/* ─── WhatsApp Web look · POC genérico ─────────────────────────────── */

:root {
  --wa-bg: #efeae2;
  --wa-bg-pattern: #d9d4cb;
  --wa-panel: #ffffff;
  --wa-side-bg: #f0f2f5;
  --wa-border: #d1d7db;
  --wa-text: #111b21;
  --wa-text-soft: #54656f;
  --wa-bubble-in: #ffffff;
  --wa-bubble-out: #d9fdd3;
  --wa-link: #027eb5;
  --wa-green: #008069;
  --wa-green-dark: #00604f;
  --wa-shadow: 0 1px 0.5px rgba(11, 20, 26, 0.13);
  --pd-purple: #6c1cfb;
  --pd-purple-dark: #4a09c4;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  height: 100%;
  font-family:
    "Inter",
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    Roboto,
    sans-serif;
  background: linear-gradient(180deg, #00a884 0 130px, #d9dbd5 130px 100%);
  color: var(--wa-text);
}

.app {
  display: grid;
  grid-template-columns: 30% 1fr;
  height: 100vh;
  max-width: 1600px;
  margin: 0 auto;
  background: var(--wa-panel);
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.18);
}

/* ─── Sidebar ─── */

.sidebar {
  display: flex;
  flex-direction: column;
  background: var(--wa-panel);
  border-right: 1px solid var(--wa-border);
}

.sidebar-header {
  padding: 10px 16px;
  background: var(--wa-side-bg);
  border-bottom: 1px solid var(--wa-border);
}

.me {
  display: flex;
  align-items: center;
  gap: 12px;
}

.me-name {
  font-weight: 600;
  font-size: 14px;
}

.me-status {
  font-size: 12px;
  color: var(--wa-text-soft);
}

.avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  color: #fff;
  font-size: 14px;
  flex-shrink: 0;
}

.avatar-me {
  background: linear-gradient(135deg, #94a3b8, #64748b);
  font-size: 18px;
}

.avatar-bot {
  background: linear-gradient(135deg, #14b8a6, #0d9488);
  font-size: 13px;
  letter-spacing: 0.5px;
}

.search {
  padding: 8px 12px;
  background: var(--wa-panel);
  border-bottom: 1px solid var(--wa-border);
}

.search input {
  width: 100%;
  padding: 8px 12px;
  border-radius: 8px;
  border: none;
  background: var(--wa-side-bg);
  font-size: 13px;
  color: var(--wa-text-soft);
}

.chat-list {
  list-style: none;
  padding: 0;
  margin: 0;
  flex: 1;
  overflow-y: auto;
}

.chat-item {
  display: flex;
  gap: 12px;
  padding: 12px 16px;
  cursor: pointer;
  border-bottom: 1px solid var(--wa-border);
  transition: background 0.15s;
}

.chat-item.active,
.chat-item:hover {
  background: var(--wa-side-bg);
}

.chat-meta {
  flex: 1;
  min-width: 0;
}

.chat-top {
  display: flex;
  justify-content: space-between;
  font-size: 14px;
  margin-bottom: 3px;
}

.chat-name {
  font-weight: 500;
  color: var(--wa-text);
}

.chat-time {
  font-size: 12px;
  color: var(--wa-text-soft);
  flex-shrink: 0;
}

.chat-preview {
  font-size: 13px;
  color: var(--wa-text-soft);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar-footer {
  padding: 10px 16px;
  font-size: 11px;
  color: var(--wa-text-soft);
  border-top: 1px solid var(--wa-border);
  background: var(--wa-side-bg);
  text-align: center;
}

.sidebar-footer a {
  color: var(--wa-link);
  text-decoration: none;
}

/* ─── Chat panel ─── */

.chat {
  display: flex;
  flex-direction: column;
  background-color: var(--wa-bg);
  /* WhatsApp-like doodle background */
  background-image:
    radial-gradient(rgba(0, 0, 0, 0.04) 1px, transparent 1px),
    radial-gradient(rgba(0, 0, 0, 0.025) 1px, transparent 1px);
  background-size: 18px 18px, 36px 36px;
  background-position: 0 0, 9px 9px;
}

.chat-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  background: var(--wa-side-bg);
  border-bottom: 1px solid var(--wa-border);
}

.chat-header-name {
  font-weight: 600;
  font-size: 15px;
}

.chat-header-status {
  font-size: 12px;
  color: var(--wa-text-soft);
}

.messages {
  flex: 1;
  overflow-y: auto;
  padding: 16px 6%;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.msg-day {
  align-self: center;
  background: rgba(225, 245, 254, 0.92);
  color: var(--wa-text-soft);
  padding: 5px 12px;
  border-radius: 8px;
  font-size: 12px;
  font-weight: 500;
  margin: 8px 0 12px;
  box-shadow: var(--wa-shadow);
}

.msg {
  max-width: 65%;
  padding: 7px 10px 8px;
  border-radius: 8px;
  font-size: 14.2px;
  line-height: 19px;
  position: relative;
  box-shadow: var(--wa-shadow);
  white-space: pre-wrap;
  word-wrap: break-word;
}

.msg.in {
  align-self: flex-start;
  background: var(--wa-bubble-in);
  border-top-left-radius: 0;
}

.msg.out {
  align-self: flex-end;
  background: var(--wa-bubble-out);
  border-top-right-radius: 0;
}

.msg .time {
  font-size: 11px;
  color: var(--wa-text-soft);
  float: right;
  margin: 6px -3px -4px 8px;
}

.msg b,
.msg strong {
  font-weight: 600;
}

.msg em,
.msg i {
  font-style: italic;
}

.msg a {
  color: var(--wa-link);
  word-break: break-all;
}

.typing {
  align-self: flex-start;
  background: var(--wa-bubble-in);
  padding: 10px 14px;
  border-radius: 8px;
  border-top-left-radius: 0;
  box-shadow: var(--wa-shadow);
  display: inline-flex;
  gap: 4px;
}

.typing span {
  width: 6px;
  height: 6px;
  background: #b0b3b8;
  border-radius: 50%;
  animation: typing 1.2s infinite ease-in-out;
}

.typing span:nth-child(2) {
  animation-delay: 0.15s;
}

.typing span:nth-child(3) {
  animation-delay: 0.3s;
}

@keyframes typing {
  0%,
  60%,
  100% {
    transform: translateY(0);
    opacity: 0.4;
  }
  30% {
    transform: translateY(-3px);
    opacity: 1;
  }
}

/* ─── Composer ─── */

.composer {
  display: flex;
  gap: 10px;
  padding: 10px 16px;
  background: var(--wa-side-bg);
  border-top: 1px solid var(--wa-border);
}

.composer input {
  flex: 1;
  padding: 10px 14px;
  border-radius: 22px;
  border: none;
  font-size: 14.5px;
  background: #fff;
  outline: none;
}

.composer button {
  width: 44px;
  height: 44px;
  border: none;
  border-radius: 50%;
  background: var(--wa-green);
  color: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s;
}

.composer button:hover {
  background: var(--wa-green-dark);
}

@media (max-width: 800px) {
  .app {
    grid-template-columns: 1fr;
  }
  .sidebar {
    display: none;
  }
  .messages {
    padding: 12px 12px;
  }
  .msg {
    max-width: 85%;
  }
}