:root{
    --bg:#0a1023;
    --bg-soft:#121b37;
    --panel:rgba(14,23,49,.78);
    --panel-solid:#18213f;
    --panel-soft:rgba(28,40,76,.9);
    --line:rgba(173,194,255,.14);
    --line-strong:rgba(173,194,255,.28);
    --text:#f8fbff;
    --text-soft:#dbe7ff;
    --muted:#94a8d6;
    --accent:#6d5dfc;
    --accent-2:#00d4ff;
    --accent-3:#ff4fd8;
    --success:#2dd881;
    --warning:#ffb020;
    --danger:#ff5c7c;
    --info:#2f89fc;
    --shadow:0 25px 60px rgba(3,10,28,.38);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
    background:
        radial-gradient(circle at 0% 0%, rgba(109,93,252,.32), transparent 28%),
        radial-gradient(circle at 100% 10%, rgba(0,212,255,.22), transparent 24%),
        radial-gradient(circle at 50% 100%, rgba(255,79,216,.16), transparent 26%),
        linear-gradient(160deg, #050814 0%, #0b1431 45%, #121c3d 100%);
    color:var(--text);
    min-height:100vh;
    font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
}
a{text-decoration:none}
.app-shell{display:grid;grid-template-columns:290px 1fr;min-height:100vh}
.sidebar{
    background:linear-gradient(180deg, rgba(7,13,31,.95), rgba(17,26,57,.88));
    border-right:1px solid var(--line);
    padding:24px 18px;
    position:sticky;
    top:0;
    height:100vh;
    overflow:auto;
    backdrop-filter:blur(20px);
}
.brand-box{
    display:flex;
    align-items:center;
    gap:12px;
    padding:18px;
    border:1px solid var(--line);
    background:linear-gradient(135deg, rgba(109,93,252,.22), rgba(0,212,255,.14));
    border-radius:24px;
    margin-bottom:22px;
    box-shadow:var(--shadow);
}
.brand-title{font-weight:800;font-size:1.2rem;letter-spacing:.01em}
.brand-subtitle{color:var(--text-soft);font-size:.86rem}
.nav-section{
    margin-top:18px;
    margin-bottom:8px;
    color:#bfd0ff;
    font-size:.78rem;
    text-transform:uppercase;
    letter-spacing:.12em;
    padding-left:10px;
}
.sidebar .nav-link{
    color:#eaf2ff;
    border-radius:16px;
    padding:11px 14px;
    font-weight:600;
    transition:all .2s ease;
}
.sidebar .nav-link:hover,
.sidebar .nav-link.active{
    background:linear-gradient(135deg, rgba(109,93,252,.42), rgba(0,212,255,.20));
    color:#fff;
    transform:translateX(4px);
    box-shadow:0 12px 24px rgba(3,10,28,.18);
}
.main-content{padding:28px 28px 18px}
.topbar{
    display:flex;
    justify-content:space-between;
    align-items:center;
    margin-bottom:20px;
    gap:18px;
    padding:18px 22px;
    border-radius:24px;
    background:linear-gradient(135deg, rgba(16,25,54,.86), rgba(31,45,89,.74));
    border:1px solid var(--line);
    box-shadow:var(--shadow);
}
.topbar-actions{display:flex;align-items:center;gap:12px}
.page-title{font-size:1.92rem;font-weight:800}
.text-muted,.form-text{color:var(--muted)!important}
.panel-card,.card{
    background:linear-gradient(180deg, rgba(17,27,56,.88), rgba(13,21,44,.82));
    border:1px solid var(--line);
    border-radius:24px;
    box-shadow:var(--shadow);
    overflow:hidden;
}
.card .card-header{
    border-bottom:1px solid var(--line);
    background:linear-gradient(135deg, rgba(255,255,255,.03), rgba(255,255,255,.01));
    color:#fff;
    padding:18px 22px;
}
.card .card-body{padding:22px}
.table{
    --bs-table-bg:transparent;
    --bs-table-color:var(--text);
    --bs-table-border-color:rgba(173,194,255,.12);
    margin-bottom:0;
}
.table thead th{
    color:#c9d8ff;
    font-size:.78rem;
    text-transform:uppercase;
    letter-spacing:.08em;
    border-bottom-width:1px;
}
.table tbody tr:hover td{background:rgba(255,255,255,.02)}
.form-label{font-weight:700;color:#edf4ff;margin-bottom:.45rem}
.form-control,.form-select,.form-check-input{
    background:rgba(7,13,31,.82);
    border-color:rgba(173,194,255,.18);
    color:var(--text);
    border-radius:16px;
