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

/* ===== RESET & VARIABLES ===== */
*{margin:0;padding:0;box-sizing:border-box}
:root{
  --sidebar-w:240px;
  --navy:#0a1628;--navy2:#0f1d32;--navy3:#162544;
  --teal:#0d9488;--teal-l:#14b8a6;--teal-g:#5eead4;
  --orange:#f97316;--orange-l:#fb923c;
  --green:#22c55e;--red:#ef4444;--yellow:#eab308;
  --w:#ffffff;
  --g50:#f8fafc;--g100:#f1f5f9;--g200:#e2e8f0;--g300:#cbd5e1;
  --g400:#94a3b8;--g500:#64748b;--g600:#475569;--g800:#1e293b;
}
html{scroll-behavior:smooth}
body{font-family:'Inter',sans-serif;background:#060d1b;color:var(--w);overflow-x:hidden}
#app{display:flex;min-height:100vh}

/* ===== SIDEBAR ===== */
.sidebar{width:var(--sidebar-w);background:var(--navy);border-right:1px solid rgba(255,255,255,.06);display:flex;flex-direction:column;position:fixed;top:0;left:0;bottom:0;z-index:50;transition:transform .3s}
.sidebar-logo{padding:1.2rem 1.2rem;display:flex;align-items:center;gap:10px;border-bottom:1px solid rgba(255,255,255,.06)}
.logo-icon{width:32px;height:32px;background:linear-gradient(135deg,var(--teal),var(--teal-l));border-radius:8px;display:flex;align-items:center;justify-content:center}
.logo-icon svg{width:18px;height:18px}
.logo-text{font-weight:700;font-size:1.05rem;color:var(--w)}
.logo-text .accent{color:var(--teal-l)}
.sidebar-nav{padding:.5rem 0;flex:1;overflow-y:auto}
.nav-section{padding:.6rem 1.2rem;color:var(--g500);font-size:.6rem;text-transform:uppercase;letter-spacing:1.5px;font-weight:600;margin-top:.5rem}
.nav-item{display:flex;align-items:center;gap:10px;padding:.6rem 1.2rem;color:var(--g400);font-size:.82rem;font-weight:500;cursor:pointer;border-left:3px solid transparent;text-decoration:none;transition:all .15s}
.nav-item:hover{background:rgba(255,255,255,.03);color:var(--w)}
.nav-item.active{background:rgba(13,148,136,.1);color:var(--teal-l);border-left-color:var(--teal-l)}
.nav-item svg{width:18px;height:18px;opacity:.7;flex-shrink:0}
.nav-item.active svg{opacity:1}
.sidebar-user{padding:1rem 1.2rem;border-top:1px solid rgba(255,255,255,.06);display:flex;align-items:center;gap:10px}
.user-avatar{width:32px;height:32px;background:var(--navy3);border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:.75rem;font-weight:700;color:var(--teal-l);flex-shrink:0}
.user-info{overflow:hidden}
.user-name{font-size:.8rem;font-weight:600;color:var(--w);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.user-role{color:var(--g500);font-size:.65rem}

/* ===== MAIN ===== */
.main{margin-left:var(--sidebar-w);flex:1;min-width:0}
.topbar{height:56px;background:var(--navy);border-bottom:1px solid rgba(255,255,255,.06);display:flex;align-items:center;justify-content:space-between;padding:0 1.5rem;position:sticky;top:0;z-index:40}
.topbar-left{display:flex;align-items:center;gap:.8rem}
.menu-toggle{display:none;background:none;border:none;cursor:pointer;padding:4px}
.menu-toggle svg{width:20px;height:20px;stroke:var(--g400)}
.page-title{font-size:1rem;font-weight:700;color:var(--w)}
.status-badge{background:rgba(34,197,94,.15);color:var(--green);padding:2px 8px;border-radius:100px;font-size:.65rem;font-weight:600}
.topbar-right{display:flex;align-items:center;gap:1rem}
.topbar-date{color:var(--g400);font-size:.8rem}
.notif-btn{position:relative;width:32px;height:32px;background:rgba(255,255,255,.05);border-radius:8px;display:flex;align-items:center;justify-content:center;cursor:pointer;border:none}
.notif-btn svg{width:16px;height:16px;stroke:var(--g400)}
.notif-dot{position:absolute;top:4px;right:4px;width:7px;height:7px;background:var(--orange);border-radius:50%;border:2px solid var(--navy);display:none}
.notif-dot.show{display:block}

