:root {
  --blue: #4285f4;
  --red: #ea4335;
  --yellow: #fbbc05;
  --green: #34a853;
  --text: #202124;
  --muted: #70757a;
  --border: #dfe1e5;
  --btn-bg: #f8f9fa;
  --footer-bg: #f2f2f2;
}
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 14px;
  color: var(--text);
  background: #fff;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}
a { color: inherit; text-decoration: none; }
a:hover { text-decoration: underline; }

/* Header */
.top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 6px 12px 0 12px;
  height: 60px;
  font-size: 13px;
}
.top nav a { padding: 8px; margin: 0 4px; line-height: 24px; }
.top-left, .top-right { display: flex; align-items: center; }

/* Center */
.center {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  padding: 0 20px;
  margin-top: max(8vh, 40px);
}
.logo {
  margin: 0 0 24px;
  font-family: "Product Sans", "Google Sans", Arial, Helvetica, sans-serif;
  font-size: 92px;
  font-weight: 500;
  line-height: 1;
  letter-spacing: -6px;
  display: flex;
  align-items: baseline;
  user-select: none;
}
.logo .c-blue { color: var(--blue); }
.logo .c-red { color: var(--red); }
.logo .c-yellow { color: var(--yellow); }
.logo .c-green { color: var(--green); }
.logo .bc {
  font-family: Arial, Helvetica, sans-serif;
  font-size: 22px;
  font-weight: 400;
  letter-spacing: 0;
  color: var(--muted);
  margin-left: 16px;
  position: relative;
  top: -4px;
}

.mode-label {
  margin: -16px 0 24px;
  color: var(--muted);
  font-size: 16px;
  letter-spacing: 1px;
  text-transform: uppercase;
}
.mode-label[hidden] { display: none; }

/* Search box */
.search { width: 100%; max-width: 584px; }
.box {
  display: flex;
  align-items: center;
  height: 46px;
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 0 14px;
  background: #fff;
}
.box:hover, .box:focus-within {
  box-shadow: 0 1px 6px rgba(32, 33, 36, .28);
  border-color: rgba(223, 225, 229, 0);
}
.magnifier { width: 20px; height: 20px; fill: #9aa0a6; margin-right: 13px; flex: none; }
.box input {
  flex: 1;
  border: 0;
  outline: 0;
  font: 16px Arial, Helvetica, sans-serif;
  color: var(--text);
  background: transparent;
  min-width: 0;
}
.lens-btn {
  border: 0;
  background: none;
  padding: 0;
  margin-left: 8px;
  width: 24px;
  height: 24px;
  cursor: pointer;
  flex: none;
}
.lens-btn svg { width: 24px; height: 24px; }
.buttons { display: flex; justify-content: center; gap: 12px; padding-top: 18px; flex-wrap: wrap; }
.buttons button {
  background: var(--btn-bg);
  border: 1px solid var(--btn-bg);
  border-radius: 4px;
  color: #3c4043;
  font: 14px Arial, Helvetica, sans-serif;
  height: 36px;
  padding: 0 16px;
  cursor: pointer;
}
.buttons button:hover {
  border-color: #dadce0;
  box-shadow: 0 1px 1px rgba(0, 0, 0, .1);
  color: var(--text);
}
.notice {
  text-align: center;
  color: var(--muted);
  font-size: 13px;
  margin: 26px 0 0;
}
.notice code {
  font-family: Menlo, Consolas, monospace;
  font-size: 12px;
  background: var(--btn-bg);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 1px 4px;
}

/* Footer */
.bottom { background: var(--footer-bg); color: var(--muted); font-size: 14px; }
.links {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 0 20px;
  min-height: 48px;
}
.bottom-left { justify-self: start; }
.tagline { justify-self: center; text-align: center; padding: 15px 8px; }
.bottom-right { justify-self: end; }
.links a { display: inline-block; padding: 15px; white-space: nowrap; }
@media (max-width: 600px) {
  .links { grid-template-columns: 1fr; }
  .bottom-left, .bottom-right, .tagline { justify-self: center; padding-top: 4px; padding-bottom: 4px; }
  .links { padding-top: 8px; padding-bottom: 8px; }
}

/* Search-by-image dialog */
.overlay[hidden] { display: none; }
.overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, .35);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 120px 16px 16px;
  z-index: 10;
}
.dialog {
  background: #fff;
  border-radius: 24px;
  width: 100%;
  min-width: 0;
  max-width: 584px;
  padding: 20px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, .25);
}
.dialog-head { display: flex; justify-content: space-between; align-items: center; gap: 8px; font-size: 16px; margin-bottom: 16px; }
.dialog-head span { min-width: 0; overflow-wrap: anywhere; }
.close-btn { border: 0; background: none; font-size: 16px; cursor: pointer; color: var(--muted); padding: 4px 8px; }
.drop {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  height: 180px;
  border: 1px dashed #c4c7c5;
  border-radius: 8px;
  background: var(--btn-bg);
  color: var(--muted);
  font-size: 16px;
  cursor: pointer;
}
.drop.hover { border-color: var(--blue); background: #e8f0fe; }
.drop svg { width: 48px; height: 48px; }
.drop .link { color: #1a73e8; }
.drop input[type="file"] { position: absolute; width: 1px; height: 1px; opacity: 0; overflow: hidden; }
.or { display: flex; align-items: center; gap: 12px; margin: 16px 0; color: var(--muted); font-size: 12px; }
.or::before, .or::after { content: ""; flex: 1; border-top: 1px solid var(--border); }
.url-row { display: flex; gap: 12px; }
.url-row input {
  flex: 1;
  height: 40px;
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 0 16px;
  font: 14px Arial, Helvetica, sans-serif;
  min-width: 0;
}
.url-row button {
  height: 40px;
  padding: 0 20px;
  border-radius: 20px;
  border: 1px solid #dadce0;
  background: #fff;
  color: #1a73e8;
  font: 14px Arial, Helvetica, sans-serif;
  cursor: pointer;
}
.url-row button:hover { background: #f6fafe; }

@media (max-width: 600px) {
  .logo { font-size: 64px; letter-spacing: -4px; }
  .logo .bc { font-size: 16px; margin-left: 10px; }
  .center { margin-top: 24px; }
}