/* ============================================================
   tutorial.css — 教程页（tutorial-zh.html / tutorial-en.html）专用样式
   依赖：common.css 先加载
   ============================================================ */

/* Tutorial layout overrides body to flex column（顶部 nav + 下方横排区域） */
body { display: flex; flex-direction: column; font-size: 15px; line-height: 1.75; }

/* sidebar + content 横排包裹层 */
.tutorial-body { display: flex; flex: 1; }

/* ── Sidebar ── */
.sidebar {
  width: 268px; background: var(--surface);
  border-right: 1px solid var(--border); padding: 28px 16px 28px 20px;
  position: sticky; top: var(--nav-h); height: calc(100vh - var(--nav-h));
  overflow-y: auto; flex-shrink: 0;
  scrollbar-width: thin; scrollbar-color: rgba(255,60,110,0.3) transparent;
}
.sidebar-logo { font-family: 'Syne', sans-serif; font-weight: 800; font-size: 1.25rem; margin-bottom: 4px; text-decoration: none; color: var(--text); display: block; }
.sidebar-logo:hover { color: var(--text); }
.sidebar-logo span { color: var(--accent); }
.sidebar-meta { color: var(--muted); font-size: 0.72rem; margin-bottom: 28px; }

.nav-group { margin-bottom: 24px; }
.nav-group-title { font-size: 0.63rem; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted); margin-bottom: 8px; padding-left: 8px; }
.nav-group ul { list-style: none; }
.nav-group li { margin-bottom: 1px; }
.nav-group a { display: block; padding: 6px 10px; border-radius: 6px; color: var(--muted); text-decoration: none; font-size: 0.82rem; transition: all 0.16s; line-height: 1.4; }
.nav-group a:hover { color: var(--text); background: rgba(255,60,110,0.08); }
.nav-group a.active { color: var(--accent); background: rgba(255,60,110,0.1); }

.sidebar-btm { padding-top: 20px; border-top: 1px solid var(--border); }
.sidebar-btm a { color: var(--muted); text-decoration: none; font-size: 0.78rem; display: block; margin-bottom: 7px; transition: color 0.16s; }
.sidebar-btm a:hover { color: var(--text); }

/* ── Main Content ── */
.content { flex: 1; padding: 56px 80px 100px; min-width: 0; }

/* ── Typography ── */
h1 { font-family: 'Syne', sans-serif; font-weight: 800; font-size: 2.2rem; letter-spacing: -0.02em; margin-bottom: 10px; line-height: 1.2; }
.page-desc { color: var(--muted); font-size: 1rem; border-bottom: 1px solid var(--border); padding-bottom: 28px; margin-bottom: 44px; line-height: 1.7; }
h2 { font-family: 'Syne', sans-serif; font-weight: 700; font-size: 1.45rem; letter-spacing: -0.02em; margin: 56px 0 16px; padding-top: 16px; border-top: 1px solid var(--border); line-height: 1.3; }
h2:first-of-type { border-top: none; margin-top: 0; }
h3 { font-size: 1.05rem; font-weight: 600; margin: 28px 0 10px; color: var(--text); }
h4 { font-size: 0.9rem; font-weight: 600; margin: 20px 0 8px; color: var(--purple); }
p  { color: #c4c4dc; margin-bottom: 14px; }
strong { color: var(--text); }
a  { color: var(--accent); }

/* ── Step List ── */
.steps { counter-reset: step; list-style: none; margin: 18px 0 26px; }
.steps li {
  counter-increment: step; display: flex; gap: 14px; align-items: flex-start;
  padding: 14px 16px; background: var(--card); border: 1px solid var(--border);
  border-radius: 10px; margin-bottom: 8px; font-size: 0.9rem; color: #c4c4dc;
}
.steps li::before { content: counter(step); background: var(--accent); color: #fff; width: 24px; height: 24px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 0.72rem; font-weight: 700; flex-shrink: 0; margin-top: 1px; }
.steps li strong { color: var(--text); }

/* ── Callout Boxes ── */
.box { border-radius: 10px; padding: 14px 18px; margin: 18px 0; border-left: 3px solid; font-size: 0.88rem; }
.box p { margin: 0; color: var(--muted); line-height: 1.7; }
.box p + p { margin-top: 6px; }
.box-title { font-size: 0.7rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 6px; }
.tip  { background: rgba(37,244,238,0.07);  border-color: var(--cyan);   } .tip  .box-title { color: var(--cyan); }
.warn { background: rgba(255,140,0,0.08);   border-color: var(--accent2); } .warn .box-title { color: var(--accent2); }
.info { background: rgba(255,60,110,0.07);  border-color: var(--accent);  } .info .box-title { color: var(--accent); }
.good { background: rgba(110,231,183,0.07); border-color: var(--green);   } .good .box-title { color: var(--green); }

/* ── Tables ── */
.tbl { overflow-x: auto; margin: 18px 0; }
table { width: 100%; border-collapse: collapse; font-size: 0.86rem; }
th { background: var(--card); color: var(--muted); text-align: left; padding: 9px 14px; border-bottom: 1px solid var(--border); font-weight: 600; font-size: 0.76rem; text-transform: uppercase; letter-spacing: 0.05em; white-space: nowrap; }
td { padding: 10px 14px; border-bottom: 1px solid var(--border); color: #c4c4dc; vertical-align: top; line-height: 1.6; }
tr:last-child td { border-bottom: none; }
td code { background: rgba(255,255,255,0.07); padding: 1px 6px; border-radius: 4px; font-family: 'Courier New', monospace; font-size: 0.82em; color: var(--cyan); }

