:root {
  --group-paper: #fffdf7;
  --group-ink: #193d38;
  --group-deep: #103e37;
  --group-leaf: #356e57;
  --group-mist: #edf5df;
  --group-sun: #f8c63f;
  --group-coral: #c9503f;
}

.group-page { margin: 0; background-color: var(--cream); color: var(--group-ink); }
.group-hero { padding: 74px 24px 62px; text-align: left; }
.group-hero .back-btn { position: absolute; top: 20px; left: 20px; padding: 8px 14px; text-decoration: none; }
.group-hero__inner { display: grid; width: min(1080px, 100%); margin: 0 auto; grid-template-columns: auto minmax(0, 1fr) auto; gap: 20px; align-items: center; }
.group-hero__icon { display: grid; place-items: center; width: 70px; height: 70px; border: 1px solid rgba(255, 228, 154, .65); border-radius: 21px; background: rgba(255, 253, 247, .14); font-size: 2.2rem; box-shadow: 0 12px 24px rgba(4, 34, 27, .2); }
.group-eyebrow { margin: 0; color: var(--group-leaf); font-size: .72rem; font-weight: 900; letter-spacing: .12em; text-transform: uppercase; }
.group-hero .group-eyebrow { color: #ffe49a; }
.group-hero h1 { margin: 3px 0 5px; font-size: clamp(2.35rem, 5vw, 4.15rem); font-weight: 400; line-height: 1; }
.group-hero__inner > div:nth-child(2) > p:last-child { max-width: 650px; margin: 0; font-size: 1rem; }
.group-hero__chips { display: flex; max-width: 265px; flex-wrap: wrap; justify-content: flex-end; gap: 7px; }
.group-hero__chips span { padding: 6px 10px; border: 1px solid rgba(255, 253, 247, .28); border-radius: 999px; background: rgba(255, 253, 247, .1); color: #fffdf7; font-size: .72rem; font-weight: 800; white-space: nowrap; }

.group-workspace { width: min(1100px, calc(100% - 32px)); margin: -28px auto 62px; position: relative; z-index: 2; }
.group-builder, .group-results { overflow: hidden; border: 1px solid #ded7c5; border-radius: 24px; background: var(--group-paper); box-shadow: 0 18px 42px rgba(24, 66, 55, .14); }
.group-builder::before, .group-results::before { display: block; width: 100%; height: 7px; content: ''; background: linear-gradient(90deg, var(--group-sun), #f3dc81 46%, #6f9e72); }
.group-builder__header { display: flex; align-items: center; gap: 15px; padding: 23px 27px 20px; border-bottom: 1px solid #e8e1cf; background: linear-gradient(110deg, #fffdf7, #f5f9ec); }
.group-step-icon { display: grid; flex: 0 0 auto; place-items: center; width: 42px; height: 42px; border: 1px solid #eacb6b; border-radius: 13px; background: #fff0b8; color: var(--group-deep); font-size: .95rem; font-weight: 900; box-shadow: 0 6px 13px rgba(104, 79, 15, .1); }
.group-step-icon--leaf { border-color: #c7d9bc; background: var(--group-mist); color: var(--group-leaf); }
.group-builder__header h2, .group-results h2 { margin: 1px 0 0; color: var(--group-deep); font-family: 'DM Serif Display', 'Noto Sans SC', serif; font-size: clamp(1.55rem, 3vw, 2rem); font-weight: 400; line-height: 1.1; }
.group-builder__header p:last-child, .group-results__heading p:last-child { margin: 5px 0 0; color: var(--muted); font-size: .85rem; }
.group-count { flex: 0 0 auto; margin-left: auto; padding: 7px 11px; border: 1px solid #d1dfc8; border-radius: 999px; background: var(--group-mist); color: var(--group-leaf); font-size: .78rem; font-weight: 900; white-space: nowrap; }
.group-count.has-students { border-color: #efd57f; background: #fff4ca; color: #845d0c; }

