/* In-page messaging (header inbox dropdown + Send Message pop-up + toast).
   Matches the approved discover-a-tutor.html prototype. All selectors are tnb- prefixed so
   Elementor/Astra/Better Messages styles can't collide; a few !important where the theme's
   global button/textarea rules would otherwise win. */
:root {
  --tnbm-maroon: #630320;
  --tnbm-maroon-hover: #4d0219;
  --tnbm-text: #1d1d1f;
  --tnbm-muted: #6b6b75;
  --tnbm-border: #e4e4e9;
  --tnbm-soft: #f7f7f9;
  --tnbm-font: "M PLUS 2", sans-serif;
}

/* ---------- Header icon + badge ---------- */
.tnb-inbox-wrap { position: relative; display: inline-flex; font-family: var(--tnbm-font); }
.tnb-icon-btn {
  position: relative; width: 44px !important; height: 44px !important; padding: 0 !important;
  border-radius: 50% !important; border: 0 !important; background: rgba(255,255,255,.12) !important;
  color: #fff !important; display: grid !important; place-items: center; cursor: pointer; transition: background .15s;
  box-shadow: none !important;
}
.tnb-icon-btn:hover, .tnb-icon-btn[aria-expanded="true"] { background: rgba(255,255,255,.24) !important; }
.tnb-badge {
  position: absolute; top: -2px; right: -2px; min-width: 19px; height: 19px; padding: 0 5px;
  border-radius: 999px; background: #e8b931; color: #3a0b18; font-size: 11px; font-weight: 800; line-height: 1;
  display: grid; place-items: center; border: 2px solid #6a0221;
}
.tnb-badge[hidden] { display: none; }

/* ---------- Dropdown ---------- */
.tnb-inbox {
  position: fixed; top: 80px; right: 16px; width: 380px; height: 520px;
  background: #fff; border-radius: 14px; box-shadow: 0 18px 50px rgba(0,0,0,.22);
  display: flex; flex-direction: column; z-index: 9999; color: var(--tnbm-text); text-align: left;
  font-family: var(--tnbm-font);
}
.tnb-inbox[hidden] { display: none; }
.tnb-inbox::before {
  content: ""; position: absolute; top: -8px; right: var(--tnb-arrow-right, 14px); width: 16px; height: 16px;
  background: #fff; transform: rotate(45deg);
}
.tnb-list-view { display: flex; flex-direction: column; flex: 1; min-height: 0; border-radius: 14px; overflow: hidden; }
.tnb-list-view[hidden] { display: none; }
.tnb-inbox-head {
  position: relative; display: flex; align-items: center; gap: 10px;
  padding: 16px 18px; border-bottom: 1px solid var(--tnbm-border); background: #fff;
}
.tnb-inbox-head h3 {
  margin: 0 !important; font-family: var(--tnbm-font) !important; font-size: 17px !important; font-weight: 800 !important;
  color: var(--tnbm-text) !important; flex: 1; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; line-height: 1.3;
}
.tnb-sub { font-size: 12px; color: var(--tnbm-muted); font-weight: 600; }
.tnb-ghost-btn {
  width: 32px !important; height: 32px !important; padding: 0 !important; border-radius: 50% !important; border: 0 !important;
  background: transparent !important; display: grid !important; place-items: center; cursor: pointer; color: var(--tnbm-text) !important;
  flex: 0 0 32px; box-shadow: none !important;
}
.tnb-ghost-btn:hover { background: var(--tnbm-soft) !important; }

