding: 0 6px; margin-bottom: 10px; }
.nav-section-title {
    color: var(--text-muted); font-size: 9px; text-transform: uppercase;
    letter-spacing: 1px; padding: 0 8px; margin-bottom: 3px; font-weight: 600;
}
.nav-item {
    display: flex; align-items: center; gap: 8px;
    padding: 5px 10px; color: var(--text-secondary);
    text-decoration: none; border-radius: var(--radius-sm);
    margin-bottom: 1px; transition: all var(--transition); cursor: pointer;
    font-size: 11px; font-weight: 500;
}
.nav-item:hover { background: var(--accent-dim); color: var(--accent); }
.nav-item.active {
    background: var(--accent-dim); color: var(--accent);
    border-left: 2px solid var(--accent); font-weight: 600;
}
.nav-item-icon { font-size: 13px; width: 18px; text-align: center; }
.nav-item-text { font-size: 11px; }

.sidebar-footer { padding: 8px; border-top: 1px solid var(--border); }

/* Overlay */
.sidebar-overlay {
    position: fixed; inset:0; background: rgba(0,0,0,.55);
    z-index: 1999; opacity:0; visibility:hidden; transition: all .25s;
    backdrop-filter: blur(2px);
}
.sidebar-overlay.active { opacity:1; visibility:visible; }

/* ============= MAIN CONTENT ============= */
.main-content { min-height:100vh; }

/* Top Header */
.top-header {
    background: rgba(11,14,20,.92); backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    padding: var(--fluid-sm) var(--fluid-lg);
    display: flex; align-items: center; justify-content: space-between;
    position: sticky; top:0; z-index:100;
}
.header-left { display: flex; align-items: center; gap: var(--fluid-md); }
.header-right { display: flex; align-items: center; gap: var(--fluid-sm); }

.hamburger {
    width: 30px; height: 30px;
    background: var(--accent-dim); border: 1px solid var(--border);
    border-radius: var(--radius-sm); cursor: pointer;
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    gap: 3px; transition: all var(--transition);
}
.hamburger:hover { background: rgba(0,230,118,.18); border-color: var(--accent); }
.hamburger span { display:block; width:14px; height:1.5px; background: var(--accent); border-radius:1px; transition: all .3s; }
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(3px,3px); }
.hamburger.active span:nth-child(2) { opacity:0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(3px,-3px); }

.page-title {
    color: var(--accent); font-size: clamp(10px, 0.7vw, 13px); font-weight: 700;
    display: flex; align-items: center; gap: 5px; letter-spacing: .2px;
}

.header-info { display: flex; align-items: center; gap: 6px; color: var(--text-muted); font-size: clamp(9px, 0.6vw, 11px); }
.header-info strong { color: var(--text-primary); font-weight: 600; }
.header-user { color: var(--text-secondary); font-size: clamp(9px, 0.6vw, 11px); }
.header-user strong { color: var(--text-primary); }

/* ============= CONTAINERS ============= */
.dashboard-container { max-width: var(--container-max); margin:0 auto; padding: var(--fluid-md) var(--fluid-lg); width: 100%; }
.admin-container     { max-width: var(--container-max); margin:0 auto; padding: var(--fluid-md) var(--fluid-lg); width: 100%; }

/* ============= CARDS ============= */
.card {
    background: var(--bg-card); border-radius: var(--radius-md);
    border: 1px solid var(--border); margin-bottom: var(--fluid-sm);
    transition: border-color var(--transition);
}
.card:hover { border-color: var(--border-hover); }
.card-header {
    padding: var(--fluid-xs) var(--fluid-sm); border-bottom: 1px solid var(--border);
    display: flex; justify-content: space-between; align-items: center;
}
.card-title {
    color: var(--accent); font-size: clamp(9px, 0.65vw, 11px); font-weight: 700;
    display: flex; align-items: center; gap: 5px;
}
.card-body { padding: var(--fluid-xs) var(--fluid-sm); }

/* ============= GRID LAYOUTS ============= */
.grid-2 { display:grid; grid-template-columns:repeat(2,1fr); gap: var(--fluid-md); }
.grid-3 { display:grid; grid-template-columns:repeat(3,1fr); gap: var(--fluid-md); }
.grid-4 { display:grid; grid-template-columns:repeat(4,1fr); gap: var(--fluid-md); }
/* grid responsive handled in responsive section below */

