/* ATRIUM — meeting room booking. Design language: office door-plate / signage,
   deep teal accent, Archivo + IBM Plex type system. See README for the rationale. */

@font-face{font-family:'AtriumDisplay';font-style:normal;font-weight:800;font-display:swap;unicode-range:U+0102-0103,U+0110-0111,U+0128-0129,U+0168-0169,U+01A0-01A1,U+01AF-01B0,U+0300-0301,U+0303-0304,U+0308-0309,U+0323,U+0329,U+1EA0-1EF9,U+20AB;src:url(../fonts/archivo-800-vi.woff2) format('woff2');}
@font-face{font-family:'AtriumDisplay';font-style:normal;font-weight:800;font-display:swap;unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD;src:url(../fonts/archivo-800-la.woff2) format('woff2');}
@font-face{font-family:'AtriumSans';font-style:normal;font-weight:400;font-display:swap;unicode-range:U+0102-0103,U+0110-0111,U+0128-0129,U+0168-0169,U+01A0-01A1,U+01AF-01B0,U+0300-0301,U+0303-0304,U+0308-0309,U+0323,U+0329,U+1EA0-1EF9,U+20AB;src:url(../fonts/plexsans-400-vi.woff2) format('woff2');}
@font-face{font-family:'AtriumSans';font-style:normal;font-weight:400;font-display:swap;unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD;src:url(../fonts/plexsans-400-la.woff2) format('woff2');}
@font-face{font-family:'AtriumSans';font-style:normal;font-weight:600;font-display:swap;unicode-range:U+0102-0103,U+0110-0111,U+0128-0129,U+0168-0169,U+01A0-01A1,U+01AF-01B0,U+0300-0301,U+0303-0304,U+0308-0309,U+0323,U+0329,U+1EA0-1EF9,U+20AB;src:url(../fonts/plexsans-600-vi.woff2) format('woff2');}
@font-face{font-family:'AtriumSans';font-style:normal;font-weight:600;font-display:swap;unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD;src:url(../fonts/plexsans-600-la.woff2) format('woff2');}
@font-face{font-family:'AtriumMono';font-style:normal;font-weight:400;font-display:swap;unicode-range:U+0102-0103,U+0110-0111,U+0128-0129,U+0168-0169,U+01A0-01A1,U+01AF-01B0,U+0300-0301,U+0303-0304,U+0308-0309,U+0323,U+0329,U+1EA0-1EF9,U+20AB;src:url(../fonts/plexmono-400-vi.woff2) format('woff2');}
@font-face{font-family:'AtriumMono';font-style:normal;font-weight:400;font-display:swap;unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD;src:url(../fonts/plexmono-400-la.woff2) format('woff2');}
@font-face{font-family:'AtriumMono';font-style:normal;font-weight:500;font-display:swap;unicode-range:U+0102-0103,U+0110-0111,U+0128-0129,U+0168-0169,U+01A0-01A1,U+01AF-01B0,U+0300-0301,U+0303-0304,U+0308-0309,U+0323,U+0329,U+1EA0-1EF9,U+20AB;src:url(../fonts/plexmono-500-vi.woff2) format('woff2');}
@font-face{font-family:'AtriumMono';font-style:normal;font-weight:500;font-display:swap;unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD;src:url(../fonts/plexmono-500-la.woff2) format('woff2');}

