:root {
  --bg: #060d18;
  --bg-2: #0b1424;
  --panel: #0f1d31;
  --panel-2: #122642;
  --line: #1e3556;
  --accent: #5bc0eb;
  --accent-2: #1b3d5f;
  --text: #e6eef8;
  --muted: #8aa1bd;
  --error: #ff7b7b;
  --ok: #7be0a4;
  --warn: #f5c46b;
  --radius: 14px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica,
    Arial, sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  min-height: 100vh;
  background:
    radial-gradient(1200px 600px at 20% -10%, rgba(91, 192, 235, 0.08), transparent 60%),
    radial-gradient(1000px 500px at 110% 10%, rgba(27, 61, 95, 0.35), transparent 70%),
    var(--bg);
  color: var(--text);
}

.view {
  max-width: 920px;
  margin: 0 auto;
  padding: 32px 24px 80px;
}

/* ---- Login ---- */
.login-card {
  max-width: 420px;
  margin: 10vh auto 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
  align-items: center;
}
.login-card .logo { width: 100%; max-width: 340px; margin: 0 auto 4px; }
.login-card label,
.login-card input,
.login-card button,
.login-card p { width: 100%; }
.login-card h1 { margin: 0 0 8px; text-align: center; font-weight: 600; }
.login-card label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 13px;
  color: var(--muted);
}
.login-card input {
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px 12px;
  color: var(--text);
  font-size: 15px;
}
.login-card input:focus { outline: 2px solid var(--accent); }

/* ---- Topbar / Hero ---- */
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}
.logo { width: 240px; height: auto; }
.logo.small { width: 160px; height: auto; }

.hero { text-align: center; padding: 18px 0 28px; }
.hero h1 {
  margin: 0 0 10px;
  font-size: 42px;
  letter-spacing: -0.5px;
  background: linear-gradient(180deg, #cfe9f7 0%, #5bc0eb 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero p { margin: 0 auto; max-width: 560px; color: var(--muted); }

/* ---- Cards ---- */
.card {
  background: linear-gradient(180deg, var(--panel) 0%, var(--bg-2) 100%);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
  margin-bottom: 20px;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.35);
}

/* ---- Dropzone ---- */
.dropzone {
  border: 2px dashed #2a5070;
  border-radius: 12px;
  padding: 38px 18px;
  text-align: center;
  cursor: pointer;
  transition: all 0.15s ease;
  background: rgba(91, 192, 235, 0.03);
}
.dropzone:hover, .dropzone.dragover {
  border-color: var(--accent);
  background: rgba(91, 192, 235, 0.08);
}
.dropzone-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 14px;
  border-radius: 14px;
  background: rgba(91, 192, 235, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
}
.dropzone-title { margin: 0; font-size: 18px; font-weight: 600; }
.dropzone-hint { margin: 6px 0 0; color: var(--muted); font-size: 13px; }

.upload-list {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.upload-item {
  display: grid;
  grid-template-columns: 22px 1fr auto;
  gap: 12px;
  align-items: center;
  background: var(--bg-2);
  padding: 10px 14px;
  border-radius: 10px;
  border: 1px solid var(--line);
  font-size: 14px;
}
.upload-item .filename { color: var(--text); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.upload-item .meta { color: var(--muted); font-size: 12px; }
.upload-item.processing .status::after {
  content: "";
  width: 14px; height: 14px;
  border: 2px solid var(--accent);
  border-top-color: transparent;
  border-radius: 50%;
  display: inline-block;
  animation: spin 0.8s linear infinite;
}
.upload-item.ok .status { color: var(--ok); }
.upload-item.duplicate .status { color: var(--warn); }
.upload-item.failed .status { color: var(--error); }

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

/* ---- Month panel ---- */
.month-row {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.month-row label { color: var(--muted); }
.month-row select {
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px 12px;
  color: var(--text);
  font-size: 15px;
  min-width: 180px;
}
.month-row select:focus { outline: 2px solid var(--accent); }
.month-meta { margin: 12px 0 8px; color: var(--muted); font-size: 13px; }

.table-wrap { overflow-x: auto; }
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
th, td {
  text-align: left;
  padding: 10px 8px;
  border-bottom: 1px solid var(--line);
}
th { color: var(--muted); font-weight: 500; font-size: 12px; text-transform: uppercase; letter-spacing: 0.5px; }
td.num, th.num { text-align: right; }
td a { color: var(--accent); text-decoration: none; }
td a:hover { text-decoration: underline; }
.row-delete {
  background: transparent;
  border: 0;
  color: var(--muted);
  cursor: pointer;
  font-size: 18px;
  line-height: 1;
}
.row-delete:hover { color: var(--error); }

/* ---- Buttons ---- */
button.primary {
  background: linear-gradient(180deg, #5bc0eb 0%, #2c8cb8 100%);
  color: #051422;
  font-weight: 600;
  border: 0;
  border-radius: 10px;
  padding: 10px 16px;
  cursor: pointer;
  font-size: 14px;
  transition: filter 0.15s;
}
button.primary:hover:not(:disabled) { filter: brightness(1.08); }
button.primary:disabled { opacity: 0.4; cursor: not-allowed; }

button.ghost {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--muted);
  border-radius: 10px;
  padding: 8px 14px;
  cursor: pointer;
  font-size: 13px;
}
button.ghost:hover { color: var(--text); border-color: var(--accent); }

