/* DSE892 Portal — Global Styles */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

:root {
  --bg-primary: #0a0e1a;
  --bg-secondary: #111827;
  --bg-card: #1a2236;
  --bg-card2: #1e2a3a;
  --border: rgba(99,179,237,0.12);
  --accent: #3b82f6;
  --accent2: #06b6d4;
  --green: #10b981;
  --red: #ef4444;
  --yellow: #f59e0b;
  --gray: #6b7280;
  --text: #e2e8f0;
  --text2: #94a3b8;
  --text3: #64748b;
  --radius: 14px;
  --shadow: 0 8px 32px rgba(0,0,0,0.4);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:16px;scroll-behavior:smooth}
body{font-family:'Inter',sans-serif;background:var(--bg-primary);color:var(--text);min-height:100vh;line-height:1.6}
a{color:var(--accent);text-decoration:none}
button{cursor:pointer;border:none;outline:none;font-family:inherit}
input{font-family:inherit}
.hidden{display:none!important}

/* ── SCROLLBAR ── */
::-webkit-scrollbar{width:6px;height:6px}
::-webkit-scrollbar-track{background:var(--bg-primary)}
::-webkit-scrollbar-thumb{background:rgba(99,179,237,0.3);border-radius:3px}

/* ── LOGIN PAGE ── */
.login-page{display:flex;align-items:center;justify-content:center;min-height:100vh;background:linear-gradient(135deg,#0a0e1a 0%,#0d1b2e 50%,#0a1628 100%)}
.login-bg{position:fixed;inset:0;z-index:0;overflow:hidden}
.login-particles{position:absolute;inset:0}
.login-container{position:relative;z-index:1;width:100%;max-width:420px;padding:24px}
.login-card{background:rgba(26,34,54,0.95);border:1px solid var(--border);border-radius:24px;padding:48px 40px;backdrop-filter:blur(20px);box-shadow:var(--shadow),0 0 60px rgba(59,130,246,0.08)}
@keyframes cardShake{0%,100%{transform:translateX(0)}25%{transform:translateX(-8px)}75%{transform:translateX(8px)}}
@keyframes cardSuccess{to{opacity:0;transform:scale(1.02)}}
.login-header{text-align:center;margin-bottom:36px}
.login-logo{position:relative;width:72px;height:72px;margin:0 auto 16px;display:flex;align-items:center;justify-content:center}
.logo-icon{font-size:32px;position:relative;z-index:1;animation:pulse 2s ease-in-out infinite}
.logo-ring{position:absolute;inset:-4px;border-radius:50%;border:2px solid rgba(59,130,246,0.4);animation:spin 8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
@keyframes pulse{0%,100%{filter:drop-shadow(0 0 8px rgba(59,130,246,0.6))}50%{filter:drop-shadow(0 0 20px rgba(59,130,246,0.9))}}
.login-title{font-size:28px;font-weight:800;background:linear-gradient(90deg,#60a5fa,#06b6d4);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.login-subtitle{color:var(--text2);font-size:14px;margin-top:4px}
.login-brand{font-size:11px;color:var(--text3);margin-top:6px;letter-spacing:2px;text-transform:uppercase}
.form-group{margin-bottom:20px}
.form-label{display:block;font-size:13px;font-weight:500;color:var(--text2);margin-bottom:8px}
.input-wrapper{position:relative;display:flex;align-items:center}
.input-icon{position:absolute;left:14px;font-size:16px;z-index:1;pointer-events:none}
.form-input{width:100%;background:rgba(255,255,255,0.05);border:1px solid var(--border);border-radius:10px;padding:12px 16px 12px 44px;color:var(--text);font-size:15px;transition:all 0.2s}
.form-input:focus{outline:none;border-color:var(--accent);background:rgba(59,130,246,0.08);box-shadow:0 0 0 3px rgba(59,130,246,0.15)}
.toggle-password{position:absolute;right:12px;background:none;color:var(--text3);font-size:16px;padding:4px;transition:color 0.2s}
.toggle-password:hover{color:var(--text)}
.login-error{display:flex;align-items:center;gap:8px;background:rgba(239,68,68,0.1);border:1px solid rgba(239,68,68,0.3);border-radius:8px;padding:10px 14px;margin-bottom:16px;color:#fca5a5;font-size:13px}
.btn-login{width:100%;padding:14px;background:linear-gradient(135deg,var(--accent),var(--accent2));border-radius:10px;color:#fff;font-size:15px;font-weight:600;letter-spacing:0.5px;display:flex;align-items:center;justify-content:center;gap:10px;transition:all 0.2s;box-shadow:0 4px 20px rgba(59,130,246,0.35)}
.btn-login:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 6px 28px rgba(59,130,246,0.5)}
.btn-login:disabled{opacity:0.7;cursor:not-allowed}
.btn-spinner{width:18px;height:18px;border:2px solid rgba(255,255,255,0.3);border-top-color:#fff;border-radius:50%;animation:spin 0.8s linear infinite}
.login-footer{text-align:center;margin-top:28px;color:var(--text3);font-size:12px}