:root{
  color-scheme: light dark;
  --bg:#EDF1F0; --surface:#FFFFFF; --surface-2:#F4F7F6; --surface-inset:#E7ECEA;
  --border:#D7DFDC; --border-strong:#C3CDC9;
  --ink:#16232A; --ink-soft:#57696D; --ink-faint:#8B9B9C;
  --accent:#1B6E75; --accent-strong:#124F54; --accent-soft:#DCEEEC; --accent-ink:#FFFFFF;
  --ok:#2F9161; --ok-soft:#E3F3E9;
  --danger:#C6473F; --danger-soft:#FBE7E5;
  --warn:#B87A1F; --warn-soft:#FBF0DD;
  --shadow-sm: 0 1px 2px rgba(22,35,42,.07);
  --shadow-md: 0 10px 28px -14px rgba(22,35,42,.28);
  --font-display:'AtriumDisplay','Archivo Narrow',Arial,sans-serif;
  --font-body:'AtriumSans',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;
  --font-mono:'AtriumMono','SFMono-Regular',Consolas,'Liberation Mono',monospace;
  --radius-sm:8px; --radius-md:12px; --radius-lg:18px;
}
@media (prefers-color-scheme: dark){
  :root{
    --bg:#0E1516; --surface:#141F1F; --surface-2:#1A2726; --surface-inset:#0F1919;
    --border:#283A38; --border-strong:#33473F;
    --ink:#E7EEEC; --ink-soft:#93A6A3; --ink-faint:#5E7472;
    --accent:#4FBDB4; --accent-strong:#7ED4CC; --accent-soft:rgba(79,189,180,.16); --accent-ink:#08201E;
    --ok:#57C68C; --ok-soft:rgba(87,198,140,.16);
    --danger:#E2685F; --danger-soft:rgba(226,104,95,.16);
    --warn:#D9A23D; --warn-soft:rgba(217,162,61,.16);
    --shadow-sm: 0 1px 2px rgba(0,0,0,.35);
    --shadow-md: 0 14px 32px -16px rgba(0,0,0,.6);
  }
}

*{box-sizing:border-box}
html,body{background:var(--bg);margin:0}
body{font-family:var(--font-body);color:var(--ink);font-size:15px;line-height:1.55;-webkit-font-smoothing:antialiased}
h1,h2,h3{font-family:var(--font-display);font-weight:800;letter-spacing:-.01em;text-wrap:balance;margin:0}
p{margin:0}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}
button,input,select{font:inherit;color:inherit}
button{cursor:pointer}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
@media (prefers-reduced-motion: reduce){*{animation-duration:.001ms !important;transition-duration:.001ms !important}}

.app{max-width:1180px;margin-inline:auto;padding:28px 20px 64px;display:flex;flex-direction:column;gap:20px}

/* ---------- topbar ---------- */
.topbar{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;padding-bottom:4px}
.brand{display:flex;align-items:center;gap:12px}
.brand a{color:inherit;text-decoration:none;display:flex;align-items:center;gap:12px}
.plaque{width:42px;height:42px;flex:none;border-radius:10px;background:linear-gradient(155deg,var(--accent),var(--accent-strong));display:flex;align-items:center;justify-content:center;color:#fff;box-shadow:var(--shadow-sm)}
.brand-eyebrow{font-size:11px;letter-spacing:.09em;text-transform:uppercase;color:var(--ink-soft);font-weight:600}
.brand-name{font-size:21px;display:flex;align-items:baseline;gap:8px}
.brand-name-sub{font-family:var(--font-body);font-weight:600;font-size:13px;color:var(--ink-soft);letter-spacing:0}
.topbar-actions{display:flex;align-items:center;gap:12px}
.admin-link{font-size:12.5px;font-weight:700;color:var(--ink-soft);text-decoration:none;border:1px solid var(--border);padding:8px 13px;border-radius:999px}
.admin-link:hover{color:var(--ink);border-color:var(--border-strong)}

/* ---------- cards ---------- */
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);padding:20px}
.hint{color:var(--ink-soft);font-size:13px;margin-top:4px}

