/* ═══════════════════════════════════════════════════════════════
   FWenergy – Portal montera – Style v2
   ═══════════════════════════════════════════════════════════════ */
:root {
  --bg:#0f1117; --bg2:#181b24; --bg3:#1e2230; --surface:#252a37;
  --border:#2d3348; --text:#e4e6ed; --text2:#9ca3b8;
  --accent:#4f8cff; --accent2:#6c5ce7;
  --green:#00d68f; --green-dim:#00d68f22;
  --red:#ff6b6b; --red-dim:#ff6b6b22;
  --orange:#ffa94d; --orange-dim:#ffa94d22;
  --purple:#a78bfa; --purple-dim:#a78bfa22;
  --radius:12px; --radius-sm:8px;
  --shadow:0 4px 24px rgba(0,0,0,.35);
  --tr:.25s cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:16px;scroll-behavior:smooth}
body{font-family:'Segoe UI',system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--text);min-height:100vh;line-height:1.6}

/* ── Loading ──────────────────────────────────────────────────── */
.loading-overlay{position:fixed;inset:0;background:var(--bg);display:flex;flex-direction:column;align-items:center;justify-content:center;z-index:9999;gap:16px;color:var(--text2)}
.spinner{width:48px;height:48px;border:4px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

/* ── Login ─────────────────────────────────────────────────────── */
.view{min-height:100vh}
#view-login{display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--bg) 0%,#141822 50%,var(--bg2) 100%)}
.login-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:48px 40px;text-align:center;max-width:420px;width:90%}
.login-logo{font-size:4rem;margin-bottom:8px}
.login-card h1{font-size:1.8rem;margin-bottom:8px;letter-spacing:-.02em}
.login-card h1 b{color:var(--accent)}
.login-sub{color:var(--text2);font-size:.9rem;margin-bottom:32px}
.btn-google{display:inline-flex;align-items:center;gap:12px;padding:12px 28px;background:#fff;color:#333;border:none;border-radius:var(--radius-sm);font-size:1rem;font-weight:600;cursor:pointer;transition:var(--tr);font-family:inherit;box-shadow:0 2px 8px rgba(0,0,0,.2)}
.btn-google:hover{box-shadow:0 4px 16px rgba(0,0,0,.3);transform:translateY(-1px)}
.login-footer{color:var(--text2);font-size:.75rem;margin-top:24px}

/* ── Header ───────────────────────────────────────────────────── */
header{background:var(--bg2);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100;backdrop-filter:blur(12px)}
.header-inner{max-width:1280px;margin:0 auto;padding:0 24px;height:56px;display:flex;align-items:center;gap:16px}
.logo{font-size:1.3rem;letter-spacing:-.02em;white-space:nowrap}
.logo b{color:var(--accent)}
.breadcrumb{flex:1;display:flex;align-items:center;gap:6px;font-size:.85rem;color:var(--text2);overflow:hidden}
.breadcrumb a{color:var(--accent);text-decoration:none;cursor:pointer}
.breadcrumb a:hover{text-decoration:underline}
.breadcrumb .sep{color:var(--border)}
.header-right{display:flex;align-items:center;gap:12px;font-size:.85rem;color:var(--text2);white-space:nowrap}
.avatar{width:28px;height:28px;border-radius:50%;border:2px solid var(--border)}
.user-menu{display:flex;align-items:center;gap:8px}
.user-name{max-width:120px;overflow:hidden;text-overflow:ellipsis}

/* ── Main ─────────────────────────────────────────────────────── */
main{max-width:1280px;margin:0 auto;padding:24px;display:flex;flex-direction:column;gap:24px}
section{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:24px}
section h2{font-size:1.1rem;font-weight:600;margin-bottom:16px}
section h3{font-size:1rem;font-weight:600;margin-bottom:12px}
.section-header{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;margin-bottom:16px}
.section-header h2,.section-header h3{margin-bottom:0}

