/* =========================================================
   ARISA · LAST LIVE — 편지 작성 화면 (letters.css)
   화면 구조·편지지·버튼 배치는 기존 편지 작성 화면 그대로, 색만 아리사 핑크입니다.
   공통 색·배경·이모지는 arisa-theme.css 에 있습니다.
   ========================================================= */

/* ---------- 페이지 뼈대 ---------- */
.page {
  position: relative;
  z-index: 2;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: max(12px, env(safe-area-inset-top)) 16px max(20px, env(safe-area-inset-bottom));
}

.top-bar {
  width: 100%;
  max-width: 600px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.lang-switch {
  display: flex;
  gap: 6px;
  margin-left: auto;
}

.content {
  flex: 1 0 auto;
  width: 100%;
  max-width: 600px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 14px 0 6px;
}

/* ---------- 제목 카드 ---------- */
.card--hero {
  padding-top: 24px;
  padding-bottom: 24px;
  overflow: hidden;
  text-align: center;
}

.card--hero::before {
  content: "";
  position: absolute;
  top: -60px;
  left: 50%;
  width: 240px;
  height: 120px;
  transform: translateX(-50%);
  background: radial-gradient(ellipse at center, rgba(255, 207, 226, 0.7), rgba(255, 207, 226, 0) 70%);
  pointer-events: none;
}

.hero-title {
  position: relative;
  margin-top: 12px;
  font-size: clamp(1.55rem, 7vw, 2.05rem);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.hero-subtitle {
  position: relative;
  margin-top: 10px;
  color: var(--arisa-rose);
  font-size: 1rem;
  font-weight: 600;
}

.hero-lead {
  position: relative;
  margin-top: 4px;
  color: var(--arisa-text-sub);
  font-size: 0.9rem;
}

/* ---------- 핑크 봉투 + 로즈 하트 봉인 ---------- */
.mini-envelope {
  position: relative;
  width: 84px;
  aspect-ratio: 3 / 2;
  margin: 0 auto;
  animation: envelope-float 6s ease-in-out infinite alternate;
}

.mini-envelope > span {
  position: absolute;
}

.mini-envelope__back {
  inset: 0;
  border-radius: 9px;
  background: linear-gradient(180deg, #F8E0EA, #EFC6D8);
  box-shadow: 0 6px 16px rgba(145, 55, 94, 0.18);
}

.mini-envelope__front {
  inset: 0;
  border-radius: 9px;
  background: linear-gradient(160deg, #FDEFF4, #F6D8E5);
  clip-path: polygon(0 0, 50% 56%, 100% 0, 100% 100%, 0 100%);
}

.mini-envelope__flap {
  top: 0;
  left: 0;
  right: 0;
  height: 60%;
  border-radius: 9px 9px 0 0;
  background: linear-gradient(180deg, #F2CBDC, #E9B7CD);
  clip-path: polygon(0 0, 100% 0, 50% 100%);
}

.mini-envelope__seal {
  top: 60%;
  left: 50%;
  display: grid;
  place-items: center;
  width: 24px;
  height: 24px;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background: var(--arisa-rose);
  color: #fff;
  font-size: 0.72rem;
  line-height: 1;
  box-shadow: 0 3px 8px rgba(173, 62, 108, 0.42);
}

.mini-envelope--sent {
  width: 96px;
}

@keyframes envelope-float {
  from { transform: translateY(2px); }
  to { transform: translateY(-4px); }
}

/* ---------- 편지 카드 ---------- */
.card--letter {
  padding: 24px 20px 22px;
}

.letter-to {
  color: var(--arisa-rose);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.22em;
}

.letter-form {
  display: flex;
  flex-direction: column;
  gap: 18px;
  margin-top: 14px;
}

.field-optional {
  color: var(--arisa-text-sub);
  font-size: 0.8rem;
  font-weight: 500;
}

.field-count,
.field-meta {
  color: var(--arisa-text-sub);
  font-size: 0.78rem;
  font-variant-numeric: tabular-nums;
}

.field-meta {
  text-align: right;
}

.field-count.is-over,
.field-meta.is-over {
  color: var(--arisa-danger);
  font-weight: 700;
}

.form-status {
  color: var(--arisa-text-sub);
  font-size: 0.84rem;
  text-align: center;
}