/* ============= STAT CARDS ============= */
.stats-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(clamp(90px, 8vw, 130px),1fr));
    gap: var(--fluid-sm); margin-bottom: var(--fluid-md);
}
.stat-card {
    background: var(--bg-card); border-radius: var(--radius-md);
    border: 1px solid var(--border); padding: var(--fluid-xs) var(--fluid-sm);
    text-align: center; transition: all var(--transition);
}
.stat-card:hover { border-color: var(--accent); transform: translateY(-1px); box-shadow: var(--shadow-md); }
.stat-icon { font-size: clamp(12px, 0.9vw, 16px); margin-bottom: 2px; }
.stat-value { font-size: clamp(12px, 0.85vw, 15px); font-weight: 800; color: var(--accent); margin-bottom: 1px; line-height: 1.2; }
.stat-label { color: var(--text-muted); font-size: clamp(7px, 0.5vw, 9px); text-transform: uppercase; letter-spacing: .6px; font-weight: 600; }
.stat-sub { color: var(--text-muted); font-size: clamp(7px, 0.5vw, 9px); margin-top: 1px; }

/* ============= BADGES ============= */
.badge {
    display: inline-block; padding: 2px 6px; border-radius: 3px;
    font-size: 9px; font-weight: 700; text-transform: uppercase; letter-spacing: .3px;
    line-height: 1.4;
}
.badge-success, .badge-online, .badge-charging, .badge-available { background: rgba(0,230,118,.12); color: var(--accent); }
.badge-danger, .badge-offline, .badge-faulted { background: rgba(239,83,80,.12); color: var(--red); }
.badge-warning, .badge-preparing { background: rgba(255,167,38,.12); color: var(--orange); }
.badge-info { background: rgba(66,165,245,.12); color: var(--blue); }
.badge-unavailable, .badge-unknown { background: rgba(90,100,120,.15); color: var(--text-muted); }

/* ============= BUTTONS ============= */
.btn {
    padding: 5px 10px; border:none; border-radius: var(--radius-sm);
    cursor:pointer; font-weight:600; font-size:10px;
    transition: all var(--transition); display:inline-flex;
    align-items:center; gap:4px; text-decoration:none; line-height:1.4;
}
.btn-primary { background: var(--accent); color:#000; }
.btn-primary:hover { background: var(--accent-hover); box-shadow: 0 2px 10px rgba(0,230,118,.25); transform:translateY(-1px); }
.btn-secondary { background: var(--bg-elevated); color: var(--text-primary); border: 1px solid var(--border); }
.btn-secondary:hover { border-color: var(--accent); color: var(--accent); }
.btn-success { background: var(--accent); color:#000; }
.btn-success:hover { box-shadow: 0 2px 10px rgba(0,230,118,.25); }
.btn-danger { background: var(--red); color:#fff; }
.btn-danger:hover { background: #f44336; }
.btn-small { padding: 4px 8px; font-size: 10px; }
.btn-xs { padding: 2px 6px; font-size: 9px; border-radius: 3px; }

/* ============= TABLES ============= */
.table-container {
    background: var(--bg-card); border-radius: var(--radius-lg);
    border: 1px solid var(--border); overflow: hidden; margin-bottom: var(--fluid-md);
    padding: var(--fluid-sm); overflow-x: auto;
}
.user-table, .config-table { width:100%; border-collapse:collapse; }
.user-table th, .config-table th {
    background: var(--bg-elevated); color: var(--text-muted);
    font-size: clamp(8px, 0.55vw, 10px); font-weight: 700; text-transform: uppercase; letter-spacing: .7px;
    padding: var(--fluid-xs) var(--fluid-sm); text-align: left; border-bottom: 1px solid var(--border);
    position: sticky; top: 0; white-space: nowrap;
}
.user-table td, .config-table td {
    padding: var(--fluid-xs) var(--fluid-sm); border-bottom: 1px solid rgba(30,42,58,.5);
    font-size: clamp(10px, 0.7vw, 12px); color: var(--text-secondary);
}
.user-table tr:hover, .config-table tr:hover { background: rgba(0,230,118,.03); }
.user-table tr:last-child td { border-bottom:none; }
.user-name { font-weight:600; color: var(--text-primary); font-size:11px; }
.user-email { color: var(--text-muted); font-size:10px; }

