:root {
  --bg-0: #04070d;
  --bg-1: #0a0f18;
  --tile: #0f1623;
  --tile-2: #111b2b;
  --line: #1d2b43;
  --text: #e7f0ff;
  --muted: #8ea6c8;
  --accent: #0a84ff;
  --accent-2: #0660cb;
  --accent-soft: #0f253d;
  --danger: #ff5d78;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Bahnschrift', 'Segoe UI', 'Arial Narrow', sans-serif;
  color: var(--text);
  background:
    linear-gradient(145deg, rgba(10, 132, 255, 0.08), transparent 35%),
    repeating-linear-gradient(
      0deg,
      rgba(255, 255, 255, 0.02) 0,
      rgba(255, 255, 255, 0.02) 1px,
      transparent 1px,
      transparent 34px
    ),
    linear-gradient(180deg, var(--bg-1), var(--bg-0));
  min-height: 100vh;
  letter-spacing: 0.02em;
}

body.modal-open {
  overflow: hidden;
}

.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 1.2rem;
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 14px;
}

.hero {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 1fr);
  gap: 14px;
}

.hero-brand,
.hero-tile {
  background: linear-gradient(180deg, var(--tile), #0b121d);
  border: 1px solid var(--line);
  padding: 1rem;
}

h1 {
  margin: 0 0 0.4rem;
  font-size: clamp(1.6rem, 2.7vw, 2.4rem);
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.subtitle {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.hero-tiles {
  display: grid;
  grid-template-rows: 1fr 1fr;
  gap: 14px;
}

.hero-tile {
  display: grid;
  place-items: center start;
  text-transform: uppercase;
  color: #cfe2ff;
  font-size: 0.83rem;
  font-weight: 600;
}

.hero-tile.accent {
  background: linear-gradient(180deg, var(--accent-soft), #0b1f35);
  border-color: #2a4e79;
  color: #8cc4ff;
}

.panel {
  grid-column: span 6;
  background: linear-gradient(180deg, var(--tile), #0c1320);
  border: 1px solid var(--line);
  padding: 1rem;
}

.panel h2 {
  margin: 0 0 0.95rem;
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #bcd3f3;
}

.label {
  display: block;
  font-size: 0.82rem;
  text-transform: uppercase;
  color: #99b2d4;
  margin-bottom: 0.35rem;
}

input[type='text'],
input[type='number'] {
  width: 100%;
  padding: 0.62rem 0.64rem;
  border: 1px solid #263a58;
  border-radius: 0;
  margin-bottom: 0.8rem;
  background: #0a111d;
  color: var(--text);
  font-family: inherit;
}

input[type='text']::placeholder {
  color: #6b83a6;
}

input[type='text']:focus,
input[type='number']:focus {
  outline: none;
  border-color: #3984d3;
  box-shadow: inset 0 0 0 1px #3984d3;
}

.hidden-input {
  display: none;
}

.source-box {
  border: 1px dashed #32527f;
  border-radius: 0;
  padding: 0.85rem;
  margin-bottom: 0.95rem;
  background: linear-gradient(180deg, #0f1a2a, #0c1422);
  transition: border-color 0.15s ease, background-color 0.15s ease;
}

.source-box.dragover {
  border-color: #61acff;
  background: #102239;
}

.source-actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.55rem;
}

.selection-info {
  margin: 0.72rem 0 0;
  color: var(--muted);
  font-size: 0.84rem;
}

.expire-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.65rem;
  margin-bottom: 0.45rem;
}

.small-label {
  display: block;
  font-size: 0.74rem;
  text-transform: uppercase;
  color: #91a8c8;
  margin-bottom: 0.35rem;
}

.inline {
  display: flex;
  gap: 0.55rem;
  align-items: flex-start;
  margin: 0.2rem 0 0.95rem;
  color: var(--muted);
  font-size: 0.84rem;
}

.upload-actions {
  display: flex;
  gap: 0.55rem;
  align-items: center;
}

button {
  border: 1px solid #2f4c74;
  background: linear-gradient(180deg, var(--accent), var(--accent-2));
  color: #e9f4ff;
  border-radius: 0;
  padding: 0.62rem 1rem;
  cursor: pointer;
  font-weight: 700;
  font-family: inherit;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  transition: filter 0.15s ease, transform 0.12s ease;
}

button:hover {
  filter: brightness(1.08);
}

button:active {
  transform: translateY(1px);
}

button.secondary {
  background: linear-gradient(180deg, #163152, #122a45);
  border-color: #36557f;
  color: #9ecbff;
}