/* ── Cards ─────────────────────────────────────────────────────── */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:14px}
.cards-dash{grid-template-columns:repeat(auto-fit,minmax(180px,1fr))}
.card{background:var(--bg3);border:1px solid var(--border);border-radius:var(--radius);padding:20px;position:relative;overflow:hidden;transition:var(--tr)}
.card-big .card-value{font-size:2.6rem}
.card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px}
.card-price::before{background:var(--accent)}
.card-inverter::before{background:var(--green)}
.card-inverter.off::before{background:var(--red)}
.card-threshold::before{background:var(--orange)}
.card-plc::before{background:var(--accent2)}
.card-fin-green::before{background:var(--green)}
.card-fin-blue::before{background:var(--accent)}
.card-fin-purple::before{background:var(--purple)}
.card-fin-orange::before{background:var(--orange)}
.card:hover{border-color:var(--accent);transform:translateY(-2px);box-shadow:var(--shadow)}
.card-label{font-size:.75rem;text-transform:uppercase;letter-spacing:.08em;color:var(--text2);margin-bottom:6px}
.card-value{font-size:2rem;font-weight:700;line-height:1.1;font-variant-numeric:tabular-nums}
.card-unit{font-size:.8rem;color:var(--text2);margin-top:4px}
.card-sub{font-size:.78rem;color:var(--text2);margin-top:6px;line-height:1.4}
.card-inverter .card-value{color:var(--green)}
.card-inverter.off .card-value{color:var(--red)}

/* ── Inverter Detail Panel ─────────────────────────────────────── */
.card-inverter-detail{grid-column:1/-1;padding-bottom:24px}
.inv-mode-badge{display:inline-block;font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.1em;padding:2px 10px;border-radius:20px;margin-top:6px;background:var(--accent);color:#fff}
.inv-mode-badge.manual{background:var(--orange)}
.inv-analysis{margin-top:16px;padding-top:14px;border-top:1px solid var(--border)}
.inv-bar-container{position:relative;margin-bottom:12px}
.inv-bar-track{display:flex;height:18px;border-radius:9px;overflow:hidden;position:relative;background:var(--bg2)}
.inv-bar-zone{height:100%;transition:width .5s ease}
.inv-zone-on{background:var(--green-dim);border-right:1px solid var(--green)}
.inv-zone-hyst{background:var(--orange-dim);border-right:1px solid var(--orange)}
.inv-zone-off{background:var(--red-dim)}
.inv-bar-marker{position:absolute;top:-14px;font-size:14px;line-height:1;color:var(--accent);font-weight:700;transform:translateX(-50%);transition:left .5s ease;z-index:3;text-shadow:0 0 6px var(--accent)}
.inv-bar-threshold{position:absolute;top:0;bottom:0;width:2px;background:var(--text);opacity:.5;transform:translateX(-50%);transition:left .5s ease;z-index:2}
.inv-bar-labels{display:flex;justify-content:space-between;font-size:.68rem;text-transform:uppercase;letter-spacing:.06em;color:var(--text2);margin-top:4px;padding:0 2px}
.inv-label-on{color:var(--green)}
.inv-label-hyst{color:var(--orange)}
.inv-label-off{color:var(--red)}
.inv-bar-values{display:flex;justify-content:space-between;font-size:.65rem;color:var(--border);margin-top:2px;padding:0 2px}
.inv-detail-rows{display:flex;flex-direction:column;gap:8px}
.inv-row{display:flex;align-items:center;gap:10px;font-size:.85rem;line-height:1.4;padding:8px 12px;border-radius:var(--radius-sm);background:var(--bg2)}
.inv-row-icon{font-size:1.1rem;flex-shrink:0}
.inv-row-text{flex:1}
.inv-row-val{font-weight:700;font-variant-numeric:tabular-nums;white-space:nowrap}
.inv-row-val.val-on{color:var(--green)}
.inv-row-val.val-off{color:var(--red)}
.inv-row-val.val-wait{color:var(--orange)}
.inv-row-val.val-info{color:var(--accent)}
.inv-row-highlight{border:1px solid var(--accent);background:rgba(79,140,255,.08)}
.inv-next{font-size:.82rem;padding:10px 14px;background:rgba(79,140,255,.06);border:1px dashed var(--accent);border-radius:var(--radius-sm);color:var(--text);margin-top:4px;line-height:1.5}
.card-price .card-value.high{color:var(--red)}
.card-price .card-value.mid{color:var(--orange)}
.card-price .card-value.low{color:var(--green)}
.plc-connected{color:var(--green)}
.plc-disconnected{color:var(--red)}

