/* AWC Workshop · Components (dark base, AWC brand + Fastcampus rhythm) */

/* ==== Layout ==== */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: var(--container-pad);
  padding-right: var(--container-pad);
}
.container--narrow { max-width: var(--content-max); }

.section {
  padding-top: var(--s-9);
  padding-bottom: var(--s-9);
}
.section--tight { padding-top: var(--s-8); padding-bottom: var(--s-8); }

/* Section background tiers (the rhythm) */
.bg-base     { background: var(--bg); }
.bg-elevated { background: var(--bg-elevated); }
.bg-surface  { background: var(--surface); }

/* Card-news pattern — top fade + central light (matches awc/content body slide pages 2-9) */
.bg-wash {
  position: relative;
  background: var(--bg);
  overflow: hidden;
}
.bg-wash > * { position: relative; z-index: 1; }

/* Soft-grad simplified — gradient removed to reduce repetition; kept as elevated tier */
.bg-soft-grad {
  background: var(--bg-elevated);
}

.stack > * + * { margin-top: var(--s-4); }
.stack-sm > * + * { margin-top: var(--s-2); }
.stack-lg > * + * { margin-top: var(--s-6); }
.stack-xl > * + * { margin-top: var(--s-7); }

.row { display: flex; gap: var(--s-3); align-items: center; flex-wrap: wrap; }
.row-between { display: flex; justify-content: space-between; align-items: center; gap: var(--s-4); flex-wrap: wrap; }

.grid { display: grid; gap: var(--s-4); }
.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: var(--s-5); }
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: var(--s-4); }
.grid-4 { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: var(--s-4); }

/* ==== Typography ==== */
.display {
  font-size: clamp(28px, 4.4vw, var(--fs-display));
  line-height: var(--lh-tight);
  letter-spacing: var(--tracking-display);
  font-weight: var(--fw-bold);
  color: var(--fg);
  text-wrap: balance;
}
.h1 {
  font-size: clamp(22px, 3vw, var(--fs-h1));
  line-height: 1.25;
  letter-spacing: var(--tracking-h1);
  font-weight: var(--fw-bold);
  color: var(--fg);
  text-wrap: balance;
}
.h2 { font-size: var(--fs-h2); line-height: var(--lh-snug); font-weight: var(--fw-bold); color: var(--fg); letter-spacing: var(--tracking-h2); text-wrap: balance; }

/* HEADLINE INDICATOR — page-wide single-use inline span on a heading core word.
   Per landing visual rules: 본문 단락은 그라디언트 X, 헤딩 핵심 단어 1회만 OK. */
.thesis-text {
  background: var(--grad-mark-bar);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  font-weight: 800;        /* 700(bold) → 800(extrabold), 강조 단어 더 굵게 */
}
.h3 { font-size: var(--fs-h3); line-height: var(--lh-snug); font-weight: var(--fw-bold); color: var(--fg); letter-spacing: var(--tracking-h3); text-wrap: balance; }
.body  { font-size: var(--fs-body);  line-height: var(--lh-relaxed); color: var(--text-2); letter-spacing: var(--tracking-base); text-wrap: pretty; }
.small { font-size: var(--fs-small); line-height: var(--lh-base); color: var(--text-2); letter-spacing: var(--tracking-small); text-wrap: pretty; }
.caption { font-size: var(--fs-caption); line-height: var(--lh-base); color: var(--text-4); letter-spacing: 0; }
.mute { color: var(--text-3); }
.faint { color: var(--text-4); }
.fg-1 { color: var(--text-1); }
.fg { color: var(--fg); }

/* ==== Buttons ==== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--s-2);
  padding: 0 22px;
  height: 44px;
  font-size: var(--fs-body);
  font-weight: var(--fw-bold);
  border-radius: 6px;             /* sharper than card radius — ShareX pattern */
  border: 1px solid transparent;
  background: transparent;
  color: var(--fg);
  letter-spacing: var(--tracking-base);
  transition: transform var(--dur-1) var(--ease), opacity var(--dur-2) var(--ease), background var(--dur-2) var(--ease), border-color var(--dur-2) var(--ease);
  white-space: nowrap;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}
.btn:active { transform: scale(0.96); }
.btn:focus-visible { outline: 2px solid var(--fg); outline-offset: 3px; }

