*,
*::before,
*::after {
  box-sizing: border-box;
}

:root {
  --ink: #15201a;
  --ink-soft: #2a3a32;
  --muted: #5e7268;
  --paper: #f3f1ea;
  --panel: rgba(255, 252, 246, 0.88);
  --line: rgba(21, 32, 26, 0.12);
  --accent: #1f8a4c;
  --accent-deep: #166b3a;
  --accent-soft: #d8f3e3;
  --warn: #b42318;
  --radius: 18px;
  --font-display: "Syne", system-ui, sans-serif;
  --font-body: "Figtree", system-ui, sans-serif;
  --safe-bottom: env(safe-area-inset-bottom, 0px);
}

html,
body {
  margin: 0;
  min-height: 100%;
  min-height: 100dvh;
}

body {
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--paper);
  display: flex;
  align-items: stretch;
  justify-content: center;
  padding:
    max(16px, env(safe-area-inset-top))
    max(16px, env(safe-area-inset-right))
    max(16px, var(--safe-bottom))
    max(16px, env(safe-area-inset-left));
  position: relative;
  overflow-x: hidden;
}

.atmosphere {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(120% 80% at 10% -10%, #cfe8d8 0%, transparent 55%),
    radial-gradient(90% 70% at 110% 20%, #e7dcc4 0%, transparent 50%),
    linear-gradient(165deg, #ebe7dc 0%, #dfe8e1 48%, #d5e0d8 100%);
}

.atmosphere::after {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.35;
  background-image:
    linear-gradient(rgba(21, 32, 26, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(21, 32, 26, 0.04) 1px, transparent 1px);
  background-size: 28px 28px;
  mask-image: radial-gradient(ellipse at center, #000 30%, transparent 80%);
  animation: grid-drift 28s linear infinite;
}

@keyframes grid-drift {
  from { background-position: 0 0, 0 0; }
  to { background-position: 28px 28px, 28px 28px; }
}

.app {
  position: relative;
  z-index: 1;
  width: min(100%, 440px);
  min-height: calc(100dvh - 32px);
  display: flex;
  flex-direction: column;
  gap: 18px;
  animation: rise-in 0.55s cubic-bezier(0.22, 1, 0.36, 1) both;
}

@keyframes rise-in {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 4px 2px;
}

.brand-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  flex-shrink: 0;
  box-shadow: 0 8px 20px rgba(21, 32, 26, 0.12);
  animation: icon-pop 0.7s cubic-bezier(0.22, 1, 0.36, 1) 0.1s both;
}

@keyframes icon-pop {
  from {
    opacity: 0;
    transform: scale(0.86) rotate(-4deg);
  }
  to {
    opacity: 1;
    transform: scale(1) rotate(0deg);
  }
}

.brand-copy {
  min-width: 0;
}

.brand-kicker {
  margin: 0 0 2px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.brand h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.55rem, 6vw, 1.9rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.05;
  color: var(--ink);
}

.brand-sub {
  margin: 4px 0 0;
  font-size: 0.88rem;
  color: var(--muted);
}

.main-panel {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-height: 0;
}

.hidden {
  display: none !important;
}

.drop-zone {
  flex: 1;
  min-height: 240px;
  border: 1.5px dashed rgba(21, 32, 26, 0.28);
  border-radius: var(--radius);
  background:
    linear-gradient(180deg, rgba(255, 252, 246, 0.92), rgba(245, 248, 244, 0.8));
  backdrop-filter: blur(8px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  cursor: pointer;
  padding: 28px 20px;
  text-align: center;
  transition:
    border-color 0.2s ease,
    background 0.2s ease,
    transform 0.25s cubic-bezier(0.22, 1, 0.36, 1),
    box-shadow 0.25s ease;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.7);
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

.drop-zone:hover,
.drop-zone:focus-visible {
  border-color: var(--accent);
  outline: none;
  transform: translateY(-2px);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.7),
    0 14px 30px rgba(21, 32, 26, 0.08);
}

.drop-zone.drag-over {
  border-style: solid;
  border-color: var(--accent);
  background: var(--accent-soft);
  transform: scale(1.01);
}

.drop-glyph {
  display: grid;
  place-items: center;
  width: 64px;
  height: 64px;
  border-radius: 18px;
  color: var(--accent-deep);
  background: var(--accent-soft);
  margin-bottom: 6px;
  animation: float-soft 3.2s ease-in-out infinite;
}

