:root {
  --navy-1: #0d2945;
  --navy-2: #143557;
  --ink: #0f1b2e;
  --paper: #f4f6f9;
  --card: #ffffff;
  --line: #dde3ec;
  --muted: #6c7787;
  --brand: #bf5a2a;
  --brand-hover: #a94b1f;
  --ok: #1a7a4c;
  --danger: #b53535;
  --focus: #4a90e2;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(15,27,46,0.06), 0 4px 12px rgba(15,27,46,0.05);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.topbar {
  background: var(--navy-1);
  color: #fff;
  padding: 14px 24px;
  padding-top: calc(14px + env(safe-area-inset-top, 0px));
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 12px;
}
.brand { display: flex; align-items: baseline; gap: 8px; }
.brand-mark { color: var(--brand); font-size: 18px; }
.brand-text { font-weight: 600; letter-spacing: 0.02em; }
.brand-sub { font-size: 12px; color: rgba(255,255,255,0.65); text-transform: uppercase; letter-spacing: 0.08em; margin-left: 4px; }
.header-account { display: flex; align-items: center; gap: 12px; font-size: 13px; }
.header-account .muted { color: rgba(255,255,255,0.7); }
.link-btn {
  background: none; border: 0; color: rgba(255,255,255,0.85);
  cursor: pointer; font: inherit; padding: 4px 10px; border-radius: 6px;
  text-decoration: underline; text-underline-offset: 3px;
}
.link-btn:hover { color: #fff; background: rgba(255,255,255,0.08); }

.view { flex: 1; padding: 32px 20px; }
.wrap { max-width: 1120px; margin: 0 auto; }
.wrap-narrow { max-width: 460px; margin: 40px auto 0; }
.hide { display: none !important; }

.card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow);
}
.card h1 { margin: 0 0 8px; font-size: 22px; letter-spacing: -0.01em; }
.card p { margin: 0 0 16px; }
.muted { color: var(--muted); font-size: 14px; }

form { display: flex; flex-direction: column; gap: 6px; }
label { font-size: 13px; font-weight: 500; color: var(--ink); }
input[type="email"], input[type="text"], input[type="search"], select {
  padding: 10px 12px; border: 1px solid var(--line); border-radius: 8px;
  font: inherit; background: #fff; color: var(--ink); width: 100%;
}
input:focus, select:focus {
  outline: 2px solid var(--focus); outline-offset: 1px; border-color: var(--focus);
}
button {
  font: inherit; cursor: pointer; padding: 10px 18px; border-radius: 8px;
  border: 1px solid transparent; font-weight: 500;
}
button.primary {
  background: var(--brand); color: #fff; border-color: var(--brand); margin-top: 12px;
}
button.primary:hover { background: var(--brand-hover); border-color: var(--brand-hover); }
button.primary:disabled { background: var(--muted); border-color: var(--muted); cursor: not-allowed; }
button.ghost { background: transparent; color: var(--ink); border: 1px solid var(--line); }
button.ghost:hover { border-color: var(--muted); }
button.danger { background: transparent; color: var(--danger); border: 1px solid var(--line); }
button.danger:hover { background: var(--danger); color: #fff; border-color: var(--danger); }

.signin-msg { margin-top: 16px; padding: 12px 14px; border-radius: 8px; font-size: 14px; }
.signin-msg.ok { background: #e6f3ec; color: var(--ok); border: 1px solid #b7dfc5; }
.signin-msg.err { background: #fdeaea; color: var(--danger); border: 1px solid #f2c0c0; }
.signin-help { margin-top: 20px; font-size: 13px; }
.signin-help a { color: var(--brand); }

.browse-head {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; margin-bottom: 24px; flex-wrap: wrap;
}
.browse-head h1 { margin: 0; font-size: 24px; letter-spacing: -0.01em; }
.browse-controls { display: flex; gap: 10px; flex: 1; max-width: 560px; }
.browse-controls input { flex: 2; }
.browse-controls select { flex: 1; max-width: 200px; }