/* ===== CONTENT ===== */
.content{padding:1.2rem 1.5rem}
.loading{display:flex;flex-direction:column;align-items:center;justify-content:center;height:60vh;gap:1rem;color:var(--g400)}
.spinner{width:32px;height:32px;border:3px solid rgba(255,255,255,.1);border-top-color:var(--teal-l);border-radius:50%;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

/* ===== KPI CARDS ===== */
.kpi-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:.8rem;margin-bottom:1.2rem}
.kpi{background:var(--navy);border:1px solid rgba(255,255,255,.06);border-radius:10px;padding:1rem 1.2rem;transition:border-color .2s}
.kpi:hover{border-color:rgba(13,148,136,.3)}
.kpi-top{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:.6rem}
.kpi-icon{width:36px;height:36px;border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:1rem}
.kpi-icon.teal{background:rgba(13,148,136,.15)}
.kpi-icon.green{background:rgba(34,197,94,.15)}
.kpi-icon.orange{background:rgba(249,115,22,.15)}
.kpi-icon.red{background:rgba(239,68,68,.15)}
.kpi-icon.blue{background:rgba(59,130,246,.15)}
.kpi-change{font-size:.65rem;font-weight:600;padding:2px 6px;border-radius:100px}
.kpi-change.up{background:rgba(34,197,94,.1);color:var(--green)}
.kpi-change.down{background:rgba(239,68,68,.1);color:var(--red)}
.kpi-value{font-size:1.6rem;font-weight:800;margin-bottom:.2rem;line-height:1.2}
.kpi-label{color:var(--g400);font-size:.75rem}

/* ===== PANELS ===== */
.grid-2{display:grid;grid-template-columns:2fr 1fr;gap:.8rem;margin-bottom:1.2rem}
.grid-2.even{grid-template-columns:1fr 1fr}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:.8rem;margin-bottom:1.2rem}
.panel{background:var(--navy);border:1px solid rgba(255,255,255,.06);border-radius:10px;padding:1rem 1.2rem;margin-bottom:1.2rem}
.panel:last-child{margin-bottom:0}
.panel-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:.8rem}
.panel-title{font-size:.9rem;font-weight:700}
.panel-tabs{display:flex;gap:.4rem}
.tab-btn{padding:3px 10px;border-radius:6px;font-size:.7rem;font-weight:500;cursor:pointer;color:var(--g400);background:transparent;border:1px solid transparent;transition:all .15s}
.tab-btn.active{background:rgba(13,148,136,.15);color:var(--teal-l);border-color:rgba(13,148,136,.3)}
.tab-btn:hover:not(.active){color:var(--w)}

/* ===== CHARTS ===== */
.chart-wrap{position:relative;height:240px}
.chart-wrap.short{height:180px}

/* ===== TABLES ===== */
.table-wrap{overflow-x:auto}
table{width:100%;border-collapse:collapse}
th{text-align:left;padding:.55rem .8rem;color:var(--g500);font-size:.65rem;text-transform:uppercase;letter-spacing:1px;font-weight:600;border-bottom:1px solid rgba(255,255,255,.06);white-space:nowrap}
td{padding:.6rem .8rem;font-size:.8rem;color:var(--g400);border-bottom:1px solid rgba(255,255,255,.03);white-space:nowrap}
tr:hover td{background:rgba(255,255,255,.02)}
.td-name{color:var(--w);font-weight:600}

/* ===== BADGES ===== */
.badge{display:inline-block;padding:2px 8px;border-radius:100px;font-size:.68rem;font-weight:600;white-space:nowrap}
.badge.green{background:rgba(34,197,94,.15);color:var(--green)}
.badge.orange{background:rgba(249,115,22,.15);color:var(--orange)}
.badge.red{background:rgba(239,68,68,.15);color:var(--red)}
.badge.teal{background:rgba(13,148,136,.15);color:var(--teal-l)}
.badge.blue{background:rgba(59,130,246,.15);color:#3b82f6}

