/* ============================================
   ISH - 임성한 말투 변환기
   Design: Black Gold Makjang — 결혼작사 이혼작곡 스타일
   Mobile-first, max-width 480px
   ============================================ */

/* --- Reset & Base --- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --black:       #060608;
  --black-card:  #0E0C12;
  --black-input: rgba(255,255,255,0.04);
  --gold:        #C9A84C;
  --gold-light:  #F0D878;
  --gold-dark:   #8B6020;
  --gold-glow:   rgba(201,168,76,0.18);
  --cream:       #EDE3CC;
  --cream-muted: #A89880;
  --cream-dim:   #5A4E3C;
  --feather:     #10101A;

  --font-sans:  'Noto Sans KR', -apple-system, sans-serif;
  --font-serif: 'Noto Serif KR', Georgia, serif;

  --r-sm: 4px;
  --r-md: 8px;
  --r-lg: 14px;

  --shadow-gold: 0 0 32px rgba(201,168,76,0.20), 0 4px 16px rgba(0,0,0,0.8);
  --shadow-card: 0 8px 48px rgba(0,0,0,0.9), 0 2px 8px rgba(0,0,0,0.6);
  --t-fast:   150ms ease;
  --t-normal: 300ms cubic-bezier(0.16,1,0.3,1);
}

html { font-size: 16px; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font-sans);
  background: var(--black);
  color: var(--cream);
  min-height: 100dvh;
  line-height: 1.6;
  overflow-x: hidden;
}

/* ============================================
   배경 레이어
   ============================================ */

/* 심층 그라데이션 배경 */
.bg-depth {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%,   #12101C 0%, transparent 70%),
    radial-gradient(ellipse 60% 40% at 10% 90%,  #0D0B16 0%, transparent 60%),
    radial-gradient(ellipse 50% 50% at 90% 80%,  #0A0810 0%, transparent 60%),
    linear-gradient(180deg, #080610 0%, #060608 50%, #040406 100%);
}

/* 골드 하단 빛 */
.bg-glow {
  position: fixed;
  bottom: -80px;
  left: 50%;
  transform: translateX(-50%);
  width: 320px;
  height: 160px;
  background: radial-gradient(ellipse, rgba(201,168,76,0.12) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

/* 상단 엷은 빛 */
.bg-glow-top {
  position: fixed;
  top: -60px;
  left: 50%;
  transform: translateX(-50%);
  width: 280px;
  height: 120px;
  background: radial-gradient(ellipse, rgba(201,168,76,0.07) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

/* ============================================
   깃털 장식 (CSS-only)
   ============================================ */
.bg-feathers {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  overflow: hidden;
}

.feather {
  position: absolute;
  background: linear-gradient(135deg, #14121E 0%, #0C0A14 50%, #181525 100%);
  border-radius: 50% 4% 50% 4%;
  opacity: 0;
  animation: featherDrift linear infinite;
}

/* 개별 깃털 위치/크기/각도 */
.f1  { width:28px; height:90px;  top:5%;   left:3%;   transform:rotate(-30deg); opacity:.35; animation:none; }
.f2  { width:20px; height:70px;  top:12%;  left:8%;   transform:rotate(15deg);  opacity:.25; animation:none; }
.f3  { width:24px; height:80px;  top:2%;   right:5%;  transform:rotate(40deg);  opacity:.30; animation:none; }
.f4  { width:18px; height:60px;  top:18%;  right:3%;  transform:rotate(-20deg); opacity:.20; animation:none; }
.f5  { width:32px; height:100px; top:35%;  left:-2%;  transform:rotate(10deg);  opacity:.25; animation:none; }
.f6  { width:22px; height:75px;  top:42%;  right:-1%; transform:rotate(-45deg); opacity:.20; animation:none; }
.f7  { width:26px; height:85px;  top:60%;  left:5%;   transform:rotate(-15deg); opacity:.30; animation:none; }
.f8  { width:20px; height:65px;  top:55%;  right:6%;  transform:rotate(30deg);  opacity:.22; animation:none; }
.f9  { width:30px; height:95px;  top:75%;  left:1%;   transform:rotate(55deg);  opacity:.28; animation:none; }
.f10 { width:18px; height:58px;  top:80%;  right:2%;  transform:rotate(-35deg); opacity:.18; animation:none; }
.f11 { width:14px; height:48px;  top:88%;  left:12%;  transform:rotate(20deg);  opacity:.20; animation:none; }
.f12 { width:16px; height:52px;  top:90%;  right:14%; transform:rotate(-10deg); opacity:.22; animation:none; }
.f13 { width:22px; height:72px;  top:25%;  left:15%;  transform:rotate(-60deg); opacity:.15; animation:none; }
.f14 { width:20px; height:68px;  top:65%;  right:18%; transform:rotate(50deg);  opacity:.18; animation:none; }