.tnb-thread-list { list-style: none !important; margin: 0 !important; padding: 6px 0 !important; overflow-y: auto; flex: 1; }
.tnb-thread { display: flex; gap: 12px; align-items: center; padding: 12px 18px; cursor: pointer; margin: 0 !important; }
.tnb-thread:hover, .tnb-thread:focus-visible { background: var(--tnbm-soft); }
.tnb-thread.unread .tnb-t-name, .tnb-thread.unread .tnb-t-last { font-weight: 800; color: var(--tnbm-text); }
.tnb-avatar {
  flex: 0 0 42px; width: 42px; height: 42px; border-radius: 50%; overflow: hidden;
  display: grid; place-items: center; font-weight: 800; color: #fff; font-size: 15px;
}
.tnb-avatar img { width: 100%; height: 100%; object-fit: cover; display: block; }
.tnb-avatar-sm { flex-basis: 34px; width: 34px; height: 34px; font-size: 13px; }
.tnb-t-body { flex: 1; min-width: 0; }
.tnb-t-top { display: flex; justify-content: space-between; gap: 8px; }
.tnb-t-name { font-weight: 700; font-size: 14px; }
.tnb-t-time { font-size: 12px; color: var(--tnbm-muted); white-space: nowrap; }
.tnb-t-last { font-size: 13px; color: var(--tnbm-muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; margin-top: 2px; }
.tnb-t-dot { width: 9px; height: 9px; border-radius: 50%; background: var(--tnbm-maroon); flex: 0 0 9px; }
.tnb-empty { padding: 40px 24px; text-align: center; color: var(--tnbm-muted); font-size: 14px; }
.tnb-all-link {
  display: block; padding: 11px 18px; border-top: 1px solid var(--tnbm-border); text-align: center;
  font-size: 13px; font-weight: 700; color: var(--tnbm-maroon) !important; text-decoration: none !important;
}
.tnb-all-link:hover { background: var(--tnbm-soft); }

/* Conversation view */
.tnb-convo { display: flex; flex-direction: column; flex: 1; min-height: 0; border-radius: 14px; overflow: hidden; }
.tnb-convo[hidden] { display: none; }
.tnb-messages { flex: 1; overflow-y: auto; padding: 16px; background: var(--tnbm-soft); display: flex; flex-direction: column; gap: 8px; }
.tnb-msg { max-width: 78%; padding: 9px 13px; border-radius: 14px; font-size: 14px; line-height: 1.4; white-space: pre-wrap; word-wrap: break-word; overflow-wrap: anywhere; }
.tnb-msg.them { align-self: flex-start; background: #fff; border: 1px solid var(--tnbm-border); border-bottom-left-radius: 4px; }
.tnb-msg.me { align-self: flex-end; background: var(--tnbm-maroon); color: #fff; border-bottom-right-radius: 4px; }
.tnb-msg .tnb-topic { display: block; font-size: 11px; font-weight: 800; opacity: .75; margin-bottom: 3px; text-transform: uppercase; letter-spacing: .04em; }
.tnb-msg-time { font-size: 11px; color: var(--tnbm-muted); align-self: flex-end; margin-top: -4px; }
.tnb-msg-time.them { align-self: flex-start; }
.tnb-msg.pending { opacity: .6; }
.tnb-loading { margin: auto; font-size: 13px; color: var(--tnbm-muted); }

.tnb-composer { display: flex; align-items: flex-end; gap: 8px; padding: 12px; border-top: 1px solid var(--tnbm-border); background: #fff; margin: 0 !important; }
.tnb-composer textarea {
  flex: 1; resize: none !important; height: 42px; min-height: 42px !important; max-height: 110px; padding: 10px 14px !important;
  font: inherit !important; font-size: 14px !important; color: var(--tnbm-text) !important; background: #fff !important;
  border: 1px solid #d6d8de !important; border-radius: 12px !important; outline: none; box-shadow: none;
}
.tnb-composer textarea:focus, .tnb-field:focus { border-color: var(--tnbm-maroon) !important; box-shadow: 0 0 0 3px rgba(99,3,32,.12) !important; }
.tnb-send-btn {
  width: 42px !important; height: 42px !important; padding: 0 !important; border-radius: 12px !important; border: 0 !important;
  background: var(--tnbm-maroon) !important; color: #fff !important; display: grid !important; place-items: center; cursor: pointer; flex: 0 0 42px;
}
.tnb-send-btn:hover { background: var(--tnbm-maroon-hover) !important; }
.tnb-send-btn:disabled { background: #c9b3ba !important; cursor: not-allowed; }

