/* === Fonts === */
@font-face {
  font-family: 'OCR A';
  src: url('../../assets/fonts/ocr-a-regular.otf') format('opentype');
  font-display: swap;
}

/* === Tokens (synced with css/invitation.css) === */
:root {
  --color-bg:            #F9FFFE;
  --color-mint-pale:     #F2FCFB;
  --color-mint-bg:       #B8E0DB;
  --color-mint:          #81C7C0;
  --color-mint-dark:     #6BB8B0;
  --color-ink:           #2D2D2D;
  --color-ink-strong:    #000000;
  --color-gray-muted:    #888;
  --color-gray-line:     #E8F5F2;
  --color-warn:          #D97757;

  /* aliases for upload-local styles */
  --color-primary:       var(--color-mint);
  --color-primary-hover: var(--color-mint-dark);
  --color-secondary:     var(--color-mint-dark);
  --color-text:          var(--color-ink);
  --color-text-light:    var(--color-gray-muted);
  --color-accent:        var(--color-mint-bg);
  --color-border:        var(--color-mint-bg);
  --color-success:       #6BBF8A;
  --color-error:         #DA8189;
  --color-white:         #FFFFFF;

  --font-family: 'OCR A', 'Orbit', sans-serif;
  --font-sans:   'OCR A', 'Orbit', sans-serif;
  --radius:    12px;
  --radius-sm: 4px;
  --transition: 0.3s ease;
}

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

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

body {
  font-family: var(--font-family);
  background: var(--color-bg);
  color: var(--color-text);
  min-height: 100dvh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* === Loading (synced with css/invitation.css .loading) === */
.loading {
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 24px;
  background: var(--color-bg);
  z-index: 1000;
}

.loading[hidden] {
  display: none;
}

.loading__sky {
  position: relative;
  width: 220px;
  height: 220px;
  color: var(--color-mint);
}

.loading__plane {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 26px;
  height: 26px;
  animation: plane-orbit 4s linear infinite;
}

@keyframes plane-orbit {
  0%   { transform: translate(-50%, -50%) rotate(0deg)   translateY(-90px) rotate(90deg); }
  100% { transform: translate(-50%, -50%) rotate(360deg) translateY(-90px) rotate(90deg); }
}

.contrail {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  transform: rotate(calc(var(--i) * 20deg)) translateY(-90px);
}

.contrail__dot {
  display: block;
  width: 6px;
  height: 6px;
  margin: -3px 0 0 -3px;
  border-radius: 50%;
  background: currentColor;
  opacity: 0;
  animation: contrail-puff 4s linear infinite;
  animation-delay: calc(var(--i) * (4s / 18));
}

@keyframes contrail-puff {
  0%   { opacity: 0; transform: scale(0); }
  5%   { opacity: 1; transform: scale(1); }
  15%  { opacity: 1; transform: scale(1); }
  30%  { opacity: 0; transform: scale(0); }
  100% { opacity: 0; transform: scale(0); }
}

.loading__text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 500;
  color: var(--color-mint-dark);
  letter-spacing: 0.08em;
  white-space: nowrap;
  margin: 0;
}

.loading__text-dots {
  display: inline-block;
  min-width: 1.2em;
  text-align: left;
}

.btn-retry {
  margin-top: 16px;
  padding: 10px 24px;
  background: var(--color-mint);
  color: #fff;
  border: none;
  border-radius: 2px;
  font-family: inherit;
  font-size: 15px;
  cursor: pointer;
}

.btn-retry[hidden] {
  display: none;
}

/* === Offline Banner === */
.offline-banner {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 999;
  background: var(--color-error);
  color: var(--color-white);
  text-align: center;
  padding: 8px 16px;
  font-size: 0.8125rem;
  transform: translateY(-100%);
  /* 숨은 상태에서도 화면 위쪽(y < 0)에 붉은 사각형이 그대로 **칠해진다**.
     iOS Safari 는 그 영역을 상단 오버스크롤·상태바 배경으로 쓰기 때문에
     배너가 사라진 뒤에도 위쪽이 붉게 남는다 (2026-08-03 아이폰 확인).
     visibility 로 아예 안 그리게 하되, 전환이 끝난 뒤 적용해 슬라이드 아웃은 살린다. */
  visibility: hidden;
  transition: transform var(--transition), visibility 0s linear 0.3s;
}

