/* =========================================================================
   Telegram Chat Chrome — stylesheet
   Shared by ui_kits/telegram_chat/ and ui_kits/portfolio_page/.
   Depends on /colors_and_type.css for tokens.
   ========================================================================= */

/* ---------- Phone frame ---------- */

.tg-phone {
  position: relative;
  width: 360px;
  height: 780px;
  background: var(--tg-canvas);
  border: 6px solid var(--tg-bezel);
  border-radius: var(--r-phone);
  box-shadow: var(--shadow-phone);
  overflow: hidden;
  /* 1px inner highlight to suggest bezel */
  outline: 1px solid var(--tg-bezel-highlight);
  outline-offset: -7px;
  display: flex;
  flex-direction: column;
}

/* Notch */
.tg-phone::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 120px;
  height: 20px;
  background: var(--tg-bezel);
  border-bottom-left-radius: var(--r-notch);
  border-bottom-right-radius: var(--r-notch);
  z-index: 5;
}

/* ---------- Status bar ---------- */

.tg-statusbar {
  height: 32px;
  flex: 0 0 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px 0 24px;
  color: var(--fg1);
  font-size: var(--fs-statusbar);
  font-weight: var(--fw-semibold);
  background: var(--tg-canvas);
  position: relative;
  z-index: 2;
  /* give room past the notch */
  padding-top: 4px;
}

.tg-statusbar__time {
  font-variant-numeric: tabular-nums;
}

.tg-statusbar__icons {
  display: flex;
  align-items: center;
  gap: 6px;
  opacity: 0.6;
}

.tg-statusbar__icons svg {
  width: 16px;
  height: 16px;
  stroke: var(--fg1);
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* ---------- Chat header ---------- */

.tg-header {
  height: 56px;
  flex: 0 0 56px;
  background: var(--tg-surface);
  display: flex;
  align-items: center;
  padding: 0 10px 0 4px;
  gap: 10px;
  border-bottom: 1px solid var(--tg-divider);
}

.tg-header__avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: linear-gradient(160deg, #5BC0DE 0%, #4AA8CE 100%);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  letter-spacing: 0;
}

.tg-header__back,
.tg-header__menu {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--fg1);
  cursor: pointer;
}
.tg-header__back svg,
.tg-header__menu svg {
  width: 22px;
  height: 22px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.tg-header__identity {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 1px;
  line-height: 1.15;
}

.tg-header__name {
  color: var(--fg1);
  font-size: 17px;
  font-weight: var(--fw-semibold);
  display: flex;
  align-items: center;
  gap: 6px;
  letter-spacing: 0;
}

.tg-header__sub {
  color: var(--fg3);
  font-size: var(--fs-botlabel);
  font-weight: var(--fw-regular);
}

/* ---------- Chat area ---------- */

.tg-chat {
  flex: 1;
  min-height: 0;
  background-color: var(--tg-canvas);
  background-image: url("../../assets/doodle-pattern.svg");
  background-size: 260px 260px;
  background-repeat: repeat;
  padding: 12px 10px 8px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  overflow-y: auto;
  scrollbar-width: none;
}
.tg-chat::-webkit-scrollbar { display: none; }

/* When two consecutive bubbles come from the same sender, tighten the gap */
.tg-chat__group + .tg-chat__group--same {
  margin-top: -4px; /* 8px default → 4px effective */
}

/* ---------- Bubbles ---------- */

.tg-bubble {
  max-width: 78%;
  min-width: 72px;           /* always enough width for time */
  padding: 7px 12px 20px;
  /* Reserve horizontal space inside the text block for the absolute-positioned
     timestamp so short messages like "AR1" don't collide with it. */
  padding-right: 62px;       /* pippa: time only */
  color: var(--fg1);
  font-size: var(--fs-bubble);
  line-height: 1.38;
  position: relative;
  word-wrap: break-word;
  opacity: 0;
  transform: translateY(6px);
  transition: opacity var(--dur-fade) var(--ease-out),
              transform var(--dur-fade) var(--ease-out);
}

/* user bubbles show time + ticks, so reserve more room */
.tg-bubble--user {
  padding-right: 80px;
  min-width: 92px;
}
.tg-bubble.is-in {
  opacity: 1;
  transform: translateY(0);
}