.loading-spinner { text-align:center; color: var(--text-muted); padding:14px; font-size:11px; }
.empty-state { text-align:center; padding:20px; color: var(--text-muted); }
.empty-state-icon { font-size:22px; margin-bottom:6px; }

/* ============= CONTROLS / SEARCH ============= */
.user-controls {
    display: flex; justify-content: space-between; align-items: center;
    margin-bottom: 8px; gap: 8px; flex-wrap: wrap;
}
.search-box { display:flex; gap:6px; align-items:center; flex-wrap:wrap; flex:1; }
.search-box input[type="text"], .search-box input[type="search"] {
    padding: 5px 10px; border: 1px solid var(--border); border-radius: var(--radius-sm);
    background: var(--bg-base); color: var(--text-primary); font-size:11px;
    transition: border-color var(--transition); min-width: 180px; flex:1; max-width: 280px;
}
.search-box input:focus { outline:none; border-color: var(--accent); }
.search-box select, .filter-select {
    padding: 5px 8px; border: 1px solid var(--border); border-radius: var(--radius-sm);
    background: var(--bg-base); color: var(--text-primary); font-size:11px;
    cursor:pointer;
}
.search-box select:focus { outline:none; border-color: var(--accent); }

.controls { display:flex; gap:8px; align-items:center; flex-wrap:wrap; }
.controls select, .controls input[type="text"] {
    padding: 5px 10px; border: 1px solid var(--border); border-radius: var(--radius-sm);
    background: var(--bg-base); color: var(--text-primary); font-size:11px; min-width:160px;
}
.controls select:focus, .controls input:focus { outline:none; border-color: var(--accent); }
.controls label { display:flex; align-items:center; gap:4px; color: var(--text-muted); font-size:11px; cursor:pointer; }
.controls input[type="checkbox"] { width:12px; height:12px; accent-color: var(--accent); }

/* ============= MODALS ============= */
.modal {
    position:fixed; inset:0; background:rgba(0,0,0,.6);
    backdrop-filter: blur(4px); z-index:3000;
    display:none; align-items:center; justify-content:center;
    padding: 12px;
}
.modal.active { display:flex; }
.modal-content {
    background: var(--bg-surface); border:1px solid var(--border);
    border-radius: var(--radius-lg); width:100%; max-width:420px;
    box-shadow: 0 12px 36px rgba(0,0,0,.5); max-height:90vh; overflow-y:auto;
}
.modal-header {
    display:flex; justify-content:space-between; align-items:center;
    padding: 10px 14px; border-bottom:1px solid var(--border);
}
.modal-header h3 { font-size:12px; font-weight:700; color:var(--text-primary); }
.modal-close {
    width:24px; height:24px; border-radius:var(--radius-sm);
    background:var(--bg-elevated); border:1px solid var(--border);
    color:var(--text-muted); cursor:pointer; font-size:14px;
    display:flex; align-items:center; justify-content:center;
    transition: all var(--transition);
}
.modal-close:hover { background:rgba(239,83,80,.15); color:var(--red); border-color:var(--red); }
.modal-actions { display:flex; gap:6px; justify-content:flex-end; padding:10px 14px; border-top:1px solid var(--border); }

/* Forms */
.form-group { padding: 0 14px; margin-bottom:8px; }
.form-group label { display:block; font-size:9px; font-weight:600; color:var(--text-muted); text-transform:uppercase; letter-spacing:.5px; margin-bottom:3px; }
.form-group input, .form-group select, .form-group textarea {
    width:100%; padding:6px 10px; border:1px solid var(--border); border-radius:var(--radius-sm);
    background:var(--bg-base); color:var(--text-primary); font-size:11px;
    transition: border-color var(--transition);
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { outline:none; border-color:var(--accent); }
.form-row { display:flex; gap:8px; padding: 0 14px; margin-bottom:8px; }
.form-row .form-group { padding:0; flex:1; margin-bottom:0; }
.checkbox-group { display:flex; align-items:center; gap:6px; }
.checkbox-group input { width:12px; height:12px; accent-color:var(--accent); }
.checkbox-group label { font-size:11px; color:var(--text-secondary); text-transform:none; letter-spacing:0; margin-bottom:0; }

