:root {
  color-scheme: light;
  font-family: "Segoe UI", system-ui, sans-serif;
  --ink: #162b35;
  --navy: #14343d;
  --muted: #4a6265;
  --green: #125943;
  --green-dark: #0b4534;
  --wash: #f1f5f3;
  --line: #d3e0da;
  --paper: #fff;
  --radius: 16px;
}
*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
body { margin: 0; background: var(--wash); color: var(--ink); line-height: 1.45; }
h1, h2, h3, p, ul { margin: 0; }
h1 { font-size: clamp(1.9rem, 4vw, 2.7rem); line-height: 1.1; letter-spacing: -.045em; }
h2 { font-size: 1.25rem; letter-spacing: -.015em; }
h3 { font-size: 1.09rem; }
:focus-visible { outline: 3px solid #aa5f14; outline-offset: 2px; }
.studio-header { background: var(--navy); color: #fff; }
.studio-header-inner {
  max-width: 1360px; margin: auto; padding: 14px clamp(16px, 3.5vw, 46px);
  display: flex; align-items: center; justify-content: space-between; gap: 14px;
}
.studio-brand { display: flex; align-items: center; gap: 12px; }
.studio-brand strong { font-size: 1.25rem; white-space: nowrap; }
.studio-mark {
  display: grid; place-items: center; width: 46px; height: 46px; flex: 0 0 46px;
  border-radius: 13px; background: #c6e9d3; color: #113e32; font-weight: 800; letter-spacing: -.04em;
}
.studio-kicker { font-size: .73rem; text-transform: uppercase; letter-spacing: .12em; font-weight: 750; color: var(--green); }
.studio-header .studio-kicker { color: #c6e9d3; font-size: .67rem; }
.studio-shell {
  width: 100%; max-width: 1360px; margin: auto;
  padding: clamp(16px, 3.5vw, 46px);
  display: grid; grid-template-columns: minmax(220px, 280px) minmax(0, 1fr); gap: clamp(16px, 2.6vw, 32px);
}
.studio-shell.studio-client-area { grid-template-columns: minmax(0, 1fr); max-width: 1060px; gap: 16px; }
.studio-workspace { min-width: 0; display: grid; gap: 18px; }
.studio-sidebar, .studio-panel, .studio-stat {
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius);
  min-width: 0; overflow-wrap: anywhere;
}
.studio-sidebar { padding: 19px; align-self: start; }
.studio-sidebar h2 { margin: 6px 0 14px; }
.studio-sidebar-actions { display: grid; gap: 8px; }
.studio-sidebar-note { font-size: .89rem; color: var(--muted); line-height: 1.5; }
.studio-sidebar > .studio-sidebar-note { margin-top: 16px; padding-top: 12px; border-top: 1px solid var(--line); }
.studio-plan-list { display: grid; gap: 5px; list-style: none; padding: 0; margin-top: 16px; }
.studio-plan-list button { width: 100%; text-align: left; justify-content: start; }
.studio-plan-list button[aria-current="true"] { background: #e3f0e9; border-color: #98bcaa; }
.studio-plan-list small { display: block; font-size: .78rem; color: var(--muted); font-weight: 500; }
.studio-hero { display: grid; gap: 15px; align-items: start; }
.studio-hero h1 { margin: 5px 0 8px; }
.studio-hero p:not(.studio-kicker), .studio-volume > p { color: var(--muted); }
.studio-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; }
.studio-button {
  display: inline-block; min-height: 42px; min-width: 0; padding: 8px 14px;
  border: 1px solid #abc4b9; border-radius: 9px; background: #e4f1ea; color: #194d3e;
  font: inherit; font-size: .92rem; font-weight: 700; cursor: pointer;
}
.studio-button:hover:not(:disabled) { background: #d2e8dc; }
.studio-button.primary { background: var(--green); color: #fff; border-color: var(--green); }
.studio-button.primary:hover:not(:disabled) { background: var(--green-dark); }
.studio-button.quiet { background: transparent; }
.studio-button.danger { color: #862e2e; background: transparent; border-color: #d9b8b7; }
.studio-button.danger:hover:not(:disabled) { background: #faebea; }
.studio-button:disabled { opacity: .52; cursor: default; }
.studio-nav .studio-button { color: #fff; background: transparent; border-color: #8ca6a2; }
.studio-nav .studio-button:hover:not(:disabled) { background: #28545d; }
.studio-nav .studio-button[aria-current="page"] { background: #c6e9d3; color: #173e34; border-color: #c6e9d3; }
.studio-status:empty { display: none; }
.studio-status { border-radius: 9px; padding: 9px 13px; background: #e6eeeb; color: var(--ink); }
.studio-status[data-kind="success"] { background: #e1f1e6; color: #15553d; }
.studio-status[data-kind="error"] { background: #fbe9e8; color: #852829; }
.studio-metrics { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