/* ── NAV ── */
.nav{position:fixed;top:0;left:0;right:0;z-index:100;height:60px;background:rgba(10,14,26,0.9);backdrop-filter:blur(20px);border-bottom:1px solid var(--border);display:flex;align-items:center;padding:0 24px;gap:16px}
.nav-logo{font-size:18px;font-weight:800;background:linear-gradient(90deg,#60a5fa,#06b6d4);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-right:auto}
.nav-link{color:var(--text2);font-size:13px;font-weight:500;padding:6px 12px;border-radius:8px;transition:all 0.2s}
.nav-link:hover,.nav-link.active{color:var(--text);background:rgba(99,179,237,0.1)}
.nav-user{display:flex;align-items:center;gap:8px;color:var(--text2);font-size:13px}
.nav-avatar{width:32px;height:32px;background:linear-gradient(135deg,var(--accent),var(--accent2));border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;color:#fff}
.btn-logout{background:rgba(239,68,68,0.1);color:#fca5a5;border:1px solid rgba(239,68,68,0.2);padding:6px 12px;border-radius:8px;font-size:12px;font-weight:500;transition:all 0.2s}
.btn-logout:hover{background:rgba(239,68,68,0.2)}

/* ── PAGE WRAPPER ── */
.page{padding:80px 24px 32px;max-width:1400px;margin:0 auto}
.page-header{margin-bottom:28px;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px}
.page-title{font-size:26px;font-weight:800;color:var(--text)}
.page-title span{font-size:14px;font-weight:400;color:var(--text3);margin-left:8px}

/* ── SUMMARY CARDS ── */
.summary-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:16px;margin-bottom:28px}
.summary-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:20px 18px;display:flex;flex-direction:column;gap:6px;transition:transform 0.2s}
.summary-card:hover{transform:translateY(-2px)}
.summary-card .value{font-size:36px;font-weight:800;line-height:1}
.summary-card .label{font-size:12px;color:var(--text2);font-weight:500;letter-spacing:0.5px;text-transform:uppercase}
.summary-card.green .value{color:var(--green)}
.summary-card.red .value{color:var(--red)}
.summary-card.yellow .value{color:var(--yellow)}
.summary-card.blue .value{color:var(--accent)}
.summary-card.cyan .value{color:var(--accent2)}