/* ---------- usage strip ---------- */
.usage-strip-inner{display:flex;flex-wrap:wrap;gap:24px;align-items:center;justify-content:space-between}
.usage-identity{display:flex;align-items:center;gap:12px;min-width:220px}
.avatar{width:44px;height:44px;border-radius:50%;background:var(--surface-inset);border:1px solid var(--border);display:flex;align-items:center;justify-content:center;font-family:var(--font-display);font-weight:800;font-size:15px;color:var(--accent-strong);flex:none}
.usage-role-label{display:block;font-size:11px;text-transform:uppercase;letter-spacing:.08em;color:var(--ink-faint);font-weight:600;margin-bottom:3px}
.role-select{border:1px solid var(--border);background:var(--surface);border-radius:var(--radius-sm);padding:7px 10px;font-weight:700;font-size:14.5px;min-width:220px}
.usage-meter{flex:1;min-width:260px}
.usage-meter-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:8px}
.usage-meter-title{font-weight:600;font-size:13px;color:var(--ink-soft)}
.usage-track{height:9px;border-radius:999px;background:var(--surface-inset);overflow:hidden}
.usage-fill{height:100%;border-radius:999px;background:var(--ok);transition:width .35s ease}
.usage-fill.is-warn{background:var(--warn)}
.usage-fill.is-danger{background:var(--danger)}
.usage-figures{margin-top:7px;font-size:13px;color:var(--ink-soft);display:flex;gap:10px;flex-wrap:wrap}
.usage-figures .mono{color:var(--ink);font-weight:600}
.badge{display:inline-flex;align-items:center;gap:5px;padding:4px 10px;border-radius:999px;font-size:11.5px;font-weight:700;letter-spacing:.02em;white-space:nowrap}
.badge-ok{background:var(--ok-soft);color:var(--ok)}
.badge-warn{background:var(--warn-soft);color:var(--warn)}
.badge-danger{background:var(--danger-soft);color:var(--danger)}

/* ---------- controls bar ---------- */
.controls-bar{display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between}
.room-tabs{display:flex;flex-wrap:wrap;gap:8px}
.room-tab{border:1px solid var(--border);background:var(--surface-2);border-radius:var(--radius-md);padding:8px 14px;text-align:left;transition:border-color .15s ease,background .15s ease}
.room-tab-name{display:block;font-weight:700;font-size:14px}
.room-tab-meta{display:block;font-size:11.5px;color:var(--ink-soft);margin-top:1px}
.room-tab.is-active{border-color:var(--accent);background:var(--accent-soft)}
.room-tab.is-active .room-tab-meta{color:var(--accent-strong)}
.room-tab:hover{border-color:var(--border-strong)}

.date-nav{display:flex;align-items:center;gap:6px}
.icon-btn{width:36px;height:36px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--border);background:var(--surface-2);border-radius:var(--radius-sm);color:var(--ink-soft);flex:none;transition:border-color .15s ease,color .15s ease}
.icon-btn:hover{color:var(--ink);border-color:var(--border-strong)}
.icon-btn-danger:hover{color:var(--danger);border-color:var(--danger)}
.date-display{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--border);background:var(--surface-2);border-radius:var(--radius-sm);padding:8px 14px;font-weight:700;font-size:13.5px;min-width:190px;justify-content:center}
.date-input-hidden{position:absolute;width:1px;height:1px;opacity:0;pointer-events:none}

/* ---------- booking layout ---------- */
.booking-layout{display:grid;grid-template-columns:1fr;gap:16px}
@media (min-width:860px){.booking-layout{grid-template-columns:1.6fr 1fr;align-items:start}}
.grid-panel-head{margin-bottom:14px}
.grid-panel-head h2{font-size:16px}