.offline-banner.visible {
  transform: translateY(0);
  visibility: visible;
  transition: transform var(--transition), visibility 0s;
}

/* === Toast === */
.toast-container {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 998;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
  width: calc(100% - 32px);
  max-width: 400px;
}

.toast {
  background: var(--color-text);
  color: var(--color-white);
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.8125rem;
  text-align: center;
  pointer-events: auto;
  animation: toastIn 0.3s ease, toastOut 0.3s ease 2.7s forwards;
}

.toast.error {
  background: var(--color-error);
}

@keyframes toastIn {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes toastOut {
  from { opacity: 1; transform: translateY(0); }
  to   { opacity: 0; transform: translateY(-10px); }
}

/* === Screens === */
.screen {
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: column;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s ease;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}

.screen.active {
  opacity: 1;
  pointer-events: auto;
}

.screen-inner {
  padding: 0 20px 40px;
  max-width: 600px;
  margin: 0 auto;
  width: 100%;
}

/* === Upload Topbar === */
.upload-topbar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px 20px;
  max-width: 600px;
  margin: 0 auto;
  width: 100%;
  border-bottom: 1px solid var(--color-gray-line);
  margin-bottom: 24px;
}

.btn-home {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--color-gray-line);
  border-radius: 50%;
  color: var(--color-mint-dark);
  text-decoration: none;
  cursor: pointer;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
  transition: background var(--transition), border-color var(--transition);
}

.btn-home:active {
  background: var(--color-mint-pale);
  border-color: var(--color-mint);
}

.btn-home svg {
  width: 20px;
  height: 20px;
}

.upload-topbar-titles {
  flex: 1;
  min-width: 0;
  text-align: left;
}

.upload-eyebrow {
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--color-mint-dark);
  text-transform: uppercase;
  margin: 0 0 4px;
}

.upload-title {
  font-family: var(--font-sans);
  font-size: clamp(1rem, 4.5vw, 1.25rem);
  font-weight: 500;
  color: var(--color-ink);
  margin: 0;
  letter-spacing: 0.02em;
  line-height: 1.4;
}

.upload-sub {
  font-size: 0.8125rem;
  color: var(--color-text-light);
  line-height: 1.9;
  letter-spacing: 0.02em;
  text-align: center;
  margin: 8px 0 28px;
  white-space: pre-line;
}

/* === Upload Guide === */
.upload-guide {
  list-style: none;
  padding: 16px 20px;
  margin: 20px 0 28px;
  background: var(--color-mint-pale);
  border-radius: var(--radius-sm);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* display:flex 가 UA 의 [hidden]{display:none} 을 이긴다 — 업로드 중 접기가 안 먹는다. */
.upload-guide[hidden] {
  display: none;
}

.upload-guide li {
  position: relative;
  padding-left: 18px;
  font-size: 0.8125rem;
  line-height: 1.6;
  color: var(--color-text);
  letter-spacing: 0.01em;
}

.upload-guide li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-mint);
}

/* .upload-guide 내 <strong> 자동 민트색 규칙 제거 — invitation 페이지와 일관성 유지.
   필요 시 Firestore 에서 `<strong class="text-mint-dark">` 로 명시 (docs/CONTENT_GUIDE.md). */

/* ========================================================================
   Text color utilities — Firestore config 에서 HTML 태그로 사용.
   docs/CONTENT_GUIDE.md 와 동기화 유지. css/invitation.css 와 같은 집합.
   ======================================================================== */
.text-mint       { color: var(--color-mint); }
.text-mint-dark  { color: var(--color-mint-dark); }
.text-ink        { color: var(--color-ink-strong); }
.text-muted      { color: var(--color-gray-muted); }
.text-warn       { color: var(--color-warn); }

/* === Buttons === */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 36px;
  border: none;
  border-radius: 2px;
  font-family: var(--font-family);
  font-size: 0.8125rem;
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: all var(--transition);
  min-width: 200px;
  -webkit-tap-highlight-color: transparent;
}

