:root {
  color-scheme: dark;
  --bg: #101617;
  --bg-soft: #151d1e;
  --panel: #1a2425;
  --panel-raised: #202c2d;
  --panel-muted: #172021;
  --ink: #f2f5ef;
  --muted: #9baaa7;
  --faint: #6e7d7b;
  --line: #2d3b3b;
  --line-strong: #405050;
  --mint: #a8e5b9;
  --mint-strong: #72d69a;
  --mint-ink: #10271d;
  --coral: #f39a7d;
  --coral-strong: #ffb095;
  --coral-ink: #351b16;
  --danger: #f1a39a;
  --shadow: 0 18px 45px rgba(0, 0, 0, 0.18);
  --radius: 8px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button, input, textarea { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button { cursor: pointer; }
button:focus-visible, a:focus-visible, input:focus-visible, textarea:focus-visible, summary:focus-visible {
  outline: 2px solid var(--mint-strong);
  outline-offset: 3px;
}

.app-shell { display: flex; min-height: 100vh; }

.sidebar {
  position: fixed;
  inset: 0 auto 0 0;
  display: flex;
  flex-direction: column;
  width: 252px;
  padding: 28px 18px 20px;
  background: #0d1314;
  border-right: 1px solid #253131;
}

.brand, .mobile-brand { color: var(--ink); text-decoration: none; }
.brand { display: flex; align-items: center; gap: 11px; padding: 0 10px; }
.brand-mark, .login-mark {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 7px;
  background: var(--mint);
  color: var(--mint-ink);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0;
}
.brand-copy { display: grid; gap: 2px; }
.brand-copy strong { font-size: 16px; }
.brand-copy small, .connection-status small { color: var(--muted); font-size: 11px; }
.sidebar-label { margin: 58px 10px 12px; color: var(--faint); font-size: 10px; font-weight: 800; letter-spacing: 0.12em; text-transform: uppercase; }
.main-nav { display: grid; gap: 5px; }
.nav-item {
  display: flex;
  align-items: center;
  gap: 11px;
  min-height: 44px;
  padding: 0 11px;
  border-radius: 6px;
  color: var(--muted);
  font-size: 13px;
  text-decoration: none;
}
.nav-item.active { background: #20302d; color: var(--mint); }
.nav-item.disabled { opacity: 0.55; cursor: default; }
.nav-icon { width: 18px; color: currentColor; font-size: 18px; text-align: center; }
.nav-status { margin-left: auto; color: var(--mint-strong); font-size: 10px; }
.nav-status.soon { color: var(--faint); }
.sidebar-bottom { display: grid; gap: 20px; margin-top: auto; padding: 17px 10px 0; border-top: 1px solid #253131; }
.connection-status { display: flex; align-items: flex-start; gap: 9px; }
.connection-status span:last-child { display: grid; gap: 3px; }
.connection-status strong { font-size: 12px; font-weight: 650; }
.status-dot { width: 8px; height: 8px; margin-top: 4px; border-radius: 50%; background: var(--mint-strong); box-shadow: 0 0 0 4px rgba(114, 214, 154, 0.1); }
.version { color: var(--faint); font-size: 11px; }

.main-shell { width: calc(100% - 252px); max-width: 1380px; margin-left: 252px; padding: 37px clamp(24px, 4vw, 64px) 64px; }
.topbar { display: flex; align-items: flex-start; justify-content: space-between; gap: 22px; margin-bottom: 38px; }
.mobile-brand { display: none; }
.topbar-copy { min-width: 0; }
.eyebrow, .section-kicker { margin: 0 0 8px; color: var(--mint-strong); font-size: 10px; font-weight: 800; letter-spacing: 0.13em; text-transform: uppercase; }
h1, h2, p { margin: 0; }
h1 { font-size: 32px; line-height: 1.05; letter-spacing: 0; }
h2 { font-size: 18px; line-height: 1.18; letter-spacing: 0; }
.topbar-subtitle { margin-top: 9px; color: var(--muted); font-size: 13px; }
.top-actions { display: flex; align-items: center; gap: 8px; }