.status {
  min-height: 1.2rem;
  margin: 0.75rem 0 0;
  color: #8fa8ca;
  font-size: 0.84rem;
}

.status.error {
  color: var(--danger);
}

.progress-wrap {
  margin-top: 0.85rem;
}

.progress-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.78rem;
  text-transform: uppercase;
  color: #9fb6d5;
  margin-bottom: 0.35rem;
}

.progress-track {
  width: 100%;
  height: 10px;
  border-radius: 0;
  background: #0a111d;
  overflow: hidden;
  border: 1px solid #274062;
}

.progress-bar {
  width: 0%;
  height: 100%;
  background: linear-gradient(90deg, #168eff, #4ab1ff);
  transition: width 0.18s ease;
}

.progress-track.indeterminate .progress-bar {
  width: 40%;
  animation: progress-indeterminate 1.1s linear infinite;
}

@keyframes progress-indeterminate {
  0% {
    transform: translateX(-120%);
  }
  100% {
    transform: translateX(260%);
  }
}

.result {
  margin-top: 0.85rem;
  padding: 0.75rem;
  background: linear-gradient(180deg, #102036, #0d1a2d);
  border: 1px solid #2e517e;
  border-radius: 0;
  font-size: 0.9rem;
  line-height: 1.55;
}

.result code {
  font-size: 1.15rem;
  letter-spacing: 0.09em;
  font-weight: 700;
  color: #8ec7ff;
}

.copy-link-btn {
  margin-left: 0.3rem;
  margin-right: 0.55rem;
  padding: 0.35rem 0.58rem;
  border-radius: 0;
  font-size: 0.72rem;
  background: linear-gradient(180deg, #183459, #142d4d);
  border-color: #36557f;
  color: #9ecbff;
}

.copy-link-btn:hover {
  filter: brightness(1.1);
}

.cancel-btn {
  background: linear-gradient(180deg, #602337, #4c1b2c);
  border-color: #8b3a56;
  color: #ffd4df;
}

#uploadOtherBtn {
  margin-top: 0.85rem;
}

.otp-wrap {
  display: grid;
  grid-template-columns: repeat(8, minmax(0, 1fr));
  gap: 0.42rem;
  margin-bottom: 0.85rem;
}

.otp-char {
  height: 56px;
  border: 1px solid #32527f;
  background: linear-gradient(180deg, #0f1a2a, #0b1320);
  color: #d9ecff;
  text-align: center;
  font-size: 1.45rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  border-radius: 0;
  outline: none;
}

.otp-char:focus {
  border-color: #4ca0ff;
  box-shadow: inset 0 0 0 1px #4ca0ff;
}

.qr-modal {
  position: fixed;
  inset: 0;
  z-index: 1500;
  background: rgba(4, 8, 14, 0.86);
  display: grid;
  place-items: center;
  padding: 1rem;
}

.qr-modal-card {
  width: min(92vw, 620px);
  background: linear-gradient(180deg, #0f1929, #0b1320);
  border: 1px solid #31527f;
  border-radius: 0;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.55);
  padding: 0.95rem;
}

.qr-modal-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.65rem;
}

.qr-modal-head h3 {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.96rem;
  color: #c9dcf7;
}

.qr-close-btn {
  margin: 0;
}

.qr-modal-image {
  width: min(100%, 520px);
  height: auto;
  display: block;
  margin: 0.9rem auto 0.55rem;
  image-rendering: pixelated;
  background: #fff;
  padding: 0.35rem;
}

.hidden {
  display: none;
}

@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
  }

  .hero-tiles {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    grid-template-rows: 1fr;
  }

  .panel {
    grid-column: 1 / -1;
  }
}

@media (max-width: 640px) {
  .container {
    margin: 0.5rem auto;
    padding: 0.8rem;
    gap: 10px;
  }

  .hero-tiles {
    grid-template-columns: 1fr;
  }

  .source-actions {
    grid-template-columns: 1fr;
  }

  .expire-grid {
    grid-template-columns: 1fr;
    gap: 0.2rem;
  }

  .otp-wrap {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0.5rem;
  }

  .otp-char {
    height: 52px;
    font-size: 1.35rem;
  }

  .qr-modal-card {
    padding: 0.75rem;
  }
}