.asset-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 20px; }
.asset-card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); overflow: hidden; display: flex;
  flex-direction: column; transition: box-shadow 0.15s, transform 0.15s;
}
.asset-card:hover { box-shadow: var(--shadow); transform: translateY(-1px); }
.asset-thumb {
  aspect-ratio: 4/3; background: var(--paper); display: flex;
  align-items: center; justify-content: center; overflow: hidden; position: relative;
}
.asset-thumb img, .asset-thumb video {
  width: 100%; height: 100%; object-fit: cover; display: block;
}
.asset-thumb .placeholder { font-size: 42px; color: var(--muted); opacity: 0.5; }
.asset-play {
  position: absolute; inset: 0; display: flex; align-items: center;
  justify-content: center; color: rgba(255,255,255,0.95); font-size: 42px;
  text-shadow: 0 2px 8px rgba(0,0,0,0.35); pointer-events: none;
}
.asset-meta { padding: 12px 14px; border-top: 1px solid var(--line); display: flex; flex-direction: column; gap: 4px; }
.asset-name { font-size: 14px; font-weight: 500; color: var(--ink); word-break: break-word; }
.asset-sub { font-size: 12px; color: var(--muted); display: flex; gap: 8px; }
.asset-actions { display: flex; gap: 6px; padding: 0 14px 14px; }
.asset-actions button { flex: 1; padding: 8px 12px; font-size: 13px; margin-top: 0; }
.asset-actions button.danger { flex: 0 0 auto; min-width: 40px; max-width: 44px; padding: 8px 10px; }

.category-h {
  grid-column: 1 / -1; margin: 8px 0 0; font-size: 13px; font-weight: 600;
  color: var(--muted); text-transform: uppercase; letter-spacing: 0.08em;
}

.modal {
  position: fixed; inset: 0; background: rgba(15, 27, 46, 0.75);
  display: flex; align-items: center; justify-content: center; padding: 20px;
  padding-top: calc(20px + env(safe-area-inset-top, 0px));
  padding-bottom: calc(20px + env(safe-area-inset-bottom, 0px));
  z-index: 100; overflow-y: auto;
}
.modal-body {
  background: var(--card); border-radius: var(--radius); max-width: 900px;
  width: 100%; max-height: 100%; display: flex; flex-direction: column;
  overflow: hidden; position: relative; box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
}
.modal-close {
  position: absolute; top: 8px; right: 12px; background: transparent;
  border: 0; color: var(--muted); font-size: 30px; line-height: 1;
  padding: 4px 10px; cursor: pointer; z-index: 2;
}
.modal-close:hover { color: var(--ink); }
#preview-content {
  flex: 1; padding: 44px 20px 12px; display: flex; align-items: center;
  justify-content: center; overflow: auto; min-height: 200px;
}
#preview-content img, #preview-content video {
  max-width: 100%; max-height: 70vh; object-fit: contain; border-radius: 6px; background: #000;
}
#preview-content .preview-meta { text-align: center; color: var(--muted); font-size: 13px; margin-top: 12px; }
#preview-content .preview-name { font-size: 15px; color: var(--ink); font-weight: 500; margin-bottom: 6px; word-break: break-word; }
#preview-content .preview-fallback { text-align: center; padding: 40px 20px; }
#preview-content .preview-fallback .placeholder { font-size: 64px; color: var(--muted); opacity: 0.5; margin-bottom: 12px; }
.modal-actions {
  padding: 16px 20px; border-top: 1px solid var(--line);
  display: flex; gap: 10px; justify-content: flex-end;
}
.modal-actions button { min-width: 110px; margin-top: 0; }

.footer {
  padding: 20px;
  padding-bottom: calc(20px + env(safe-area-inset-bottom, 0px));
  text-align: center; border-top: 1px solid var(--line); background: var(--card);
}
.footer a { color: var(--brand); text-decoration: none; }
.footer a:hover { text-decoration: underline; }

@media (max-width: 640px) {
  .view { padding: 20px 16px; }
  .wrap-narrow { margin-top: 20px; }
  .card { padding: 20px; }
  .browse-controls { flex-direction: column; max-width: none; }
  .browse-controls select { max-width: none; }
  .asset-grid { grid-template-columns: 1fr; gap: 14px; }
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #eef1f6;
    --paper: #0b1220;
    --card: #131c2e;
    --line: #26304a;
    --muted: #96a0b3;
  }
  .footer { background: var(--card); }
}