    min-height:48px;
}
.form-control::placeholder{color:#7f93bf}
.form-control:focus,.form-select:focus{
    background:rgba(7,13,31,.92);
    color:#fff;
    border-color:rgba(0,212,255,.55);
    box-shadow:0 0 0 .2rem rgba(0,212,255,.14);
}
textarea.form-control{min-height:120px}
.form-check-input{min-height:auto;width:1.15rem;height:1.15rem}
.form-check-input:checked{
    background-color:var(--accent);
    border-color:var(--accent);
}
.btn{
    border-radius:14px;
    font-weight:700;
    padding:.7rem 1rem;
    border-width:1px;
}
.btn-primary{
    background:linear-gradient(135deg, #6d5dfc, #8b5cf6);
    border-color:transparent;
    box-shadow:0 12px 24px rgba(109,93,252,.28);
}
.btn-primary:hover{filter:brightness(1.06)}
.btn-success{
    background:linear-gradient(135deg, #19c37d, #2dd881);
    border-color:transparent;
    color:#04130e;
}
.btn-warning{
    background:linear-gradient(135deg, #ff9b2f, #ffb020);
    border-color:transparent;
    color:#321b00;
}
.btn-danger{
    background:linear-gradient(135deg, #ff5c7c, #ff7a59);
    border-color:transparent;
}
.btn-outline-secondary,
.btn-outline-light{
    color:#f4f7ff;
    border-color:rgba(173,194,255,.22);
    background:rgba(255,255,255,.02);
}
.btn-outline-secondary:hover,
.btn-outline-light:hover{
    background:rgba(255,255,255,.08);
    border-color:rgba(173,194,255,.42);
    color:#fff;
}
.metric{
    padding:20px;
    border-radius:24px;
    background:linear-gradient(145deg, rgba(18,29,60,.96), rgba(26,39,82,.9));
    border:1px solid var(--line);
    height:100%;
    box-shadow:var(--shadow);
    position:relative;
    overflow:hidden;
}
.metric::after{
    content:"";
    position:absolute;
    inset:auto -20px -40px auto;
    width:110px;
    height:110px;
    background:radial-gradient(circle, rgba(0,212,255,.25), transparent 65%);
}
.metric .label{color:#bfd0ff;font-size:.86rem;font-weight:600}
.metric .value{font-size:1.8rem;font-weight:800;margin-top:8px;line-height:1.15}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.login-shell{
    min-height:100vh;
    display:grid;
    place-items:center;
    background:
        radial-gradient(circle at 20% 20%, rgba(0,212,255,.28), transparent 28%),
        radial-gradient(circle at 80% 0%, rgba(255,79,216,.26), transparent 22%),
        linear-gradient(160deg,#081127 0%,#101d43 40%,#1b2554 100%);
    padding:24px;
}
.login-card{
    width:min(460px,100%);
    background:linear-gradient(180deg, rgba(13,20,43,.9), rgba(20,32,68,.88));
    border:1px solid var(--line-strong);
    border-radius:28px;
    padding:32px;
    backdrop-filter:blur(18px);
    box-shadow:var(--shadow);
}
.footer-note{
    margin-top:24px;
    color:#d7e4ff;
    font-size:.88rem;
    text-align:center;
}
.small-help{font-size:.85rem;color:#b7c9f6}
.alert{
    border:1px solid rgba(255,255,255,.12);
    border-radius:18px;
}
.badge.text-bg-success{background:rgba(45,216,129,.18)!important;color:#d6ffe9!important}
.badge.text-bg-warning{background:rgba(255,176,32,.18)!important;color:#ffe5ab!important}
.badge.text-bg-danger{background:rgba(255,92,124,.18)!important;color:#ffd3dd!important}
.badge.text-bg-info{background:rgba(47,137,252,.18)!important;color:#d7e8ff!important}
.badge.text-bg-secondary{background:rgba(173,194,255,.14)!important;color:#eef4ff!important}
.reservation-toolbar .card-body{display:grid;gap:18px}
.reservation-title-block h2{
    font-size:1.15rem;
    margin:0 0 6px;
    font-weight:800;
}
.status-legend{
    display:flex;
    flex-wrap:wrap;
    gap:10px;
}
.legend-chip{
    display:inline-flex;
    align-items:center;
    gap:8px;
    padding:10px 14px;
    border-radius:999px;
    background:rgba(255,255,255,.04);
    color:#eef4ff;
    border:1px solid rgba(255,255,255,.08);
    font-weight:600;
}
.legend-dot{