.group-builder__body { display: grid; grid-template-columns: minmax(0, 1fr) 360px; }
.group-name-panel, .group-settings { padding: 26px 27px 29px; }
.group-settings { border-left: 1px solid #e6dfcd; background: #f6faef; }
.group-section-title { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; margin-bottom: 14px; }
.group-section-title h3 { margin: 1px 0 0; color: var(--group-deep); font-family: 'DM Serif Display', 'Noto Sans SC', serif; font-size: 1.45rem; font-weight: 400; line-height: 1.12; }
.group-section-title > span { font-size: 1.25rem; }
#names { display: block; width: 100%; min-height: 300px; padding: 16px 17px; resize: vertical; border: 1px solid #cbd8c2; border-radius: 16px; background: #fffef9; color: var(--group-ink); font: 650 .95rem/1.65 'Nunito', 'Noto Sans SC', sans-serif; outline: none; transition: border-color .16s ease, box-shadow .16s ease; }
#names::placeholder { color: #9aa69e; font-weight: 600; }
#names:focus { border-color: #6e9a70; box-shadow: 0 0 0 4px rgba(53, 110, 87, .13); }
.group-input-footer { display: flex; align-items: center; justify-content: space-between; gap: 14px; margin-top: 9px; }
.group-input-footer p { margin: 0; color: var(--muted); font-size: .76rem; }
.group-input-footer > div { display: flex; gap: 4px; }
.group-text-button { padding: 5px 7px; border: 0; background: transparent; color: var(--group-leaf); cursor: pointer; font: inherit; font-size: .76rem; font-weight: 900; text-decoration: underline; text-underline-offset: 3px; }
.group-text-button:hover { color: var(--group-deep); }
.group-text-button--muted { color: #7b8982; }

.group-mode-options { display: grid; gap: 10px; margin: 0; padding: 0; border: 0; }
.group-mode-card { display: grid; gap: 7px; padding: 13px 14px; border: 1px solid #d1dfc9; border-radius: 15px; background: #fffdf7; cursor: pointer; transition: border-color .15s ease, box-shadow .15s ease, background-color .15s ease; }
.group-mode-card:hover { border-color: #91b087; }
.group-mode-card.is-selected { border-color: #e9be3f; background: #fff8dc; box-shadow: 0 0 0 3px rgba(248, 198, 63, .16); }
.group-mode-card__top { display: flex; align-items: center; gap: 8px; color: var(--group-deep); font-size: .88rem; }
.group-mode-card__top input { width: 16px; height: 16px; margin: 0; accent-color: var(--group-leaf); }
.group-mode-card__hint { color: var(--muted); font-size: .74rem; }
.group-number-field { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: 2px; color: var(--group-leaf); font-size: .75rem; font-weight: 900; }
.group-number-field input { width: 78px; min-height: 38px; margin: 0; padding: 7px 9px; border: 1px solid #c9d7c1; border-radius: 10px; background: #fff; color: var(--group-deep); font: inherit; font-size: .9rem; font-weight: 900; text-align: center; outline: none; }
.group-number-field input:focus { border-color: var(--group-leaf); box-shadow: 0 0 0 3px rgba(53, 110, 87, .13); }
.group-number-field input:disabled { background: #edf1e9; color: #95a098; cursor: not-allowed; }
.group-plan { display: flex; align-items: flex-start; gap: 8px; min-height: 54px; margin-top: 13px; padding: 10px 12px; border: 1px dashed #bdd0b2; border-radius: 12px; background: #fffef9; color: var(--group-leaf); }
.group-plan p { margin: 0; color: var(--muted); font-size: .77rem; line-height: 1.45; }
.group-primary-button { width: 100%; min-height: 48px; margin-top: 13px; padding: 10px 16px; border: 0; border-radius: 14px; background: var(--group-coral); box-shadow: 0 5px 0 #9d392f; color: white; cursor: pointer; font: inherit; font-size: .9rem; font-weight: 900; transition: transform .15s ease, box-shadow .15s ease, background-color .15s ease; }
@media (hover: hover) and (pointer: fine) {
  .group-primary-button:hover { transform: translateY(-2px); background: #d75d49; box-shadow: 0 7px 0 #9d392f; }
}
.group-primary-button:active { transform: translateY(3px); box-shadow: 0 2px 0 #9d392f; }
.group-primary-button:focus-visible, .group-secondary-button:focus-visible, .group-text-button:focus-visible { outline: 3px solid rgba(248, 198, 63, .5); outline-offset: 3px; }
.group-status { min-height: 20px; margin: 10px 2px 0; color: #a14538; font-size: .77rem; font-weight: 800; text-align: center; }
.group-status.is-success { color: #2f6b51; }