.tg-bubble--pippa {
  background: var(--tg-bubble-in);
  border-radius: var(--r-bubble);
  border-bottom-left-radius: var(--r-bubble-tail);
  align-self: flex-start;
}

.tg-bubble--user {
  /* Each user bubble gets a flat fill interpolated along the gradient by --pos
     (0 = top blue, 1 = bottom violet), set on the element via inline style. */
  --_p: var(--pos, 0);
  /* simple rgb lerp — #3A7BD5 (58,123,213) → #6C4AB6 (108,74,182) */
  background-color: rgb(
    calc(58  + (108 - 58)  * var(--_p)),
    calc(123 + (74  - 123) * var(--_p)),
    calc(213 + (182 - 213) * var(--_p))
  );
  border-radius: var(--r-bubble);
  border-bottom-right-radius: var(--r-bubble-tail);
  align-self: flex-end;
}

/* when a bubble follows another from the same sender, square off the tail corner */
.tg-bubble--pippa.is-follow {
  border-top-left-radius: var(--r-bubble-tail);
  border-bottom-left-radius: var(--r-bubble);
}
.tg-bubble--user.is-follow {
  border-top-right-radius: var(--r-bubble-tail);
  border-bottom-right-radius: var(--r-bubble);
}

.tg-bubble__ts {
  position: absolute;
  right: 10px;
  bottom: 4px;
  color: var(--fg3);
  font-size: var(--fs-ts);
  font-weight: var(--fw-medium);
  font-variant-numeric: tabular-nums;
  pointer-events: none;
  display: inline-flex;
  align-items: center;
  gap: 3px;
}

.tg-bubble--user .tg-bubble__ts {
  color: rgba(255, 255, 255, 0.78);
}

.tg-bubble__ticks {
  display: inline-block;
  width: 14px;
  height: 10px;
  position: relative;
  color: #83C8F3; /* light blue read-ticks on user bubbles */
}
.tg-bubble__ticks::before,
.tg-bubble__ticks::after {
  content: "";
  position: absolute;
  left: 0;
  top: 1px;
  width: 9px;
  height: 6px;
  border-left: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(-52deg) skewX(8deg);
  border-bottom-left-radius: 1px;
}
.tg-bubble__ticks::after {
  left: 4px;
}

/* ---------- Typing indicator ---------- */

.tg-typing {
  align-self: flex-start;
  background: var(--tg-bubble-in);
  border-radius: var(--r-bubble);
  border-bottom-left-radius: var(--r-bubble-tail);
  padding: 12px 14px;
  display: flex;
  align-items: center;
  gap: 4px;
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 200ms var(--ease-out),
              transform 200ms var(--ease-out);
}
.tg-typing.is-in {
  opacity: 1;
  transform: translateY(0);
}

.tg-typing__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  animation: tg-typing-pulse 1400ms ease-in-out infinite;
}
.tg-typing__dot:nth-child(2) { animation-delay: 200ms; }
.tg-typing__dot:nth-child(3) { animation-delay: 400ms; }

@keyframes tg-typing-pulse {
  0%, 100% { opacity: 0.3; }
  50%      { opacity: 1;   }
}

/* ---------- Input bar ---------- */

.tg-input {
  height: 52px;
  flex: 0 0 52px;
  background: var(--tg-surface);
  display: flex;
  align-items: center;
  padding: 0 6px;
  gap: 2px;
  border-top: 1px solid var(--tg-divider);
}

.tg-input__btn {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--fg3);
  cursor: text;
}
.tg-input__btn svg {
  width: 22px;
  height: 22px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.tg-input__btn--send {
  width: 36px;
  height: 36px;
  margin-left: 2px;
  margin-right: 2px;
  background: var(--accent);
  border-radius: 50%;
  color: #fff;
}
.tg-input__btn--send svg {
  width: 20px;
  height: 20px;
  stroke-width: 2;
}

.tg-input__field {
  flex: 1;
  height: 36px;
  background: transparent;
  border: none;
  color: var(--fg2);
  font-family: var(--font-body);
  font-size: 15px;
  padding: 0 8px;
  outline: none;
}
.tg-input__field::placeholder {
  color: var(--fg3);
}

/* ---------- Reduced motion ---------- */

@media (prefers-reduced-motion: reduce) {
  .tg-bubble,
  .tg-typing {
    transition: none;
  }
  .tg-typing__dot {
    animation: none;
    opacity: 0.8;
  }
}