/* ── DEVICE GRID ── */
.devices-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(340px,1fr));gap:20px}
.device-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:20px;cursor:pointer;transition:all 0.25s;position:relative;overflow:hidden}
.device-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:var(--accent);transition:background 0.3s}
.device-card.running::before{background:var(--green)}
.device-card.alarm::before{background:var(--red)}
.device-card.offline::before{background:var(--gray)}
.device-card:hover{transform:translateY(-3px);box-shadow:0 12px 40px rgba(0,0,0,0.4);border-color:rgba(99,179,237,0.25)}
.device-card-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:14px}
.device-name{font-size:16px;font-weight:700}
.device-location{font-size:12px;color:var(--text3);margin-top:2px}
.device-badge{padding:4px 10px;border-radius:20px;font-size:11px;font-weight:600;letter-spacing:0.5px;text-transform:uppercase}
.badge-running{background:rgba(16,185,129,0.15);color:#34d399;border:1px solid rgba(16,185,129,0.3)}
.badge-stopped{background:rgba(107,114,128,0.15);color:#9ca3af;border:1px solid rgba(107,114,128,0.3)}
.badge-alarm{background:rgba(239,68,68,0.15);color:#f87171;border:1px solid rgba(239,68,68,0.3)}
.badge-offline{background:rgba(55,65,81,0.3);color:#6b7280;border:1px solid rgba(75,85,99,0.3)}
.badge-starting{background:rgba(245,158,11,0.15);color:#fbbf24;border:1px solid rgba(245,158,11,0.3)}
.badge-sim{background:rgba(99,179,237,0.1);color:#93c5fd;border:1px solid rgba(99,179,237,0.2)}
.device-metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:16px}
.metric{text-align:center;background:rgba(255,255,255,0.03);border-radius:8px;padding:10px 6px}
.metric-val{font-size:18px;font-weight:700;line-height:1}
.metric-lbl{font-size:10px;color:var(--text3);margin-top:3px;text-transform:uppercase;letter-spacing:0.5px}
.fuel-bar-wrap{margin-bottom:14px}
.fuel-bar-label{display:flex;justify-content:space-between;font-size:11px;color:var(--text3);margin-bottom:4px}
.fuel-bar{height:5px;background:rgba(255,255,255,0.08);border-radius:3px;overflow:hidden}
.fuel-bar-fill{height:100%;background:linear-gradient(90deg,var(--accent),var(--accent2));border-radius:3px;transition:width 1s ease}
.fuel-bar-fill.low{background:linear-gradient(90deg,#ef4444,#f59e0b)}
.device-actions{display:flex;gap:8px}
.btn-start{flex:1;padding:9px;background:linear-gradient(135deg,rgba(16,185,129,0.2),rgba(5,150,105,0.3));color:#34d399;border:1px solid rgba(16,185,129,0.3);border-radius:8px;font-size:13px;font-weight:600;transition:all 0.2s}
.btn-start:hover{background:linear-gradient(135deg,rgba(16,185,129,0.35),rgba(5,150,105,0.45));transform:translateY(-1px)}
.btn-stop{flex:1;padding:9px;background:linear-gradient(135deg,rgba(239,68,68,0.15),rgba(220,38,38,0.25));color:#f87171;border:1px solid rgba(239,68,68,0.3);border-radius:8px;font-size:13px;font-weight:600;transition:all 0.2s}
.btn-stop:hover{background:linear-gradient(135deg,rgba(239,68,68,0.3),rgba(220,38,38,0.4));transform:translateY(-1px)}
.btn-detail{padding:9px 14px;background:rgba(255,255,255,0.05);color:var(--text2);border:1px solid var(--border);border-radius:8px;font-size:13px;transition:all 0.2s}
.btn-detail:hover{background:rgba(255,255,255,0.1)}
.device-model{font-size:10px;color:var(--text3);margin-top:10px;letter-spacing:1px;text-transform:uppercase}
.alarm-count{display:flex;align-items:center;gap:4px;color:var(--red);font-size:12px;font-weight:600}

/* ── LOADING ── */
.loading-overlay{position:fixed;inset:0;background:var(--bg-primary);z-index:999;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:16px}
.loading-spinner{width:48px;height:48px;border:3px solid rgba(99,179,237,0.2);border-top-color:var(--accent);border-radius:50%;animation:spin 1s linear infinite}
.loading-text{color:var(--text2);font-size:14px}

/* ── CONFIRM MODAL ── */
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,0.7);backdrop-filter:blur(4px);z-index:500;display:flex;align-items:center;justify-content:center;padding:24px;opacity:0;pointer-events:none;transition:opacity 0.2s}
.modal-overlay.open{opacity:1;pointer-events:all}
.modal-box{background:var(--bg-card);border:1px solid var(--border);border-radius:20px;padding:32px;max-width:400px;width:100%;box-shadow:var(--shadow);transform:scale(0.95);transition:transform 0.2s}
.modal-overlay.open .modal-box{transform:scale(1)}
.modal-icon{font-size:48px;text-align:center;margin-bottom:16px}
.modal-title{font-size:20px;font-weight:700;text-align:center;margin-bottom:8px}
.modal-desc{color:var(--text2);text-align:center;font-size:14px;margin-bottom:24px}
.modal-actions{display:flex;gap:12px}
.modal-cancel{flex:1;padding:11px;background:rgba(255,255,255,0.05);color:var(--text2);border:1px solid var(--border);border-radius:10px;font-size:14px;font-weight:500}
.modal-confirm{flex:1;padding:11px;border-radius:10px;font-size:14px;font-weight:600;transition:all 0.2s}
.modal-confirm.danger{background:linear-gradient(135deg,rgba(239,68,68,0.8),rgba(220,38,38,1));color:#fff}
.modal-confirm.success{background:linear-gradient(135deg,rgba(16,185,129,0.8),rgba(5,150,105,1));color:#fff}