/* ── Location Grid ─────────────────────────────────────────────── */
.loc-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:14px}
.loc-card{background:var(--bg3);border:1px solid var(--border);border-radius:var(--radius);padding:20px;cursor:pointer;transition:var(--tr);position:relative}
.loc-card:hover{border-color:var(--accent);transform:translateY(-2px);box-shadow:var(--shadow)}
.loc-card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}
.loc-card-name{font-size:1.1rem;font-weight:600}
.loc-card-addr{font-size:.8rem;color:var(--text2);margin-bottom:12px}
.loc-card-status{display:flex;gap:16px;font-size:.85rem}
.loc-card-cmd{font-weight:700;padding:3px 10px;border-radius:4px;font-size:.8rem}
.loc-card-cmd.on{background:var(--green-dim);color:var(--green)}
.loc-card-cmd.off{background:var(--red-dim);color:var(--red)}
.loc-card-price{color:var(--text2)}
.loc-card-time{color:var(--border);font-size:.78rem;margin-left:auto}
.loc-card-plc{position:absolute;top:16px;right:16px;width:10px;height:10px;border-radius:50%}
.loc-card-plc.online{background:var(--green);box-shadow:0 0 8px var(--green)}
.loc-card-plc.offline{background:var(--red);box-shadow:0 0 8px var(--red)}
.loc-card-plc.unknown{background:var(--border)}

/* ── Tabs ──────────────────────────────────────────────────────── */
.tabs{display:flex;gap:4px;border-bottom:1px solid var(--border);padding:0 0 0 0;margin-bottom:20px;overflow-x:auto}
.tab{background:transparent;border:none;color:var(--text2);padding:10px 18px;font-size:.9rem;cursor:pointer;font-family:inherit;border-bottom:2px solid transparent;transition:var(--tr);white-space:nowrap}
.tab:hover{color:var(--text)}
.tab.active{color:var(--accent);border-bottom-color:var(--accent)}
.tab-panel{display:none}
.tab-panel.active{display:block}

/* ── Form ──────────────────────────────────────────────────────── */
.form-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:14px}
.form-item label{display:block;font-size:.78rem;color:var(--text2);text-transform:uppercase;letter-spacing:.05em;margin-bottom:5px}
.form-item input,.form-item select{width:100%;background:var(--bg3);border:1px solid var(--border);color:var(--text);padding:10px 12px;border-radius:var(--radius-sm);font-size:1rem;font-family:inherit;transition:var(--tr)}
.form-item input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(79,140,255,.15)}
.form-actions{display:flex;gap:12px;margin-top:20px}
.feedback{font-size:.85rem;min-height:1.4em;padding:4px 0;margin-top:8px}
.feedback.ok{color:var(--green)}
.feedback.err{color:var(--red)}

/* ── Buttons ──────────────────────────────────────────────────── */
.btn{display:inline-flex;align-items:center;gap:8px;padding:10px 22px;border:none;border-radius:var(--radius-sm);font-size:.9rem;font-weight:600;cursor:pointer;transition:var(--tr);font-family:inherit}
.btn:disabled{opacity:.4;cursor:not-allowed}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:#3d7aee}
.btn-ghost{background:transparent;color:var(--text2);border:1px solid var(--border)}
.btn-ghost:hover{color:var(--text);border-color:var(--text2)}
.btn-on{background:var(--green-dim);color:var(--green);border:1px solid var(--green)}
.btn-on:not(:disabled):hover{background:var(--green);color:#fff}
.btn-off{background:var(--red-dim);color:var(--red);border:1px solid var(--red)}
.btn-off:not(:disabled):hover{background:var(--red);color:#fff}
.btn-danger{background:var(--red-dim);color:var(--red);border:1px solid var(--red)}
.btn-danger:hover{background:var(--red);color:#fff}
.btn-sm{padding:6px 14px;font-size:.8rem;background:var(--bg3);color:var(--text2);border:1px solid var(--border);border-radius:var(--radius-sm);cursor:pointer}
.btn-sm:hover{background:var(--accent);color:#fff;border-color:var(--accent)}

