/* ชุดข้อสอบไวยากรณ์ ป.๑-๒ — /exam-bank/sets และ /exam-bank/set/{id}
   ใช้ตัวแปรสีจาก shell.css (--eb-*) · สีประจำหมวดส่งมาทาง --c */

.es-loading { text-align: center; padding: 5rem 1rem; color: var(--eb-ink-soft); }
.es-loading i { font-size: 2rem; color: var(--eb-primary); }
.es-error { background: #fef2f2; border: 1px solid #fecaca; color: #b91c1c; padding: 1rem 1.2rem; border-radius: 14px; font-weight: 600; }

/* ── หน้ารวมชุด ── */
.es-hero {
	background: linear-gradient(135deg, #312e81 0%, #4f46e5 55%, #6366f1 100%);
	color: #fff; border-radius: 22px; padding: 2rem 1.6rem 1.7rem; margin-bottom: 1.4rem;
}
.es-eyebrow { display: inline-flex; align-items: center; gap: .45rem; font-size: .8rem; font-weight: 700;
	background: rgba(255,255,255,.16); padding: .3rem .8rem; border-radius: 999px; }
.es-hero h1 { margin: .7rem 0 .35rem; font-size: clamp(1.6rem, 5vw, 2.3rem); font-weight: 800; letter-spacing: -.01em; }
.es-hero-em { color: var(--eb-gold); }
.es-hero p { margin: 0; font-size: .95rem; opacity: .9; line-height: 1.7; max-width: 46rem; }
.es-hero-stats { display: flex; flex-wrap: wrap; gap: .6rem; margin-top: 1.2rem; }
.es-hero-stats div { background: rgba(255,255,255,.13); border-radius: 13px; padding: .55rem .95rem; min-width: 5.4rem; }
.es-hero-stats b { display: block; font-size: 1.35rem; font-weight: 800; line-height: 1.15; }
.es-hero-stats span { font-size: .74rem; opacity: .85; }

.es-modebar { display: flex; flex-wrap: wrap; align-items: center; gap: .45rem; margin-bottom: 1.6rem; }
.es-mode {
	font: inherit; font-size: .84rem; font-weight: 700; cursor: pointer;
	background: #fff; border: 1px solid var(--eb-line); color: var(--eb-ink-soft);
	padding: .45rem .9rem; border-radius: 999px; display: inline-flex; align-items: center; gap: .4rem;
}
.es-mode.on { background: var(--eb-primary); border-color: var(--eb-primary); color: #fff; }
.es-mode-hint { flex: 1 1 100%; font-size: .78rem; color: var(--eb-ink-soft); padding-left: .2rem; }

.es-topic { margin-bottom: 1.9rem; }
.es-topic-head { display: flex; align-items: baseline; gap: .6rem; flex-wrap: wrap; margin: 0 0 .7rem;
	font-size: 1.05rem; font-weight: 800; color: var(--eb-ink); border-left: 5px solid var(--c); padding-left: .7rem; }
.es-topic-no { font-size: .74rem; font-weight: 800; color: #fff; background: var(--c); padding: .17rem .55rem; border-radius: 999px; }
.es-topic-head small { font-weight: 600; font-size: .78rem; color: var(--eb-ink-soft); }

.es-set-grid { display: grid; gap: .6rem; grid-template-columns: repeat(auto-fill, minmax(158px, 1fr)); }
.es-set-card {
	display: flex; align-items: center; gap: .6rem; text-decoration: none;
	background: #fff; border: 1px solid var(--eb-line); border-radius: 14px; padding: .65rem .8rem;
	color: var(--eb-ink); transition: transform .12s, box-shadow .12s, border-color .12s;
}
.es-set-card:hover { transform: translateY(-2px); border-color: var(--c); box-shadow: 0 6px 16px rgba(15,23,42,.09); }
.es-set-card.done { background: #f0fdf4; border-color: #bbf7d0; }
.es-set-no { flex: none; width: 2.1rem; height: 2.1rem; display: grid; place-items: center; border-radius: 10px;
	background: color-mix(in srgb, var(--c) 14%, #fff); color: var(--c); font-weight: 800; font-size: 1.05rem; }
.es-set-meta { flex: 1; min-width: 0; display: flex; flex-direction: column; line-height: 1.3; }
.es-set-meta b { font-size: .86rem; font-weight: 700; }
.es-set-meta small { font-size: .7rem; color: var(--eb-ink-soft); }
.es-set-score { font-size: .74rem; font-weight: 800; color: var(--eb-emerald); white-space: nowrap; }
.es-set-go { color: #cbd5e1; }