/* 깃털에 섬세한 라인 질감 */
.feather::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 8%;
  bottom: 8%;
  width: 1px;
  background: linear-gradient(180deg, transparent, rgba(201,168,76,0.08), transparent);
  transform: translateX(-50%);
}

/* 낙하 애니메이션 (일부 깃털) */
.f-fall {
  animation: featherFall 8s ease-in-out infinite !important;
  opacity: 0 !important;
}
.f3.f-fall  { animation-delay: 0s;   left:15%;  top:-10%; }
.f8.f-fall  { animation-delay: 3s;   right:20%; top:-10%; }
.f11.f-fall { animation-delay: 6s;   left:40%;  top:-10%; }

@keyframes featherFall {
  0%   { transform: rotate(10deg) translateY(0);    opacity: 0; }
  10%  { opacity: 0.25; }
  90%  { opacity: 0.15; }
  100% { transform: rotate(25deg) translateY(110vh); opacity: 0; }
}

/* 레터박스 골드 라인 */
body::before,
body::after {
  content: '';
  position: fixed;
  left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, var(--gold-dark) 15%, var(--gold) 50%, var(--gold-dark) 85%, transparent 100%);
  z-index: 100;
  pointer-events: none;
}
body::before { top: 0; }
body::after  { bottom: 0; }

/* ============================================
   컨테이너
   ============================================ */
.container {
  position: relative;
  z-index: 2;
  max-width: 480px;
  margin: 0 auto;
  padding: 0 22px;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

/* ============================================
   헤더
   ============================================ */
.header {
  text-align: center;
  padding: 56px 0 32px;
}

.logo-area {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

/* 상단 장식 선 */
.logo-area::before {
  content: '— ✦ —';
  font-size: 0.75rem;
  letter-spacing: 0.5em;
  color: var(--gold);
  opacity: 0.6;
}

.logo-title {
  font-family: var(--font-serif);
  font-size: clamp(1.9rem, 7vw, 2.6rem);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: 0.02em;
  word-break: keep-all;
  color: var(--cream);
  text-shadow:
    0 0 40px rgba(201,168,76,0.25),
    0 2px 16px rgba(0,0,0,1);
}

.logo-title-accent {
  background: linear-gradient(135deg, var(--gold-light) 0%, var(--gold) 40%, var(--gold-dark) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* 피비체 배지 */
.subtitle-strip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid rgba(201,168,76,0.4);
  padding: 5px 16px;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--gold);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  background: rgba(201,168,76,0.06);
}

.subtitle-strip::before,
.subtitle-strip::after {
  content: '✦';
  font-size: 0.5rem;
  opacity: 0.6;
}

.tagline {
  font-family: var(--font-serif);
  font-size: 0.9rem;
  color: var(--cream-muted);
  line-height: 1.7;
  letter-spacing: 0.01em;
}

/* 하단 장식 선 */
.header-divider {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 4px;
}

.header-divider::before,
.header-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(201,168,76,0.35));
}

.header-divider::after {
  background: linear-gradient(270deg, transparent, rgba(201,168,76,0.35));
}

.header-divider span {
  font-size: 0.6rem;
  color: var(--gold);
  opacity: 0.5;
  letter-spacing: 0.2em;
}

/* ============================================
   메인
   ============================================ */
.main { flex: 1; }

/* 입력 섹션 */
.input-section { margin-bottom: 20px; }

.textarea-wrap {
  position: relative;
  margin-bottom: 12px;
}

.input-textarea {
  width: 100%;
  min-height: 124px;
  padding: 16px 16px 36px;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--cream);
  background: var(--black-input);
  border: 1px solid rgba(201,168,76,0.2);
  border-radius: var(--r-md);
  resize: vertical;
  transition: border-color var(--t-fast), box-shadow var(--t-fast), background var(--t-fast);
  backdrop-filter: blur(8px);
}

.input-textarea::placeholder { color: var(--cream-dim); }

.input-textarea:focus {
  outline: none;
  border-color: rgba(201,168,76,0.6);
  background: rgba(255,255,255,0.05);
  box-shadow: 0 0 0 3px rgba(201,168,76,0.08), 0 0 24px rgba(201,168,76,0.06);
}

.char-count {
  position: absolute;
  bottom: 11px;
  right: 13px;
  font-size: 0.70rem;
  color: var(--cream-dim);
  pointer-events: none;
  display: flex;
  align-items: center;
  gap: 6px;
}

