/* ============================================================
   Digital Tutorials App — style.css
   Scoped under #dta-app for WordPress plugin compatibility.
   ============================================================ */

#dta-app *,
#dta-app *::before,
#dta-app *::after { box-sizing: border-box; }

#dta-app {
  /* Serif for headings, system sans for body — no external fonts */
  --dta-serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, "Times New Roman", serif;
  --dta-sans: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  /* Light theme (default) */
  --dta-primary: #4f46e5;
  --dta-primary-2: #6d28d9;
  --dta-secondary: #2563eb;
  --dta-accent: #06b6d4;
  --dta-accent-2: #0ea5e9;

  --dta-bg: #f5f7fb;
  --dta-bg-2: #eef1f8;
  --dta-surface: #ffffff;
  --dta-surface-2: #f8fafc;
  --dta-text: #0f172a;
  --dta-heading: #111827;
  --dta-muted: #5b6577;
  --dta-border: #e4e8f0;
  --dta-ring-track: #e6e9f2;

  --dta-shadow-sm: 0 1px 2px rgba(15,23,42,.06), 0 2px 6px rgba(15,23,42,.05);
  --dta-shadow: 0 10px 30px -12px rgba(30,41,80,.22), 0 6px 14px -8px rgba(30,41,80,.14);
  --dta-shadow-lg: 0 30px 60px -24px rgba(30,41,80,.34);
  --dta-glow: 0 0 0 1px rgba(79,70,229,.14), 0 14px 34px -14px rgba(79,70,229,.45);

  --dta-radius: 18px;
  --dta-radius-sm: 12px;
  --dta-radius-lg: 26px;

  --dta-grad: linear-gradient(135deg, #4f46e5 0%, #6d28d9 45%, #2563eb 100%);
  --dta-grad-soft: linear-gradient(135deg, rgba(79,70,229,.10), rgba(6,182,212,.10));

  --dta-max: 1200px;
  --dta-ok: #16a34a;
  --dta-warn: #d97706;
  --dta-danger: #dc2626;

  font-family: var(--dta-sans);
  color: var(--dta-text);
  background: var(--dta-bg);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

#dta-app[data-theme="dark"] {
  --dta-primary: #818cf8;
  --dta-primary-2: #a78bfa;
  --dta-secondary: #60a5fa;
  --dta-accent: #22d3ee;
  --dta-accent-2: #38bdf8;

  --dta-bg: #0b1020;
  --dta-bg-2: #0f1730;
  --dta-surface: #141c33;
  --dta-surface-2: #182140;
  --dta-text: #e6eaf5;
  --dta-heading: #f4f6fc;
  --dta-muted: #9aa6c2;
  --dta-border: #263258;
  --dta-ring-track: #243056;

  --dta-shadow-sm: 0 1px 2px rgba(0,0,0,.4);
  --dta-shadow: 0 18px 40px -18px rgba(0,0,0,.7);
  --dta-shadow-lg: 0 34px 70px -26px rgba(0,0,0,.8);
  --dta-glow: 0 0 0 1px rgba(129,140,248,.28), 0 16px 40px -14px rgba(129,140,248,.5);

  --dta-grad: linear-gradient(135deg, #6366f1 0%, #7c3aed 45%, #2563eb 100%);
  --dta-grad-soft: linear-gradient(135deg, rgba(129,140,248,.16), rgba(34,211,238,.14));
}

/* ---------- base elements (scoped) ---------- */
#dta-app h1, #dta-app h2, #dta-app h3, #dta-app h4 {
  font-family: var(--dta-serif);
  color: var(--dta-heading);
  line-height: 1.12;
  letter-spacing: -.01em;
  margin: 0;
  font-weight: 600;
}
#dta-app p { margin: 0; }
#dta-app a { color: inherit; text-decoration: none; }
#dta-app img { max-width: 100%; display: block; }
#dta-app button { font-family: inherit; cursor: pointer; }
#dta-app ::selection { background: var(--dta-primary); color: #fff; }

#dta-app .dta-container { width: 100%; max-width: var(--dta-max); margin: 0 auto; padding: 0 24px; }
#dta-app .dta-section { padding: 84px 0; }

/* ---------- reveal animation ---------- */
#dta-app [data-reveal] { opacity: 0; transform: translateY(22px); transition: opacity .7s cubic-bezier(.2,.7,.2,1), transform .7s cubic-bezier(.2,.7,.2,1); }
#dta-app [data-reveal].is-in { opacity: 1; transform: none; }

/* ============================================================ NAV */
#dta-app .dta-nav {
  position: sticky; top: 0; z-index: 60;
  background: color-mix(in srgb, var(--dta-surface) 78%, transparent);
  backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s ease, background .3s ease, box-shadow .3s ease;
}
#dta-app .dta-nav.is-scrolled { border-bottom-color: var(--dta-border); box-shadow: var(--dta-shadow-sm); }
#dta-app .dta-nav-inner { max-width: var(--dta-max); margin: 0 auto; padding: 14px 24px; display: flex; align-items: center; gap: 24px; }

#dta-app .dta-brand { display: inline-flex; align-items: center; gap: 10px; font-family: var(--dta-serif); font-weight: 600; font-size: 1.12rem; color: var(--dta-heading); }
#dta-app .dta-brand-mark { display: grid; place-items: center; width: 38px; height: 38px; border-radius: 12px; background: var(--dta-grad); color: #fff; box-shadow: var(--dta-glow); }
#dta-app .dta-brand-text span { background: var(--dta-grad); -webkit-background-clip: text; background-clip: text; color: transparent; }

#dta-app .dta-nav-links { display: flex; align-items: center; gap: 4px; margin-left: auto; }
#dta-app .dta-nav-link { position: relative; padding: 8px 14px; border-radius: 999px; font-size: .95rem; color: var(--dta-muted); font-weight: 500; transition: color .2s, background .2s; }
#dta-app .dta-nav-link:hover { color: var(--dta-heading); background: var(--dta-grad-soft); }