/* ── Control ──────────────────────────────────────────────────── */
.control-panel{display:flex;flex-direction:column;gap:14px}
.control-mode{display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.switch-label{display:flex;align-items:center;gap:12px;font-size:.95rem}
.switch{position:relative;width:48px;height:24px;display:inline-block}
.switch input{opacity:0;width:0;height:0}
.slider{position:absolute;inset:0;background:var(--bg3);border-radius:24px;cursor:pointer;transition:var(--tr);border:1px solid var(--border)}
.slider::before{content:'';position:absolute;width:18px;height:18px;left:3px;bottom:2px;background:var(--text2);border-radius:50%;transition:var(--tr)}
.switch input:checked+.slider{background:var(--accent);border-color:var(--accent)}
.switch input:checked+.slider::before{transform:translateX(23px);background:#fff}
.mode-badge{padding:3px 10px;border-radius:20px;font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;background:var(--green-dim);color:var(--green)}
.mode-badge.manual{background:var(--orange-dim);color:var(--orange)}
.control-buttons{display:flex;gap:12px}

/* ── Chart ─────────────────────────────────────────────────────── */
.chart-section .section-header{margin-bottom:16px}
.date-picker{display:flex;align-items:center;gap:6px}
.date-picker button{background:var(--bg3);border:1px solid var(--border);color:var(--text);width:32px;height:32px;border-radius:var(--radius-sm);cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:.8rem;transition:var(--tr)}
.date-picker button:hover{background:var(--accent);border-color:var(--accent)}
.date-picker input[type="date"]{background:var(--bg3);border:1px solid var(--border);color:var(--text);padding:5px 10px;border-radius:var(--radius-sm);font-size:.85rem;font-family:inherit}
.date-picker input[type="date"]::-webkit-calendar-picker-indicator{filter:invert(.8)}
.chart-wrapper{position:relative;width:100%;height:340px}
.chart-stats{display:flex;gap:24px;flex-wrap:wrap;margin-top:10px;font-size:.85rem;color:var(--text2)}
.chart-stats .stat-val{font-weight:700;color:var(--text)}
.chart-stats .stat-min{color:var(--green)}
.chart-stats .stat-max{color:var(--red)}
.chart-stats .stat-avg{color:var(--orange)}

/* ── Tables ────────────────────────────────────────────────────── */
.table-wrap{overflow-x:auto}
.data-table{width:100%;border-collapse:collapse;font-size:.85rem}
.data-table th{text-align:left;padding:8px 10px;font-size:.72rem;text-transform:uppercase;letter-spacing:.06em;color:var(--text2);border-bottom:1px solid var(--border)}
.data-table td{padding:8px 10px;border-bottom:1px solid var(--border);vertical-align:top}
.data-table tr:last-child td{border-bottom:none}
.data-table .empty{text-align:center;color:var(--text2);padding:20px}
.log-level{display:inline-block;padding:2px 8px;border-radius:4px;font-size:.68rem;font-weight:700;text-transform:uppercase}
.log-level.INFO{background:var(--accent);color:#fff;opacity:.8}
.log-level.WARN{background:var(--orange);color:#000}
.log-level.ERROR{background:var(--red);color:#fff}
.log-time{color:var(--text2);white-space:nowrap;font-variant-numeric:tabular-nums}
.val-pos{color:var(--green);font-weight:600}
.val-neg{color:var(--red);font-weight:600}

/* ── Footer ───────────────────────────────────────────────────── */
footer{text-align:center;padding:24px;color:var(--text2);font-size:.78rem;border-top:1px solid var(--border)}

/* ── Responsive ───────────────────────────────────────────────── */

/* ── Tablet (≤ 900px) ──────────────────────────────────────────── */
@media(max-width:900px){
  .cards{grid-template-columns:repeat(2,1fr)}
  .cards-dash{grid-template-columns:repeat(2,1fr)}
  .cards-fin{grid-template-columns:repeat(2,1fr)}
  .loc-grid{grid-template-columns:1fr}
  .header-inner{padding:0 16px}
  .user-name{max-width:80px}
}

/* ── Mobile (≤ 600px) ──────────────────────────────────────────── */
@media(max-width:600px){
  html{font-size:15px}

  /* Header */
  header{position:sticky;top:0}
  .header-inner{padding:0 10px;height:48px;gap:8px}
  .logo{font-size:1.1rem}
  .logo span{display:none}
  .breadcrumb{font-size:.78rem;min-width:0}
  .header-right{gap:6px;font-size:.78rem}
  .user-name{display:none}
  .avatar{width:24px;height:24px}
  #clock{display:none}
  .btn-sm{padding:4px 10px;font-size:.72rem}