.es-foot-note { text-align: center; font-size: .85rem; color: var(--eb-ink-soft); margin-top: 2.2rem; }

/* ── หน้าทำชุด ── */
.es-paper-shell { max-width: 780px; }
.es-paper-head { border-bottom: 3px solid var(--c); padding-bottom: .9rem; margin-bottom: 1.1rem; }
.es-back { font-size: .82rem; font-weight: 700; color: var(--eb-ink-soft); text-decoration: none; display: inline-flex; gap: .35rem; align-items: center; }
.es-back:hover { color: var(--eb-primary); }
.es-paper-title { margin-top: .5rem; }
.es-paper-kicker { font-size: .76rem; font-weight: 700; color: var(--c); letter-spacing: .01em; }
.es-paper-head h1 { margin: .2rem 0 .15rem; font-size: clamp(1.35rem, 4.5vw, 1.8rem); font-weight: 800; color: var(--eb-ink); }
.es-paper-sub { font-size: .82rem; color: var(--eb-ink-soft); }
.es-paper-actions { display: flex; gap: .45rem; margin-top: .8rem; flex-wrap: wrap; }

.es-btn { font: inherit; font-size: .84rem; font-weight: 700; cursor: pointer; border-radius: 999px;
	padding: .45rem 1rem; border: 1px solid transparent; display: inline-flex; align-items: center; gap: .4rem; text-decoration: none; }
.es-btn-ghost { background: #fff; border-color: var(--eb-line); color: var(--eb-ink-soft); }
.es-btn-ghost:hover { border-color: var(--eb-primary); color: var(--eb-primary); }
.es-btn-pdf { background: #b91c1c; color: #fff; }
.es-btn-pdf:disabled { opacity: .6; cursor: default; }
.es-btn-reveal { background: var(--eb-primary-wash); border-color: #c7d2fe; color: var(--eb-primary-dim); }
.es-btn-next { background: var(--eb-primary); color: #fff; }

.es-opts, .es-modal-card .es-opt { display: grid; gap: .8rem; }
.es-opts { background: #fff; border: 1px solid var(--eb-line); border-radius: 16px; padding: 1rem 1.1rem; margin-bottom: 1.2rem; }
.es-opt label { display: block; font-size: .78rem; font-weight: 700; color: var(--eb-ink-soft); margin-bottom: .35rem; }
.es-opt + .es-opt { margin-top: .8rem; }
.es-seg { display: inline-flex; flex-wrap: wrap; gap: .3rem; }
.es-seg-b { font: inherit; font-size: .8rem; font-weight: 700; cursor: pointer; background: var(--eb-surface-2);
	border: 1px solid var(--eb-line); color: var(--eb-ink-soft); padding: .35rem .8rem; border-radius: 9px; }
.es-seg-b.on { background: var(--eb-primary); border-color: var(--eb-primary); color: #fff; }

.es-questions { list-style: none; margin: 0; padding: 0; display: grid; gap: 1.1rem; }
.es-q { background: #fff; border: 1px solid var(--eb-line); border-radius: 16px; padding: 1rem 1.1rem 1.1rem; }
.es-q-head { display: flex; align-items: center; gap: .6rem; margin-bottom: .5rem; }
.es-q-no { width: 1.9rem; height: 1.9rem; flex: none; display: grid; place-items: center; border-radius: 9px;
	background: var(--eb-primary); color: #fff; font-weight: 800; font-size: .95rem; }
.es-q-tags { display: flex; flex-wrap: wrap; gap: .3rem; margin-left: auto; }
.es-tag { font-size: .7rem; font-weight: 700; padding: .16rem .55rem; border-radius: 999px; }
.es-tag-year { background: var(--eb-surface-2); color: var(--eb-ink-soft); }
.es-tag-freq { background: #fff7ed; color: #c2410c; border: 1px solid #fed7aa; }
.es-q-context { margin: 0 0 .35rem; font-size: .84rem; color: var(--eb-ink-soft); font-style: italic; }
.es-q-text { margin: 0 0 .8rem; font-size: 1.02rem; line-height: 1.85; color: var(--eb-ink); font-weight: 600; white-space: pre-wrap; }