/* ---------- Send-message pop-up ---------- */
.tnb-overlay { position: fixed; inset: 0; background: rgba(20,8,12,.45); display: grid; place-items: center; z-index: 100000; padding: 16px; font-family: var(--tnbm-font); }
.tnb-overlay[hidden] { display: none; }
.tnb-modal { width: 100%; max-width: 460px; background: #fff; border-radius: 16px; box-shadow: 0 24px 60px rgba(0,0,0,.3); overflow: hidden; margin: 0; color: var(--tnbm-text); text-align: left; }
.tnb-modal-head { display: flex; align-items: center; gap: 12px; padding: 18px 20px; border-bottom: 1px solid var(--tnbm-border); }
.tnb-modal-head .tnb-avatar { flex-basis: 44px; width: 44px; height: 44px; }
.tnb-modal-head h3 { margin: 0 !important; font-family: var(--tnbm-font) !important; font-size: 17px !important; font-weight: 800 !important; color: var(--tnbm-text) !important; line-height: 1.3; }
.tnb-modal-head p { margin: 2px 0 0 !important; font-size: 13px; color: var(--tnbm-muted); }
.tnb-modal-head > div { flex: 1; min-width: 0; }
.tnb-modal-body { padding: 18px 20px 20px; }
.tnb-modal-body label { display: block; font-size: 13px; font-weight: 800; margin: 0 0 8px; color: var(--tnbm-text); }
.tnb-field {
  width: 100% !important; font: inherit !important; font-size: 14px !important; color: var(--tnbm-text) !important;
  border: 1px solid #d6d8de !important; border-radius: 10px !important; outline: none; padding: 10px 14px !important;
  margin: 0 0 16px !important; background: #fff !important; box-shadow: none; box-sizing: border-box;
}
select.tnb-field { height: 44px; }
textarea.tnb-field { height: 130px; resize: vertical; }
.tnb-char { font-size: 12px; color: var(--tnbm-muted); text-align: right; margin: -10px 0 14px; }
.tnb-error { font-size: 13px; color: #b42318; margin: -6px 0 12px; }
.tnb-error:empty { display: none; }
.tnb-modal-actions { display: flex; gap: 10px; }
.tnb-modal-actions button {
  flex: 1; height: 44px !important; padding: 0 !important; border-radius: 10px !important; font-family: inherit !important;
  font-weight: 800 !important; font-size: 15px !important; cursor: pointer; box-shadow: none !important;
}
.tnb-btn-cancel { background: #fff !important; border: 1px solid var(--tnbm-border) !important; color: var(--tnbm-text) !important; }
.tnb-btn-send { background: var(--tnbm-maroon) !important; color: #fff !important; border: 0 !important; }
.tnb-btn-send:hover { background: var(--tnbm-maroon-hover) !important; }
.tnb-btn-send:disabled { background: #c9b3ba !important; cursor: not-allowed; }

/* ---------- Toast ---------- */
.tnb-toast {
  position: fixed; left: 50%; bottom: 28px; transform: translateX(-50%) translateY(20px);
  background: #1d1d1f; color: #fff; padding: 12px 16px; border-radius: 12px; font-size: 14px; font-weight: 600;
  display: flex; gap: 14px; align-items: center; opacity: 0; pointer-events: none; transition: .25s; z-index: 100001;
  font-family: var(--tnbm-font); max-width: calc(100vw - 32px);
}
.tnb-toast.show { opacity: 1; transform: translateX(-50%); pointer-events: auto; }
.tnb-toast button { background: none !important; border: 0 !important; padding: 0 !important; color: #f0c75e !important; font-weight: 800; cursor: pointer; font-size: 14px; font-family: inherit; white-space: nowrap; }

.tnb-inbox :focus-visible, .tnb-modal :focus-visible, .tnb-icon-btn:focus-visible { outline: 2px solid #e8b931; outline-offset: 2px; }

@media (max-width: 640px) {
  .tnb-inbox::before { display: none; }
}