/* AI Math Solver — widget styles. BEM, built on the --ms-* design tokens. */

.ms-solver {
	--_pad: clamp(16px, 3vw, 26px);
	background: var(--ms-surface, #fff);
	border: 1px solid var(--ms-border, #E2E8F0);
	border-radius: var(--ms-radius-lg, 22px);
	box-shadow: var(--ms-shadow-lg, 0 18px 48px rgba(79,70,229,.16));
	padding: var(--_pad);
	max-width: 760px;
	margin: 1.4rem auto;
}

/* Tabs */
.ms-solver__tabs { display: inline-flex; background: var(--ms-surface-2, #F8FAFC); border: 1px solid var(--ms-border, #E2E8F0); border-radius: 999px; padding: 4px; gap: 4px; margin-bottom: 1rem; }
.ms-solver__tab {
	border: 0; background: transparent; cursor: pointer; font-family: var(--ms-font-body, inherit);
	font-weight: 600; font-size: .92rem; color: var(--ms-muted, #64748B);
	padding: .5em 1.1em; border-radius: 999px; transition: background-color .15s ease, color .15s ease;
}
.ms-solver__tab.is-active { background: var(--ms-primary, #4F46E5); color: #fff; }

/* Inputs */
.ms-solver__inputs { margin-bottom: .85rem; }
/* MathLive sets its own display, which beats the [hidden] UA rule — force it. */
.ms-solver math-field[hidden], .ms-solver textarea[hidden] { display: none !important; }
.ms-solver__field {
	display: block; width: 100%; min-height: 64px; font-size: 1.4rem;
	border: 1.5px solid var(--ms-border, #E2E8F0); border-radius: var(--ms-radius, 14px);
	padding: .6rem .8rem; background: var(--ms-surface, #fff);
	--smart-fence-color: var(--ms-primary, #4F46E5);
}
.ms-solver__field:focus-within { border-color: var(--ms-primary, #4F46E5); box-shadow: 0 0 0 4px var(--ms-primary-soft, #EEF0FE); outline: none; }
.ms-solver__textarea {
	display: block; width: 100%; font-family: var(--ms-font-body, inherit); font-size: 1.05rem;
	line-height: 1.5; color: var(--ms-ink, #0F172A);
	border: 1.5px solid var(--ms-border, #E2E8F0); border-radius: var(--ms-radius, 14px);
	padding: .8rem 1rem; resize: vertical; min-height: 76px; background: var(--ms-surface, #fff);
}
.ms-solver__textarea:focus { border-color: var(--ms-primary, #4F46E5); box-shadow: 0 0 0 4px var(--ms-primary-soft, #EEF0FE); outline: none; }

/* Example chips */
.ms-solver__chips { display: flex; flex-wrap: wrap; align-items: center; gap: .5rem; margin-bottom: 1rem; }
.ms-solver__chips-label { font-size: .85rem; color: var(--ms-muted, #64748B); font-weight: 600; }
.ms-chip {
	border: 1px solid var(--ms-border, #E2E8F0); background: var(--ms-surface-2, #F8FAFC);
	color: var(--ms-ink, #0F172A); border-radius: 999px; padding: .4em .85em; font-size: .85rem;
	font-family: var(--ms-font-body, inherit); cursor: pointer; transition: border-color .15s, background-color .15s, color .15s;
}
.ms-chip:hover { border-color: var(--ms-primary, #4F46E5); background: var(--ms-primary-soft, #EEF0FE); color: var(--ms-primary-dark, #3730A3); }

/* Actions */
.ms-solver__actions { display: flex; flex-wrap: wrap; gap: .6rem; }
.ms-solver__solve { position: relative; }
.ms-solver__solve.is-loading { color: transparent !important; pointer-events: none; }
.ms-solver__solve.is-loading::after {
	content: ""; position: absolute; width: 18px; height: 18px; top: calc(50% - 9px); left: calc(50% - 9px);
	border: 2px solid rgba(255,255,255,.5); border-top-color: #fff; border-radius: 50%;
	animation: ms-spin .7s linear infinite;
}
@keyframes ms-spin { to { transform: rotate(360deg); } }

/* Status / errors */
.ms-solver__status { margin-top: .9rem; color: var(--ms-muted, #64748B); font-size: .95rem; min-height: 0; }
.ms-solver__error { color: #b32d2e; font-weight: 500; }

