:root{
  --bg:#0b0d1a;            /* twilight navy */
  --panel:#161632;         /* deep indigo */
  --panel-2:#201a3e;       /* purple dusk */
  --accent:#ff7a18;        /* sunset orange */
  --accent-2:#ff3d81;      /* hot pink sky */
  --accent-3:#ffb703;      /* golden hour */
  --text:#f9f7ff;          /* near-white with lilac tint */
  --muted:#b6bed0;         /* soft slate */
  --success:#2ecc71;
  --danger:#e74c3c;
  --shadow: 0 8px 28px rgba(0,0,0,0.45);
  --radius: 12px;
  --space: 14px;
}

*{ box-sizing:border-box; }
html,body{ height:100%; }
body{
  margin:0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color:var(--text);
  background:
              radial-gradient(1200px 900px at 20% -10%, rgba(255,122,24,0.22), transparent 60%),
              radial-gradient(900px 700px at 120% 10%, rgba(255,61,129,0.20), transparent 60%),
              linear-gradient(180deg, #0b0d1a 0%, #1a1030 60%, #200b2e 100%);
  line-height:1.45;
}

/* Header / Nav */
header{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:16px clamp(16px, 5vw, 40px);
  background: linear-gradient(180deg, rgba(49,22,70,0.90), rgba(26,16,48,0.72));
  position:sticky; top:0; z-index:10;
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
header h1{
  margin:0;
  font-size: clamp(18px, 2.4vw, 24px);
  letter-spacing:0.4px;
}
header h1 a{ color:var(--text); text-decoration:none; }
nav a{
  color:var(--muted);
  text-decoration:none;
  margin:0 8px;
}
nav a:hover{ color:var(--text); }
nav strong a{ color:var(--text); }

/* Announcement bar */
.announcement{
  margin:12px auto 0;
  max-width:1100px;
  background: linear-gradient(90deg, rgba(255,122,24,0.22), rgba(255,61,129,0.22));
  border: 1px solid rgba(255,255,255,0.08);
  color:var(--text);
  padding:12px 14px;
  border-radius: 10px;
}

/* Layout */
main{
  display:block;
  max-width:1200px;
  margin: 18px auto 60px;
  padding: 0 clamp(12px, 4vw, 20px);
}

/* Cards & Panels */
.card{
  background: linear-gradient(180deg, rgba(24,26,42,0.9), rgba(24,26,42,0.86));
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding:clamp(16px, 2.8vw, 24px);
}
.card h1, .card h2, .card h3{ margin-top:0; }

/* Auth page */
body.auth{
  display:flex;
  align-items:center;
  justify-content:center;
}
body.auth .card{
  width: min(92vw, 420px);
}
label{
  display:block;
  margin: 10px 0;
  color:var(--text);
}
label.small{ font-size: 0.9rem; color: var(--muted); }
input[type="text"], input[type="email"], input[type="password"], textarea, select{
  width:100%;
  padding:12px 12px;
  border-radius:10px;
  background: var(--panel-2);
  color:var(--text);
  border:1px solid rgba(255,255,255,0.08);
  outline:none;
  transition: box-shadow 0.15s ease, border-color 0.15s ease;
}
textarea{ min-height: 90px; resize: vertical; }
input:focus, textarea:focus, select:focus{
  border-color: rgba(246,107,14,0.6);
  box-shadow: 0 0 0 3px rgba(246,107,14,0.18);
}
.inline{ display:flex; align-items:center; gap:8px; }
.inline input[type="checkbox"]{ width:auto; }

/* Buttons */
button, .button{
  -webkit-appearance: none;
  appearance: none;
  border:none;
  cursor:pointer;
  padding: 10px 14px;
  border-radius: 10px;
  background: linear-gradient(180deg, var(--accent), #cc4e00);
  color:#1a0b06;
  font-weight: 600;
  transition: transform .04s ease, filter .2s ease, box-shadow .2s ease;
  box-shadow: 0 6px 18px rgba(246,107,14,0.28);
}
button:hover, .button:hover{ filter: brightness(1.05); }
button:active, .button:active{ transform: translateY(1px); }

.button.secondary{
  background: linear-gradient(180deg, #3a2a67, #2a214f);
  color: var(--text);
  box-shadow:none;
}
.button.danger{
  background: linear-gradient(180deg, var(--danger), #cf3f30);
  color: #fff;
  box-shadow: 0 6px 18px rgba(231,76,60,0.28);
}

/* Utilities */
.stack > * + *{ margin-top:10px; }
.flash{
  background: rgba(46,204,113,0.16);
  border: 1px solid rgba(46,204,113,0.35);
  color: #c1f3d7;
  padding: 8px 10px;
  border-radius: 8px;
}
.error{
  background: rgba(231,76,60,0.16);
  border: 1px solid rgba(231,76,60,0.35);
  color: #ffd3ce;
  padding: 8px 10px;
  border-radius: 8px;
}

/* Two-pane chat layout */
.chat-layout{
  display:grid;
  grid-template-columns: 320px 1fr;
  gap:16px;
}
@media (max-width: 900px){
  .chat-layout{ grid-template-columns: 1fr; }
}