/* .btn 의 display 가 브라우저 기본 [hidden]{display:none} 을 덮어써서 hidden 속성이 무력화된다.
   (btn-retry-failed 가 항상 보이던 원인) */
.btn[hidden] {
  display: none;
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-white);
}

.btn-primary:hover {
  background: var(--color-primary-hover);
}

.btn-primary:active {
  transform: scale(0.98);
}

.btn-secondary {
  background: transparent;
  color: var(--color-text);
  border: 1.5px solid var(--color-text);
}

.btn-secondary:hover {
  background: var(--color-text);
  color: var(--color-white);
}

.btn-secondary:active {
  transform: scale(0.98);
}

.btn-text {
  background: none;
  border: none;
  color: var(--color-text-light);
  font-family: var(--font-family);
  font-size: 0.8125rem;
  cursor: pointer;
  padding: 4px 8px;
}

.btn:disabled {
  opacity: 0.5;
  pointer-events: none;
}

/* === Upload Screen === */
.uploader-name-wrap {
  margin-bottom: 20px;
}

.input-name {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius);
  font-family: var(--font-family);
  font-size: 0.875rem;
  color: var(--color-text);
  background: var(--color-white);
  outline: none;
  transition: border-color var(--transition);
}

.input-name:focus {
  border-color: var(--color-primary);
}

.input-name::placeholder {
  color: var(--color-text-light);
}

/* === Drop Zone === */
.drop-zone {
  border: 1.5px dashed var(--color-border);
  border-radius: var(--radius-sm);
  padding: 48px 20px;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition);
  -webkit-tap-highlight-color: transparent;
}

.drop-zone:hover,
.drop-zone.dragover {
  border-color: var(--color-primary);
  background: rgba(129, 199, 192, 0.05);
}

.drop-zone.disabled,
.drop-zone[aria-disabled="true"] {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

.drop-zone.disabled:hover,
.drop-zone[aria-disabled="true"]:hover {
  border-color: var(--color-border);
  background: transparent;
}

.drop-icon {
  width: 48px;
  height: 48px;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.drop-text {
  font-size: 0.9375rem;
  color: var(--color-text);
  margin-bottom: 4px;
}

.drop-subtext {
  font-size: 0.75rem;
  color: var(--color-text-light);
}

/* === Picker Hint (선택 창 지연 안내 시트) ===
   청첩장 게스트 패스의 .pass-sheet 와 같은 visibility 지연 패턴 — display 로 여닫으면
   transition 이 안 걸린다. 닫힐 때만 0.34s 뒤에 visibility 를 끈다. */
.picker-hint {
  position: fixed;
  inset: 0;
  z-index: 900;
  visibility: hidden;
  transition: visibility 0s linear 0.34s;
}

.picker-hint.open {
  visibility: visible;
  transition: visibility 0s;
}

.picker-hint__scrim {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.35);
  opacity: 0;
  transition: opacity 0.34s ease;
}

.picker-hint.open .picker-hint__scrim {
  opacity: 1;
}

.picker-hint__panel {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 28px 22px calc(28px + env(safe-area-inset-bottom));
  background: var(--color-white);
  border-radius: 18px 18px 0 0;
  text-align: center;
  transform: translateY(101%);
  transition: transform 0.34s cubic-bezier(0.2, 0.9, 0.25, 1);
}

.picker-hint.open .picker-hint__panel {
  transform: none;
}

.picker-hint__text {
  margin-bottom: 24px;
  font-size: 0.875rem;
  line-height: 1.8;
  color: var(--color-text);
}

.picker-hint__panel .btn {
  width: 100%;
}

/* === File Preview === */
.file-preview-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.file-count {
  font-size: 0.8125rem;
  color: var(--color-text-light);
}

.file-preview-actions {
  display: flex;
  gap: 8px;
}

.preview-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-bottom: 20px;
}

.preview-item {
  position: relative;
  aspect-ratio: 1;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--color-accent);
}

.preview-item img,
.preview-item video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.preview-item .video-badge {
  position: absolute;
  bottom: 4px;
  left: 4px;
  background: rgba(0, 0, 0, 0.6);
  color: white;
  font-size: 0.625rem;
  padding: 2px 6px;
  border-radius: 4px;
}