.studio-stat { display: grid; padding: 12px 15px; align-content: start; }
.studio-stat span { font-size: .78rem; font-weight: 700; color: var(--green); }
.studio-stat strong { font-size: clamp(1.5rem, 3vw, 2.05rem); line-height: 1.2; font-variant-numeric: tabular-nums; }
.studio-stat small { font-size: .77rem; color: var(--muted); }
.studio-panel { padding: clamp(14px, 2.2vw, 24px); }
.studio-panel > h2, .studio-panel > h3 { margin-bottom: 12px; }
#plan-form, #sessions { display: grid; gap: 14px; }
.studio-form-grid, .studio-exercise-grid {
  display: grid; grid-template-columns: minmax(0, 2fr) minmax(0, 1fr); gap: 12px;
}
.studio-exercise-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.studio-span-all { grid-column: 1 / -1; }
.studio-exercise-name { grid-column: span 2; }
label { min-width: 0; display: grid; align-content: start; gap: 5px; color: var(--ink); font-size: .88rem; font-weight: 650; }
input, select, textarea {
  width: 100%; min-width: 0; min-height: 43px; padding: 9px 11px;
  border: 1px solid #aebfb7; border-radius: 9px; background: #fff; color: var(--ink);
  font: inherit; font-weight: 450;
}
textarea { resize: vertical; }
input::placeholder, textarea::placeholder { color: #5f6f6d; }
.studio-session-header, .studio-exercise-head {
  display: flex; justify-content: space-between; align-items: end; gap: 10px; flex-wrap: wrap; margin-bottom: 12px;
}
.studio-session-title { flex: 1 1 190px; }
.studio-exercise-head { align-items: center; }
.studio-exercise-head strong { font-size: .86rem; color: var(--green); }
.studio-exercises { display: grid; gap: 10px; }
.studio-exercise, #studio-client-log fieldset {
  min-width: 0; padding: 13px; border: 1px solid var(--line);
  border-radius: 12px; background: #f7faf8;
}
.studio-exercises + .studio-add { margin-top: 12px; }
.studio-volume ul { display: grid; gap: 7px; list-style: none; margin-top: 12px; padding: 0; }
.studio-volume li { display: flex; align-items: center; justify-content: space-between; gap: 12px; background: #f1f6f3; border-radius: 8px; padding: 7px 10px; }
.studio-volume li strong { color: var(--green); }
.studio-client-area .studio-panel > * + * { margin-top: 10px; }
#studio-client-log { display: grid; gap: 12px; }
#studio-client-log legend { font-weight: 700; }
#studio-client-log fieldset p { color: var(--muted); margin-bottom: 9px; }
#studio-client-history summary { cursor: pointer; font-weight: 700; }
#studio-client-history details ul { padding-left: 20px; margin-top: 10px; }
.studio-print { display: none; }

@media (max-width: 850px) {
  .studio-shell { grid-template-columns: minmax(0, 1fr); }
  .studio-sidebar { order: 1; }
}
@media (max-width: 540px) {
  .studio-header-inner { align-items: start; flex-direction: column; }
  .studio-stat { padding: 10px; }
  .studio-metrics { gap: 6px; }
  .studio-form-grid, .studio-exercise-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .studio-details .studio-form-grid > label:first-child,
  .studio-client-area .studio-form-grid > label { grid-column: 1 / -1; }
  .studio-exercise-head .studio-button { padding-inline: 10px; }
}

@page { size: A4; margin: 15mm; }
@media print {
  body { background: #fff; color: #172c2a; font-size: 10pt; }
  .studio-header, .studio-shell { display: none !important; }
  .studio-print { display: block; overflow-wrap: anywhere; }
  .studio-print-header { border-bottom: 2pt solid #275c4d; padding-bottom: 7mm; margin-bottom: 5mm; }
  .studio-print-header h1 { margin: 2mm 0; font-size: 23pt; }
  .studio-print-notes { white-space: pre-wrap; margin-bottom: 6mm; }
  .studio-print-session { margin-bottom: 6mm; }
  .studio-print-session h2 { font-size: 14pt; break-after: avoid; margin-bottom: 2mm; }
  .studio-print table { width: 100%; border-collapse: collapse; table-layout: fixed; }
  .studio-print thead { display: table-header-group; }
  .studio-print tr { break-inside: avoid; }
  .studio-print th, .studio-print td { padding: 1.7mm; border: .5pt solid #a4b9b0; text-align: left; vertical-align: top; white-space: pre-wrap; }
  .studio-print th { background: #e5eeea; font-size: 8.5pt; }
  .studio-print th:first-child { width: 23%; }
  .studio-print th:nth-child(2) { width: 13%; }
  .studio-print th:nth-child(3) { width: 8%; }
  .studio-print th:nth-child(6) { width: 9%; }
  .studio-print th:last-child { width: 22%; }
}