/* ── DETAIL PAGE ── */
.detail-header{display:flex;align-items:center;gap:16px;margin-bottom:28px;flex-wrap:wrap}
.detail-back{color:var(--text2);font-size:14px;display:flex;align-items:center;gap:6px;padding:8px 14px;background:rgba(255,255,255,0.05);border-radius:8px;transition:all 0.2s;border:1px solid var(--border)}
.detail-back:hover{color:var(--text);background:rgba(255,255,255,0.1)}
.detail-title{flex:1}
.detail-title h1{font-size:24px;font-weight:800}
.detail-title p{font-size:13px;color:var(--text3);margin-top:2px}
.control-panel{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:24px;margin-bottom:24px}
.control-panel h2{font-size:15px;font-weight:600;color:var(--text2);margin-bottom:16px;letter-spacing:0.5px;text-transform:uppercase}
.control-buttons{display:flex;gap:12px;flex-wrap:wrap}
.ctrl-btn{display:flex;align-items:center;gap:8px;padding:12px 20px;border-radius:10px;font-size:14px;font-weight:600;transition:all 0.2s;min-width:140px;justify-content:center}
.ctrl-btn.start{background:linear-gradient(135deg,rgba(16,185,129,0.25),rgba(5,150,105,0.35));color:#34d399;border:1px solid rgba(16,185,129,0.4)}
.ctrl-btn.start:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(16,185,129,0.25)}
.ctrl-btn.stop{background:linear-gradient(135deg,rgba(239,68,68,0.2),rgba(220,38,38,0.3));color:#f87171;border:1px solid rgba(239,68,68,0.4)}
.ctrl-btn.stop:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(239,68,68,0.25)}
.ctrl-btn.secondary{background:rgba(255,255,255,0.05);color:var(--text2);border:1px solid var(--border)}
.ctrl-btn.secondary:hover{background:rgba(255,255,255,0.1)}
.ctrl-btn:disabled{opacity:0.4;cursor:not-allowed;transform:none!important}
.metrics-section{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:20px;margin-bottom:24px}
.metrics-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:20px}
.metrics-card h3{font-size:13px;font-weight:600;color:var(--text2);text-transform:uppercase;letter-spacing:0.5px;margin-bottom:16px}
.metric-row{display:flex;justify-content:space-between;align-items:center;padding:8px 0;border-bottom:1px solid rgba(255,255,255,0.05)}
.metric-row:last-child{border-bottom:none}
.metric-row .lbl{font-size:13px;color:var(--text2)}
.metric-row .val{font-size:14px;font-weight:600;color:var(--text)}
.metric-row .val.warn{color:var(--yellow)}
.metric-row .val.danger{color:var(--red)}
.metric-row .val.ok{color:var(--green)}
.status-indicator{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:20px;font-size:12px;font-weight:600}
.gauge-wrap{display:flex;flex-direction:column;align-items:center;gap:8px;padding:16px}
.gauge-val{font-size:32px;font-weight:800}
.gauge-lbl{font-size:12px;color:var(--text3);text-transform:uppercase;letter-spacing:0.5px}

/* ── ALARM PANEL ── */
.alarm-panel{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:20px;margin-bottom:24px}
.alarm-panel h2{font-size:15px;font-weight:600;color:var(--text2);text-transform:uppercase;letter-spacing:0.5px;margin-bottom:16px;display:flex;align-items:center;gap:8px}
.alarm-item{display:flex;align-items:center;gap:12px;padding:10px 14px;border-radius:8px;margin-bottom:8px;font-size:13px}
.alarm-item.shutdown{background:rgba(239,68,68,0.1);border-left:3px solid var(--red)}
.alarm-item.warning{background:rgba(245,158,11,0.1);border-left:3px solid var(--yellow)}
.alarm-item.info{background:rgba(99,179,237,0.1);border-left:3px solid var(--accent)}
.alarm-label{flex:1;font-weight:500}
.alarm-time{color:var(--text3);font-size:11px}
.no-alarms{color:var(--text3);font-size:13px;text-align:center;padding:20px;display:flex;align-items:center;justify-content:center;gap:8px}