#dta-app .dta-nav-actions { display: flex; align-items: center; gap: 10px; }
#dta-app .dta-theme-toggle { position: relative; width: 44px; height: 44px; border-radius: 12px; border: 1px solid var(--dta-border); background: var(--dta-surface); color: var(--dta-heading); display: grid; place-items: center; transition: transform .2s, box-shadow .2s, border-color .2s; }
#dta-app .dta-theme-toggle:hover { transform: translateY(-2px); box-shadow: var(--dta-shadow); border-color: var(--dta-primary); }
#dta-app .dta-theme-icon { position: absolute; display: grid; place-items: center; transition: opacity .3s, transform .4s; }
#dta-app .dta-theme-moon { opacity: 0; transform: rotate(-40deg) scale(.6); }
#dta-app[data-theme="dark"] .dta-theme-sun { opacity: 0; transform: rotate(40deg) scale(.6); }
#dta-app[data-theme="dark"] .dta-theme-moon { opacity: 1; transform: none; }

#dta-app .dta-menu-btn { display: none; width: 44px; height: 44px; border-radius: 12px; border: 1px solid var(--dta-border); background: var(--dta-surface); flex-direction: column; gap: 5px; align-items: center; justify-content: center; }
#dta-app .dta-menu-btn span { width: 18px; height: 2px; background: var(--dta-heading); border-radius: 2px; transition: transform .3s, opacity .3s; }
#dta-app .dta-menu-btn.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
#dta-app .dta-menu-btn.is-open span:nth-child(2) { opacity: 0; }
#dta-app .dta-menu-btn.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

#dta-app .dta-mobile-menu { display: none; flex-direction: column; padding: 8px 24px 20px; gap: 2px; background: var(--dta-surface); border-bottom: 1px solid var(--dta-border); }
#dta-app .dta-mobile-menu.is-open { display: flex; }
#dta-app .dta-mobile-menu a { padding: 12px 14px; border-radius: 12px; color: var(--dta-text); font-weight: 500; }
#dta-app .dta-mobile-menu a:hover { background: var(--dta-grad-soft); }

/* ============================================================ HERO */
#dta-app .dta-hero { position: relative; overflow: hidden; padding: 72px 0 90px; }
#dta-app .dta-hero-bg { position: absolute; inset: 0; z-index: 0; pointer-events: none; }
#dta-app .dta-blob { position: absolute; border-radius: 50%; filter: blur(60px); opacity: .5; }
#dta-app .dta-blob-1 { width: 460px; height: 460px; background: radial-gradient(circle, rgba(79,70,229,.55), transparent 70%); top: -120px; right: -60px; animation: dta-drift 18s ease-in-out infinite; }
#dta-app .dta-blob-2 { width: 420px; height: 420px; background: radial-gradient(circle, rgba(6,182,212,.45), transparent 70%); bottom: -160px; left: -80px; animation: dta-drift 22s ease-in-out infinite reverse; }
#dta-app .dta-float { position: absolute; font-family: var(--dta-serif); font-size: 2rem; color: var(--dta-primary); opacity: .18; font-weight: 700; }
#dta-app .dta-float-1 { top: 18%; left: 8%; animation: dta-floaty 9s ease-in-out infinite; }
#dta-app .dta-float-2 { top: 62%; left: 14%; animation: dta-floaty 11s ease-in-out infinite .6s; }
#dta-app .dta-float-3 { top: 26%; right: 12%; color: var(--dta-accent); animation: dta-floaty 10s ease-in-out infinite .3s; }
#dta-app .dta-float-4 { bottom: 22%; right: 18%; color: var(--dta-secondary); animation: dta-floaty 12s ease-in-out infinite .9s; }
@keyframes dta-drift { 0%,100%{ transform: translate(0,0) scale(1);} 50%{ transform: translate(30px,-24px) scale(1.08);} }
@keyframes dta-floaty { 0%,100%{ transform: translateY(0) rotate(0);} 50%{ transform: translateY(-16px) rotate(6deg);} }

#dta-app .dta-hero-inner { position: relative; z-index: 1; max-width: var(--dta-max); margin: 0 auto; padding: 0 24px; display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; }
#dta-app .dta-eyebrow { display: inline-block; font-size: .82rem; font-weight: 600; letter-spacing: .12em; text-transform: uppercase; color: var(--dta-primary); padding: 7px 14px; border-radius: 999px; background: var(--dta-grad-soft); border: 1px solid color-mix(in srgb, var(--dta-primary) 22%, transparent); margin-bottom: 22px; }
#dta-app .dta-hero h1 { font-size: clamp(2.4rem, 5vw, 3.9rem); margin-bottom: 20px; }
#dta-app .dta-hero-sub { font-size: 1.12rem; color: var(--dta-muted); max-width: 560px; margin-bottom: 30px; }
#dta-app .dta-hero-cta { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 22px; }
#dta-app .dta-privacy-note { display: inline-flex; align-items: center; gap: 8px; font-size: .9rem; color: var(--dta-muted); }
#dta-app .dta-privacy-note svg { color: var(--dta-ok); }

/* buttons */
#dta-app .dta-btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 13px 24px; border-radius: 999px; font-weight: 600; font-size: .98rem; border: 1px solid transparent; transition: transform .2s, box-shadow .25s, background .25s, border-color .2s, color .2s; }
#dta-app .dta-btn-primary { background: var(--dta-grad); color: #fff; box-shadow: var(--dta-glow); }
#dta-app .dta-btn-primary:hover { transform: translateY(-3px); box-shadow: 0 22px 44px -16px rgba(79,70,229,.7); }
#dta-app .dta-btn-ghost { background: var(--dta-surface); color: var(--dta-heading); border-color: var(--dta-border); }
#dta-app .dta-btn-ghost:hover { transform: translateY(-3px); border-color: var(--dta-primary); box-shadow: var(--dta-shadow); }
#dta-app .dta-btn:focus-visible, #dta-app .dta-chip:focus-visible, #dta-app .dta-tool-card:focus-visible, #dta-app .dta-icon-btn:focus-visible, #dta-app .dta-nav-link:focus-visible { outline: 3px solid color-mix(in srgb, var(--dta-primary) 55%, transparent); outline-offset: 3px; }