.panel { min-width: 0; border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); box-shadow: var(--shadow); }
.hidden { display: none !important; }
.login-panel { width: 100%; max-width: 440px; margin: 10vh auto 0; padding: 32px; }
.login-mark { width: 48px; height: 48px; margin-bottom: 30px; }
.login-panel h2 { font-size: 25px; }
.login-copy { margin: 9px 0 27px; color: var(--muted); font-size: 13px; }
.stack { display: grid; gap: 11px; min-width: 0; }
.field-label { color: var(--muted); font-size: 12px; font-weight: 650; }
.password-field { position: relative; }
input, textarea {
  width: 100%;
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  background: var(--panel-muted);
  color: var(--ink);
  padding: 12px 13px;
  outline: none;
}
input::placeholder, textarea::placeholder { color: #71817e; }
input:focus, textarea:focus { border-color: var(--mint-strong); background: var(--bg-soft); }
textarea { resize: vertical; line-height: 1.45; }
.password-field input { padding-right: 46px; }
.field-action { position: absolute; top: 4px; right: 4px; width: 37px; height: 37px; border: 0; border-radius: 5px; background: transparent; color: var(--muted); }
.field-action:hover { background: var(--panel-raised); color: var(--ink); }
.submit-button, .download { display: inline-flex; align-items: center; justify-content: space-between; gap: 14px; min-height: 43px; border: 0; border-radius: 6px; padding: 0 14px; background: var(--mint); color: var(--mint-ink); font-weight: 750; text-decoration: none; }
.submit-button:hover, .download:hover { background: var(--mint-strong); }
.form-status { min-height: 18px; margin-top: 13px; color: var(--coral); font-size: 12px; }
.icon-button { display: inline-flex; align-items: center; gap: 8px; min-height: 39px; border: 1px solid var(--line-strong); border-radius: 6px; padding: 0 12px; background: transparent; color: var(--muted); font-size: 12px; }
.icon-button:hover { border-color: var(--mint-strong); color: var(--mint); }
.icon-button > span:first-child { font-size: 17px; line-height: 1; }
.secondary { background: transparent; }