/* ===== TANK BARS ===== */
.tank-bar{display:flex;align-items:center;gap:6px}
.tank-bg{width:70px;height:5px;background:rgba(255,255,255,.08);border-radius:3px;overflow:hidden}
.tank-fill{height:100%;border-radius:3px;transition:width .6s}
.tank-pct{font-size:.7rem;font-weight:600;width:32px;text-align:right}

/* ===== ALERTS ===== */
.alert-item{display:flex;align-items:flex-start;gap:8px;padding:.6rem 0;border-bottom:1px solid rgba(255,255,255,.04)}
.alert-item:last-child{border-bottom:none}
.alert-dot{width:7px;height:7px;border-radius:50%;margin-top:5px;flex-shrink:0}
.alert-dot.critical{background:var(--red)}
.alert-dot.warning{background:var(--orange)}
.alert-dot.info{background:var(--teal-l)}
.alert-text{font-size:.78rem;color:var(--g400);line-height:1.5}
.alert-text strong{color:var(--w);font-weight:600}
.alert-time{color:var(--g500);font-size:.65rem;margin-top:2px}

/* ===== PREDICTION CARDS ===== */
.pred-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:.8rem;margin-bottom:1.2rem}
.pred-card{background:var(--navy);border:1px solid rgba(255,255,255,.06);border-radius:10px;padding:1rem 1.2rem;position:relative;overflow:hidden}
.pred-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px}
.pred-card.magna::before{background:linear-gradient(90deg,#22c55e,#4ade80)}
.pred-card.premium::before{background:linear-gradient(90deg,#ef4444,#f87171)}
.pred-card.diesel::before{background:linear-gradient(90deg,#eab308,#facc15)}
.pred-station{color:var(--g400);font-size:.7rem;margin-bottom:.3rem}
.pred-fuel{color:var(--w);font-weight:700;font-size:.9rem;margin-bottom:.15rem}
.pred-amount{color:var(--teal-l);font-size:1.3rem;font-weight:800;margin-bottom:.4rem}
.pred-when{display:flex;align-items:center;gap:4px;color:var(--g400);font-size:.75rem;flex-wrap:wrap}
.pred-conf{margin-top:.5rem}
.pred-conf-label{color:var(--g500);font-size:.65rem;margin-bottom:2px}
.pred-conf-bar{width:100%;height:3px;background:rgba(255,255,255,.08);border-radius:2px;overflow:hidden}
.pred-conf-fill{height:100%;background:var(--teal);border-radius:2px}

/* ===== REPORT ROWS ===== */
.report-row{display:flex;align-items:center;justify-content:space-between;padding:.8rem 1rem;background:var(--navy);border:1px solid rgba(255,255,255,.06);border-radius:8px;margin-bottom:.4rem;transition:border-color .15s}
.report-row:hover{border-color:rgba(13,148,136,.3)}
.report-left{display:flex;align-items:center;gap:10px;min-width:0}
.report-icon{width:32px;height:32px;background:rgba(13,148,136,.1);border-radius:6px;display:flex;align-items:center;justify-content:center;font-size:.85rem;flex-shrink:0}
.report-name{color:var(--w);font-weight:600;font-size:.82rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.report-desc{color:var(--g500);font-size:.7rem;margin-top:1px}
.report-right{display:flex;align-items:center;gap:.6rem;flex-shrink:0}
.report-date{color:var(--g500);font-size:.75rem}

/* ===== BUTTONS ===== */
.btn{padding:5px 12px;border-radius:6px;font-size:.72rem;font-weight:600;border:none;cursor:pointer;transition:all .15s;font-family:inherit}
.btn-teal{background:rgba(13,148,136,.15);color:var(--teal-l)}
.btn-teal:hover{background:rgba(13,148,136,.25)}
.btn-primary{background:var(--teal);color:var(--w);padding:8px 16px;font-size:.8rem}
.btn-primary:hover{background:var(--teal-l)}
.btn-orange{background:rgba(249,115,22,.15);color:var(--orange)}
.btn-orange:hover{background:rgba(249,115,22,.25)}
.btn-outline{background:transparent;border:1px solid rgba(255,255,255,.12);color:var(--g400)}
.btn-outline:hover{border-color:rgba(255,255,255,.25);color:var(--w)}