@keyframes float-soft {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-5px); }
}

.central-text {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.drop-hint {
  margin: 0;
  font-size: 0.86rem;
  color: var(--muted);
  max-width: 16rem;
  line-height: 1.35;
}

.queue-panel {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-height: 0;
  padding: 16px;
  border-radius: var(--radius);
  background: var(--panel);
  border: 1px solid var(--line);
  backdrop-filter: blur(8px);
}

.queue-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 700;
}

.queue-list {
  list-style: none;
  margin: 0;
  padding: 0;
  flex: 1;
  min-height: 120px;
  max-height: min(40vh, 260px);
  overflow-y: auto;
  border-radius: 12px;
  background: rgba(21, 32, 26, 0.03);
}

.queue-list li {
  padding: 12px 14px;
  font-size: 0.9rem;
  cursor: pointer;
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: background 0.15s ease;
}

.queue-list li:last-child {
  border-bottom: none;
}

.queue-list li.selected {
  background: var(--accent-soft);
  color: var(--accent-deep);
  font-weight: 600;
}

.queue-list li:hover {
  background: rgba(21, 32, 26, 0.05);
}

.queue-actions {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 10px;
}

.btn {
  border: none;
  border-radius: 12px;
  padding: 14px 16px;
  font-size: 0.95rem;
  font-family: inherit;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease, opacity 0.15s ease;
  touch-action: manipulation;
}

.btn:active:not(:disabled) {
  transform: scale(0.98);
}

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover:not(:disabled) {
  background: var(--accent-deep);
}

.btn-secondary {
  background: rgba(21, 32, 26, 0.06);
  color: var(--ink-soft);
}

.btn-secondary:hover:not(:disabled) {
  background: rgba(21, 32, 26, 0.1);
}

.progress-panel {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 4px 2px;
}

.progress-track {
  width: 100%;
  height: 10px;
  background: rgba(21, 32, 26, 0.08);
  border-radius: 999px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--accent), #3cbc6d);
  transition: width 0.2s ease;
}

.progress-fill.indeterminate {
  width: 38% !important;
  animation: indeterminate 1.15s ease-in-out infinite;
}

@keyframes indeterminate {
  0% { transform: translateX(-110%); }
  100% { transform: translateX(280%); }
}

.progress-text {
  margin: 0;
  font-size: 0.86rem;
  color: var(--muted);
  text-align: center;
  white-space: pre-line;
}

.loader-panel {
  flex: 1;
  min-height: 240px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  text-align: center;
  padding: 28px 20px;
  border-radius: var(--radius);
  background: var(--panel);
  border: 1px solid var(--line);
  backdrop-filter: blur(8px);
}

.loader-ring {
  width: 44px;
  height: 44px;
  border: 3px solid rgba(21, 32, 26, 0.1);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.75s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.loader-panel p {
  margin: 0;
  font-size: 0.95rem;
  font-weight: 500;
}

.loader-hint {
  color: var(--muted);
  font-size: 0.84rem !important;
  font-weight: 400 !important;
}

.app-footer {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  color: var(--muted);
  font-size: 0.78rem;
  padding-bottom: 4px;
}

.app-footer .dot {
  opacity: 0.5;
}

.toast {
  position: fixed;
  bottom: calc(20px + var(--safe-bottom));
  left: 50%;
  transform: translateX(-50%);
  background: var(--ink);
  color: #f7f5ef;
  padding: 12px 16px;
  border-radius: 12px;
  font-size: 0.88rem;
  max-width: min(92vw, 360px);
  z-index: 100;
  text-align: center;
  animation: toast-in 0.3s ease both;
}

@keyframes toast-in {
  from {
    opacity: 0;
    transform: translate(-50%, 8px);
  }
  to {
    opacity: 1;
    transform: translate(-50%, 0);
  }
}

.toast.error {
  background: var(--warn);
}

.toast.success {
  background: var(--accent-deep);
}

@media (min-width: 640px) {
  body {
    align-items: center;
    padding: 28px;
  }

  .app {
    min-height: auto;
    max-height: min(860px, calc(100dvh - 56px));
  }

  .drop-zone,
  .loader-panel {
    min-height: 320px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}