/* hero visual */
#dta-app .dta-hero-visual { position: relative; height: 420px; }
#dta-app .dta-dash-card { position: absolute; background: var(--dta-surface); border: 1px solid var(--dta-border); border-radius: var(--dta-radius); box-shadow: var(--dta-shadow-lg); padding: 18px; }
#dta-app .dta-dash-main { top: 30px; left: 40px; width: 250px; animation: dta-floaty 8s ease-in-out infinite; }
#dta-app .dta-dash-head { display: flex; justify-content: space-between; align-items: center; font-size: .82rem; color: var(--dta-muted); margin-bottom: 8px; }
#dta-app .dta-dash-pill { color: var(--dta-ok); background: color-mix(in srgb, var(--dta-ok) 14%, transparent); padding: 3px 10px; border-radius: 999px; font-weight: 600; }
#dta-app .dta-dash-ring { position: relative; display: grid; place-items: center; }
#dta-app .dta-dash-ring svg { transform: rotate(-90deg); }
#dta-app .dta-ring-track { fill: none; stroke: var(--dta-ring-track); stroke-width: 12; }
#dta-app .dta-ring-fill { fill: none; stroke: url(#dtagrad); stroke: var(--dta-primary); stroke-width: 12; stroke-linecap: round; stroke-dasharray: 327; stroke-dashoffset: 92; }
#dta-app .dta-ring-anim { animation: dta-ringfill 1.6s ease forwards; }
@keyframes dta-ringfill { from { stroke-dashoffset: 327; } to { stroke-dashoffset: 92; } }
#dta-app .dta-dash-ring-label { position: absolute; text-align: center; }
#dta-app .dta-dash-ring-label strong { display: block; font-family: var(--dta-serif); font-size: 1.6rem; color: var(--dta-heading); }
#dta-app .dta-dash-ring-label span { font-size: .72rem; color: var(--dta-muted); }
#dta-app .dta-dash-timer { top: 0; right: 0; width: 150px; text-align: center; animation: dta-floaty 9s ease-in-out infinite .5s; }
#dta-app .dta-dash-mini { font-size: .74rem; color: var(--dta-muted); text-transform: uppercase; letter-spacing: .08em; }
#dta-app .dta-dash-clock { display: block; font-family: var(--dta-serif); font-size: 1.9rem; color: var(--dta-primary); margin: 4px 0 8px; }
#dta-app .dta-dash-dots { display: flex; gap: 6px; justify-content: center; }
#dta-app .dta-dash-dots i { width: 8px; height: 8px; border-radius: 50%; background: var(--dta-border); }
#dta-app .dta-dash-dots i.on { background: var(--dta-accent); }
#dta-app .dta-dash-grade { bottom: 34px; right: 10px; width: 150px; animation: dta-floaty 10s ease-in-out infinite .2s; }
#dta-app .dta-dash-grade strong { font-family: var(--dta-serif); font-size: 2.2rem; color: var(--dta-heading); display: block; margin: 2px 0 8px; }
#dta-app .dta-dash-bar { height: 8px; border-radius: 999px; background: var(--dta-ring-track); overflow: hidden; }
#dta-app .dta-dash-bar span { display: block; height: 100%; background: var(--dta-grad); border-radius: 999px; animation: dta-grow 1.4s ease forwards; }
@keyframes dta-grow { from { width: 0 !important; } }
#dta-app .dta-dash-time { bottom: 0; left: 20px; width: 190px; animation: dta-floaty 11s ease-in-out infinite .7s; }
#dta-app .dta-dash-blocks { display: flex; align-items: flex-end; gap: 8px; height: 60px; margin-top: 8px; }
#dta-app .dta-dash-blocks i { flex: 1; background: var(--dta-grad); border-radius: 6px 6px 3px 3px; opacity: .85; animation: dta-rise 1.2s ease forwards; }
@keyframes dta-rise { from { height: 0 !important; } }

/* ============================================================ SECTION HEAD */
#dta-app .dta-section-head { max-width: 720px; margin: 0 auto 48px; text-align: center; }
#dta-app .dta-kicker { display: inline-block; font-size: .78rem; font-weight: 700; letter-spacing: .16em; text-transform: uppercase; color: var(--dta-accent); margin-bottom: 12px; }
#dta-app .dta-section-head h2 { font-size: clamp(1.9rem, 3.5vw, 2.7rem); margin-bottom: 14px; }
#dta-app .dta-section-head p { color: var(--dta-muted); font-size: 1.05rem; }

/* ============================================================ SEARCH + FILTERS */
#dta-app .dta-toolbar { max-width: 620px; margin: 0 auto 22px; }
#dta-app .dta-search { position: relative; display: flex; align-items: center; }
#dta-app .dta-search svg { position: absolute; left: 18px; color: var(--dta-muted); }
#dta-app .dta-search input { width: 100%; padding: 16px 46px 16px 48px; border-radius: 999px; border: 1px solid var(--dta-border); background: var(--dta-surface); color: var(--dta-text); font-size: 1rem; box-shadow: var(--dta-shadow-sm); transition: border-color .2s, box-shadow .2s; }
#dta-app .dta-search input:focus { outline: none; border-color: var(--dta-primary); box-shadow: var(--dta-glow); }
#dta-app .dta-search-clear { position: absolute; right: 12px; width: 30px; height: 30px; border-radius: 50%; border: none; background: var(--dta-bg-2); color: var(--dta-muted); font-size: 1.3rem; line-height: 1; }
#dta-app .dta-search-clear:hover { color: var(--dta-danger); }

#dta-app .dta-chips { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-bottom: 36px; }
#dta-app .dta-chip { padding: 9px 18px; border-radius: 999px; border: 1px solid var(--dta-border); background: var(--dta-surface); color: var(--dta-muted); font-weight: 600; font-size: .9rem; transition: transform .2s, color .2s, background .2s, border-color .2s, box-shadow .2s; }
#dta-app .dta-chip:hover { transform: translateY(-2px); color: var(--dta-heading); border-color: var(--dta-primary); }
#dta-app .dta-chip.is-active { background: var(--dta-grad); color: #fff; border-color: transparent; box-shadow: var(--dta-glow); }
#dta-app .dta-chip-fav.is-active { background: linear-gradient(135deg,#f59e0b,#f97316); }

/* recently used */
#dta-app .dta-recent { margin-bottom: 30px; }
#dta-app .dta-recent-title { font-size: 1rem; color: var(--dta-muted); font-family: var(--dta-sans); font-weight: 700; text-transform: uppercase; letter-spacing: .08em; margin-bottom: 12px; }
#dta-app .dta-recent-list { display: flex; flex-wrap: wrap; gap: 10px; }
#dta-app .dta-recent-item { display: inline-flex; align-items: center; gap: 8px; padding: 8px 14px; border-radius: 999px; border: 1px solid var(--dta-border); background: var(--dta-surface); font-size: .88rem; font-weight: 600; color: var(--dta-text); transition: transform .2s, box-shadow .2s, border-color .2s; }
#dta-app .dta-recent-item:hover { transform: translateY(-2px); box-shadow: var(--dta-shadow); border-color: var(--dta-primary); }
#dta-app .dta-recent-item .dta-mini-ico { color: var(--dta-primary); display: inline-flex; }