/* Result */
.ms-solver__result { margin-top: 1.2rem; padding-top: 1.2rem; border-top: 1px dashed var(--ms-border, #E2E8F0); }
.ms-solver__solution { font-size: 1.02rem; line-height: 1.7; color: var(--ms-ink, #0F172A); }
.ms-solver__solution h3 { font-size: 1.18rem; margin: 1.2rem 0 .5rem; }
.ms-solver__solution h4 { font-size: 1.04rem; margin: 1rem 0 .4rem; }
.ms-solver__solution ol, .ms-solver__solution ul { padding-left: 1.3rem; }
.ms-solver__solution li { margin: .3rem 0; }
.ms-solver__solution .katex-display { margin: .6rem 0; }
.ms-solver__eq { font-size: 1.15rem; }
.ms-solver__result-actions { display: flex; flex-wrap: wrap; gap: .6rem; margin-top: 1.1rem; }
.ms-solver__foot { margin: 1rem 0 0; font-size: .82rem; color: var(--ms-muted, #64748B); text-align: center; }

/* The answer box (also defined in theme tokens; repeated for plugin portability) */
.ms-solver .ms-answer { display: flex; align-items: center; gap: .7rem; flex-wrap: wrap;
	background: var(--ms-accent-soft, #E7F8F1); border: 1px solid #BFEAD9; border-radius: var(--ms-radius, 14px);
	padding: .9rem 1.1rem; margin: 1.1rem 0 .2rem; }
.ms-solver .ms-answer__label { font-family: var(--ms-font-head, inherit); font-weight: 800; color: #047857; }
.ms-solver__solution:focus { outline: none; }
.ms-solver__solution:focus-visible { outline: 3px solid var(--ms-primary, #4F46E5); outline-offset: 4px; border-radius: 8px; }

@media (max-width: 520px) {
	.ms-solver__actions .ms-btn { flex: 1 1 auto; }
}

/* ---------------- Instant calculators ---------------- */
.ms-calc {
	background: var(--ms-surface, #fff); border: 1px solid var(--ms-border, #E2E8F0);
	border-radius: var(--ms-radius-lg, 22px); box-shadow: var(--ms-shadow, 0 4px 14px rgba(15,23,42,.08));
	padding: clamp(16px, 3vw, 24px); max-width: 760px; margin: 1.4rem auto;
}
.ms-calc__head { font-family: var(--ms-font-head, inherit); margin-bottom: .9rem; font-size: 1.05rem; }
.ms-calc__frac, .ms-calc__pct, .ms-calc__stats { display: flex; flex-wrap: wrap; align-items: center; gap: .6rem; }
.ms-calc__fr { display: inline-flex; flex-direction: column; gap: 3px; }
.ms-calc__fr .ms-calc__in { border-bottom: 2px solid var(--ms-ink, #0F172A); text-align: center; }
.ms-calc__in {
	width: 84px; font-size: 1.05rem; font-family: var(--ms-font-body, inherit); color: var(--ms-ink, #0F172A);
	border: 1.5px solid var(--ms-border, #E2E8F0); border-radius: var(--ms-radius-sm, 9px); padding: .5rem .6rem; background: var(--ms-surface, #fff);
}
.ms-calc__fr .ms-calc__in { border: 0; border-radius: 0; width: 90px; }
.ms-calc__op, .ms-calc__mode {
	font-size: 1.05rem; padding: .5rem .6rem; border: 1.5px solid var(--ms-border, #E2E8F0);
	border-radius: var(--ms-radius-sm, 9px); background: var(--ms-surface, #fff); color: var(--ms-ink, #0F172A);
}
.ms-calc__op { width: auto; flex: 0 0 auto; min-width: 60px; text-align: center; }
.ms-calc__mode { flex: 1 1 220px; width: auto; }
.ms-calc__frac { align-items: stretch; }
.ms-calc__fr { justify-content: center; padding: .3rem .2rem; min-width: 96px; }
.ms-calc__data { width: 100%; font-family: var(--ms-font-body, inherit); font-size: 1rem; border: 1.5px solid var(--ms-border, #E2E8F0); border-radius: var(--ms-radius, 14px); padding: .7rem .9rem; resize: vertical; }
.ms-calc__in:focus, .ms-calc__op:focus, .ms-calc__mode:focus, .ms-calc__data:focus { outline: none; border-color: var(--ms-primary, #4F46E5); box-shadow: 0 0 0 4px var(--ms-primary-soft, #EEF0FE); }
.ms-calc__result { margin-top: 1.1rem; padding-top: 1.1rem; border-top: 1px dashed var(--ms-border, #E2E8F0); font-size: 1.05rem; }
.ms-calc__eq { font-size: 1.15rem; }
.ms-calc__table { width: 100%; border-collapse: collapse; margin-top: .8rem; font-size: .95rem; }
.ms-calc__table th, .ms-calc__table td { border: 1px solid var(--ms-border, #E2E8F0); padding: .5rem .8rem; text-align: left; }
.ms-calc__table th { background: var(--ms-surface-2, #F8FAFC); font-weight: 600; width: 55%; }
.ms-calc__foot { margin: 1rem 0 0; font-size: .82rem; color: var(--ms-muted, #64748B); }