.slot-grid{display:flex;flex-direction:column;gap:8px}
.slot-row{display:flex;align-items:stretch;gap:8px}
.slot-time{flex:none;width:84px;display:flex;align-items:center;font-size:12.5px;color:var(--ink-soft);font-weight:600}
.slot-btn{flex:1;min-height:52px;border-radius:var(--radius-md);border:1px dashed var(--border-strong);background:transparent;padding:9px 14px;display:flex;flex-direction:column;justify-content:center;gap:2px;text-align:left;transition:border-color .15s ease,background .15s ease,transform .1s ease}
.slot-main{font-weight:700;font-size:13.5px}
.slot-sub{font-size:12px;color:var(--ink-soft)}
.slot-row.state-available .slot-btn:hover{border-color:var(--accent);background:var(--accent-soft)}
.slot-row.state-available .slot-btn:hover .slot-main{color:var(--accent-strong)}
.slot-row.state-available .slot-btn:active{transform:scale(.997)}
.slot-row.state-mine .slot-btn{border:1px solid var(--accent);background:var(--accent-soft);cursor:default}
.slot-row.state-mine .slot-main{color:var(--accent-strong)}
.slot-row.state-other .slot-btn{border:1px solid var(--border);background:var(--surface-2)}
.slot-row.state-other .slot-main{color:var(--ink-soft)}
.slot-row.state-selected .slot-btn{border:1.5px solid var(--accent);background:var(--accent-soft)}
.slot-row.state-loading .slot-btn{border:1px dashed var(--border);color:var(--ink-faint)}
.slot-cancel{flex:none;align-self:center;border:1px solid var(--border);background:var(--surface);color:var(--danger);border-radius:var(--radius-sm);padding:0 12px;font-size:12px;font-weight:700}
.slot-cancel:hover{border-color:var(--danger);background:var(--danger-soft)}

.booking-panel{display:flex;flex-direction:column;gap:14px;position:sticky;top:16px}
.panel-empty{display:flex;flex-direction:column;align-items:center;text-align:center;gap:10px;padding:26px 10px;color:var(--ink-soft)}
.panel-empty-icon{width:30px;height:30px;color:var(--ink-faint)}
.panel-empty p{font-size:13.5px;max-width:26ch}

.summary-list{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:14px 0}
.summary-list dt{font-size:11px;text-transform:uppercase;letter-spacing:.06em;color:var(--ink-faint);font-weight:700}
.summary-list dd{margin:2px 0 0;font-weight:700;font-size:14px}
.field{display:flex;flex-direction:column;gap:5px;margin-bottom:12px}
.field label{font-size:12.5px;font-weight:700;color:var(--ink-soft)}
.field select,.field input[type=text],.field input[type=password],.field input[type=date]{border:1px solid var(--border);background:var(--surface-2);border-radius:var(--radius-sm);padding:9px 11px;font-size:14px;width:100%}
.panel-actions{display:flex;gap:10px;margin-top:6px}

.alert{display:flex;gap:11px;padding:13px 14px;border-radius:var(--radius-md);font-size:13px;line-height:1.5}
.alert .icon{flex:none;width:19px;height:19px;margin-top:1px}
.alert-title{font-weight:700;margin-bottom:2px;font-size:13.5px}
.alert-danger{background:var(--danger-soft);color:var(--danger)}
.alert-danger .alert-title{color:var(--danger)}
.alert-warn{background:var(--warn-soft);color:var(--warn)}
.alert-warn .alert-title{color:var(--warn)}
.alert p{color:var(--ink)}

.btn{border-radius:var(--radius-sm);padding:10px 16px;font-weight:700;font-size:13.5px;border:1px solid transparent;display:inline-flex;align-items:center;justify-content:center;gap:7px;transition:filter .15s ease,background .15s ease,border-color .15s ease}
.btn .icon{width:16px;height:16px}
.btn-primary{background:var(--accent);color:var(--accent-ink)}
.btn-primary:hover{filter:brightness(1.06)}
.btn-primary:disabled{opacity:.6;cursor:default}
.btn-primary.is-warn{background:var(--warn)}
.btn-ghost{background:transparent;border-color:var(--border);color:var(--ink)}
.btn-ghost:hover{border-color:var(--border-strong);background:var(--surface-2)}
.btn-sm{padding:7px 12px;font-size:12.5px}
.btn-block{width:100%}