/* ============================================================ TOOL GRID + CARDS */
#dta-app .dta-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 22px; }
#dta-app .dta-tool-card { position: relative; text-align: left; background: var(--dta-surface); border: 1px solid var(--dta-border); border-radius: var(--dta-radius); padding: 24px; overflow: hidden; transition: transform .28s cubic-bezier(.2,.7,.2,1), box-shadow .28s, border-color .28s; display: flex; flex-direction: column; gap: 12px; cursor: pointer; -webkit-user-select: none; user-select: none; }
#dta-app .dta-tool-card::before { content: ""; position: absolute; inset: 0; background: var(--dta-grad-soft); opacity: 0; transition: opacity .3s; pointer-events: none; }
#dta-app .dta-tool-card:hover { transform: translateY(-8px); box-shadow: var(--dta-shadow-lg); border-color: color-mix(in srgb, var(--dta-primary) 40%, transparent); }
#dta-app .dta-tool-card:hover::before { opacity: 1; }
#dta-app .dta-tool-card > * { position: relative; z-index: 1; }
#dta-app .dta-card-top { display: flex; align-items: flex-start; justify-content: space-between; }
#dta-app .dta-card-ico { width: 52px; height: 52px; border-radius: 14px; display: grid; place-items: center; background: var(--dta-grad); color: #fff; box-shadow: var(--dta-glow); transition: transform .3s; }
#dta-app .dta-tool-card:hover .dta-card-ico { transform: rotate(-6deg) scale(1.05); }
#dta-app .dta-card-fav { width: 34px; height: 34px; border-radius: 10px; border: 1px solid var(--dta-border); background: var(--dta-surface); color: var(--dta-muted); font-size: 1.1rem; line-height: 1; display: grid; place-items: center; transition: color .2s, border-color .2s, transform .2s; }
#dta-app .dta-card-fav:hover { transform: scale(1.1); color: #f59e0b; border-color: #f59e0b; }
#dta-app .dta-card-fav.is-fav { color: #f59e0b; border-color: #f59e0b; background: color-mix(in srgb,#f59e0b 12%, transparent); }
#dta-app .dta-card-name { font-family: var(--dta-serif); font-size: 1.22rem; color: var(--dta-heading); }
#dta-app .dta-card-desc { color: var(--dta-muted); font-size: .93rem; flex: 1; }
#dta-app .dta-card-foot { display: flex; align-items: center; justify-content: space-between; margin-top: 4px; }
#dta-app .dta-card-cat { font-size: .74rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--dta-accent); }
#dta-app .dta-card-open { display: inline-flex; align-items: center; gap: 6px; font-weight: 600; font-size: .9rem; color: var(--dta-primary); }
#dta-app .dta-card-open svg { transition: transform .2s; }
#dta-app .dta-tool-card:hover .dta-card-open svg { transform: translateX(4px); }

/* empty state */
#dta-app .dta-empty { text-align: center; padding: 60px 20px; color: var(--dta-muted); }
#dta-app .dta-empty-ico { font-size: 2.6rem; margin-bottom: 12px; }
#dta-app .dta-empty h3 { font-size: 1.3rem; color: var(--dta-heading); margin-bottom: 8px; }

/* ============================================================ INSIGHTS */
#dta-app .dta-insights-wrap { padding: 40px 0; }
#dta-app .dta-insights { display: grid; grid-template-columns: repeat(4,1fr); gap: 18px; background: var(--dta-grad); border-radius: var(--dta-radius-lg); padding: 40px; box-shadow: var(--dta-shadow-lg); }
#dta-app .dta-insight { text-align: center; color: #fff; }
#dta-app .dta-insight-num { display: block; font-family: var(--dta-serif); font-size: clamp(2rem,4vw,3rem); font-weight: 700; }
#dta-app .dta-insight-label { font-size: .92rem; opacity: .88; }

/* ============================================================ STEPS */
#dta-app .dta-steps { display: grid; grid-template-columns: repeat(4,1fr); gap: 22px; }
#dta-app .dta-step { position: relative; background: var(--dta-surface); border: 1px solid var(--dta-border); border-radius: var(--dta-radius); padding: 30px 24px 24px; box-shadow: var(--dta-shadow-sm); transition: transform .28s, box-shadow .28s; }
#dta-app .dta-step:hover { transform: translateY(-6px); box-shadow: var(--dta-shadow); }
#dta-app .dta-step-num { display: grid; place-items: center; width: 48px; height: 48px; border-radius: 14px; background: var(--dta-grad-soft); color: var(--dta-primary); font-family: var(--dta-serif); font-size: 1.5rem; font-weight: 700; margin-bottom: 16px; border: 1px solid color-mix(in srgb,var(--dta-primary) 22%,transparent); }
#dta-app .dta-step h3 { font-size: 1.16rem; margin-bottom: 8px; }
#dta-app .dta-step p { color: var(--dta-muted); font-size: .94rem; }

/* ============================================================ WHY */
#dta-app .dta-why-wrap { background: var(--dta-bg-2); }
#dta-app .dta-why { display: grid; grid-template-columns: repeat(auto-fit,minmax(220px,1fr)); gap: 20px; }
#dta-app .dta-why-card { background: var(--dta-surface); border: 1px solid var(--dta-border); border-radius: var(--dta-radius); padding: 26px; box-shadow: var(--dta-shadow-sm); transition: transform .28s, box-shadow .28s; }
#dta-app .dta-why-card:hover { transform: translateY(-6px); box-shadow: var(--dta-shadow); }
#dta-app .dta-why-ico { width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center; background: var(--dta-grad-soft); color: var(--dta-primary); margin-bottom: 14px; }
#dta-app .dta-why-card h3 { font-size: 1.12rem; margin-bottom: 8px; }
#dta-app .dta-why-card p { color: var(--dta-muted); font-size: .93rem; }