  /* Main layout */
  main{padding:10px;gap:12px}
  section{padding:14px;border-radius:var(--radius-sm)}
  section h2{font-size:1rem}
  section h3{font-size:.92rem}
  .section-header{flex-direction:column;align-items:stretch;gap:8px}
  .section-header h2{font-size:.95rem}

  /* Cards */
  .cards{grid-template-columns:1fr;gap:10px}
  .cards-dash{grid-template-columns:repeat(2,1fr);gap:8px}
  .cards-fin{grid-template-columns:1fr;gap:10px}
  .card{padding:12px;border-radius:var(--radius-sm)}
  .card-label{font-size:.68rem;margin-bottom:4px}
  .card-value{font-size:1.4rem}
  .card-big .card-value{font-size:1.8rem}
  .card-unit{font-size:.72rem;margin-top:2px}
  .card-sub{font-size:.72rem;margin-top:4px}
  .card:hover{transform:none;box-shadow:none}

  /* Inverter detail — full-width */
  .card-inverter-detail{grid-column:1/-1;padding:14px 12px 18px}
  .inv-mode-badge{font-size:.65rem;padding:2px 8px;margin-top:4px}
  .inv-analysis{margin-top:12px;padding-top:10px}
  .inv-bar-track{height:14px;border-radius:7px}
  .inv-bar-marker{top:-13px;font-size:12px}
  .inv-bar-labels{font-size:.6rem;margin-top:3px}
  .inv-bar-values{font-size:.58rem;margin-top:1px}
  .inv-detail-rows{gap:6px}
  .inv-row{padding:6px 10px;font-size:.78rem;gap:8px;flex-wrap:wrap}
  .inv-row-icon{font-size:.95rem}
  .inv-row-val{font-size:.78rem}
  .inv-next{font-size:.75rem;padding:8px 10px}

  /* Tabs */
  .tabs{gap:0;margin-bottom:14px;-webkit-overflow-scrolling:touch}
  .tab{padding:8px 10px;font-size:.76rem;flex-shrink:0}

  /* Chart */
  .chart-wrapper{height:200px}
  .chart-stats{gap:8px 16px;font-size:.78rem}
  .date-picker{justify-content:center;flex-wrap:wrap}
  .date-picker input[type="date"]{width:auto;font-size:.78rem}
  .date-picker button{width:28px;height:28px;font-size:.72rem}

  /* Forms */
  .form-grid{grid-template-columns:1fr;gap:10px}
  .form-item input,.form-item select{padding:8px 10px;font-size:.9rem}
  .form-actions{flex-direction:column;gap:8px}

  /* Buttons */
  .btn{padding:10px 16px;font-size:.85rem;justify-content:center;width:100%}
  .control-buttons{flex-direction:column;gap:8px}
  .control-mode{gap:10px}
  .switch-label{font-size:.88rem}

  /* Location cards */
  .loc-grid{grid-template-columns:1fr}
  .loc-card{padding:14px}
  .loc-card-name{font-size:1rem}
  .loc-card-status{flex-wrap:wrap;gap:8px}

  /* Tables */
  .data-table{font-size:.75rem}
  .data-table th{padding:6px 6px;font-size:.65rem}
  .data-table td{padding:6px 6px}
  .log-time{font-size:.7rem}

  /* Login */
  .login-card{padding:32px 20px}
  .login-logo{font-size:3rem}
  .login-card h1{font-size:1.4rem}
  .login-sub{font-size:.82rem;margin-bottom:24px}
  .btn-google{padding:10px 20px;font-size:.9rem}

  /* Footer */
  footer{padding:16px 10px;font-size:.7rem}
}

/* ── Very small (≤ 380px) ──────────────────────────────────────── */
@media(max-width:380px){
  .cards-dash{grid-template-columns:1fr}
  .card-value{font-size:1.2rem}
  .card-big .card-value{font-size:1.5rem}
  main{padding:8px;gap:10px}
  section{padding:10px}
  .inv-bar-values span:nth-child(3){display:none}
  .tab{padding:6px 8px;font-size:.72rem}
}