:root {
  --bg: #080a0c;
  --panel: #10151a;
  --panel-alt: #151c22;
  --line: #29343d;
  --text: #edf2f4;
  --muted: #9baab4;
  --soft: #687984;
  --accent: #7c5cfc;
  --teal: #4ecdc4;
  --warn: #ffd166;
  --danger: #ff7c7c;
  --radius: 12px;
}

* { box-sizing: border-box; }
html { min-width: 320px; background: var(--bg); }
body { margin: 0; color: var(--text); background: var(--bg); font: 15px/1.65 "Noto Sans SC", Inter, system-ui, sans-serif; }
a { color: inherit; }

.topbar { height: 60px; padding: 0 28px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--line); background: rgba(8, 10, 12, .92); }
.brand { font-size: 16px; font-weight: 800; text-decoration: none; letter-spacing: .4px; }
.brand span { color: var(--accent); margin-left: 6px; }
.back-link, .footer a { color: var(--muted); font-size: 13px; text-decoration: none; }
.back-link:hover, .footer a:hover { color: var(--text); }

.page-shell { width: min(1180px, calc(100% - 40px)); margin: 0 auto; padding: 64px 0 80px; }
.intro { max-width: 760px; margin-bottom: 34px; }
.eyebrow, .section-kicker { margin: 0 0 8px; color: var(--accent); font-size: 11px; font-weight: 800; letter-spacing: 2.4px; }
.intro h1 { margin: 0 0 12px; font-size: clamp(30px, 5vw, 54px); line-height: 1.17; letter-spacing: 0; }
.intro-copy { margin: 0; color: var(--muted); max-width: 690px; }

.workspace { display: grid; grid-template-columns: minmax(310px, 420px) minmax(0, 1fr); gap: 24px; align-items: start; }
.planner-form, .results { border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); }
.planner-form { padding: 24px; position: sticky; top: 18px; }
.form-heading, .results-heading { display: flex; justify-content: space-between; align-items: flex-start; gap: 14px; margin-bottom: 22px; }
.form-heading h2, .results-heading h2 { margin: 0; font-size: 20px; line-height: 1.3; }
.required-note, .memory-note { color: var(--soft); font-size: 11px; white-space: nowrap; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.field { display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.field-wide { grid-column: 1 / -1; }
.field span { color: var(--muted); font-size: 12px; font-weight: 600; }
.field input, .field select, .field textarea { width: 100%; border: 1px solid var(--line); border-radius: 8px; color: var(--text); background: var(--panel-alt); padding: 10px 11px; font: inherit; font-size: 14px; outline: none; }
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(124, 92, 252, .13); }
.field select option { color: var(--text); background: var(--panel-alt); }
.field textarea { min-height: 86px; resize: vertical; }
.form-message { min-height: 22px; margin-top: 14px; color: var(--danger); font-size: 12px; }
.form-actions { display: flex; gap: 10px; margin-top: 4px; }
.primary-button, .secondary-button { min-height: 44px; border-radius: 8px; padding: 10px 16px; border: 1px solid transparent; font: inherit; font-weight: 700; cursor: pointer; }
.primary-button { flex: 1; color: #fff; background: var(--accent); }
.primary-button:hover { background: #9279ff; }
.secondary-button { color: var(--muted); background: transparent; border-color: var(--line); }
.secondary-button:hover { color: var(--text); border-color: var(--soft); }