.char-hint {
  color: var(--gold);
  font-size: 0.67rem;
  font-weight: 700;
}

/* 변환 버튼 */
.convert-btn {
  width: 100%;
  padding: 15px 24px;
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 900;
  color: #080608;
  background: linear-gradient(135deg, var(--gold-light) 0%, var(--gold) 45%, var(--gold-dark) 100%);
  border: none;
  border-radius: var(--r-md);
  cursor: pointer;
  box-shadow: var(--shadow-gold);
  letter-spacing: 0.08em;
  transition: transform var(--t-fast), box-shadow var(--t-fast), opacity var(--t-fast);
  position: relative;
  overflow: hidden;
}

.convert-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.3) 0%, transparent 50%);
  opacity: 0;
  transition: opacity var(--t-normal);
}

.convert-btn:not(:disabled):hover::before  { opacity: 1; }
.convert-btn:not(:disabled):hover {
  transform: translateY(-2px);
  box-shadow: 0 0 48px rgba(201,168,76,0.45), 0 8px 24px rgba(0,0,0,0.7);
}
.convert-btn:not(:disabled):active { transform: translateY(0); }

.convert-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  box-shadow: none;
}

.convert-btn .btn-text,
.convert-btn .btn-loading { position: relative; z-index: 1; }

/* 스피너 */
.spinner {
  display: inline-block;
  width: 15px; height: 15px;
  border: 2px solid rgba(8,6,8,0.3);
  border-top-color: #080608;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  vertical-align: middle;
  margin-right: 6px;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ============================================
   결과 카드
   ============================================ */
.result-section {
  margin-bottom: 24px;
  animation: slideUp 0.45s var(--t-normal);
}

@keyframes slideUp {
  from { opacity:0; transform:translateY(28px); }
  to   { opacity:1; transform:translateY(0); }
}

.result-card {
  background: var(--black-card);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  border: 1px solid rgba(201,168,76,0.18);
}

.result-header {
  padding: 14px 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  border-bottom: 1px solid rgba(201,168,76,0.12);
  background: linear-gradient(135deg, rgba(201,168,76,0.07) 0%, transparent 60%);
}

.result-badge {
  display: inline-block;
  padding: 3px 10px;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: #080608;
  background: linear-gradient(135deg, var(--gold-light), var(--gold));
  border-radius: 2px;
}

.result-title {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--cream-muted);
  letter-spacing: 0.04em;
}

.result-body { padding: 24px 20px; }

.result-quote {
  padding-left: 16px;
  border-left: 2px solid var(--gold);
}

.result-text {
  font-family: var(--font-serif);
  font-size: 1rem;
  line-height: 2.1;
  color: var(--cream);
  white-space: pre-wrap;
  word-break: keep-all;
  text-shadow: 0 1px 6px rgba(0,0,0,0.5);
}

.result-actions {
  display: flex;
  gap: 8px;
  padding: 0 20px 20px;
}

.action-btn {
  flex: 1;
  padding: 11px 16px;
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 700;
  border: none;
  border-radius: var(--r-sm);
  cursor: pointer;
  transition: transform var(--t-fast), background var(--t-fast);
  letter-spacing: 0.03em;
}

.action-btn:active { transform: scale(0.97); }

.retry-btn {
  color: var(--cream-muted);
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.08);
}
.retry-btn:hover { background: rgba(255,255,255,0.09); }

.copy-btn {
  color: #080608;
  background: linear-gradient(135deg, var(--gold-light), var(--gold));
  box-shadow: 0 2px 16px rgba(201,168,76,0.3);
}
.copy-btn:hover { box-shadow: 0 4px 24px rgba(201,168,76,0.5); }

/* ============================================
   공유 버튼
   ============================================ */
.share-actions {
  padding: 0 20px 20px;
  border-top: 1px solid rgba(201,168,76,0.08);
  margin-top: -4px;
  padding-top: 16px;
}

.share-label {
  font-size: 0.68rem;
  color: var(--cream-dim);
  letter-spacing: 0.15em;
  margin-bottom: 10px;
  text-align: center;
}

.share-btns {
  display: flex;
  gap: 8px;
}

.share-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  padding: 9px 8px;
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 700;
  border: none;
  border-radius: var(--r-sm);
  cursor: pointer;
  transition: transform var(--t-fast), opacity var(--t-fast);
  letter-spacing: 0.02em;
}

.share-btn:active { transform: scale(0.96); }

.share-kakao {
  background: rgba(254,229,0,0.10);
  border-color: rgba(254,229,0,0.35);
  color: #FEE500;
}
.share-kakao:hover { background: rgba(254,229,0,0.20); border-color: #FEE500; }

.save-image {
  color: var(--cream-muted);
  background: rgba(201,168,76,0.1);
  border: 1px solid rgba(201,168,76,0.25);
}
.save-image:hover { background: rgba(201,168,76,0.18); }

.share-native {
  color: #080608;
  background: linear-gradient(135deg, var(--gold-light), var(--gold));
}