/* ============================================================ FAQ */
#dta-app .dta-faq-container { max-width: 820px; }
#dta-app .dta-faq-item { border: 1px solid var(--dta-border); border-radius: var(--dta-radius-sm); background: var(--dta-surface); margin-bottom: 12px; overflow: hidden; transition: box-shadow .25s, border-color .25s; }
#dta-app .dta-faq-item.is-open { box-shadow: var(--dta-shadow); border-color: color-mix(in srgb,var(--dta-primary) 30%,transparent); }
#dta-app .dta-faq-q { width: 100%; text-align: left; background: none; border: none; padding: 20px 22px; display: flex; align-items: center; justify-content: space-between; gap: 16px; font-family: var(--dta-serif); font-size: 1.06rem; color: var(--dta-heading); font-weight: 600; }
#dta-app .dta-faq-icon { flex: none; width: 26px; height: 26px; border-radius: 50%; display: grid; place-items: center; background: var(--dta-grad-soft); color: var(--dta-primary); font-size: 1.2rem; transition: transform .3s; }
#dta-app .dta-faq-item.is-open .dta-faq-icon { transform: rotate(45deg); }
#dta-app .dta-faq-a { max-height: 0; overflow: hidden; transition: max-height .35s ease; }
#dta-app .dta-faq-a-inner { padding: 0 22px 20px; color: var(--dta-muted); font-size: .96rem; }

/* ============================================================ FOOTER */
#dta-app .dta-footer { background: var(--dta-surface); border-top: 1px solid var(--dta-border); padding-top: 54px; }
#dta-app .dta-footer-inner { display: flex; flex-wrap: wrap; gap: 30px; justify-content: space-between; padding-bottom: 40px; }
#dta-app .dta-footer-brand { max-width: 340px; }
#dta-app .dta-footer-brand p { color: var(--dta-muted); margin-top: 12px; font-size: .94rem; }
#dta-app .dta-footer-nav { display: grid; grid-template-columns: repeat(2,auto); gap: 10px 40px; align-content: start; }
#dta-app .dta-footer-nav a { color: var(--dta-muted); font-size: .95rem; font-weight: 500; transition: color .2s; }
#dta-app .dta-footer-nav a:hover { color: var(--dta-primary); }
#dta-app .dta-footer-base { border-top: 1px solid var(--dta-border); padding: 20px 24px; text-align: center; color: var(--dta-muted); font-size: .86rem; }

/* ============================================================ MODAL WORKSPACE */
#dta-app .dta-modal { position: fixed; inset: 0; z-index: 100; display: none; }
#dta-app .dta-modal.is-open { display: block; }
#dta-app .dta-modal-overlay { position: absolute; inset: 0; background: rgba(9,12,25,.55); backdrop-filter: blur(4px); animation: dta-fade .3s ease; }
#dta-app .dta-modal-panel { position: absolute; top: 50%; left: 50%; transform: translate(-50%,-48%); width: min(1040px, calc(100vw - 32px)); max-height: calc(100vh - 48px); background: var(--dta-surface); border: 1px solid var(--dta-border); border-radius: var(--dta-radius-lg); box-shadow: var(--dta-shadow-lg); display: flex; flex-direction: column; overflow: hidden; opacity: 0; animation: dta-modalin .35s cubic-bezier(.2,.8,.2,1) forwards; }
@keyframes dta-fade { from { opacity: 0; } }
@keyframes dta-modalin { to { transform: translate(-50%,-50%); opacity: 1; } }
#dta-app .dta-modal-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 22px 26px; border-bottom: 1px solid var(--dta-border); background: var(--dta-surface-2); }
#dta-app .dta-modal-heading { display: flex; align-items: center; gap: 16px; }
#dta-app .dta-modal-ico { width: 52px; height: 52px; border-radius: 14px; display: grid; place-items: center; background: var(--dta-grad); color: #fff; box-shadow: var(--dta-glow); flex: none; }
#dta-app .dta-modal-head h2 { font-size: 1.4rem; }
#dta-app .dta-modal-desc { color: var(--dta-muted); font-size: .92rem; margin-top: 2px; }
#dta-app .dta-modal-head-actions { display: flex; gap: 8px; flex: none; }
#dta-app .dta-icon-btn { width: 42px; height: 42px; border-radius: 12px; border: 1px solid var(--dta-border); background: var(--dta-surface); color: var(--dta-muted); font-size: 1.5rem; line-height: 1; display: grid; place-items: center; transition: color .2s, border-color .2s, transform .2s; }
#dta-app .dta-icon-btn:hover { transform: scale(1.06); color: var(--dta-heading); border-color: var(--dta-primary); }
#dta-app .dta-fav-toggle.is-fav { color: #f59e0b; border-color: #f59e0b; }
#dta-app .dta-modal-body { padding: 26px; overflow-y: auto; }

/* small data modal */
#dta-app .dta-data-panel { width: min(520px, calc(100vw - 32px)); }
#dta-app .dta-data-list { display: flex; flex-direction: column; gap: 8px; }
#dta-app .dta-data-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 12px 14px; border: 1px solid var(--dta-border); border-radius: var(--dta-radius-sm); background: var(--dta-surface-2); }
#dta-app .dta-data-row span { font-size: .92rem; color: var(--dta-text); }
#dta-app .dta-data-row b { font-family: var(--dta-serif); font-size: 1.1rem; color: var(--dta-primary); }
#dta-app .dta-data-row.is-empty b { color: var(--dta-muted); }

/* export modal */
#dta-app .dta-export-panel { width: min(640px, calc(100vw - 32px)); }
#dta-app .dta-export-ta { width: 100%; font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace; font-size: .82rem; line-height: 1.5; background: var(--dta-surface-2); border: 1px solid var(--dta-border); border-radius: var(--dta-radius-sm); padding: 12px 14px; color: var(--dta-text); resize: vertical; }
#dta-app .dta-print-preview { background: #ffffff; color: #111; border: 1px solid var(--dta-border); border-radius: var(--dta-radius-sm); padding: 26px 28px; max-height: 46vh; overflow: auto; }
#dta-app .dta-print-preview .doc-head { border-bottom: 3px solid #4f46e5; padding-bottom: 12px; margin-bottom: 18px; }
#dta-app .dta-print-preview .doc-brand { font-size: 11px; letter-spacing: .14em; text-transform: uppercase; color: #4f46e5; font-family: var(--dta-sans); font-weight: 700; }
#dta-app .dta-print-preview h1 { font-family: var(--dta-serif); font-size: 22px; color: #111; margin: 4px 0 2px; }
#dta-app .dta-print-preview h2 { font-family: var(--dta-sans); font-size: 13px; color: #4f46e5; text-transform: uppercase; letter-spacing: .06em; margin: 18px 0 4px; }
#dta-app .dta-print-preview .doc-meta { font-family: var(--dta-sans); font-size: 12px; color: #555; }
#dta-app .dta-print-preview p, #dta-app .dta-print-preview li { font-size: 13px; color: #222; }
#dta-app .dta-print-preview .doc-time { color: #4f46e5; font-weight: 700; font-family: var(--dta-sans); font-size: 11px; }
#dta-app .dta-print-preview .doc-foot { margin-top: 22px; border-top: 1px solid #ddd; padding-top: 10px; font-family: var(--dta-sans); font-size: 10px; color: #999; }

