/* ============================================================
   Mitsubishi Electric — Customer Support Portal
   Brand layer on top of Bootstrap / Soft-UI.
   ============================================================ */

:root {
  --mel-red: #e60012;
  --mel-red-dark: #b3000e;
  --mel-charcoal: #1f2329;
  --mel-charcoal-2: #2b313a;
  --mel-grey: #f4f6f9;
  --mel-grey-2: #e6eaf0;
  --mel-text: #2c3037;
  --mel-muted: #6b7280;
  --mel-radius: 14px;
  --mel-shadow: 0 10px 30px rgba(20, 23, 28, 0.08);
}

body {
  color: var(--mel-text);
  background: #fff;
}

/* ---------- Brand mark (three diamonds) ---------- */
.mel-logo { display: inline-flex; align-items: center; gap: .6rem; text-decoration: none; }
.mel-logo svg { width: 34px; height: 30px; flex: 0 0 auto; }
.mel-logo .mel-logo-text {
  font-weight: 800; letter-spacing: .02em; color: var(--mel-charcoal);
  font-size: 1.05rem; line-height: 1.05; text-transform: uppercase;
}
.mel-logo .mel-logo-sub { display:block; font-weight: 600; font-size: .62rem;
  color: var(--mel-muted); letter-spacing: .18em; }
.mel-logo.mel-logo-light .mel-logo-text { color: #fff; }

/* ---------- Buttons ---------- */
.btn-mel {
  background: var(--mel-red); border: none; color: #fff; font-weight: 600;
  border-radius: 10px; padding: .65rem 1.4rem; transition: all .15s ease;
}
.btn-mel:hover { background: var(--mel-red-dark); color: #fff; transform: translateY(-1px); }
.btn-mel-outline {
  background: transparent; border: 2px solid var(--mel-red); color: var(--mel-red);
  font-weight: 600; border-radius: 10px; padding: .6rem 1.35rem;
}
.btn-mel-outline:hover { background: var(--mel-red); color: #fff; }
.text-mel { color: var(--mel-red) !important; }
.bg-mel { background: var(--mel-red) !important; }

/* ============================================================
   PUBLIC (customer) site
   ============================================================ */
.mel-public-nav {
  background: #fff; border-bottom: 1px solid var(--mel-grey-2);
  padding: .85rem 0; position: sticky; top: 0; z-index: 1030;
}
.mel-public-nav a.nav-link { color: var(--mel-charcoal); font-weight: 600; }
.mel-public-nav a.nav-link:hover { color: var(--mel-red); }

.mel-hero {
  background: linear-gradient(120deg, var(--mel-charcoal) 0%, var(--mel-charcoal-2) 60%, #3a2a2c 100%);
  color: #fff; padding: 4.5rem 0 5rem; position: relative; overflow: hidden;
}
.mel-hero::after {
  content: ""; position: absolute; right: -120px; top: -60px; width: 420px; height: 420px;
  background: radial-gradient(circle, rgba(230,0,18,.35), transparent 60%);
}
.mel-hero h1 { font-weight: 800; font-size: 2.6rem; }
.mel-hero p.lead { color: rgba(255,255,255,.82); max-width: 620px; }
.mel-hero .mel-accent { color: #ff5263; }

.mel-card {
  background: #fff; border: 1px solid var(--mel-grey-2); border-radius: var(--mel-radius);
  box-shadow: var(--mel-shadow); padding: 1.6rem; height: 100%;
}
.mel-card .mel-card-icon {
  width: 54px; height: 54px; border-radius: 14px; display: grid; place-items: center;
  background: rgba(230,0,18,.08); color: var(--mel-red); font-size: 1.4rem; margin-bottom: 1rem;
}
.mel-section { padding: 3.5rem 0; }
.mel-footer { background: var(--mel-charcoal); color: rgba(255,255,255,.7); padding: 2.2rem 0; }
.mel-footer a { color: rgba(255,255,255,.85); }

/* ============================================================
   CHAT widget
   ============================================================ */
.mel-chat-wrap { max-width: 860px; margin: 0 auto; }
.mel-chat-window {
  background: var(--mel-grey); border: 1px solid var(--mel-grey-2); border-radius: var(--mel-radius);
  height: 60vh; min-height: 420px; overflow-y: auto; padding: 1.25rem;
}
.mel-msg { display: flex; margin-bottom: 1rem; }
.mel-msg .mel-bubble {
  padding: .8rem 1rem; border-radius: 14px; max-width: 78%; white-space: pre-wrap;
  line-height: 1.5; box-shadow: 0 2px 6px rgba(0,0,0,.05); font-size: .95rem;
}
.mel-msg.user { justify-content: flex-end; }
.mel-msg.user .mel-bubble { background: var(--mel-red); color: #fff; border-bottom-right-radius: 4px; }
.mel-msg.bot .mel-bubble { background: #fff; color: var(--mel-text); border-bottom-left-radius: 4px; }
.mel-msg.bot .mel-avatar, .mel-msg.user .mel-avatar {
  width: 34px; height: 34px; border-radius: 50%; display: grid; place-items: center;
  flex: 0 0 auto; margin: 0 .5rem; font-size: .9rem; color: #fff;
}
.mel-msg.bot .mel-avatar { background: var(--mel-charcoal); }
.mel-msg.user .mel-avatar { background: var(--mel-red); order: 2; }
.mel-citations { margin-top: .5rem; font-size: .78rem; color: var(--mel-muted); }
.mel-citations .badge { background: var(--mel-grey-2); color: var(--mel-charcoal); font-weight: 600; margin: 2px; }
.mel-typing span {
  display:inline-block; width:7px; height:7px; margin:0 1px; background:var(--mel-muted);
  border-radius:50%; animation: melblink 1.2s infinite both;
}
.mel-typing span:nth-child(2){ animation-delay:.2s; } .mel-typing span:nth-child(3){ animation-delay:.4s; }
@keyframes melblink { 0%,80%,100%{opacity:.2;} 40%{opacity:1;} }