/* ── ADMIN ── */
.admin-section{margin-bottom:32px}
.admin-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:24px}
.admin-card h2{font-size:16px;font-weight:700;margin-bottom:20px;display:flex;align-items:center;gap:8px}
.table-wrap{overflow-x:auto}
table{width:100%;border-collapse:collapse}
th{font-size:11px;font-weight:600;color:var(--text3);text-transform:uppercase;letter-spacing:0.5px;padding:10px 14px;text-align:left;border-bottom:1px solid var(--border)}
td{padding:12px 14px;font-size:13px;border-bottom:1px solid rgba(255,255,255,0.04);vertical-align:middle}
tr:last-child td{border-bottom:none}
tr:hover td{background:rgba(255,255,255,0.02)}
.td-actions{display:flex;gap:6px}
.btn-xs{padding:4px 10px;border-radius:6px;font-size:11px;font-weight:600;transition:all 0.15s}
.btn-xs.edit{background:rgba(59,130,246,0.1);color:#93c5fd;border:1px solid rgba(59,130,246,0.2)}
.btn-xs.del{background:rgba(239,68,68,0.1);color:#f87171;border:1px solid rgba(239,68,68,0.2)}
.btn-xs:hover{filter:brightness(1.2)}
.btn-primary{background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff;padding:10px 18px;border-radius:10px;font-size:13px;font-weight:600;transition:all 0.2s}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 4px 16px rgba(59,130,246,0.35)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.input-field{background:rgba(255,255,255,0.05);border:1px solid var(--border);border-radius:8px;padding:10px 14px;color:var(--text);font-size:13px;width:100%;transition:border-color 0.2s}
.input-field:focus{outline:none;border-color:var(--accent)}
select.input-field option{background:var(--bg-secondary)}
.form-label-sm{font-size:12px;color:var(--text2);margin-bottom:6px;font-weight:500}

/* ── TOAST ── */
.toast-container{position:fixed;top:72px;right:24px;z-index:9999;display:flex;flex-direction:column;gap:10px}
.toast{background:var(--bg-card2);border:1px solid var(--border);border-radius:10px;padding:12px 18px;font-size:13px;box-shadow:var(--shadow);display:flex;align-items:center;gap:10px;animation:toastIn 0.3s ease;max-width:360px}
.toast.success{border-left:3px solid var(--green);color:#6ee7b7}
.toast.error{border-left:3px solid var(--red);color:#fca5a5}
.toast.info{border-left:3px solid var(--accent);color:#93c5fd}
@keyframes toastIn{from{opacity:0;transform:translateX(20px)}to{opacity:1;transform:translateX(0)}}
@keyframes toastOut{to{opacity:0;transform:translateX(20px)}}

/* ── STATUS DOT ── */
.dot{display:inline-block;width:8px;height:8px;border-radius:50%;margin-right:4px}
.dot.green{background:var(--green);box-shadow:0 0 6px var(--green)}
.dot.red{background:var(--red);box-shadow:0 0 6px var(--red)}
.dot.yellow{background:var(--yellow);box-shadow:0 0 6px var(--yellow)}
.dot.gray{background:var(--gray)}
.dot.pulse{animation:dotPulse 1.5s ease-in-out infinite}
@keyframes dotPulse{0%,100%{transform:scale(1);opacity:1}50%{transform:scale(1.4);opacity:0.7}}

/* ── EMPTY STATE ── */
.empty-state{text-align:center;padding:60px 24px;color:var(--text3)}
.empty-state .icon{font-size:48px;margin-bottom:16px;opacity:0.5}
.empty-state p{font-size:14px;margin-top:8px}

/* ── RESPONSIVE ── */
@media(max-width:768px){
  .page{padding:72px 16px 24px}
  .devices-grid{grid-template-columns:1fr}
  .form-row{grid-template-columns:1fr}
  .nav{padding:0 16px;gap:10px}
  .nav-link span{display:none}
  .metrics-section{grid-template-columns:1fr}
  .control-buttons{flex-direction:column}
  .ctrl-btn{min-width:unset;width:100%}
}