/* stacking: tool modal (100) < export/data dialogs < toast */
#dta-app #dta-export-modal, #dta-app #dta-data-modal { z-index: 160; }
#dta-app .dta-toast-wrap { z-index: 320; }

/* in-page print area */
#dta-print-area { display: none; }
@media print {
  html, body { background: #fff !important; }
  body.dta-printing > *:not(#dta-print-area) { display: none !important; }
  body.dta-printing #dta-print-area { display: block !important; }
  #dta-print-area .dta-print-doc { font-family: Georgia, "Times New Roman", serif; color: #111; line-height: 1.6; padding: 0; }
  #dta-print-area .doc-head { border-bottom: 3px solid #4f46e5; padding-bottom: 16px; margin-bottom: 24px; }
  #dta-print-area .doc-brand { font-size: 12px; letter-spacing: .14em; text-transform: uppercase; color: #4f46e5; font-family: Arial, sans-serif; font-weight: 700; }
  #dta-print-area h1 { font-size: 26px; margin: 6px 0 2px; }
  #dta-print-area h2 { font-size: 15px; margin: 22px 0 6px; color: #4f46e5; font-family: Arial, sans-serif; text-transform: uppercase; letter-spacing: .06em; }
  #dta-print-area .doc-meta { font-family: Arial, sans-serif; font-size: 13px; color: #555; }
  #dta-print-area p, #dta-print-area li { font-size: 14px; }
  #dta-print-area .doc-section { margin-bottom: 14px; }
  #dta-print-area .doc-time { color: #4f46e5; font-weight: 700; font-family: Arial, sans-serif; font-size: 12px; }
  #dta-print-area .doc-foot { margin-top: 36px; border-top: 1px solid #ddd; padding-top: 12px; font-family: Arial, sans-serif; font-size: 11px; color: #888; }
  @page { margin: 16mm; }
}

/* workspace layout */
#dta-app .dta-ws { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
#dta-app .dta-ws-inputs, #dta-app .dta-ws-results { min-width: 0; }
#dta-app .dta-panel { background: var(--dta-surface-2); border: 1px solid var(--dta-border); border-radius: var(--dta-radius); padding: 22px; }
#dta-app .dta-panel-title { font-family: var(--dta-sans); font-size: .78rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--dta-muted); margin-bottom: 16px; display: flex; align-items: center; gap: 8px; }

/* forms */
#dta-app .dta-field { margin-bottom: 16px; }
#dta-app .dta-field > label { display: block; font-size: .88rem; font-weight: 600; color: var(--dta-text); margin-bottom: 7px; }
#dta-app .dta-field .dta-hint { font-weight: 400; color: var(--dta-muted); font-size: .8rem; }
#dta-app #dta-app input, #dta-app input[type="text"], #dta-app input[type="number"], #dta-app input[type="date"], #dta-app input[type="time"], #dta-app input[type="search"],
#dta-app select, #dta-app textarea {
  width: 100%; padding: 11px 14px; border-radius: var(--dta-radius-sm); border: 1px solid var(--dta-border); background: var(--dta-surface); color: var(--dta-text); font-family: inherit; font-size: .95rem; transition: border-color .2s, box-shadow .2s; }
#dta-app textarea { resize: vertical; min-height: 90px; line-height: 1.5; }
#dta-app select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23888' stroke-width='2' stroke-linecap='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 12px center; padding-right: 38px; }
#dta-app input:focus, #dta-app select:focus, #dta-app textarea:focus { outline: none; border-color: var(--dta-primary); box-shadow: 0 0 0 3px color-mix(in srgb,var(--dta-primary) 20%,transparent); }
#dta-app .dta-row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
#dta-app .dta-row3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 12px; }

#dta-app .dta-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
#dta-app .dta-btn-sm { padding: 10px 18px; font-size: .9rem; }
#dta-app .dta-btn-soft { background: var(--dta-surface); border-color: var(--dta-border); color: var(--dta-heading); }
#dta-app .dta-btn-soft:hover { border-color: var(--dta-primary); transform: translateY(-2px); box-shadow: var(--dta-shadow-sm); }

/* validation + notices */
#dta-app .dta-error { color: var(--dta-danger); font-size: .82rem; margin-top: 6px; display: none; }
#dta-app .dta-field.has-error input, #dta-app .dta-field.has-error select, #dta-app .dta-field.has-error textarea { border-color: var(--dta-danger); }
#dta-app .dta-field.has-error .dta-error { display: block; }
#dta-app .dta-alert { padding: 12px 16px; border-radius: var(--dta-radius-sm); font-size: .9rem; margin-bottom: 14px; border: 1px solid transparent; }
#dta-app .dta-alert-warn { background: color-mix(in srgb,var(--dta-warn) 12%,transparent); color: var(--dta-warn); border-color: color-mix(in srgb,var(--dta-warn) 30%,transparent); }
#dta-app .dta-alert-ok { background: color-mix(in srgb,var(--dta-ok) 12%,transparent); color: var(--dta-ok); border-color: color-mix(in srgb,var(--dta-ok) 30%,transparent); }
#dta-app .dta-alert-danger { background: color-mix(in srgb,var(--dta-danger) 12%,transparent); color: var(--dta-danger); border-color: color-mix(in srgb,var(--dta-danger) 30%,transparent); }

/* results */
#dta-app .dta-result-empty { text-align: center; color: var(--dta-muted); padding: 30px 10px; }
#dta-app .dta-result-empty .dta-re-ico { font-size: 2rem; margin-bottom: 10px; opacity: .7; }
#dta-app .dta-stat-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 16px; }
#dta-app .dta-stat { background: var(--dta-surface); border: 1px solid var(--dta-border); border-radius: var(--dta-radius-sm); padding: 14px; }
#dta-app .dta-stat-val { font-family: var(--dta-serif); font-size: 1.5rem; color: var(--dta-heading); font-weight: 700; }
#dta-app .dta-stat-lab { font-size: .8rem; color: var(--dta-muted); margin-top: 2px; }
#dta-app .dta-stat-full { grid-column: 1/-1; }