.workspace { display: grid; gap: 20px; }
.workspace-intro { display: flex; align-items: flex-end; justify-content: space-between; gap: 20px; }
.workspace-intro h2 { font-size: 25px; }
.summary-stats { display: flex; align-items: center; gap: 25px; padding-bottom: 2px; }
.summary-stat { display: grid; gap: 3px; min-width: 70px; }
.summary-stat strong { font-size: 21px; line-height: 1; }
.summary-stat span { color: var(--muted); font-size: 11px; }
.transfer-grid { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(300px, 0.8fr); gap: 20px; }
.upload-panel, .text-panel { padding: 22px; }
.panel-heading, .feed-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 18px; }
.panel-heading { margin-bottom: 18px; }
.section-kicker { display: block; margin-bottom: 7px; color: var(--muted); }
.heading-icon { display: grid; place-items: center; width: 34px; height: 34px; border-radius: 6px; font-size: 21px; }
.heading-icon.mint { background: rgba(168, 229, 185, 0.14); color: var(--mint); }
.heading-icon.coral { background: rgba(243, 154, 125, 0.14); color: var(--coral); }
.drop-zone { position: relative; display: grid; place-items: center; gap: 7px; min-height: 264px; overflow: hidden; border: 1px dashed #4c6862; border-radius: 6px; background: #172523; color: var(--ink); padding: 28px; text-align: center; cursor: pointer; transition: border-color 140ms ease, background 140ms ease, transform 140ms ease; }
.drop-zone input { position: absolute; width: 1px; height: 1px; opacity: 0; pointer-events: none; }
.drop-zone:hover, .drop-zone.drag-over { border-color: var(--mint-strong); background: #1b302a; }
.drop-zone.drag-over { transform: translateY(-1px); }
.drop-icon { display: grid; place-items: center; width: 52px; height: 52px; margin-bottom: 4px; border: 1px solid #4c6862; border-radius: 50%; color: var(--mint); font-size: 27px; }
.drop-title { font-size: 16px; font-weight: 750; }
.drop-meta { max-width: 90%; overflow-wrap: anywhere; color: var(--mint); font-size: 13px; }
.drop-hint { color: var(--faint); font-size: 11px; }
.upload-queue { display: grid; gap: 6px; margin-top: 11px; }
.queue-item { display: flex; align-items: center; gap: 10px; min-width: 0; padding: 10px 11px; border: 1px solid var(--line); border-radius: 6px; background: var(--panel-muted); font-size: 12px; }
.queue-icon { flex: 0 0 auto; color: var(--mint); font-size: 17px; }
.queue-name { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.queue-status { margin-left: auto; color: var(--muted); white-space: nowrap; }
.queue-item.success .queue-status { color: var(--mint-strong); }
.queue-item.error .queue-status { color: var(--coral); }
.advanced-options { margin-top: 12px; border-top: 1px solid var(--line); }
.advanced-options summary { display: flex; align-items: center; gap: 7px; padding-top: 13px; color: var(--muted); font-size: 12px; cursor: pointer; list-style: none; }
.advanced-options summary::-webkit-details-marker { display: none; }
.advanced-options[open] summary { color: var(--mint); }
.summary-plus { color: var(--mint-strong); font-size: 18px; line-height: 12px; }
.options-content { padding-top: 12px; }
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.coral-button { background: var(--coral); color: var(--coral-ink); }
.coral-button:hover { background: var(--coral-strong); }
.text-panel textarea { min-height: 168px; }

.feed-panel { padding: 22px; }
.feed-head { align-items: center; margin-bottom: 18px; }
.feed-head h2 { font-size: 22px; }
.status-text { color: var(--muted); font-size: 12px; }
.feed-toolbar { display: grid; grid-template-columns: minmax(180px, 1fr) auto; align-items: center; gap: 12px; margin-bottom: 18px; padding-bottom: 17px; border-bottom: 1px solid var(--line); }
.search-field { display: flex; align-items: center; gap: 8px; min-height: 40px; border: 1px solid var(--line-strong); border-radius: 6px; padding: 0 11px; background: var(--panel-muted); color: var(--muted); }
.search-field:focus-within { border-color: var(--mint-strong); }
.search-field input { min-height: 38px; border: 0; padding: 0; background: transparent; }
.search-field input:focus { background: transparent; }
.search-field > span { font-size: 21px; line-height: 1; }
.filter-bar { display: flex; gap: 4px; overflow-x: auto; padding: 3px; border: 1px solid var(--line); border-radius: 6px; background: var(--panel-muted); }
.filter-button { min-height: 32px; border: 0; border-radius: 4px; padding: 0 10px; background: transparent; color: var(--muted); font-size: 11px; white-space: nowrap; }
.filter-button:hover { color: var(--ink); }
.filter-button.active { background: var(--panel-raised); color: var(--mint); }
.items { display: grid; gap: 8px; }
.item { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; align-items: center; gap: 13px; min-width: 0; border: 1px solid var(--line); border-radius: 6px; padding: 13px; background: var(--panel-muted); }
.item:hover { border-color: var(--line-strong); background: var(--panel-raised); }
.item.done { opacity: 0.58; }
.item-icon { display: grid; place-items: center; width: 38px; height: 38px; border-radius: 6px; background: #263633; color: var(--mint); font-size: 20px; }
.item-icon.text-icon { background: #382d2a; color: var(--coral); }
.item-main { min-width: 0; }
.item-title { display: flex; align-items: center; gap: 8px; min-width: 0; margin-bottom: 4px; }
.item-title strong { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 13px; }
.pill { flex: 0 0 auto; display: inline-flex; align-items: center; min-height: 21px; border-radius: 999px; padding: 0 7px; background: #293536; color: var(--muted); font-size: 10px; }
.meta { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--muted); font-size: 11px; }
.text-preview { display: -webkit-box; max-width: 610px; margin-top: 5px; overflow: hidden; color: #c0cbc7; font-size: 12px; line-height: 1.4; -webkit-box-orient: vertical; -webkit-line-clamp: 2; }
.actions { display: flex; align-items: center; justify-content: flex-end; flex-wrap: wrap; gap: 6px; }
.actions button, .actions a { min-height: 33px; border: 1px solid var(--line-strong); border-radius: 5px; padding: 0 9px; font-size: 11px; }
.actions button { background: transparent; color: var(--muted); }
.actions button:hover { border-color: var(--mint-strong); color: var(--mint); }
.actions .download { border-color: transparent; background: var(--mint); color: var(--mint-ink); font-weight: 750; }
.actions .download:hover { background: var(--mint-strong); }
.actions .danger { color: var(--danger); }
.actions .danger:hover { border-color: var(--danger); color: var(--danger); }
.empty-state { display: grid; place-items: center; min-height: 170px; border: 1px dashed var(--line-strong); border-radius: 6px; color: var(--muted); text-align: center; }
.empty-state strong { display: block; margin-bottom: 5px; color: var(--ink); font-size: 13px; }
.empty-state p { font-size: 12px; }

