/* ── Login ── */
.login-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
}
.login-container {
  width: 100%;
  max-width: 320px;
  padding: 0 16px;
}
.login-container form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.login-container input[type="password"] {
  font-size: 16px;
  letter-spacing: 2px;
}
.login-container button[type="submit"] {
  background: var(--accent);
  color: #fff;
  border-radius: var(--radius);
  padding: 12px;
  font-size: 15px;
  font-weight: 600;
  transition: opacity .15s;
}
.login-container button[type="submit"]:hover { opacity: .85; }
.login-container button[type="submit"]:disabled { opacity: .5; cursor: default; }

/* ── Chat layout ── */
.chat-page {
  display: flex;
  height: 100vh;
  overflow: hidden;
}
.chat-wrapper {
  display: flex;
  flex-direction: column;
  flex: 1;
  height: 100%;
  max-width: 720px;
  margin: 0 auto;
  width: 100%;
}

/* ── Header ── */
.chat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  flex-shrink: 0;
}
.chat-username { font-weight: 600; font-size: 15px; }

/* ── Message list ── */
.message-list {
  flex: 1;
  overflow-y: auto;
  padding: 12px 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  scroll-behavior: smooth;
}

.load-more-wrap { text-align: center; padding: 8px 0; }
.load-more-btn {
  background: none;
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 6px 16px;
  font-size: 13px;
  color: var(--text-muted);
  cursor: pointer;
}
.load-more-btn:hover { color: var(--text); }

/* ── Message bubbles ── */
.msg-row {
  display: flex;
  flex-direction: column;
  max-width: 78%;
}
.msg-row.mine { align-self: flex-end; align-items: flex-end; }
.msg-row.theirs { align-self: flex-start; align-items: flex-start; }

.msg-bubble {
  padding: 8px 12px;
  border-radius: 14px;
  font-size: 14px;
  word-break: break-word;
  position: relative;
}
.msg-row.mine .msg-bubble { background: var(--accent); color: #fff; border-bottom-right-radius: 4px; }
.msg-row.theirs .msg-bubble { background: var(--surface); border-bottom-left-radius: 4px; }

.msg-meta {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 2px;
  font-size: 11px;
  color: var(--text-muted);
}

.msg-content {
  -webkit-user-select: none;
  user-select: none;
  -webkit-touch-callout: none;
}

/* ── System messages ── */
.msg-system {
  align-self: center;
  text-align: center;
  font-size: 12px;
  color: var(--text-muted);
  font-style: italic;
  padding: 4px 0;
}

/* ── Read receipt ticks ── */
.tick { display: inline-block; font-size: 13px; }
.tick.sent     { color: var(--text-muted); }
.tick.delivered{ color: var(--text-muted); }
.tick.read     { color: var(--green); }

/* ── Input area ── */
.input-area {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  padding: 10px 16px;
  border-top: 1px solid var(--border);
  background: var(--bg);
  flex-shrink: 0;
}
.attach-btn {
  cursor: pointer;
  font-size: 20px;
  color: var(--text-muted);
  padding: 6px;
  min-width: 36px;
  min-height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.attach-btn:hover { color: var(--text); }

.message-input {
  flex: 1;
  resize: none;
  min-height: 40px;
  max-height: 120px;
  overflow-y: auto;
  border-radius: 20px;
  padding: 10px 14px;
  font-size: 14px;
  line-height: 1.4;
}

.send-btn {
  background: var(--accent);
  color: #fff;
  border-radius: 50%;
  width: 40px;
  height: 40px;
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: opacity .15s;
}
.send-btn:hover { opacity: .85; }
.send-btn:disabled { opacity: .5; cursor: default; }

/* ── Footer ── */
.chat-footer {
  text-align: center;
  font-size: 11px;
  color: var(--text-muted);
  padding: 6px 16px;
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}

/* ── Password re-entry overlay (page refresh) ── */
.pk-overlay {
  position: fixed;
  inset: 0;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
}
.pk-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
  width: 280px;
  padding: 0 16px;
}
.pk-form input[type="password"] {
  font-size: 16px;
  letter-spacing: 2px;
}
.pk-form button {
  background: var(--accent);
  color: #fff;
  border-radius: var(--radius);
  padding: 12px;
  font-weight: 600;
}
.pk-err {
  color: var(--danger);
  font-size: 13px;
  min-height: 18px;
}

/* ── Uploading indicator ── */
.upload-progress {
  font-size: 12px;
  color: var(--accent);
  padding: 4px 16px;
  text-align: center;
}