/* ============= CHARGER ITEMS ============= */
.charger-item {
    background: var(--bg-card); border-radius: var(--radius-md);
    padding: 10px; margin-bottom: 6px; border: 1px solid var(--border);
    transition: all var(--transition);
}
.charger-item:hover { border-color: var(--accent); }
.charger-item.charging { border-color: var(--accent); box-shadow: 0 0 8px rgba(0,230,118,.08); }
.charger-item.faulted { border-color: var(--red); box-shadow: 0 0 8px rgba(239,83,80,.08); }
.charger-item.offline { opacity:.65; }
.charger-header { display:flex; justify-content:space-between; align-items:center; margin-bottom:6px; }
.charger-id { font-size:12px; font-weight:700; color:#fff; }
.charger-badges { display:flex; gap:4px; }
.charger-info { display:grid; grid-template-columns:repeat(2,1fr); gap:4px; margin-bottom:6px; }
.info-item { display:flex; flex-direction:column; }
.info-label { color:var(--text-muted); font-size:9px; text-transform:uppercase; letter-spacing:.4px; margin-bottom:1px; }
.info-value { color:var(--text-secondary); font-size:11px; }
.charger-actions { display:flex; gap:6px; margin-top:6px; padding-top:6px; border-top:1px solid var(--border); }

/* ============= SESSION ITEMS ============= */
.session-item {
    background: var(--bg-card); border-radius: var(--radius-md);
    padding: 10px; margin-bottom: 6px; border: 1px solid var(--border);
}
.session-header { display:flex; justify-content:space-between; align-items:center; margin-bottom:6px; }
.transaction-id { font-size:11px; font-weight:700; color:var(--cyan); }
.session-details { display:grid; grid-template-columns:repeat(2,1fr); gap:4px; }
.session-details > div { color:var(--text-secondary); font-size:11px; }
.session-details strong { color:var(--text-muted); font-weight:500; }
.session-status { padding:2px 6px; border-radius:3px; font-size:9px; font-weight:700; text-transform:uppercase; }
.session-status.active { background:rgba(0,230,118,.12); color:var(--accent); }
.session-status.pending { background:rgba(255,167,38,.12); color:var(--orange); }
.session-status.completed { background:rgba(66,165,245,.12); color:var(--blue); }

/* ============= FAULT ITEMS ============= */
.fault-item {
    background:rgba(239,83,80,.04); border-radius:var(--radius-md);
    padding:8px 10px; margin-bottom:6px; border:1px solid rgba(239,83,80,.15);
}
.fault-item.cleared { background:var(--bg-card); border-color:var(--border); opacity:.6; }
.fault-header { display:flex; justify-content:space-between; align-items:center; margin-bottom:3px; }
.fault-type { font-weight:700; color:var(--red); font-size:11px; }
.fault-cleared-badge { padding:1px 6px; background:rgba(0,230,118,.12); color:var(--accent); border-radius:3px; font-size:8px; font-weight:700; }
.fault-message { color:var(--text-secondary); font-size:11px; margin-bottom:2px; }
.fault-timestamp { color:var(--text-muted); font-size:10px; }

/* ============= METERING ============= */
.metering-grid { display:grid; grid-template-columns:repeat(auto-fit,minmax(100px,1fr)); gap:8px; }
.metering-item {
    background:var(--bg-card); border-radius:var(--radius-md);
    padding:10px; text-align:center; border:1px solid var(--border);
}
.metering-label { color:var(--text-muted); font-size:9px; text-transform:uppercase; letter-spacing:.6px; margin-bottom:3px; }
.metering-value { font-size:16px; font-weight:800; color:var(--accent); }
.metering-unit { font-size:10px; color:var(--text-muted); margin-left:2px; }
.metering-timestamp { text-align:center; color:var(--text-muted); font-size:10px; margin-top:6px; }

/* ============= DEVICE INFO ============= */
.device-info-item { display:flex; justify-content:space-between; padding:5px 0; border-bottom:1px solid var(--border); }
.device-info-item:last-child { border-bottom:none; }
.device-info-label { color:var(--text-muted); font-size:11px; }
.device-info-value { color:var(--text-primary); font-size:11px; font-weight:500; }

/* ============= CONFIG TABLE ============= */
.config-table-wrapper { overflow-x:auto; margin-top:6px; }
.config-key { color:var(--cyan); font-weight:500; font-size:11px; }