.error { color: var(--error); margin: 0; font-size: 13px; }
.muted { color: var(--muted); }

/* ---- Theme toggle button ---- */
.theme-toggle {
  position: fixed;
  top: 16px;
  left: 20px;
  z-index: 100;
  width: 38px;
  height: 38px;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--muted);
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
}
.theme-toggle:hover { color: var(--accent); border-color: var(--accent); }

/* ---- Light theme ---- */
[data-theme="light"] {
  --bg: #f2f6fb;
  --bg-2: #e6eef7;
  --panel: #ffffff;
  --panel-2: #edf4fb;
  --line: #c2d4e8;
  --accent: #1478ae;
  --accent-2: #d8edf9;
  --text: #0a1928;
  --muted: #5b7b9c;
  --error: #c42020;
  --ok: #1a7a3a;
  --warn: #956200;
}

[data-theme="light"] body {
  background:
    radial-gradient(1200px 600px at 20% -10%, rgba(20, 120, 174, 0.07), transparent 60%),
    radial-gradient(1000px 500px at 110% 10%, rgba(27, 61, 95, 0.06), transparent 70%),
    var(--bg);
}

[data-theme="light"] .card {
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.07);
}

[data-theme="light"] .hero h1 {
  background: linear-gradient(180deg, #1b5a8a 0%, #1478ae 100%);
  -webkit-background-clip: text;
  background-clip: text;
}

[data-theme="light"] .dropzone {
  border-color: #a8c4dc;
  background: rgba(20, 120, 174, 0.03);
}
[data-theme="light"] .dropzone:hover,
[data-theme="light"] .dropzone.dragover {
  border-color: var(--accent);
  background: rgba(20, 120, 174, 0.07);
}

[data-theme="light"] button.primary {
  background: linear-gradient(180deg, #1a8fd1 0%, #1068a0 100%);
  color: #fff;
}

/* ════════════════════════════════════════
   App layout — sidebar de chat
════════════════════════════════════════ */
.app-view { max-width: 1280px; }

.topbar-actions {
  display: flex;
  gap: 8px;
  align-items: center;
}

.chat-btn {
  display: flex;
  align-items: center;
  gap: 6px;
}

.app-layout {
  display: flex;
  gap: 20px;
  align-items: flex-start;
}

.main-content { flex: 1; min-width: 0; }

/* ════════════════════════════════════════
   Panel de chat
════════════════════════════════════════ */
/* El atributo [hidden] necesita !important para ganar a display:flex */
.chat-panel[hidden] { display: none !important; }

.chat-panel {
  width: 360px;
  flex-shrink: 0;
  background: linear-gradient(180deg, var(--panel) 0%, var(--bg-2) 100%);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  height: calc(100vh - 130px);
  position: sticky;
  top: 16px;
  overflow: hidden;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.35);
}

.chat-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 13px 14px 11px;
  border-bottom: 1px solid var(--line);
  flex-shrink: 0;
}

.chat-title {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
}

button.ghost-xs {
  background: transparent;
  border: 0;
  color: var(--muted);
  cursor: pointer;
  font-size: 15px;
  padding: 2px 7px;
  border-radius: 6px;
  line-height: 1.4;
}
button.ghost-xs:hover { color: var(--text); background: var(--panel-2); }

.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  scroll-behavior: smooth;
}

.chat-msg {
  padding: 9px 13px;
  border-radius: 12px;
  font-size: 14px;
  line-height: 1.55;
  max-width: 88%;
  word-break: break-word;
  white-space: pre-wrap;
}

.chat-msg--user {
  background: var(--accent-2);
  border: 1px solid rgba(91, 192, 235, 0.25);
  align-self: flex-end;
  border-bottom-right-radius: 4px;
}

.chat-msg--assistant {
  background: var(--panel-2);
  border: 1px solid var(--line);
  align-self: flex-start;
  border-bottom-left-radius: 4px;
}

.chat-msg--streaming::after {
  content: "▋";
  color: var(--accent);
  animation: cursor-blink 0.7s step-end infinite;
  margin-left: 1px;
}

@keyframes cursor-blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

.chat-input-area {
  display: flex;
  gap: 8px;
  padding: 10px 12px;
  border-top: 1px solid var(--line);
  align-items: flex-end;
  flex-shrink: 0;
}

#chat-input {
  flex: 1;
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 9px 12px;
  color: var(--text);
  font-size: 14px;
  font-family: inherit;
  resize: none;
  max-height: 100px;
  overflow-y: auto;
  line-height: 1.4;
}
#chat-input:focus { outline: 2px solid var(--accent); }
#chat-input::placeholder { color: var(--muted); }
#chat-input:disabled { opacity: 0.5; }

.chat-send { padding: 9px 11px; flex-shrink: 0; }

/* Light theme — chat */
[data-theme="light"] .chat-panel {
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.07);
}
[data-theme="light"] .chat-msg--user {
  border-color: rgba(20, 120, 174, 0.25);
}