.es-ruled { display: grid; gap: 0; margin-bottom: .8rem; }
.es-rule { display: block; height: 2.05rem; border-bottom: 1px solid #dde3ec; }
.es-vibhatti { width: 100%; border-collapse: collapse; margin-bottom: .9rem; font-size: .9rem; }
.es-vibhatti th, .es-vibhatti td { border: 1px solid #cbd5e1; padding: .45rem .5rem; }
.es-vibhatti thead th { background: var(--eb-surface-2); font-size: .78rem; color: var(--eb-ink-soft); }
.es-vibhatti tbody th { width: 3.4rem; background: var(--eb-surface); font-weight: 700; color: var(--eb-ink-soft); text-align: center; }
.es-vibhatti tbody td { height: 2rem; }

.es-q-foot { display: flex; flex-wrap: wrap; align-items: center; gap: .6rem; }
.es-rate { display: flex; flex-wrap: wrap; align-items: center; gap: .3rem; font-size: .78rem; color: var(--eb-ink-soft); font-weight: 600; }
.es-rate-b { font: inherit; font-size: .78rem; font-weight: 700; cursor: pointer; border-radius: 999px;
	padding: .28rem .75rem; border: 1px solid var(--eb-line); background: #fff; color: var(--eb-ink-soft); }
.es-rate-good.on { background: var(--eb-emerald); border-color: var(--eb-emerald); color: #fff; }
.es-rate-ok.on { background: var(--eb-gold); border-color: var(--eb-gold); color: #7c2d12; }
.es-rate-bad.on { background: #ef4444; border-color: #ef4444; color: #fff; }

.es-answer {
	margin: .8rem 0 0; padding: .85rem 1rem; border-radius: 12px;
	background: #f0fdf4; border: 1px solid #bbf7d0; color: #14532d;
	font: inherit; font-size: .97rem; line-height: 1.85; white-space: pre-wrap; overflow-x: auto;
}

.es-summary { margin-top: 1.6rem; background: #fff; border: 1px solid var(--eb-line); border-radius: 18px; padding: 1.2rem; }
.es-summary h3 { margin: 0 0 .8rem; font-size: 1.05rem; font-weight: 800; color: var(--eb-ink); }
.es-summary-bars { display: flex; gap: .55rem; flex-wrap: wrap; }
.es-summary-bars > div { flex: 1 1 5.5rem; border-radius: 13px; padding: .65rem .8rem; text-align: center; }
.es-summary-bars b { display: block; font-size: 1.5rem; font-weight: 800; line-height: 1.15; }
.es-summary-bars span { font-size: .76rem; }
.es-sum-good { background: var(--eb-emerald-soft); color: #065f46; }
.es-sum-ok { background: #fef3c7; color: #92400e; }
.es-sum-bad { background: #fee2e2; color: #991b1b; }
.es-summary-note { font-size: .82rem; color: var(--eb-ink-soft); margin: .8rem 0 0; }
.es-summary-actions { display: flex; gap: .45rem; flex-wrap: wrap; margin-top: .9rem; }
.es-save-state { font-size: .78rem; color: var(--eb-emerald); margin: .7rem 0 0; font-weight: 700; }

/* ── Modal ── */
.es-modal { position: fixed; inset: 0; z-index: 60; background: rgba(15,23,42,.55);
	display: flex; align-items: center; justify-content: center; padding: 1rem; }
.es-modal-card { background: #fff; border-radius: 20px; padding: 1.4rem; width: min(560px, 100%);
	max-height: 88vh; overflow-y: auto; }
.es-modal-card h3 { margin: 0 0 1.1rem; font-size: 1.15rem; font-weight: 800; color: var(--eb-ink); display: flex; gap: .5rem; align-items: center; }
.es-modal-card h3 i { color: #b91c1c; }
.es-modal-note { font-size: .8rem; color: var(--eb-ink-soft); background: var(--eb-primary-wash);
	border-radius: 11px; padding: .6rem .8rem; margin: 1.1rem 0 0; line-height: 1.7; }
.es-modal-actions { display: flex; justify-content: flex-end; gap: .45rem; margin-top: 1.1rem; }

@media (min-width: 640px) {
	.es-paper-head { display: grid; grid-template-columns: 1fr auto; grid-template-areas: 'back back' 'title actions'; align-items: end; }
	.es-back { grid-area: back; }
	.es-paper-title { grid-area: title; }
	.es-paper-actions { grid-area: actions; margin-top: 0; }
	.es-opts { grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); }
	.es-opt + .es-opt { margin-top: 0; }
}