@import url("https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=DM+Serif+Display&display=swap");

* { box-sizing: border-box; }

:root {
  --bg-1: #ffe9e1;
  --bg-2: #ffd6e0;
  --bg-3: #fef3ec;
  --surface: rgba(255, 252, 248, 0.85);
  --surface-solid: #fffcf8;
  --text: #3d2832;
  --text-soft: #8d6a78;
  --muted: #c9a8b5;
  --primary: #ff6b9d;
  --primary-soft: #ffb6cc;
  --peach: #ffb088;
  --lavender: #c8b4e8;
  --border: rgba(255, 138, 165, 0.18);
  --radius-sm: 12px;
  --radius: 18px;
  --radius-lg: 28px;
  --shadow-sm: 0 2px 12px rgba(255, 107, 157, 0.08);
  --shadow: 0 8px 32px rgba(255, 107, 157, 0.12);
  --shadow-lg: 0 20px 60px rgba(255, 107, 157, 0.18);
}

body {
  margin: 0;
  font-family: "Plus Jakarta Sans", -apple-system, BlinkMacSystemFont, "PingFang TC", sans-serif;
  color: var(--text);
  min-height: 100vh;
  background:
    radial-gradient(at 0% 0%, var(--bg-2) 0%, transparent 50%),
    radial-gradient(at 100% 0%, var(--bg-3) 0%, transparent 50%),
    radial-gradient(at 50% 100%, #ffe1d4 0%, transparent 60%),
    var(--bg-1);
  background-attachment: fixed;
  overflow-x: hidden;
}

body::before,
body::after {
  content: "";
  position: fixed;
  border-radius: 50%;
  filter: blur(60px);
  z-index: -1;
  pointer-events: none;
  opacity: 0.5;
}
body::before {
  width: 340px;
  height: 340px;
  background: radial-gradient(circle, var(--primary) 0%, transparent 70%);
  top: -100px;
  right: -80px;
  animation: float 12s ease-in-out infinite;
}
body::after {
  width: 280px;
  height: 280px;
  background: radial-gradient(circle, var(--lavender) 0%, transparent 70%);
  bottom: -60px;
  left: -60px;
  animation: float 14s ease-in-out infinite reverse;
}
@keyframes float {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(30px, -30px); }
}

/* ── Header ────────────────────────────────────────────────── */
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 32px;
  max-width: 1400px;
  margin: 0 auto;
}
header h1 {
  margin: 0;
  font-family: "DM Serif Display", serif;
  font-size: 32px;
  font-weight: 400;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, var(--primary), var(--peach));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
#nav { display: flex; align-items: center; gap: 14px; }
#userInfo {
  color: var(--text-soft);
  font-size: 14px;
  font-weight: 500;
}
#loginToggleBtn,
#logoutBtn {
  padding: 9px 20px;
  background: linear-gradient(135deg, var(--primary) 0%, #ff8aa8 100%);
  color: white;
  border: none;
  border-radius: 999px;
  cursor: pointer;
  font-family: inherit;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.3px;
  box-shadow: 0 4px 14px rgba(255, 107, 157, 0.3);
  transition: all 0.2s ease;
}
#loginToggleBtn:hover,
#logoutBtn:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 22px rgba(255, 107, 157, 0.42);
}

main {
  max-width: 1400px;
  margin: 0 auto;
  padding: 8px 32px 64px;
}

/* ── Auth panel (inline expandable) ────────────────────────── */
#authView {
  position: relative;
  max-width: 440px;
  margin: 16px auto 32px;
  padding: 36px 32px 28px;
  background: var(--surface);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(255, 255, 255, 0.6);
  animation: panelIn 0.3s ease;
}
@keyframes panelIn {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

.close-btn {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 32px;
  height: 32px;
  border: none;
  background: rgba(255, 214, 224, 0.5);
  color: var(--text-soft);
  border-radius: 50%;
  cursor: pointer;
  font-size: 18px;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}
.close-btn:hover { background: var(--primary); color: white; }