.btn--primary {
  background: rgba(255,255,255,0.05);
  color: var(--fg);
  border: 0;
  border-radius: 9999px;
  backdrop-filter: blur(20px) saturate(1.5);
  -webkit-backdrop-filter: blur(20px) saturate(1.5);
  box-shadow:
    inset 0 0 0 0.5px rgba(255,255,255,0.18),
    inset 0 0 2px 1px rgba(255,255,255,0.35),
    0 8px 28px rgba(0,0,0,0.45);
}
.btn--primary:hover {
  background: rgba(255,255,255,0.08);
  transform: translateY(-1px);
  box-shadow:
    inset 0 0 0 0.5px rgba(255,255,255,0.24),
    inset 0 0 2px 1px rgba(255,255,255,0.45),
    0 12px 36px rgba(0,0,0,0.55);
}
.btn--primary:active { transform: scale(0.96); }

.btn--secondary {
  background: var(--surface);
  color: var(--text-1);
  border-color: var(--border-default);
}
.btn--secondary:hover {
  background: var(--surface-hover);
  border-color: var(--border-strong);
}

.btn--ghost {
  background: transparent;
  color: var(--text-2);
  border-color: var(--border-default);
}
.btn--ghost:hover { color: var(--fg); border-color: var(--border-strong); }

/* Text link (replacement for secondary buttons) */
.text-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--text-2);
  font-size: var(--fs-small);
  font-weight: var(--fw-bold);
  padding: 6px 0;
  border-bottom: 1px solid var(--border-default);
  transition: color var(--dur-2) var(--ease), border-color var(--dur-2) var(--ease);
}
.text-link:hover { color: var(--fg); border-bottom-color: var(--fg); }
.text-link:focus-visible { outline: 2px solid var(--fg); outline-offset: 4px; border-radius: var(--r-1); }

/* Buttons — mobile defaults (full-width) */
.btn { width: 100%; }
.btn--sm { width: auto; height: 32px; padding: 0 12px; font-size: var(--fs-small); border-radius: var(--r-1); }
.btn--lg { height: 48px; padding: 0 22px; font-size: 15px; }

@media (min-width: 768px) {
  .btn { width: auto; }
  .btn--lg { height: 52px; padding: 0 28px; font-size: var(--fs-h3); }
}

/* ==== Card ==== */
.card {
  background: var(--surface);
  border-radius: var(--r-card);
  padding: var(--s-6);
  border: 1px solid var(--border-subtle);
}
.card--raised {
  background: var(--surface-raised);
  box-shadow:
    0 1px 0 rgba(255,255,255,0.04) inset,
    0 12px 40px rgba(0,0,0,0.30);
}
.card--flat   { background: var(--bg-elevated); border: 0; }
.card--hover  { transition: border-color var(--dur-2) var(--ease), background var(--dur-2) var(--ease); }
.card--hover:hover { border-color: var(--border-default); background: var(--surface-hover); }

/* ==== Pill / Tag ==== */
.pill {
  display: inline-flex;
  align-items: center;
  gap: var(--s-1);
  padding: 4px 10px;
  border-radius: var(--r-pill);
  border: 1px solid var(--border-default);
  font-size: var(--fs-caption);
  font-weight: var(--fw-medium);
  color: var(--text-2);
  background: var(--surface);
  white-space: nowrap;
  letter-spacing: var(--tracking-base);
}
.pill--outline {
  background: var(--bg);
  color: var(--fg);
  border: 1px solid var(--fg);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 2px 7px;
  border-radius: var(--r-tag);
  background: var(--surface);
  color: var(--text-3);
  font-size: var(--fs-caption);
  font-weight: var(--fw-medium);
  letter-spacing: var(--tracking-base);
}

/* ==== Checklist ==== */
.checklist { display: flex; flex-direction: column; gap: var(--s-3); }
.checklist-item {
  display: grid;
  grid-template-columns: 22px 1fr;
  gap: var(--s-3);
  align-items: start;
  font-size: var(--fs-body);
  line-height: var(--lh-snug);
  color: var(--text-1);
  text-wrap: pretty;
}
.checklist-item::before {
  content: "";
  width: 20px;
  height: 20px;
  margin-top: 3px;
  border-radius: var(--r-1);
  background: var(--fg);
  flex-shrink: 0;
  -webkit-mask: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'><path d='M5 10.5l3.2 3 7.3-8' fill='none' stroke='black' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'/></svg>") center/14px no-repeat;
          mask: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'><path d='M5 10.5l3.2 3 7.3-8' fill='none' stroke='black' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'/></svg>") center/14px no-repeat;
}

