:root {
  --bg: #edf3ff;
  --bg-soft: #f7faff;
  --panel: #ffffff;
  --panel-soft: #f4f8ff;
  --text: #1a2b4a;
  --text-muted: #5f6f8d;
  --border: #d6e3f7;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --accent-soft: #dbeafe;
  --danger: #e11d48;
  --danger-hover: #be123c;
  --danger-soft: #ffe4eb;
  --shadow: 0 16px 38px rgba(37, 99, 235, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  font-family: Sarabun, "Noto Sans Thai", Prompt, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 10% 15%, #dbeafe 0%, transparent 35%),
    radial-gradient(circle at 90% 10%, #e0f2fe 0%, transparent 30%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-soft) 100%);
}

.container {
  max-width: 1040px;
  margin: 24px auto;
  padding: 22px 20px 34px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 20px;
  box-shadow: var(--shadow);
}

h1 {
  margin: 0 0 8px;
  color: #163b8d;
  letter-spacing: 0.2px;
}

h2 {
  color: #27457f;
}

#msg,
#admin-msg {
  margin: 0 0 12px;
  color: var(--text-muted);
}

.admin-note {
  margin-top: 0;
  margin-bottom: 14px;
  color: var(--text-muted);
  font-size: 14px;
}

.usage-summary {
  margin: 6px 0 14px;
  display: grid;
  grid-template-columns: minmax(220px, 360px);
  gap: 10px;
}

.usage-item {
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: linear-gradient(180deg, #f8fbff 0%, #eef5ff 100%);
}

.usage-label {
  color: #48639a;
  font-size: 13px;
  font-weight: 700;
}

.usage-value {
  margin-top: 4px;
  color: #173a81;
  font-size: 28px;
  font-weight: 800;
  line-height: 1.1;
}

.usage-unit {
  margin-top: 2px;
  color: #5e78ab;
  font-size: 12px;
}

.media-preview,
video,
#gifImage {
  width: min(100%, 360px);
  margin: 12px auto 20px;
  display: block;
  border-radius: 16px;
  background: #dbe6fb;
  border: 1px solid var(--border);
  aspect-ratio: 1080 / 1527;
  object-fit: cover;
}

.btn-download {
  display: inline-block;
  margin: 10px 6px 14px;
  padding: 10px 16px;
  border-radius: 999px;
  border: 1px solid transparent;
  text-decoration: none;
  font-weight: 700;
  text-align: center;
  transition: transform 0.14s ease, box-shadow 0.2s ease, background-color 0.2s ease;
  cursor: pointer;
}

.btn-download:hover:not([disabled]) {
  transform: translateY(-1px);
}

.btn-download[disabled] {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-video-like {
  display: table;
  margin: 12px auto 18px;
}

.btn-image {
  background: var(--accent-soft);
  color: #12336f;
  border-color: #b8d0fb;
  padding: 8px 14px;
  font-size: 14px;
  min-width: auto;
}

.btn-ghost {
  background: #ffffff;
  color: var(--accent);
  border-color: #b6cef8;
  padding: 10px 18px;
  font-size: 16px;
  min-width: 160px;
}

.btn-danger {
  background: var(--danger-soft);
  color: #8f1239;
  border-color: #f7b0c4;
  padding: 10px 18px;
  font-size: 16px;
  min-width: 160px;
}

.btn-danger:hover:not([disabled]) {
  background: #ffd5e0;
  border-color: #f38aa7;
}

.admin-toolbar {
  margin-bottom: 16px;
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}

.admin-filter {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: #f4f8ff;
}

.admin-filter label {
  color: #35548f;
  font-size: 13px;
  font-weight: 700;
}

#dateFilterInput {
  border: 1px solid #c9d9f7;
  border-radius: 8px;
  padding: 6px 8px;
  background: #ffffff;
  color: #22437d;
  font-size: 13px;
}

#dateFilterInput:focus {
  outline: none;
  border-color: #8ab4ff;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.16);
}

.admin-filter-clear {
  min-width: 0;
  margin: 0;
  padding: 7px 12px;
  font-size: 13px;
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  background: var(--panel-soft);
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
}

.admin-th {
  text-align: left;
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
  color: #2f4b84;
  font-weight: 700;
  background: #f1f6ff;
}

.admin-th-check {
  width: 46px;
  text-align: center;
}

.admin-cell {
  padding: 8px 10px;
  border-bottom: 1px solid #dfe9f8;
  color: #263f72;
}

.admin-row-checkbox {
  width: 16px;
  height: 16px;
  accent-color: var(--accent);
  cursor: pointer;
}

.admin-sort-btn {
  border: none;
  background: transparent;
  color: #2f4b84;
  font-size: 14px;
  font-weight: 700;
  padding: 0;
  cursor: pointer;
  text-align: left;
}

.admin-sort-btn:hover {
  color: var(--accent-hover);
}

.download-tip {
  margin: 12px 0 16px;
  padding: 14px;
  background: #f2f8ff;
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 14px;
  line-height: 1.5;
}

.image-strip {
  margin-top: 10px;
  display: flex;
  flex-direction: row;
  gap: 12px;
  overflow-x: auto;
  padding-bottom: 8px;
  justify-content: center;
}

.image-card {
  flex: 0 0 auto;
  width: min(360px, 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-inline: auto;
}

.image-card img {
  width: 100%;
  max-width: 100%;
  border-radius: 14px;
  background: #dbe6fb;
  border: 1px solid var(--border);
  aspect-ratio: 1080 / 1527;
  object-fit: cover;
}

#gifImage {
  display: none;
}

.admin-modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
}

.admin-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(79, 108, 164, 0.28);
  backdrop-filter: blur(2px);
}

.admin-modal-card {
  position: relative;
  margin: 10vh auto 0;
  width: min(520px, calc(100% - 24px));
  padding: 20px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: #ffffff;
  box-shadow: 0 22px 44px rgba(47, 75, 132, 0.18);
}

.admin-modal-card h2 {
  margin: 0 0 8px;
  font-size: 22px;
  color: #1f3f7e;
}

.admin-modal-session {
  margin: 0 0 14px;
  color: #415a8c;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  word-break: break-all;
}

.admin-modal-label {
  display: block;
  margin: 0 0 8px;
  color: #2d467a;
}

#deletePasswordInput {
  width: 100%;
  box-sizing: border-box;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid #c8d8f4;
  background: #f7faff;
  color: #1b2d52;
  outline: none;
}

#deletePasswordInput:focus {
  border-color: #8ab4ff;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.18);
}

.admin-modal-error {
  min-height: 20px;
  margin: 8px 0 0;
  color: #be123c;
  font-size: 14px;
}

.admin-modal-actions {
  margin-top: 14px;
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  flex-wrap: wrap;
}

@media (max-width: 760px) {
  .container {
    margin: 10px;
    padding: 16px 14px 24px;
    border-radius: 14px;
  }

  video,
  #gifImage,
  .image-card,
  .image-card img {
    width: min(100%, 360px);
    max-width: min(100%, 360px);
    margin-inline: auto;
  }

  .btn-ghost,
  .btn-danger {
    min-width: 0;
  }

  .usage-summary {
    grid-template-columns: 1fr;
  }
}