/* ============= SETTINGS ============= */
.settings-grid { display:grid; grid-template-columns:repeat(auto-fit,minmax(160px,1fr)); gap:8px; margin-bottom:10px; }
.setting-item { display:flex; flex-direction:column; gap:3px; }
.setting-item label { color:var(--text-muted); font-size:9px; text-transform:uppercase; letter-spacing:.4px; }
.setting-item input, .setting-item select {
    padding:5px 10px; border:1px solid var(--border); border-radius:var(--radius-sm);
    background:var(--bg-base); color:var(--text-primary); font-size:11px;
}
.setting-item input:focus, .setting-item select:focus { outline:none; border-color:var(--accent); }

/* ============= NO DATA / LOADING ============= */
.no-data { text-align:center; color:var(--text-muted); padding:16px 12px; font-size:11px; }
.loading { text-align:center; color:var(--text-muted); padding:16px 12px; font-size:11px; }

/* ============= WALLET ============= */
.wallet-info { display:flex; flex-direction:column; gap:1px; }
.wallet-balance { color:var(--accent); font-weight:700; font-size:11px; }
.wallet-points { color:var(--orange); font-size:9px; }

/* ============= TABS (for admin.html) ============= */
.tabs { display:flex; gap:2px; margin-bottom:10px; border-bottom:1px solid var(--border); padding-bottom:0; }
.tab-btn {
    padding:6px 12px; background:transparent; border:none; border-bottom:2px solid transparent;
    color:var(--text-muted); cursor:pointer; font-size:11px; font-weight:600;
    transition:all var(--transition);
}
.tab-btn:hover { color:var(--text-primary); }
.tab-btn.active { color:var(--accent); border-bottom-color:var(--accent); }

/* ============= RESPONSIVE ============= */

/* Laptop screens (<1400px) — use full width */
@media (max-width:1400px) {
    :root { --container-max: 100%; }
    .stats-grid { grid-template-columns: repeat(auto-fit, minmax(100px,1fr)); }
}

/* Standard desktop (1400-1600px) */
@media (min-width:1401px) and (max-width:1599px) {
    :root { --container-max: 1200px; }
}

/* Large desktop (1600-1919px) */
@media (min-width:1600px) and (max-width:1919px) {
    :root { --container-max: 1360px; }
}

/* Extra large desktop / monitor (1920px+) — cap container so cards don't stretch */
@media (min-width:1920px) {
    :root { --container-max: 1440px; }
}

/* Small laptop (1024-1200px) */
@media (max-width:1200px) {
    .charger-info { grid-template-columns: repeat(2, 1fr); }
    .grid-4 { grid-template-columns:repeat(2,1fr); }
    .grid-3 { grid-template-columns:repeat(2,1fr); }
}

/* Tablet (768-1024px) */
@media (max-width:768px) {
    .page-title { font-size:12px; }
    .dashboard-container, .admin-container { padding:6px 8px; }
    .card-header { flex-direction:column; align-items:flex-start; gap:4px; }
    .charger-info, .session-details { grid-template-columns:1fr; }
    .settings-grid { grid-template-columns:1fr; }
    .stat-card { padding:5px; }
    .stat-value { font-size:12px; }
    .user-controls { flex-direction:column; }
    .top-header { padding:5px 8px; }
    .header-user { display:none; }
    .grid-2,.grid-3,.grid-4 { grid-template-columns:1fr; }
}

/* Mobile */
@media (max-width:480px) {
    .page-title { font-size:11px; }
    .dashboard-container, .admin-container { padding:4px 6px; }
    .stat-card { padding:4px; }
    .stat-value { font-size:11px; }
    .stat-label { font-size:7px; }
}

/* ============= SCROLLBAR ============= */
::-webkit-scrollbar { width:4px; height:4px; }
::-webkit-scrollbar-track { background:transparent; }
::-webkit-scrollbar-thumb { background:var(--border); border-radius:2px; }
::-webkit-scrollbar-thumb:hover { background:var(--border-hover); }

/* ============= ANIMATIONS ============= */
@keyframes fadeIn { from{opacity:0;transform:translateY(3px)} to{opacity:1;transform:translateY(0)} }
.fade-in { animation: fadeIn .3s ease; }