.group-results { margin-top: 22px; }
.group-results::before { background: linear-gradient(90deg, #6f9e72, #b8d49a, #f8c63f); }
.group-results__header { display: flex; align-items: center; justify-content: space-between; gap: 18px; padding: 22px 27px; border-bottom: 1px solid #e8e1cf; background: #fffaf0; }
.group-results__heading { display: flex; align-items: center; gap: 14px; }
.group-results__actions { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 8px; }
.group-secondary-button { min-height: 39px; padding: 8px 12px; border: 1px solid #c9d9c0; border-radius: 11px; background: #fffdf7; color: var(--group-deep); cursor: pointer; font: inherit; font-size: .77rem; font-weight: 900; transition: transform .15s ease, background-color .15s ease; }
@media (hover: hover) and (pointer: fine) {
  .group-secondary-button:hover:not(:disabled) { transform: translateY(-2px); background: var(--group-mist); }
}
.group-secondary-button:disabled { cursor: not-allowed; opacity: .42; }
.group-output { min-height: 200px; padding: 25px 27px 29px; }
.group-empty-state { display: grid; min-height: 150px; place-items: center; align-content: center; color: var(--muted); text-align: center; }
.group-empty-state > span { font-size: 2rem; filter: grayscale(.25); }
.group-empty-state strong { margin-top: 5px; color: var(--group-deep); }
.group-empty-state p { max-width: 390px; margin: 2px 0 0; font-size: .82rem; }
.group-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(215px, 1fr)); gap: 14px; }
.group-card { overflow: hidden; border: 1px solid #d9e3d1; border-radius: 16px; background: #fffef9; box-shadow: 0 7px 17px rgba(24, 66, 55, .07); }
.group-card::before { display: block; height: 5px; content: ''; background: var(--group-accent, #6f9e72); }
.group-card__header { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 13px 15px 9px; }
.group-card__header h3 { margin: 0; color: var(--group-deep); font-family: 'DM Serif Display', 'Noto Sans SC', serif; font-size: 1.18rem; font-weight: 400; }
.group-card__header span { padding: 4px 8px; border-radius: 999px; background: #edf5df; color: var(--group-leaf); font-size: .68rem; font-weight: 900; }
.group-card ol { display: grid; gap: 7px; margin: 0; padding: 0 15px 15px; list-style: none; }
.group-card li { display: flex; align-items: center; gap: 9px; padding: 7px 9px; border-radius: 10px; background: #f6f9f1; color: #31584d; font-size: .84rem; font-weight: 800; }
.group-card li span { display: grid; flex: 0 0 auto; place-items: center; width: 25px; height: 25px; border-radius: 50%; background: var(--group-accent, #6f9e72); color: white; font-size: .64rem; font-weight: 900; }

.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }

@media (max-width: 820px) {
  .group-hero { padding-top: 80px; }
  .group-hero__inner { grid-template-columns: auto minmax(0, 1fr); }
  .group-hero__chips { grid-column: 1 / -1; max-width: none; justify-content: flex-start; }
  .group-builder__body { grid-template-columns: 1fr; }
  .group-settings { border-top: 1px solid #e6dfcd; border-left: 0; }
  #names { min-height: 230px; }
}

@media (max-width: 560px) {
  .group-hero { padding: 82px 17px 52px; }
  .group-hero__inner { grid-template-columns: 1fr; gap: 13px; }
  .group-hero__icon { width: 56px; height: 56px; border-radius: 17px; font-size: 1.75rem; }
  .group-hero__chips { grid-column: auto; }
  .group-workspace { width: min(100% - 20px, 1100px); margin-top: -20px; }
  .group-builder__header, .group-results__header { align-items: flex-start; padding: 19px 18px; }
  .group-builder__header { flex-wrap: wrap; }
  .group-count { margin-left: 57px; }
  .group-name-panel, .group-settings, .group-output { padding: 20px 18px 23px; }
  .group-input-footer, .group-results__header { flex-direction: column; }
  .group-input-footer { align-items: flex-start; }
  .group-results__actions { width: 100%; justify-content: flex-start; }
  .group-secondary-button { flex: 1; }
  .group-grid { grid-template-columns: 1fr; }
}