.share-twitter {
  color: var(--cream);
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.1);
}
.share-twitter:hover { background: rgba(255,255,255,0.12); }

.share-copy {
  color: var(--cream-muted);
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.08);
}
.share-copy:hover { background: rgba(255,255,255,0.09); }

/* ============================================
   이미지 저장용 오프스크린 카드
   ============================================ */
.share-card-export {
  position: fixed;
  left: -9999px;
  top: 0;
  width: 480px;
  background: linear-gradient(160deg, #12101C 0%, #0A0810 100%);
  padding: 48px 40px;
  display: flex;
  flex-direction: column;
  gap: 28px;
  border: 1px solid rgba(201,168,76,0.25);
}

.sce-top {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
}

.sce-mark {
  color: var(--gold);
  font-size: 0.75rem;
  opacity: 0.7;
}

.sce-title {
  font-family: 'Noto Serif KR', serif;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--gold);
  letter-spacing: 0.1em;
  opacity: 0.8;
}

.sce-body {
  padding: 0 8px 0 20px;
  border-left: 3px solid var(--gold);
}

.sce-text {
  font-family: 'Noto Serif KR', serif;
  font-size: 1.15rem;
  line-height: 2.1;
  color: var(--cream);
  white-space: pre-wrap;
  word-break: keep-all;
}

.sce-footer {
  text-align: right;
}

.sce-url {
  font-size: 0.70rem;
  color: var(--cream-dim);
  letter-spacing: 0.06em;
  opacity: 0.6;
}

/* ============================================
   광고 영역
   ============================================ */
.ad-section {
  margin-bottom: 16px;
  text-align: center;
}

.ad-label {
  font-size: 0.60rem;
  color: var(--cream-dim);
  letter-spacing: 0.2em;
  margin-bottom: 6px;
  opacity: 0.5;
}

.ad-placeholder {
  background: rgba(255,255,255,0.03);
  border: 1px dashed rgba(201,168,76,0.15);
  border-radius: var(--r-sm);
  padding: 14px;
  font-size: 0.70rem;
  color: var(--cream-dim);
  opacity: 0.4;
}

/* ============================================
   에러
   ============================================ */
.error-msg {
  margin-top: 12px;
  padding: 12px 16px;
  font-size: 0.83rem;
  color: #F48FB1;
  background: rgba(244,143,177,0.08);
  border-radius: var(--r-sm);
  border-left: 2px solid #F48FB1;
}

/* ============================================
   토스트
   ============================================ */
.toast {
  position: fixed;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  padding: 11px 28px;
  font-size: 0.82rem;
  font-weight: 700;
  color: #080608;
  background: linear-gradient(135deg, var(--gold-light), var(--gold));
  border-radius: 2px;
  box-shadow: 0 4px 20px rgba(201,168,76,0.4);
  opacity: 0;
  transition: opacity 0.3s, transform 0.3s;
  z-index: 1000;
  pointer-events: none;
  letter-spacing: 0.06em;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ============================================
   예시 카드
   ============================================ */
.examples-wrap {
  margin-bottom: 14px;
}

.examples-label {
  font-size: 0.68rem;
  color: var(--gold-dark);
  letter-spacing: 0.08em;
  margin-bottom: 10px;
  text-align: center;
}

.examples-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
}

.example-chip {
  background: rgba(201,168,76,0.06);
  border: 1px solid rgba(201,168,76,0.22);
  border-radius: 20px;
  color: var(--cream-muted);
  font-family: var(--font-sans);
  font-size: 0.75rem;
  padding: 6px 14px;
  cursor: pointer;
  transition: background var(--t-fast), color var(--t-fast), border-color var(--t-fast);
  white-space: nowrap;
}

.example-chip:hover,
.example-chip:focus-visible {
  background: rgba(201,168,76,0.14);
  border-color: var(--gold);
  color: var(--gold-light);
  outline: none;
}

/* ============================================
   푸터
   ============================================ */
.footer {
  text-align: center;
  padding: 28px 0 24px;
  margin-top: auto;
  border-top: 1px solid rgba(201,168,76,0.10);
}

.footer-text {
  font-family: var(--font-serif);
  font-size: 0.78rem;
  color: var(--gold);
  opacity: 0.5;
  margin-bottom: 6px;
}

.footer-sub {
  font-size: 0.68rem;
  color: var(--cream-dim);
  line-height: 1.6;
  max-width: 300px;
  margin: 0 auto 4px;
}

.footer-copy {
  font-size: 0.60rem;
  color: var(--cream-dim);
  opacity: 0.5;
}

/* ============================================
   반응형
   ============================================ */
@media (min-width: 768px) {
  .header { padding: 72px 0 40px; }
  .logo-title { font-size: 2.8rem; }
  .input-textarea { min-height: 140px; }
}