/* progress bars / meters */
#dta-app .dta-bar-row { margin-bottom: 12px; }
#dta-app .dta-bar-head { display: flex; justify-content: space-between; font-size: .85rem; margin-bottom: 5px; color: var(--dta-text); }
#dta-app .dta-bar-head b { color: var(--dta-heading); }
#dta-app .dta-bar { height: 12px; border-radius: 999px; background: var(--dta-ring-track); overflow: hidden; }
#dta-app .dta-bar span { display: block; height: 100%; border-radius: 999px; background: var(--dta-grad); transition: width 1s cubic-bezier(.2,.8,.2,1); }

/* progress ring (results) */
#dta-app .dta-ring-wrap { display: flex; align-items: center; gap: 18px; margin-bottom: 16px; }
#dta-app .dta-ring2 { position: relative; width: 130px; height: 130px; flex: none; }
#dta-app .dta-ring2 svg { transform: rotate(-90deg); }
#dta-app .dta-ring2 .track { fill: none; stroke: var(--dta-ring-track); stroke-width: 12; }
#dta-app .dta-ring2 .fill { fill: none; stroke: var(--dta-primary); stroke-width: 12; stroke-linecap: round; transition: stroke-dashoffset 1.1s cubic-bezier(.2,.8,.2,1); }
#dta-app .dta-ring2-label { position: absolute; inset: 0; display: grid; place-items: center; text-align: center; }
#dta-app .dta-ring2-label strong { font-family: var(--dta-serif); font-size: 1.7rem; color: var(--dta-heading); }
#dta-app .dta-ring2-label span { display: block; font-size: .72rem; color: var(--dta-muted); }

/* explanation box */
#dta-app .dta-explain { margin-top: 16px; border: 1px dashed var(--dta-border); border-radius: var(--dta-radius-sm); padding: 14px 16px; font-size: .86rem; color: var(--dta-muted); background: var(--dta-surface); }
#dta-app .dta-explain b { color: var(--dta-text); }
#dta-app .dta-explain code { background: var(--dta-bg-2); padding: 1px 6px; border-radius: 6px; font-size: .82rem; }

/* dynamic rows */
#dta-app .dta-rows { display: flex; flex-direction: column; gap: 10px; margin-bottom: 12px; }
#dta-app .dta-drow { display: grid; gap: 8px; align-items: end; background: var(--dta-surface); border: 1px solid var(--dta-border); border-radius: var(--dta-radius-sm); padding: 10px; }
#dta-app .dta-drow-del { width: 34px; height: 38px; border-radius: 10px; border: 1px solid var(--dta-border); background: var(--dta-surface); color: var(--dta-danger); font-size: 1.1rem; }
#dta-app .dta-drow-del:hover { background: color-mix(in srgb,var(--dta-danger) 12%,transparent); }
#dta-app .dta-drow label { font-size: .74rem; color: var(--dta-muted); margin-bottom: 3px; display: block; }

/* schedule / timetable */
#dta-app .dta-sched { display: flex; flex-direction: column; gap: 8px; }
#dta-app .dta-sched-slot { display: flex; align-items: center; gap: 12px; padding: 10px 14px; border-radius: var(--dta-radius-sm); border: 1px solid var(--dta-border); background: var(--dta-surface); }
#dta-app .dta-sched-time { font-variant-numeric: tabular-nums; font-weight: 700; color: var(--dta-primary); font-size: .85rem; min-width: 108px; }
#dta-app .dta-sched-slot.is-break { border-style: dashed; opacity: .85; }
#dta-app .dta-sched-slot.is-break .dta-sched-time { color: var(--dta-accent); }
#dta-app .dta-day-block { margin-bottom: 14px; }
#dta-app .dta-day-title { font-weight: 700; color: var(--dta-heading); margin-bottom: 8px; font-size: .95rem; }

/* timer */
#dta-app .dta-timer { text-align: center; }
#dta-app .dta-timer-ring { position: relative; width: 240px; height: 240px; margin: 0 auto 18px; }
#dta-app .dta-timer-ring svg { transform: rotate(-90deg); }
#dta-app .dta-timer-ring .track { fill: none; stroke: var(--dta-ring-track); stroke-width: 10; }
#dta-app .dta-timer-ring .fill { fill: none; stroke: var(--dta-primary); stroke-width: 10; stroke-linecap: round; transition: stroke-dashoffset .3s linear; }
#dta-app .dta-timer-time { position: absolute; inset: 0; display: grid; place-items: center; font-family: var(--dta-serif); font-size: 3rem; color: var(--dta-heading); font-variant-numeric: tabular-nums; }
#dta-app .dta-timer-mode { text-align: center; margin-bottom: 6px; font-weight: 600; color: var(--dta-primary); letter-spacing: .05em; text-transform: uppercase; font-size: .82rem; }
#dta-app .dta-timer-modes { display: flex; gap: 8px; justify-content: center; margin-bottom: 18px; flex-wrap: wrap; }
#dta-app .dta-timer-modes button { padding: 8px 14px; border-radius: 999px; border: 1px solid var(--dta-border); background: var(--dta-surface); color: var(--dta-muted); font-weight: 600; font-size: .85rem; }
#dta-app .dta-timer-modes button.is-active { background: var(--dta-grad); color: #fff; border-color: transparent; }
#dta-app .dta-timer-sessions { color: var(--dta-muted); font-size: .9rem; margin-top: 12px; }

/* flashcard flip */
#dta-app .dta-flash { perspective: 1200px; margin-bottom: 16px; }
#dta-app .dta-flash-inner { position: relative; width: 100%; min-height: 190px; transition: transform .6s cubic-bezier(.2,.8,.2,1); transform-style: preserve-3d; cursor: pointer; }
#dta-app .dta-flash.is-flipped .dta-flash-inner { transform: rotateY(180deg); }
#dta-app .dta-flash-face { position: absolute; inset: 0; backface-visibility: hidden; border-radius: var(--dta-radius); border: 1px solid var(--dta-border); background: var(--dta-surface); display: grid; place-items: center; text-align: center; padding: 22px; }
#dta-app .dta-flash-face .dta-flash-tag { position: absolute; top: 12px; left: 14px; font-size: .72rem; text-transform: uppercase; letter-spacing: .08em; color: var(--dta-accent); font-weight: 700; }
#dta-app .dta-flash-face .dta-flash-side { position: absolute; top: 12px; right: 14px; font-size: .7rem; color: var(--dta-muted); }
#dta-app .dta-flash-text { font-family: var(--dta-serif); font-size: 1.25rem; color: var(--dta-heading); }
#dta-app .dta-flash-back { transform: rotateY(180deg); background: var(--dta-grad-soft); }
#dta-app .dta-flash-nav { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
#dta-app .dta-flash-count { color: var(--dta-muted); font-size: .9rem; }