.sidebar{
  background: linear-gradient(180deg, rgba(28,20,48,0.92), rgba(24,18,42,0.82));
  border:1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius);
  overflow:hidden;
  display:flex; flex-direction:column;
  min-height: 420px;
}
.sidebar-header{
  padding:12px 14px;
  display:flex; gap:8px; align-items:center; justify-content:space-between;
  border-bottom:1px solid rgba(255,255,255,0.06);
  background: linear-gradient(90deg, rgba(255,122,24,0.16), transparent);
}
.chat-list{
  padding:8px;
  overflow:auto;
}
.chat-item{
  display:flex; justify-content:space-between; align-items:center;
  gap:8px;
  padding:10px 10px;
  border-radius:10px;
  color:var(--text);
  text-decoration:none;
  border:1px solid transparent;
}
.chat-item:hover{
  background: rgba(255,255,255,0.04);
  border-color: rgba(255,255,255,0.06);
}
.chat-item .title{ font-weight:600; }
.chat-item .desc{ color:var(--muted); font-size: 0.9rem; }

.content{
  background: linear-gradient(180deg, rgba(28,20,48,0.92), rgba(24,18,42,0.82));
  border:1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius);
  overflow:hidden;
  min-height: 420px;
  display:flex; flex-direction:column;
}
.content-header{
  padding:12px 14px;
  border-bottom:1px solid rgba(255,255,255,0.06);
  display:flex; align-items:center; justify-content:space-between; gap:10px;
  background: linear-gradient(90deg, rgba(255,61,129,0.16), transparent);
}
.content-body{
  padding: 14px;
  flex:1;
  overflow:auto;
}
.content-footer{
  border-top:1px solid rgba(255,255,255,0.06);
  padding: 10px;
  background: rgba(0,0,0,0.15);
}

/* Messages */
.msg-row{
  display:flex;
  margin-bottom:8px;
  gap:8px;
  align-items:flex-end;
}
.msg-row.theirs{ justify-content:flex-start; }
.msg-row.mine{ justify-content:flex-end; }

.message{
  display:flex;
  flex-direction: column;
  gap:6px;
  align-items:flex-start;
  padding:10px 12px;
  background: rgba(0,0,0,0.12);
  border:1px solid rgba(255,255,255,0.05);
  border-radius: 12px;
  max-width: min(70ch, 72%);
  box-shadow: var(--shadow);
}
.message.theirs{
  background: rgba(0,0,0,0.12);
  border:1px solid rgba(255,255,255,0.08);
  border-radius: 12px 12px 12px 6px;
}
.message.mine{
  background: linear-gradient(180deg, var(--accent-3), var(--accent));
  color:#1a0b06;
  border:1px solid rgba(0,0,0,0.08);
  border-radius: 12px 12px 6px 12px;
  box-shadow: 0 6px 18px rgba(255,122,24,0.28);
}
.message .meta{
  font-size: 0.85rem;
  color: var(--muted);
}
.message.mine .meta{ color: rgba(26,11,6,0.7); }
.message .author{
  color: var(--accent-3);
  font-weight: 600;
}
.message.mine .author{
  color: #1a0b06;
}
.message .time{
  color: var(--muted);
  margin-left: 8px;
  font-size: 0.82rem;
}
/* Make own-message timestamp black for strong contrast on warm bubble */
.message.mine .time{
  color: #000;
}
.message .body{
  color: inherit;
}

/* Forms inline in footer */
.compose{
  display:flex; gap:8px; align-items:flex-end;
}
.compose textarea{
  flex:1;
  min-height: 56px;
}

/* Tables (admin lists) */
table{
  width:100%;
  border-collapse: collapse;
  background: var(--panel);
  border-radius: 10px;
  overflow: hidden;
}
th, td{
  padding: 10px 12px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
th{
  text-align:left;
  color: var(--muted);
  font-weight: 600;
  background: rgba(255,255,255,0.03);
}

/* Links */
a{ color: var(--accent-3); }
a:hover{ color: var(--accent); }

/* Misc */
hr{
  border: none;
  border-top: 1px solid rgba(255,255,255,0.08);
  margin: 14px 0;
}

/* Modal (Members) */
.hidden{ display:none !important; }

.modal-overlay{
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.45);
  backdrop-filter: blur(2px);
  display:flex;
  align-items:center;
  justify-content:center;
  z-index: 1000;
  padding: 16px;
}

.modal-card{
  width: min(92vw, 560px);
  background: linear-gradient(180deg, rgba(28,20,48,0.97), rgba(24,18,42,0.92));
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.modal-header{
  padding: 12px 14px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  background: linear-gradient(90deg, rgba(255,61,129,0.12), transparent);
}

.modal-body{
  padding: 12px 14px;
  max-height: 60vh;
  overflow:auto;
}

.badge{
  display:inline-block;
  padding: 4px 8px;
  border-radius: 999px;
  font-size: 0.82rem;
  border: 1px solid rgba(255,255,255,0.08);
}