/* ===== FORMS ===== */
.form-group{margin-bottom:1rem}
.form-label{display:block;color:var(--g400);font-size:.75rem;font-weight:600;margin-bottom:.3rem;text-transform:uppercase;letter-spacing:.5px}
.form-input,.form-select{width:100%;padding:.6rem .8rem;background:var(--navy2);border:1px solid rgba(255,255,255,.1);border-radius:8px;color:var(--w);font-size:.85rem;font-family:inherit;outline:none;transition:border-color .2s}
.form-input:focus,.form-select:focus{border-color:var(--teal)}
.form-select{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 10px center}
.form-select option{background:var(--navy);color:var(--w)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
.form-msg{padding:.6rem 1rem;border-radius:8px;font-size:.8rem;margin-bottom:1rem;display:none}
.form-msg.success{display:block;background:rgba(34,197,94,.1);border:1px solid rgba(34,197,94,.2);color:var(--green)}
.form-msg.error{display:block;background:rgba(239,68,68,.1);border:1px solid rgba(239,68,68,.2);color:var(--red)}

/* ===== MODAL ===== */
.modal-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,.6);z-index:100;align-items:center;justify-content:center;backdrop-filter:blur(4px)}
.modal-overlay.open{display:flex}
.modal-content{background:var(--navy);border:1px solid rgba(255,255,255,.1);border-radius:12px;padding:1.5rem;width:90%;max-width:500px;max-height:80vh;overflow-y:auto}
.modal-title{font-size:1rem;font-weight:700;margin-bottom:1rem}
.modal-close{float:right;background:none;border:none;color:var(--g400);cursor:pointer;font-size:1.2rem}

/* ===== RESPONSIVE ===== */
@media(max-width:1100px){.kpi-grid{grid-template-columns:repeat(2,1fr)}.pred-grid{grid-template-columns:1fr}}
@media(max-width:768px){
  .sidebar{transform:translateX(-100%)}
  .sidebar.open{transform:translateX(0)}
  .main{margin-left:0}
  .menu-toggle{display:block}
  .grid-2,.grid-2.even{grid-template-columns:1fr}
  .kpi-grid{grid-template-columns:1fr 1fr}
  .content{padding:1rem}
}

/* ===== LIGHT THEME ===== */
[data-theme="light"]{
  --navy:#ffffff;--navy2:#f8fafc;--navy3:#f1f5f9;
  --w:#1e293b;
  --g50:#1e293b;--g100:#334155;--g200:#475569;--g300:#64748b;
  --g400:#475569;--g500:#64748b;--g600:#94a3b8;--g800:#f1f5f9;
}
[data-theme="light"] body,
body[data-theme="light"]{background:#f0f4f8;color:#1e293b}
[data-theme="light"] .sidebar{border-right-color:rgba(0,0,0,.08)}
[data-theme="light"] .sidebar-logo{border-bottom-color:rgba(0,0,0,.08)}
[data-theme="light"] .sidebar-user{border-top-color:rgba(0,0,0,.08)}
[data-theme="light"] .topbar{border-bottom-color:rgba(0,0,0,.08)}
[data-theme="light"] .nav-item{color:var(--g400)}
[data-theme="light"] .nav-item:hover{background:rgba(0,0,0,.04);color:#0f172a}
[data-theme="light"] .nav-item.active{background:rgba(13,148,136,.08);color:var(--teal)}
[data-theme="light"] .kpi{border-color:rgba(0,0,0,.08);box-shadow:0 1px 3px rgba(0,0,0,.06)}
[data-theme="light"] .kpi:hover{border-color:rgba(13,148,136,.3)}
[data-theme="light"] .panel{border-color:rgba(0,0,0,.08);box-shadow:0 1px 3px rgba(0,0,0,.06)}
[data-theme="light"] .report-row{border-color:rgba(0,0,0,.08);box-shadow:0 1px 2px rgba(0,0,0,.04)}
[data-theme="light"] .report-row:hover{border-color:rgba(13,148,136,.3)}
[data-theme="light"] .pred-card{border-color:rgba(0,0,0,.08);box-shadow:0 1px 3px rgba(0,0,0,.06)}
[data-theme="light"] th{border-bottom-color:rgba(0,0,0,.1)}
[data-theme="light"] td{border-bottom-color:rgba(0,0,0,.04)}
[data-theme="light"] tr:hover td{background:rgba(0,0,0,.02)}
[data-theme="light"] .form-input,
[data-theme="light"] .form-select{background:var(--navy2);border-color:rgba(0,0,0,.12);color:#1e293b}
[data-theme="light"] .form-select option{background:#fff;color:#1e293b}
[data-theme="light"] .form-select{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23475569' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E")}
[data-theme="light"] .btn-outline{border-color:rgba(0,0,0,.15);color:var(--g400)}
[data-theme="light"] .btn-outline:hover{border-color:rgba(0,0,0,.3);color:#0f172a}
[data-theme="light"] .notif-btn{background:rgba(0,0,0,.05)}
[data-theme="light"] .notif-dot{border-color:#fff}
[data-theme="light"] .tank-bg{background:rgba(0,0,0,.08)}
[data-theme="light"] .spinner{border-color:rgba(0,0,0,.1);border-top-color:var(--teal)}
[data-theme="light"] .modal-overlay{background:rgba(0,0,0,.35)}
[data-theme="light"] .modal-content{border-color:rgba(0,0,0,.1);box-shadow:0 20px 60px rgba(0,0,0,.15)}
[data-theme="light"] .logo-text{color:#0f172a}
[data-theme="light"] .user-name{color:#0f172a}
[data-theme="light"] .page-title{color:#0f172a}
[data-theme="light"] .kpi-value{color:#0f172a}
[data-theme="light"] .panel-title{color:#0f172a}
[data-theme="light"] .td-name{color:#0f172a}
[data-theme="light"] .report-name{color:#0f172a}
[data-theme="light"] .pred-fuel{color:#0f172a}
[data-theme="light"] .alert-text strong{color:#0f172a}