/* list items (notes, vocab, progress, countdowns) */
#dta-app .dta-list { display: flex; flex-direction: column; gap: 12px; }
#dta-app .dta-litem { background: var(--dta-surface); border: 1px solid var(--dta-border); border-radius: var(--dta-radius-sm); padding: 16px; transition: box-shadow .2s, border-color .2s; }
#dta-app .dta-litem:hover { box-shadow: var(--dta-shadow-sm); }
#dta-app .dta-litem-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 10px; }
#dta-app .dta-litem-title { font-family: var(--dta-serif); font-size: 1.1rem; color: var(--dta-heading); }
#dta-app .dta-litem-meta { font-size: .78rem; color: var(--dta-muted); margin-top: 2px; }
#dta-app .dta-litem-body { color: var(--dta-text); font-size: .92rem; margin-top: 8px; white-space: pre-wrap; }
#dta-app .dta-litem-actions { display: flex; gap: 6px; flex: none; }
#dta-app .dta-tag { display: inline-block; font-size: .72rem; padding: 2px 8px; border-radius: 999px; background: var(--dta-grad-soft); color: var(--dta-primary); margin: 4px 4px 0 0; font-weight: 600; }
#dta-app .dta-chip-x { width: 30px; height: 30px; border-radius: 8px; border: 1px solid var(--dta-border); background: var(--dta-surface); color: var(--dta-muted); font-size: .95rem; display: grid; place-items: center; }
#dta-app .dta-chip-x:hover { color: var(--dta-danger); border-color: var(--dta-danger); }

/* countdown display */
#dta-app .dta-countdown { display: grid; grid-template-columns: repeat(4,1fr); gap: 10px; text-align: center; }
#dta-app .dta-cd-cell { background: var(--dta-surface); border: 1px solid var(--dta-border); border-radius: var(--dta-radius-sm); padding: 14px 6px; }
#dta-app .dta-cd-val { font-family: var(--dta-serif); font-size: 2rem; color: var(--dta-primary); font-variant-numeric: tabular-nums; }
#dta-app .dta-cd-lab { font-size: .72rem; text-transform: uppercase; letter-spacing: .06em; color: var(--dta-muted); }

/* toast */
#dta-app .dta-toast-wrap { position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%); z-index: 200; display: flex; flex-direction: column; gap: 10px; align-items: center; pointer-events: none; }
#dta-app .dta-toast { background: var(--dta-heading); color: var(--dta-surface); padding: 12px 20px; border-radius: 999px; font-size: .9rem; font-weight: 600; box-shadow: var(--dta-shadow-lg); display: flex; align-items: center; gap: 8px; animation: dta-toastin .3s cubic-bezier(.2,.8,.2,1); }
#dta-app[data-theme="dark"] .dta-toast { background: var(--dta-surface); color: var(--dta-heading); border: 1px solid var(--dta-border); }
#dta-app .dta-toast.dta-out { animation: dta-toastout .3s ease forwards; }
#dta-app .dta-toast-ico { color: var(--dta-accent); }
@keyframes dta-toastin { from { opacity: 0; transform: translateY(16px); } }
@keyframes dta-toastout { to { opacity: 0; transform: translateY(16px); } }

/* misc helpers */
#dta-app .dta-muted-note { font-size: .82rem; color: var(--dta-muted); margin-top: 10px; }
#dta-app .dta-pre { white-space: pre-wrap; font-family: var(--dta-sans); background: var(--dta-surface); border: 1px solid var(--dta-border); border-radius: var(--dta-radius-sm); padding: 14px; font-size: .88rem; max-height: 320px; overflow: auto; line-height: 1.6; }
#dta-app .dta-badge { display: inline-flex; align-items: center; gap: 5px; font-size: .78rem; font-weight: 700; padding: 4px 10px; border-radius: 999px; }
#dta-app .dta-badge.ahead, #dta-app .dta-badge.ok { background: color-mix(in srgb,var(--dta-ok) 15%,transparent); color: var(--dta-ok); }
#dta-app .dta-badge.behind, #dta-app .dta-badge.bad { background: color-mix(in srgb,var(--dta-danger) 15%,transparent); color: var(--dta-danger); }
#dta-app .dta-badge.track, #dta-app .dta-badge.warn { background: color-mix(in srgb,var(--dta-warn) 15%,transparent); color: var(--dta-warn); }

/* ============================================================ RESPONSIVE */
@media (max-width: 1024px) {
  #dta-app .dta-hero-inner { grid-template-columns: 1fr; gap: 40px; }
  #dta-app .dta-hero-visual { max-width: 460px; margin: 0 auto; width: 100%; }
  #dta-app .dta-steps { grid-template-columns: repeat(2,1fr); }
  #dta-app .dta-insights { grid-template-columns: repeat(2,1fr); }
}
@media (max-width: 860px) {
  #dta-app .dta-nav-links { display: none; }
  #dta-app .dta-menu-btn { display: flex; }
  #dta-app .dta-ws { grid-template-columns: 1fr; }
  #dta-app .dta-section { padding: 60px 0; }
}
@media (max-width: 560px) {
  #dta-app .dta-container, #dta-app .dta-nav-inner, #dta-app .dta-hero-inner { padding-left: 18px; padding-right: 18px; }
  #dta-app .dta-steps, #dta-app .dta-insights { grid-template-columns: 1fr; }
  #dta-app .dta-grid { grid-template-columns: 1fr; }
  #dta-app .dta-stat-grid { grid-template-columns: 1fr; }
  #dta-app .dta-row2, #dta-app .dta-row3 { grid-template-columns: 1fr; }
  #dta-app .dta-hero-visual { height: 380px; }
  #dta-app .dta-modal-body { padding: 18px; }
  #dta-app .dta-countdown { grid-template-columns: repeat(2,1fr); }
  #dta-app .dta-footer-inner { flex-direction: column; }
}

/* reduced motion */
@media (prefers-reduced-motion: reduce) {
  #dta-app *, #dta-app *::before, #dta-app *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; scroll-behavior: auto !important; }
  #dta-app [data-reveal] { opacity: 1; transform: none; }
}

html { scroll-behavior: smooth; }