.tabs {
  display: flex;
  gap: 6px;
  margin-bottom: 24px;
  padding: 4px;
  background: rgba(255, 214, 224, 0.4);
  border-radius: var(--radius);
}
.tabs button {
  flex: 1;
  background: transparent;
  color: var(--text-soft);
  border: none;
  padding: 10px 16px;
  border-radius: 14px;
  cursor: pointer;
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  transition: all 0.25s ease;
}
.tabs button:hover { color: var(--text); }
.tabs button.active {
  color: var(--primary);
  background: white;
  box-shadow: var(--shadow-sm);
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.auth-form[hidden] { display: none; }

.auth-form input {
  padding: 14px 18px;
  background: white;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-family: inherit;
  font-size: 15px;
  font-weight: 500;
  transition: all 0.2s ease;
}
.auth-form input::placeholder { color: var(--muted); }
.auth-form input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(255, 107, 157, 0.12);
}

.auth-form button {
  padding: 14px 24px;
  background: linear-gradient(135deg, var(--primary) 0%, #ff8aa8 100%);
  color: white;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  font-family: inherit;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.2px;
  box-shadow: 0 6px 20px rgba(255, 107, 157, 0.35);
  transition: all 0.2s ease;
}
.auth-form button:hover { transform: translateY(-1px); box-shadow: 0 10px 28px rgba(255, 107, 157, 0.45); }
.auth-form button:active { transform: translateY(0); }

.msg {
  margin: 14px 0 0;
  min-height: 1.4em;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-soft);
}
.msg.error { color: #d63862; }
.msg.ok { color: #2da580; }

/* ── Guest notice ──────────────────────────────────────────── */
.guest-notice {
  text-align: center;
  padding: 14px 20px;
  margin: 0 auto 28px;
  max-width: 600px;
  background: rgba(255, 252, 248, 0.7);
  backdrop-filter: blur(10px);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-soft);
  border: 1px solid var(--border);
}
.link-btn {
  background: none;
  border: none;
  color: var(--primary);
  font-weight: 700;
  cursor: pointer;
  font-family: inherit;
  font-size: inherit;
  text-decoration: underline;
  text-underline-offset: 3px;
  padding: 0 2px;
}
.link-btn:hover { color: var(--primary-hover, #f04f88); }

/* ── Upload zone ───────────────────────────────────────────── */
.upload-zone {
  background: var(--surface);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 2px dashed rgba(255, 107, 157, 0.25);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  text-align: center;
  margin-bottom: 32px;
  transition: all 0.25s ease;
}
.upload-zone:hover,
.upload-zone.drag-over {
  border-color: var(--primary);
  background: rgba(255, 214, 224, 0.3);
  transform: scale(1.005);
}
.upload-zone.drag-over { box-shadow: 0 0 0 6px rgba(255, 107, 157, 0.1); }

.upload-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 16px 32px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--peach) 100%);
  color: white;
  border-radius: 999px;
  cursor: pointer;
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.3px;
  box-shadow: 0 8px 24px rgba(255, 107, 157, 0.35);
  transition: all 0.2s ease;
}
.upload-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(255, 107, 157, 0.45);
}
.upload-hint {
  margin: 12px 0 0;
  font-size: 12px;
  color: var(--text-soft);
}

#uploadProgress {
  margin-top: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
}
.progress-row {
  background: white;
  padding: 10px 16px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: opacity 0.4s ease;
}
.progress-row.done { opacity: 0.5; }
.progress-row.error { background: #fff0f3; }
.progress-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 6px;
}
.progress-info .filename {
  color: var(--text);
  max-width: 70%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.progress-info .status { color: var(--text-soft); }
.progress-bar {
  height: 4px;
  background: rgba(255, 182, 204, 0.3);
  border-radius: 2px;
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--primary), var(--peach));
  transition: width 0.2s ease;
}

/* ── Masonry gallery ───────────────────────────────────────── */
.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  grid-auto-rows: 10px;
  gap: 14px;
}
@media (min-width: 900px) {
  .gallery {
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 16px;
  }
}

.tile {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--surface-solid);
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  transform: translateY(8px);
  opacity: 0;
  animation: tileIn 0.5s ease forwards;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
@keyframes tileIn {
  to { transform: translateY(0); opacity: 1; }
}
.tile:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.tile img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.6s ease;
}
.tile:hover img { transform: scale(1.05); }

