:root {
  --ink: #0a0a0a;
  --paper: #f5f5f0;
  --paper-2: #ffffff;
  --ink-dim: rgba(10, 10, 10, 0.62);
  --ink-faint: rgba(10, 10, 10, 0.32);
  --ink-ghost: rgba(10, 10, 10, 0.12);
  --green: #01bd05;
  --green-soft: rgba(1, 189, 5, 0.12);
  --red: #c1121f;
  --shadow-soft: 0 8px 32px rgba(10, 10, 10, 0.06);
  --shadow-sharp: 0 2px 8px rgba(10, 10, 10, 0.08);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  height: 100%;
  background: var(--paper);
  color: var(--ink);
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.hidden { display: none !important; }

button {
  font-family: inherit;
  font-size: 14px;
  font-weight: 500;
  border: none;
  cursor: pointer;
  border-radius: 4px;
  transition: background 0.15s, transform 0.05s;
}
button:active { transform: translateY(1px); }
button.primary {
  background: var(--ink);
  color: var(--paper-2);
  padding: 10px 22px;
}
button.primary:hover { background: #222; }
button.secondary {
  background: var(--paper-2);
  color: var(--ink);
  border: 1px solid var(--ink-faint);
  padding: 10px 22px;
}
button.secondary:hover { border-color: var(--ink); }
button.secondary.small { padding: 6px 14px; font-size: 13px; }
button.ghost {
  background: transparent;
  color: var(--ink-dim);
  padding: 6px 12px;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
button.ghost:hover { color: var(--ink); background: var(--ink-ghost); }

input[type="text"], textarea {
  font-family: inherit;
  font-size: 14px;
  background: var(--paper-2);
  border: 1px solid var(--ink-faint);
  border-radius: 4px;
  padding: 10px 14px;
  color: var(--ink);
  outline: none;
  width: 100%;
  resize: none;
}
input[type="text"]:focus, textarea:focus { border-color: var(--green); }

code {
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  background: var(--paper-2);
  border: 1px solid var(--ink-ghost);
  border-radius: 3px;
  padding: 2px 8px;
  font-size: 13px;
  color: var(--ink);
}

/* ───── LANDING ───── */
.landing {
  display: flex; align-items: center; justify-content: center;
  min-height: 100vh; padding: 40px;
}
.landing-card {
  max-width: 540px; width: 100%;
  background: var(--paper-2);
  border-radius: 8px;
  padding: 56px 48px;
  box-shadow: var(--shadow-soft);
  text-align: center;
}
.brand {
  font-family: "Fraunces", Georgia, serif;
  font-style: italic; font-weight: 500;
  font-size: 56px;
  letter-spacing: -0.025em;
  line-height: 1;
}
.brand-mark { color: var(--green); margin-right: 6px; }
.brand-sub {
  font-family: "IBM Plex Mono", monospace;
  font-size: 12px; font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.32em;
  color: var(--ink-faint);
  margin-top: 16px;
}
.landing-actions {
  margin-top: 48px;
  display: flex; flex-direction: column; gap: 20px;
  align-items: center;
}
.landing-actions .primary { width: 240px; padding: 14px; font-size: 15px; }
.divider {
  font-family: "IBM Plex Mono", monospace;
  font-size: 11px; letter-spacing: 0.32em;
  text-transform: uppercase; color: var(--ink-faint);
}
.resume {
  display: flex; gap: 8px; width: 100%; max-width: 360px;
}
.resume input {
  font-family: "IBM Plex Mono", monospace;
  letter-spacing: 0.08em;
}
.hint {
  margin-top: 40px;
  font-size: 13px;
  color: var(--ink-dim);
  font-style: italic;
  font-family: "Fraunces", Georgia, serif;
}

/* ───── WORKSPACE ───── */
.workspace { height: 100vh; display: flex; flex-direction: column; }
.topbar {
  padding: 14px 28px;
  border-bottom: 1px solid var(--ink-ghost);
  display: flex; align-items: center; gap: 28px;
  background: var(--paper-2);
}
.brand-mini {
  font-family: "Fraunces", Georgia, serif;
  font-style: italic; font-weight: 500;
  font-size: 20px;
}
.project-code {
  display: flex; align-items: center; gap: 10px;
  margin-left: auto;
}
.project-code .label {
  font-family: "IBM Plex Mono", monospace;
  font-size: 11px;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.grid {
  display: grid;
  grid-template-columns: 1fr 420px;
  flex: 1; min-height: 0;
}