/* ---------- my bookings ---------- */
.my-bookings h2{font-size:16px;margin-bottom:12px}
.booking-row{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;padding:12px 4px;border-top:1px solid var(--border)}
.booking-row:first-of-type{border-top:none}
.booking-row-main{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13.5px}
.booking-room-chip{background:var(--surface-2);border:1px solid var(--border);border-radius:999px;padding:3px 10px;font-weight:700;font-size:12px}
.booking-note{color:var(--ink-soft)}
.empty-note{color:var(--ink-soft);font-size:13.5px;padding:6px 4px}

/* ---------- admin ---------- */
.stat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
@media (min-width:700px){.stat-grid{grid-template-columns:repeat(4,1fr)}}
.stat-tile{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:16px 18px;box-shadow:var(--shadow-sm)}
.stat-label{font-size:12px;color:var(--ink-soft);font-weight:600}
.stat-value{font-size:26px;font-weight:800;margin-top:4px}
.stat-tile-warn{border-color:var(--warn)}
.stat-tile-warn .stat-value{color:var(--warn)}

.table-card-head{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px}
.table-card-head h2{font-size:16px}
.table-scroll{overflow-x:auto}
table{width:100%;border-collapse:collapse;min-width:560px}
thead th{text-align:left;font-size:11px;text-transform:uppercase;letter-spacing:.06em;color:var(--ink-faint);font-weight:700;padding:0 10px 10px}
tbody td{padding:11px 10px;border-top:1px solid var(--border);font-size:13.5px;vertical-align:middle}
tbody tr:hover td{background:var(--surface-2)}
.chip{display:inline-flex;padding:3px 10px;border-radius:999px;font-size:11.5px;font-weight:700}
.chip-ok{background:var(--ok-soft);color:var(--ok)}
.chip-warn{background:var(--warn-soft);color:var(--warn)}
.chip-off{background:var(--surface-inset);color:var(--ink-soft)}
.table-actions{display:flex;gap:6px}
.mini-meter{display:flex;align-items:center;gap:8px}
.mini-track{width:74px;height:6px;border-radius:999px;background:var(--surface-inset);overflow:hidden;flex:none}
.mini-fill{height:100%;background:var(--ok)}
.mini-fill.is-warn{background:var(--warn)}
.mini-fill.is-danger{background:var(--danger)}
.mini-figure{font-size:12px;color:var(--ink-soft)}

.footnote{text-align:center;color:var(--ink-faint);font-size:12.5px;padding-top:6px}

/* ---------- login ---------- */
.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px}
.login-card{width:100%;max-width:360px;display:flex;flex-direction:column;gap:16px}
.login-card h2{font-size:19px}
.login-error{display:none}
.login-error.is-visible{display:block}

/* ---------- modal ---------- */
.modal-overlay{position:fixed;inset:0;background:rgba(10,16,17,.5);display:flex;align-items:center;justify-content:center;padding:20px;z-index:50}
.modal{background:var(--surface);border-radius:var(--radius-lg);border:1px solid var(--border);box-shadow:var(--shadow-md);width:100%;max-width:420px;padding:22px;max-height:88vh;overflow-y:auto}
.modal-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.modal-head h2{font-size:16.5px}
.modal-error{background:var(--danger-soft);color:var(--danger);border-radius:var(--radius-sm);padding:10px 12px;font-size:13px;margin-bottom:12px}
.modal-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:18px}

/* ---------- toast ---------- */
.toast-stack{position:fixed;left:50%;bottom:22px;transform:translateX(-50%);display:flex;flex-direction:column;gap:8px;z-index:80;width:min(92vw,380px)}
.toast{background:var(--ink);color:var(--bg);border-radius:var(--radius-md);padding:12px 16px;font-size:13.5px;font-weight:600;box-shadow:var(--shadow-md);display:flex;gap:10px;align-items:flex-start;animation:toast-in .2s ease}
.toast .icon{width:17px;height:17px;flex:none;margin-top:1px}
.toast-ok{color:var(--ok)}
.toast-warn{color:var(--warn)}
@keyframes toast-in{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}

[hidden]{display:none !important}