.preview-remove {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 24px;
  height: 24px;
  background: rgba(0, 0, 0, 0.5);
  color: white;
  border: none;
  border-radius: 50%;
  font-size: 14px;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-upload-start {
  width: 100%;
  /* 50장을 고르면 그리드가 2,000px 이 넘어 버튼이 한참 아래로 밀려난다.
     누르러 내려가는 동안 안 보이던 썸네일까지 전부 생성돼 지연 생성이 무의미해진다.
     .screen 이 스크롤 컨테이너(position:fixed + overflow-y:auto)라 sticky 가 그 안에서 동작한다. */
  position: sticky;
  bottom: 16px;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

.video-placeholder {
  width: 100%;
  height: 100%;
  background: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
}

/* === Upload Progress === */
.upload-progress {
  padding-top: 20px;
}

.progress-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.progress-text {
  font-size: 0.875rem;
  color: var(--color-text);
}

.progress-count {
  font-size: 0.8125rem;
  color: var(--color-text-light);
}

.progress-bar-wrap {
  width: 100%;
  height: 6px;
  background: var(--color-accent);
  border-radius: 3px;
  overflow: hidden;
  margin-bottom: 16px;
}

.progress-bar {
  height: 100%;
  background: var(--color-primary);
  border-radius: 3px;
  width: 0%;
  transition: width 0.3s ease;
}

.progress-files {
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-height: 200px;
  overflow-y: auto;
}

.progress-file-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.75rem;
  color: var(--color-text-light);
}

.progress-file-item .file-status {
  flex-shrink: 0;
  width: 16px;
  text-align: center;
}

.progress-file-item .file-name {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.progress-file-item .file-percent {
  flex-shrink: 0;
  /* 자릿수가 바뀔 때 파일명이 흔들리지 않게 폭을 고정한다. */
  width: 34px;
  text-align: right;
  font-variant-numeric: tabular-nums;
  color: var(--color-text-light);
}

.progress-eta {
  margin-top: 8px;
  font-size: 0.75rem;
  color: var(--color-text-light);
  text-align: right;
  min-height: 1em;
}

.progress-note {
  margin-top: 16px;
  padding: 10px 14px;
  background: var(--color-mint-pale);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  line-height: 1.6;
  color: var(--color-text-light);
  text-align: center;
}

.progress-file-item.done {
  color: var(--color-success);
}

.progress-file-item.error {
  color: var(--color-error);
}

.spinner-tiny {
  display: inline-block;
  width: 12px;
  height: 12px;
  border: 1.5px solid var(--color-accent);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.icon-check, .icon-x {
  width: 14px;
  height: 14px;
  vertical-align: middle;
}

.icon-check { color: var(--color-success); }
.icon-x { color: var(--color-error); }

/* === Upload Complete === */
.upload-complete {
  text-align: center;
  padding-top: 60px;
}

.complete-animation {
  margin-bottom: 24px;
}

.checkmark {
  width: 72px;
  height: 72px;
}

.checkmark-circle {
  stroke-dasharray: 166;
  stroke-dashoffset: 166;
  stroke-width: 2;
  stroke-miterlimit: 10;
  stroke: var(--color-success);
  animation: stroke 0.6s cubic-bezier(0.65, 0, 0.45, 1) forwards;
}

.checkmark-check {
  stroke-dasharray: 48;
  stroke-dashoffset: 48;
  stroke-width: 3;
  stroke-linecap: round;
  stroke: var(--color-success);
  animation: stroke 0.3s cubic-bezier(0.65, 0, 0.45, 1) 0.4s forwards;
}

@keyframes stroke {
  100% { stroke-dashoffset: 0; }
}

.complete-title {
  font-size: 1.375rem;
  color: var(--color-text);
  margin-bottom: 8px;
}

.complete-message {
  font-size: 0.875rem;
  color: var(--color-text-light);
  margin-bottom: 32px;
}

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

/* === Skeleton === */
.skeleton {
  background: linear-gradient(90deg, var(--color-accent) 25%, #e8f7f5 50%, var(--color-accent) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
}

@keyframes shimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* === Responsive === */
@media (min-width: 768px) {
  .preview-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* === Reduced Motion === */
@media (prefers-reduced-motion: reduce) {
  .loading__plane,
  .contrail__dot { animation: none; }

  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}