/* Theme toggle button */
.theme-toggle{width:32px;height:32px;background:rgba(255,255,255,.05);border-radius:8px;display:flex;align-items:center;justify-content:center;cursor:pointer;border:none;transition:all .15s}
.theme-toggle:hover{background:rgba(255,255,255,.1)}
.theme-toggle svg{width:16px;height:16px;stroke:var(--g400);fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
[data-theme="light"] .theme-toggle{background:rgba(0,0,0,.05)}
[data-theme="light"] .theme-toggle:hover{background:rgba(0,0,0,.1)}

/* ===== ANIMATION ===== */
@keyframes fadeUp{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}
.fade-in{animation:fadeUp .3s ease-out forwards}



/* Profile dropdown */
.sidebar-user{cursor:pointer;position:relative;transition:background .2s}
.sidebar-user:hover{background:rgba(255,255,255,.05)}
.profile-chevron{width:16px;height:16px;flex-shrink:0;opacity:.4;transition:transform .2s,opacity .2s;margin-left:auto}
.sidebar-user:hover .profile-chevron{opacity:.7}
.sidebar-user.open .profile-chevron{transform:rotate(180deg);opacity:.7}
.profile-menu{display:none;position:absolute;bottom:calc(100% + 8px);left:12px;right:12px;background:var(--navy2);border:1px solid rgba(255,255,255,.1);border-radius:10px;padding:6px;box-shadow:0 8px 32px rgba(0,0,0,.4);z-index:100}
.sidebar-user.open .profile-menu{display:block}
.profile-menu-header{padding:10px 12px 8px;font-size:.7rem;color:var(--g500);border-bottom:1px solid rgba(255,255,255,.06);margin-bottom:4px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.profile-menu-item{display:flex;align-items:center;gap:10px;padding:8px 12px;border-radius:6px;color:var(--g300);font-size:.82rem;text-decoration:none;cursor:pointer;transition:background .15s}
.profile-menu-item:hover{background:rgba(255,255,255,.06);color:var(--w)}
.profile-menu-item svg{width:16px;height:16px;flex-shrink:0}
.profile-menu-item.logout{color:var(--red)}
.profile-menu-item.logout:hover{background:rgba(239,68,68,.1)}
.profile-menu-divider{height:1px;background:rgba(255,255,255,.06);margin:4px 0}