@media (max-width: 1080px) {
  .sidebar { width: 220px; }
  .main-shell { width: calc(100% - 220px); margin-left: 220px; padding-right: 28px; padding-left: 28px; }
  .transfer-grid { grid-template-columns: 1fr; }
  .drop-zone { min-height: 220px; }
}

@media (max-width: 760px) {
  .app-shell { display: block; }
  .sidebar { position: static; display: block; width: auto; height: auto; padding: 14px 16px; border-right: 0; border-bottom: 1px solid #253131; }
  .brand, .sidebar-label, .sidebar-bottom { display: none; }
  .main-nav { display: flex; margin-top: 13px; overflow-x: auto; }
  .nav-item { flex: 0 0 auto; min-height: 35px; padding: 0 10px; font-size: 11px; }
  .nav-item.disabled { display: none; }
  .nav-status { display: none; }
  .main-shell { width: auto; margin-left: 0; padding: 25px 16px 40px; }
  .topbar { align-items: flex-start; flex-wrap: wrap; margin-bottom: 27px; }
  .mobile-brand { display: flex; align-items: center; gap: 8px; width: 100%; margin-bottom: 6px; font-size: 14px; }
  .mobile-brand .brand-mark { width: 28px; height: 28px; font-size: 9px; }
  h1 { font-size: 27px; }
  .topbar-subtitle { max-width: 280px; line-height: 1.4; }
  .top-actions { margin-left: auto; }
  .button-label { display: none; }
  .icon-button { width: 39px; justify-content: center; padding: 0; }
  .workspace-intro { align-items: flex-start; flex-direction: column; }
  .workspace-intro h2 { font-size: 22px; }
  .summary-stats { width: 100%; padding-bottom: 0; }
  .summary-stat { flex: 1; }
  .upload-panel, .text-panel, .feed-panel { padding: 17px; }
  .feed-toolbar { grid-template-columns: 1fr; }
  .filter-bar { width: 100%; }
  .item { grid-template-columns: auto minmax(0, 1fr); align-items: start; gap: 10px; }
  .actions { grid-column: 1 / -1; justify-content: flex-start; padding-top: 3px; }
  .item-title strong { white-space: normal; }
  .login-panel { margin-top: 5vh; padding: 25px 20px; }
}

@media (max-width: 420px) {
  .row { grid-template-columns: 1fr; }
  .drop-zone { min-height: 206px; padding: 20px 14px; }
  .drop-title { font-size: 15px; }
}