*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  min-height: 100%;
}

body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: #0f1115;
  color: #e8eaed;
}

.landing {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 1.5rem;
}

.landing-card {
  max-width: 28rem;
  padding: 2rem;
  background: #1a1d24;
  border-radius: 12px;
  border: 1px solid #2a2f3a;
}

.landing-card h1 {
  margin: 0 0 0.5rem;
  font-size: 1.75rem;
}

.landing-card p {
  margin: 0.5rem 0;
  color: #9aa0a6;
  line-height: 1.5;
}

.landing-example code {
  background: #252830;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  color: #8ab4f8;
}

.landing-form {
  display: flex;
  gap: 0.5rem;
  margin-top: 1.25rem;
}

.landing-form input {
  flex: 1;
  padding: 0.6rem 0.75rem;
  border: 1px solid #3c4043;
  border-radius: 8px;
  background: #252830;
  color: inherit;
  font-size: 1rem;
}

.landing-form button {
  padding: 0.6rem 1rem;
  border: none;
  border-radius: 8px;
  background: #8ab4f8;
  color: #0f1115;
  font-weight: 600;
  cursor: pointer;
}

.page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 1rem;
}

.phone {
  width: min(390px, 100vw - 2rem);
  height: min(780px, 92vh);
  display: flex;
  flex-direction: column;
  border-radius: 40px;
  overflow: hidden;
  box-shadow:
    0 24px 80px rgba(0, 0, 0, 0.5),
    0 0 0 2px rgba(255, 255, 255, 0.06);
  position: relative;
}

.phone-header {
  flex-shrink: 0;
  padding: 0.75rem 1rem 0.5rem;
}

.header-main {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}

.header-contact {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  min-width: 0;
}

.contact-avatar {
  font-size: 1.5rem;
}

.contact-info {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.contact-name {
  font-weight: 600;
  font-size: 1rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.contact-sub {
  font-size: 0.75rem;
  opacity: 0.7;
}

.session-label {
  margin: 0.35rem 0 0;
  font-size: 0.7rem;
  opacity: 0.55;
}

.session-label code {
  font-size: 0.7rem;
}

.theme-toggle {
  display: flex;
  border-radius: 8px;
  overflow: hidden;
  flex-shrink: 0;
}

.theme-btn {
  padding: 0.35rem 0.6rem;
  border: none;
  font-size: 0.7rem;
  font-weight: 600;
  cursor: pointer;
  background: rgba(128, 128, 128, 0.25);
  color: inherit;
  opacity: 0.7;
}

.theme-btn.active {
  opacity: 1;
}

.messages {
  flex: 1;
  overflow-y: auto;
  padding: 0.75rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.messages-empty {
  margin: auto;
  text-align: center;
  font-size: 0.85rem;
  opacity: 0.5;
  max-width: 16rem;
}

.bubble-row {
  display: flex;
  width: 100%;
}

.bubble-row.incoming {
  justify-content: flex-start;
}

.bubble-row.outgoing {
  justify-content: flex-end;
}

.bubble {
  max-width: 78%;
  position: relative;
}

.bubble-sender {
  display: block;
  font-size: 0.7rem;
  font-weight: 600;
  margin-bottom: 0.15rem;
  opacity: 0.85;
}

.bubble-body {
  margin: 0;
  word-wrap: break-word;
  white-space: pre-wrap;
}

.bubble-time {
  display: block;
  font-size: 0.65rem;
  margin-top: 0.2rem;
  opacity: 0;
  transition: opacity 0.15s;
}

.bubble:hover .bubble-time {
  opacity: 0.65;
}

.phone-footer {
  flex-shrink: 0;
  padding: 0.5rem 0.75rem 1rem;
}

.reply-form {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.reply-form input {
  flex: 1;
  padding: 0.55rem 0.85rem;
  border: none;
  border-radius: 999px;
  font-size: 1rem;
  outline: none;
}

.reply-form button {
  width: 2.25rem;
  height: 2.25rem;
  border: none;
  border-radius: 50%;
  font-size: 1.1rem;
  font-weight: 700;
  cursor: pointer;
  flex-shrink: 0;
}

/* Theme visibility helpers */
.ios-only {
  display: none;
}

.android-only {
  display: none;
}

html[data-theme="ios"] .ios-only {
  display: block;
}

html[data-theme="ios"] span.ios-only,
html[data-theme="ios"] .contact-sub.ios-only {
  display: inline;
}

html[data-theme="android"] .android-only {
  display: block;
}

html[data-theme="android"] span.android-only,
html[data-theme="android"] .contact-sub.android-only {
  display: inline;
}

html[data-theme="android"] .phone-status.android-only {
  display: flex;
}