.results { padding: 24px; min-height: 420px; }
.results[hidden] { display: none; }
.result-summary { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 8px; margin-bottom: 22px; }
.summary-item { padding: 12px; border: 1px solid var(--line); border-radius: 8px; background: var(--panel-alt); }
.summary-item .label { display: block; color: var(--soft); font-size: 11px; }
.summary-item strong { display: block; margin-top: 2px; font-size: 15px; }
.result-block { margin-top: 22px; }
.result-block h3 { margin: 0 0 12px; font-size: 16px; }
.result-block .block-note { color: var(--muted); font-size: 12px; margin: -4px 0 12px; }
.training-day { border: 1px solid var(--line); border-radius: 9px; overflow: hidden; margin-bottom: 10px; }
.training-day summary { cursor: pointer; padding: 12px 14px; background: var(--panel-alt); font-weight: 700; }
.training-day summary::marker { color: var(--accent); }
.training-day-body { padding: 8px 14px 12px; overflow-x: auto; }
.exercise-table { width: 100%; min-width: 520px; border-collapse: collapse; font-size: 12px; }
.exercise-table th { color: var(--soft); text-align: left; font-weight: 600; padding: 7px 5px; border-bottom: 1px solid var(--line); }
.exercise-table td { padding: 8px 5px; border-bottom: 1px solid rgba(41, 52, 61, .65); vertical-align: top; }
.exercise-table tr:last-child td { border-bottom: 0; }
.exercise-table .exercise-name { font-weight: 700; }
.exercise-table .exercise-target { color: var(--muted); }
.warning-list { margin: 10px 0 0; padding: 10px 14px 10px 30px; border: 1px solid rgba(255, 209, 102, .28); border-radius: 8px; color: var(--warn); background: rgba(255, 209, 102, .06); font-size: 12px; }
.diet-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 8px; }
.diet-card { padding: 12px; border: 1px solid var(--line); border-radius: 8px; background: var(--panel-alt); }
.diet-card .diet-label { color: var(--soft); font-size: 11px; }
.diet-card strong { display: block; margin-top: 2px; font-size: 18px; }
.macro-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.macro-card { padding: 12px; border-radius: 8px; background: var(--panel-alt); border: 1px solid var(--line); }
.macro-card strong { display: block; margin-top: 4px; font-size: 19px; }
.macro-card span { color: var(--soft); font-size: 11px; }
.diet-note { margin: 12px 0 0; padding: 12px 14px; border-left: 3px solid var(--teal); color: var(--muted); background: rgba(78, 205, 196, .06); font-size: 12px; }
.diet-actions { display: flex; justify-content: flex-end; margin-top: 14px; }
.diet-open-button { min-height: 38px; padding: 8px 14px; border: 1px solid rgba(124, 92, 252, .42); border-radius: 8px; color: #fff; background: rgba(124, 92, 252, .85); font: inherit; font-size: 12px; font-weight: 700; cursor: pointer; }
.diet-open-button:hover { background: #9279ff; }
.sd-modal { position: fixed; inset: 0; z-index: 200; display: grid; place-items: center; padding: 20px; background: rgba(3, 5, 7, .74); backdrop-filter: blur(6px); }
.sd-modal[hidden] { display: none; }
.sd-modal-card { width: min(680px, 100%); max-height: min(86vh, 760px); overflow: auto; padding: 24px; border: 1px solid rgba(124, 92, 252, .32); border-radius: 16px; background: #10151a; box-shadow: 0 24px 80px rgba(0, 0, 0, .42); }
.sd-modal-heading { display: flex; justify-content: space-between; gap: 14px; align-items: flex-start; padding-bottom: 16px; border-bottom: 1px solid var(--line); }
.sd-modal-heading h2 { margin: 0; font-size: 22px; }
.sd-modal-close { width: 36px; height: 36px; border: 1px solid var(--line); border-radius: 50%; color: var(--muted); background: var(--panel-alt); font-size: 22px; line-height: 1; cursor: pointer; }
.sd-modal-close:hover { color: var(--text); border-color: var(--soft); }
.diet-modal-summary { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin: 18px 0 12px; }
.diet-modal-summary > div, .diet-modal-macros > div { padding: 12px; border: 1px solid var(--line); border-radius: 8px; background: var(--panel-alt); }
.diet-modal-summary span, .diet-modal-macros span, .diet-modal-macros small { display: block; color: var(--soft); font-size: 11px; }
.diet-modal-summary strong { display: block; margin-top: 3px; font-size: 17px; }
.diet-modal-callout { display: flex; align-items: center; flex-wrap: wrap; gap: 8px 14px; padding: 12px 14px; border-left: 3px solid var(--teal); color: var(--muted); background: rgba(78, 205, 196, .06); font-size: 12px; }
.diet-modal-callout strong { color: var(--text); }
.diet-modal-macros { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-top: 12px; }
.diet-modal-macros strong { display: block; margin: 2px 0; font-size: 22px; }
.diet-modal-note { margin: 12px 0 0; color: var(--muted); font-size: 12px; line-height: 1.7; }
.sd-modal-open { overflow: hidden; }
.empty-result { color: var(--muted); font-size: 13px; }
.footer { border-top: 1px solid var(--line); padding: 24px 20px 40px; text-align: center; }

@media (max-width: 900px) {
  .workspace { grid-template-columns: 1fr; }
  .planner-form { position: static; }
}
@media (max-width: 620px) {
  .topbar { padding: 0 16px; }
  .page-shell { width: min(100% - 28px, 560px); padding-top: 42px; }
  .planner-form, .results { padding: 18px; }
  .form-grid, .result-summary, .diet-grid { grid-template-columns: 1fr 1fr; }
  .field-wide { grid-column: 1 / -1; }
  .result-summary .summary-item:last-child { grid-column: 1 / -1; }
  .macro-grid { grid-template-columns: 1fr; }
  .diet-modal-summary { grid-template-columns: 1fr 1fr; }
  .diet-modal-macros { grid-template-columns: 1fr; }
  .sd-modal-card { padding: 18px; }
}