.mel-escalate {
  background: #fff; border: 1px dashed var(--mel-red); border-radius: 12px;
  padding: .9rem 1.1rem; margin-top: 1rem;
}

/* ============================================================
   DASHBOARD (admin / provider)
   ============================================================ */
.mel-sidebar {
  background: var(--mel-charcoal); color: #cdd3db; width: 260px; min-height: 100vh;
  position: fixed; top: 0; left: 0; padding: 1.2rem 0; z-index: 1040;
}
.mel-sidebar .mel-logo { padding: 0 1.4rem 1rem; }
.mel-sidebar .mel-logo .mel-logo-text { color: #fff; }
.mel-sidebar a.mel-nav-item {
  display: flex; align-items: center; gap: .8rem; color: #cdd3db; padding: .7rem 1.4rem;
  font-weight: 600; font-size: .92rem; text-decoration: none; border-left: 3px solid transparent;
}
.mel-sidebar a.mel-nav-item:hover { background: rgba(255,255,255,.05); color: #fff; }
.mel-sidebar a.mel-nav-item.active { background: rgba(230,0,18,.15); color: #fff; border-left-color: var(--mel-red); }
.mel-sidebar .mel-nav-section { padding: 1rem 1.4rem .3rem; font-size: .68rem; letter-spacing: .14em;
  text-transform: uppercase; color: #7c8696; }

.mel-main { margin-left: 260px; min-height: 100vh; background: var(--mel-grey); }
.mel-topbar {
  background: #fff; border-bottom: 1px solid var(--mel-grey-2); padding: .9rem 1.6rem;
  display: flex; align-items: center; justify-content: space-between; position: sticky; top: 0; z-index: 1030;
}
.mel-content { padding: 1.6rem; }

.mel-stat { background:#fff; border:1px solid var(--mel-grey-2); border-radius: var(--mel-radius);
  padding: 1.2rem 1.3rem; box-shadow: var(--mel-shadow); }
.mel-stat .mel-stat-num { font-size: 1.9rem; font-weight: 800; color: var(--mel-charcoal); }
.mel-stat .mel-stat-label { color: var(--mel-muted); font-size: .82rem; font-weight: 600; text-transform: uppercase; letter-spacing: .05em; }
.mel-stat .mel-stat-icon { width:46px; height:46px; border-radius:12px; display:grid; place-items:center;
  background: rgba(230,0,18,.08); color: var(--mel-red); font-size:1.2rem; }

.mel-panel { background:#fff; border:1px solid var(--mel-grey-2); border-radius: var(--mel-radius);
  box-shadow: var(--mel-shadow); }
.mel-panel .mel-panel-head { padding: 1rem 1.3rem; border-bottom:1px solid var(--mel-grey-2);
  font-weight: 700; color: var(--mel-charcoal); display:flex; justify-content:space-between; align-items:center; }
.mel-panel .mel-panel-body { padding: 1.1rem 1.3rem; }

.table thead th { font-size:.72rem; text-transform:uppercase; letter-spacing:.04em; color:var(--mel-muted); }
.mel-table-row-link { cursor:pointer; }
.mel-table-row-link:hover { background: var(--mel-grey); }

.badge { font-weight:600; }

/* Conversation thread */
.mel-thread .mel-thread-item { border:1px solid var(--mel-grey-2); border-radius:12px; padding:.9rem 1.1rem; margin-bottom:.8rem; }
.mel-thread .mel-thread-item.internal { background:#fff8e6; border-color:#ffe08a; }
.mel-thread .mel-thread-item.customer { background:#fff; }
.mel-thread .mel-thread-item.provider { background:#eef6ff; border-color:#cfe5ff; }
.mel-thread .mel-thread-item.admin { background:#f4f6f9; }
.mel-thread .mel-thread-meta { font-size:.78rem; color:var(--mel-muted); margin-bottom:.3rem; }

@media (max-width: 991px) {
  .mel-sidebar { transform: translateX(-100%); transition: transform .2s ease; }
  .mel-sidebar.show { transform: translateX(0); }
  .mel-main { margin-left: 0; }
}