/* 편지지: 따뜻한 아이보리 위에 옅은 가로줄이 글자 행간(30px)과 맞고, 스크롤하면 줄도 함께 움직임 */
.paper {
  position: relative;
}

.paper-input {
  display: block;
  width: 100%;
  min-height: calc(var(--paper-line) * 8 + var(--paper-pad-y) * 2);
  max-height: 62vh;
  padding: var(--paper-pad-y) 18px;
  border: 1px solid var(--arisa-line);
  border-radius: var(--radius-md);
  background-color: var(--arisa-paper);
  background-image: repeating-linear-gradient(
    to bottom,
    transparent 0,
    transparent calc(var(--paper-line) - 1px),
    var(--arisa-paper-line) calc(var(--paper-line) - 1px),
    var(--arisa-paper-line) var(--paper-line)
  );
  background-attachment: local;
  background-position: 0 var(--paper-pad-y);
  background-size: 100% var(--paper-line);
  font-size: 16px;
  line-height: var(--paper-line);
  resize: vertical;
  overflow-y: auto;
  overflow-wrap: anywhere;
  white-space: pre-wrap;
  box-shadow: inset 0 1px 3px rgba(145, 55, 94, 0.06);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-notes {
  display: grid;
  gap: 4px;
  padding: 12px 16px;
  border: 1px solid rgba(255, 255, 255, 0.85);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.62);
  color: var(--arisa-text-sub);
  font-size: 0.84rem;
  list-style: none;
}

.form-notes li::before,
.guide-list li::before {
  content: "·";
  content: "·" / "";
  margin-right: 6px;
  color: var(--arisa-pink);
  font-weight: 800;
}

/* ---------- 결과 화면 (보냄 / 제한 중) ---------- */
.result-panel {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  margin-top: 16px;
  padding: 18px 8px 6px;
  text-align: center;
}

.result-title {
  margin-top: 10px;
  font-size: clamp(1.2rem, 5.4vw, 1.4rem);
  font-weight: 800;
  line-height: 1.4;
}

.result-title:focus {
  outline: none;
}

.result-title:focus-visible {
  outline: 3px solid var(--arisa-rose);
  outline-offset: 4px;
  border-radius: 8px;
}

.result-title::after {
  content: "";
  display: block;
  width: 48px;
  height: 3px;
  margin: 10px auto 4px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--arisa-pink), var(--arisa-cream));
}

.result-text,
.result-hint {
  color: var(--arisa-text-sub);
  font-size: 0.92rem;
}

.result-next {
  margin-top: 8px;
  font-size: 0.92rem;
  font-weight: 600;
}

.result-next time {
  color: var(--arisa-rose);
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.result-remaining {
  padding: 4px 16px;
  border: 1px solid rgba(255, 255, 255, 0.85);
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.7);
  color: var(--arisa-text-sub);
  font-size: 0.84rem;
}

.remaining {
  color: var(--arisa-text);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.result-hint {
  margin-top: 6px;
  font-size: 0.82rem;
}

/* ---------- 안내 카드 ---------- */
.card--guide {
  padding: 20px 20px 18px;
}

.guide-title {
  color: var(--arisa-rose);
  font-size: 0.98rem;
  font-weight: 800;
}

.guide-list {
  display: grid;
  gap: 6px;
  margin-top: 10px;
  padding: 0;
  color: var(--arisa-text-sub);
  font-size: 0.86rem;
  list-style: none;
}

/* ---------- 푸터 ---------- */
.site-footer {
  width: 100%;
  max-width: 600px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding-top: 12px;
  text-align: center;
}

.utility {
  margin-bottom: 10px;
}

.footer-name {
  color: var(--arisa-rose);
  font-size: 0.84rem;
  font-weight: 700;
}

.footer-line {
  color: var(--arisa-text-sub);
  font-size: 0.76rem;
}

/* ---------- 화면 크기 ---------- */
@media (max-width: 360px) {
  .card { padding-left: 16px; padding-right: 16px; }
  .paper-input { padding-left: 14px; padding-right: 14px; }
}

@media (min-width: 768px) {
  .page { padding: 20px 28px 28px; }
  .card { padding-left: 28px; padding-right: 28px; }
}