/* ── Inline Code ── */
code { background: rgba(255,255,255,0.08); padding: 2px 6px; border-radius: 4px; font-family: 'Courier New', monospace; font-size: 0.83em; color: var(--cyan); }

/* ── Param Block ── */
.param-grid { display: grid; grid-template-columns: auto 1fr; gap: 0; background: var(--card); border: 1px solid var(--border); border-radius: 10px; overflow: hidden; margin: 16px 0; }
.param-row { display: contents; }
.param-row:hover .pk, .param-row:hover .pv { background: rgba(255,255,255,0.02); }
.pk { padding: 10px 14px; border-bottom: 1px solid var(--border); font-family: 'Courier New', monospace; font-size: 0.82rem; color: var(--cyan); white-space: nowrap; font-weight: 600; }
.pv { padding: 10px 14px; border-bottom: 1px solid var(--border); font-size: 0.86rem; color: #c4c4dc; border-left: 1px solid var(--border); }
.param-row:last-child .pk, .param-row:last-child .pv { border-bottom: none; }
.pv .default { color: var(--muted); font-size: 0.78rem; margin-top: 3px; }

/* ── UI Mockup ── */
.ui-mock { background: var(--card); border: 1px solid var(--border); border-radius: 12px; overflow: hidden; margin: 18px 0; }
.ui-mock-bar { background: rgba(255,255,255,0.04); padding: 9px 14px; display: flex; align-items: center; gap: 6px; border-bottom: 1px solid var(--border); }
.ui-dot { width: 10px; height: 10px; border-radius: 50%; }
.ui-dot.r{background:#ff5f57} .ui-dot.y{background:#febc2e} .ui-dot.g{background:#28c840}
.ui-mock-label { font-size: 0.7rem; color: var(--muted); margin-left: 6px; }
.ui-mock-body { padding: 18px; }
.ui-row { display: flex; align-items: center; gap: 10px; padding: 9px 12px; background: rgba(255,255,255,0.03); border: 1px solid var(--border); border-radius: 8px; margin-bottom: 7px; font-size: 0.85rem; }
.ui-row.highlight { border-color: rgba(99,102,241,0.4); background: rgba(99,102,241,0.06); }
.ui-row .label { color: var(--muted); font-size: 0.78rem; min-width: 80px; }
.ui-row .val { color: var(--text); font-weight: 500; }
.ui-row .tag { font-size: 0.68rem; padding: 2px 8px; border-radius: 100px; margin-left: auto; }
.tag-green  { background: rgba(110,231,183,0.1); border: 1px solid rgba(110,231,183,0.25); color: var(--green); }
.tag-purple { background: rgba(165,180,252,0.1); border: 1px solid rgba(165,180,252,0.25); color: var(--purple); }
.tag-cyan   { background: rgba(37,244,238,0.1);  border: 1px solid rgba(37,244,238,0.25);  color: var(--cyan); }
.tag-red    { background: rgba(255,60,110,0.1);  border: 1px solid rgba(255,60,110,0.25);  color: var(--accent); }

/* ── Effect Cards (tutorial built-in effects grid) ── */
.effect-list { display: grid; grid-template-columns: repeat(4,1fr); gap: 10px; margin: 16px 0; }
.eff-card { background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 14px 10px; text-align: center; font-size: 0.82rem; }
.eff-card .emoji  { font-size: 1.8rem; display: block; margin-bottom: 6px; }
.eff-card .name   { font-weight: 600; color: var(--text); margin-bottom: 2px; }
.eff-card .aliases{ color: var(--muted); font-size: 0.68rem; margin-bottom: 6px; line-height: 1.4; }
.eff-card .anim   { font-size: 0.65rem; padding: 2px 7px; border-radius: 100px; display: inline-block; }
.af  { background: rgba(99,102,241,0.1); border: 1px solid rgba(99,102,241,0.2); color: var(--purple); }
.ab  { background: rgba(255,60,110,0.1); border: 1px solid rgba(255,60,110,0.2); color: var(--accent); }
.afl { background: rgba(251,191,36,0.1); border: 1px solid rgba(251,191,36,0.2); color: var(--yellow); }
.ap  { background: rgba(110,231,183,0.1);border: 1px solid rgba(110,231,183,0.2);color: var(--green); }
.al  { background: rgba(37,244,238,0.1); border: 1px solid rgba(37,244,238,0.2); color: var(--cyan); }

/* ── Numbered Callout ── */
.num-block { display: flex; gap: 14px; align-items: flex-start; margin: 14px 0; }
.num-circle { width: 28px; height: 28px; border-radius: 50%; background: rgba(255,60,110,0.15); border: 1px solid rgba(255,60,110,0.3); color: var(--accent); display: flex; align-items: center; justify-content: center; font-size: 0.75rem; font-weight: 700; flex-shrink: 0; margin-top: 2px; }
.num-text { font-size: 0.9rem; color: #c4c4dc; padding-top: 4px; }

/* ── Anchor / Divider ── */
.anchor { display: block; height: 80px; margin-top: -80px; visibility: hidden; }
hr { border: none; border-top: 1px solid var(--border); margin: 32px 0; }

/* Plain list helper */
.plain-list { list-style: none; padding: 0; margin: 0 0 16px; }
.plain-list li { padding: 7px 0; border-bottom: 1px solid var(--border); font-size: 0.9rem; color: #c4c4dc; }
.plain-list li:last-child { border-bottom: none; }

/* ── Responsive ── */
@media (max-width: 768px) {
  .sidebar { display: none; }
  .content { padding: 28px 20px 60px; }
  .effect-list { grid-template-columns: repeat(2,1fr); }
}