.tile-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(45, 27, 30, 0.78) 100%);
  opacity: 0;
  transition: opacity 0.25s ease;
  padding: 16px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  pointer-events: none;
}
.tile:hover .tile-overlay { opacity: 1; }
.tile-date {
  color: white;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.3px;
}
.tile-play {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 56px;
  height: 56px;
  background: rgba(255, 255, 255, 0.95);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  box-shadow: var(--shadow);
  opacity: 0;
  transition: opacity 0.25s ease, transform 0.3s ease;
}
.tile:hover .tile-play {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1.08);
}
.tile-lock {
  position: absolute;
  top: 12px;
  left: 12px;
  background: rgba(255, 255, 255, 0.92);
  color: var(--text);
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(4px);
}

.tile-delete {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 30px;
  height: 30px;
  border: none;
  background: rgba(45, 27, 30, 0.7);
  color: white;
  border-radius: 50%;
  cursor: pointer;
  font-size: 22px;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: scale(0.9);
  transition: all 0.2s ease;
  z-index: 2;
  backdrop-filter: blur(6px);
  box-shadow: var(--shadow-sm);
  padding: 0;
}
.tile:hover .tile-delete {
  opacity: 1;
  transform: scale(1);
}
.tile-delete:hover {
  background: #d63862;
  transform: scale(1.08);
}

.gallery:empty::after {
  content: "還沒有照片，登入後上傳第一張吧 ✨";
  grid-column: 1 / -1;
  grid-row: span 20;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 60px 20px;
  color: var(--text-soft);
  font-size: 15px;
  font-weight: 500;
}

/* ── Lightbox modal ────────────────────────────────────────── */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(45, 27, 30, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 32px;
}
.modal.open { display: flex; animation: fadeIn 0.2s ease; }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

.modal-inner {
  max-width: 90vw;
  max-height: 90vh;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  position: relative;
  display: flex;
  flex-direction: column;
}
.modal img,
.modal video {
  max-width: 90vw;
  max-height: 85vh;
  display: block;
}
.modal-close {
  position: absolute;
  top: 20px;
  right: 24px;
  width: 44px;
  height: 44px;
  background: rgba(255, 255, 255, 0.95);
  border: none;
  color: var(--text);
  font-size: 22px;
  cursor: pointer;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow);
  transition: transform 0.15s ease;
  z-index: 1;
}
.modal-close:hover { transform: scale(1.08); }
.lightbox-note {
  background: white;
  padding: 16px 20px;
  text-align: center;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.lightbox-actions {
  background: white;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.lightbox-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--peach) 100%);
  color: white;
  text-decoration: none;
  border-radius: 999px;
  font-weight: 700;
  font-size: 14px;
  box-shadow: 0 4px 14px rgba(255, 107, 157, 0.3);
  transition: all 0.2s ease;
}
.lightbox-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 22px rgba(255, 107, 157, 0.42);
}
.lightbox-spec {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-soft);
  letter-spacing: 0.5px;
}

/* ── Toast ─────────────────────────────────────────────────── */
.toast-host {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
  max-width: 92vw;
}
.toast {
  padding: 12px 20px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  background: white;
  color: var(--text);
  box-shadow: var(--shadow);
  pointer-events: auto;
  animation: toastIn 0.3s ease;
  max-width: 100%;
  overflow-wrap: break-word;
  text-align: center;
}
.toast.error { background: linear-gradient(135deg, #ff5b85, #ff8aa8); color: white; }
.toast.ok { background: linear-gradient(135deg, #5dd6a8, #92e3c0); color: white; }
@keyframes toastIn {
  from { transform: translateY(-12px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

@media (max-width: 640px) {
  header { padding: 20px; }
  header h1 { font-size: 24px; }
  main { padding: 8px 16px 48px; }
  #authView { margin: 12px 0 24px; padding: 28px 22px; }
  .upload-zone { padding: 26px 18px; }
  .gallery { gap: 10px; }
}