/* ───── CHAT ───── */
.chat-col {
  display: flex; flex-direction: column;
  border-right: 1px solid var(--ink-ghost);
  min-height: 0;
}
.chat-log {
  flex: 1; overflow-y: auto;
  padding: 28px;
  display: flex; flex-direction: column; gap: 16px;
}
.msg {
  max-width: 760px;
  padding: 12px 16px;
  border-radius: 6px;
  word-wrap: break-word;
  white-space: pre-wrap;
  font-size: 14px;
}
.msg.user {
  background: var(--ink);
  color: var(--paper-2);
  align-self: flex-end;
}
.msg.assistant {
  background: var(--paper-2);
  border: 1px solid var(--ink-ghost);
  color: var(--ink);
  align-self: flex-start;
}
.msg.tool {
  background: var(--green-soft);
  border-left: 3px solid var(--green);
  font-family: "IBM Plex Mono", monospace;
  font-size: 12px;
  color: var(--ink-dim);
  align-self: flex-start;
  max-width: 760px;
  padding: 8px 12px;
}
.msg.tool .tool-name {
  color: var(--green);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}
.msg.tool .tool-summary { color: var(--ink); margin-top: 2px; }
.msg.error {
  background: rgba(193, 18, 31, 0.08);
  border: 1px solid var(--red);
  color: var(--red);
  font-size: 13px;
  align-self: flex-start;
}
.msg-meta {
  font-family: "IBM Plex Mono", monospace;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--ink-faint);
  margin-bottom: 4px;
}
.chat-form {
  padding: 16px 28px 24px;
  border-top: 1px solid var(--ink-ghost);
  background: var(--paper);
}
.chat-form textarea { margin-bottom: 8px; }
.chat-actions {
  display: flex; gap: 8px; justify-content: flex-end;
}

/* ───── SIDE COL ───── */
.side-col {
  display: flex; flex-direction: column;
  background: var(--paper);
  min-height: 0;
}
.panel {
  border-bottom: 1px solid var(--ink-ghost);
  display: flex; flex-direction: column;
  min-height: 0;
}
.panel:first-child { flex: 1 1 40%; }
.panel:last-child { flex: 1 1 60%; min-height: 300px; }
.panel-header {
  padding: 14px 22px;
  display: flex; align-items: center; justify-content: space-between;
  background: var(--paper-2);
  border-bottom: 1px solid var(--ink-ghost);
}
.panel-header h2 {
  font-family: "IBM Plex Mono", monospace;
  font-size: 11px; font-weight: 600;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--ink);
}
.upload-btn {
  cursor: pointer;
  font-family: "IBM Plex Mono", monospace;
  font-size: 11px; font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--green);
  padding: 4px 10px;
  border: 1px dashed var(--green);
  border-radius: 3px;
}
.upload-btn:hover { background: var(--green-soft); }

.file-list {
  list-style: none;
  flex: 1; overflow-y: auto;
  padding: 8px 12px;
}
.file-list li {
  padding: 8px 12px;
  display: flex; align-items: center; justify-content: space-between;
  gap: 10px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 13px;
  font-family: "IBM Plex Mono", monospace;
}
.file-list li:hover { background: var(--ink-ghost); }
.file-list li.active { background: var(--green-soft); color: var(--ink); }
.file-list .file-name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.file-list .file-size { font-size: 11px; color: var(--ink-faint); }
.file-list .empty {
  padding: 24px; text-align: center;
  color: var(--ink-faint); font-style: italic;
  font-family: "Fraunces", Georgia, serif;
}

.preview-area {
  flex: 1; padding: 16px;
  display: flex; align-items: center; justify-content: center;
  background: var(--paper-2);
  position: relative;
}
.preview-area video, .preview-area img {
  max-width: 100%; max-height: 100%;
  border-radius: 4px;
  box-shadow: var(--shadow-sharp);
}
.preview-empty {
  font-family: "Fraunces", Georgia, serif;
  font-style: italic;
  color: var(--ink-faint);
  text-align: center;
}
.render-progress {
  position: absolute;
  bottom: 16px; left: 50%; transform: translateX(-50%);
  background: var(--ink); color: var(--paper-2);
  padding: 8px 18px; border-radius: 20px;
  font-family: "IBM Plex Mono", monospace;
  font-size: 12px; letter-spacing: 0.2em;
}