    width:12px;
    height:12px;
    border-radius:999px;
    box-shadow:0 0 0 4px rgba(255,255,255,.06);
}
.legend-dot.available{background:var(--success)}
.legend-dot.occupied{background:var(--danger)}
.legend-dot.cleaning{background:var(--info)}
.legend-dot.maintenance{background:var(--warning)}
.room-filter-form .btn{width:100%}
.room-board{
    display:grid;
    grid-template-columns:repeat(auto-fit, minmax(210px, 1fr));
    gap:18px;
}
.room-tile{
    position:relative;
    border:none;
    border-radius:24px;
    padding:18px;
    text-align:left;
    color:#fff;
    min-height:188px;
    box-shadow:var(--shadow);
    overflow:hidden;
    transition:transform .18s ease, box-shadow .18s ease, filter .18s ease;
}
.room-tile:hover{
    transform:translateY(-4px);
    filter:brightness(1.03);
    box-shadow:0 30px 60px rgba(2,8,23,.36);
}
.room-tile::after{
    content:"";
    position:absolute;
    right:-16px;
    top:-16px;
    width:120px;
    height:120px;
    border-radius:999px;
    background:rgba(255,255,255,.08);
}
.room-tile.available{background:linear-gradient(135deg, #0e6f4b, #20b56d)}
.room-tile.occupied{background:linear-gradient(135deg, #b52144, #ff5c7c)}
.room-tile.cleaning{background:linear-gradient(135deg, #1d5cbf, #2f89fc)}
.room-tile.maintenance{background:linear-gradient(135deg, #d16a09, #ffb020)}
.room-tile.is-selected{
    outline:3px solid rgba(255,255,255,.92);
    outline-offset:3px;
}
.room-pill{
    display:inline-flex;
    align-items:center;
    gap:8px;
    padding:8px 12px;
    border-radius:999px;
    background:rgba(255,255,255,.14);
    border:1px solid rgba(255,255,255,.12);
    font-size:.8rem;
    font-weight:800;
    letter-spacing:.03em;
    margin-bottom:14px;
}
.room-name{
    font-size:1.18rem;
    font-weight:800;
    margin-bottom:6px;
    position:relative;
    z-index:1;
}
.room-meta{
    font-size:.88rem;
    color:rgba(255,255,255,.9);
    margin-bottom:12px;
    position:relative;
    z-index:1;
}
.room-detail{
    font-size:.9rem;
    color:rgba(255,255,255,.95);
    min-height:44px;
    margin-bottom:16px;
    position:relative;
    z-index:1;
}
.room-footer{
    display:flex;
    justify-content:space-between;
    gap:12px;
    align-items:flex-end;
    position:relative;
    z-index:1;
    font-weight:700;
}
.room-footer small{
    display:block;
    font-size:.76rem;
    opacity:.85;
}
.room-action{
    font-size:.84rem;
    text-transform:uppercase;
    letter-spacing:.08em;
    opacity:.92;
}
.reservation-layout{align-items:start}
.selected-room-banner{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
    padding:14px 16px;
    border-radius:18px;
    background:linear-gradient(135deg, rgba(109,93,252,.2), rgba(0,212,255,.16));
    border:1px solid rgba(255,255,255,.08);
    margin-bottom:18px;
}
.selected-room-banner strong{display:block;font-size:1rem}
.selected-room-banner span{color:#e3eeff}
.room-feedback{
    margin-top:14px;
    color:#dbe7ff;
    font-size:.9rem;
    min-height:22px;
}
.section-subtitle{
    color:#cbd9ff;
    margin-top:4px;
    margin-bottom:0;
}
.kpi-card .card-body{display:flex;flex-direction:column;gap:8px}
.kpi-value{font-size:1.7rem;font-weight:800}
.table-responsive{border-radius:20px}
.quick-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px}
.simple-stack{display:grid;gap:18px}
@media (max-width: 991px){
    .app-shell{grid-template-columns:1fr}
    .sidebar{position:relative;height:auto}
    .grid-2{grid-template-columns:1fr}
    .topbar{flex-direction:column;align-items:flex-start}
}
@media (max-width: 767px){
    .main-content{padding:18px}
    .card .card-body,.card .card-header{padding:18px}
    .topbar{padding:16px}
    .room-board{grid-template-columns:1fr}
    .selected-room-banner{flex-direction:column;align-items:flex-start}
}