/* ==== FAQ ==== */
.faq-item { border-bottom: 1px solid var(--border-subtle); }
.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: var(--s-5) 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--s-4);
  font-size: var(--fs-h3);
  font-weight: var(--fw-bold);
  color: var(--fg);
  transition: color var(--dur-2) var(--ease);
}
.faq-item summary:hover { color: var(--fg); }
.faq-item summary:focus-visible { outline: 2px solid var(--fg); outline-offset: 3px; border-radius: var(--r-1); }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  font-size: 22px;
  line-height: 1;
  width: 24px;
  text-align: center;
  color: var(--text-3);
  transition: transform var(--dur-2) var(--ease), color var(--dur-2) var(--ease);
  transform-origin: center;
}
.faq-item[open] summary::after { transform: rotate(45deg); color: var(--fg); }
.faq-body {
  padding: 0 0 var(--s-5);
  color: var(--text-2);
  line-height: var(--lh-relaxed);
  max-width: 64ch;
  text-wrap: pretty;
}

/* ==== Compare — mobile-first (1col → 2col on tablet) ==== */
/* before / after를 분리된 카드로. after에 stroke·텍스트 weight·color로 차별화 */
.compare {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s-3);
}
.compare > div {
  padding: var(--s-5);
  background: var(--surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-card);
}
@media (min-width: 768px) {
  .compare { grid-template-columns: 1fr 1fr; gap: var(--s-4); }
  .compare > div { padding: var(--s-7); }
}
.compare-label {
  display: inline-block;
  padding: 3px 8px;
  font-size: 11px;
  font-weight: var(--fw-medium);
  border-radius: var(--r-tag);
  margin-bottom: var(--s-4);
  background: var(--bg);
  color: var(--text-3);
  letter-spacing: var(--tracking-base);
}
/* before — 살짝 sunken (inset shadow), surface 그대로. After와 톤 단계를 양쪽에서 벌림 */
.compare-before {
  background: var(--surface);
  box-shadow: inset 0 1px 0 rgba(0, 0, 0, 0.25);
}

/* after — 다층 차별화: raised surface + strong stroke + 풍부한 ambient halo (두 위치)
   + elevation shadow + 텍스트 한 단 위. Top strip 같은 marker 패턴은 사용 X. */
.compare-after {
  position: relative;
  background: var(--surface-raised);
  border-color: var(--border-strong);
  border-radius: var(--r-card);
  isolation: isolate;
  overflow: hidden;
  box-shadow:
    0 16px 40px rgba(0, 0, 0, 0.32),
    inset 0 1px 0 rgba(255, 255, 255, 0.05);
}
/* 코너 ambient halo — 두 위치(top-left, bottom-right)에서 light가 카드 가로질러 흐르는 톤 */
.compare-after::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background:
    radial-gradient(ellipse 50% 45% at 100% 100%, rgba(255,165,0,0.08), transparent 70%),
    radial-gradient(ellipse 45% 40% at 0% 0%, rgba(255,107,107,0.05), transparent 65%);
  pointer-events: none;
  z-index: 0;
}
.compare-after > * { position: relative; z-index: 1; }
.compare-after .compare-label {
  background: var(--fg);
  color: var(--bg);
  font-weight: var(--fw-bold);
  letter-spacing: var(--tracking-small);
}
.compare-after .body { color: var(--text-1); }
.compare-after .small.mute { color: var(--text-2); }
.compare-after .small.mute .fg-1 { color: var(--fg); font-weight: var(--fw-medium); }

/* ==== Curriculum row ==== */
.curri-row {
  display: grid;
  grid-template-columns: 60px 1fr auto;
  gap: var(--s-5);
  padding: var(--s-5) 0;
  border-bottom: 1px solid var(--border-subtle);
  align-items: baseline;
}
.curri-row:last-child { border-bottom: 0; }
.curri-mod {
  font-family: var(--font-num);
  font-size: var(--fs-small);
  color: var(--text-4);
  letter-spacing: 0.02em;
  font-variant-numeric: tabular-nums;
}
.curri-title { font-weight: var(--fw-bold); font-size: var(--fs-h3); color: var(--fg); }
.curri-meta { font-size: var(--fs-small); color: var(--text-4); font-family: var(--font-num); font-variant-numeric: tabular-nums; letter-spacing: 0.02em; }
.curri-desc { grid-column: 2 / 3; color: var(--text-3); font-size: var(--fs-small); margin-top: var(--s-2); max-width: 56ch; line-height: var(--lh-base); }

/* ==== Sticky CTA ==== */
.sticky-cta {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  background: rgba(10, 10, 10, 0.94);
  backdrop-filter: blur(12px);
  border-top: 1px solid var(--border-subtle);
  padding: var(--s-3) 0;
  padding-bottom: max(var(--s-3), env(safe-area-inset-bottom));
  z-index: 50;
}
.sticky-cta .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--s-4);
}
.sticky-cta-info { font-size: var(--fs-small); color: var(--text-3); }
.sticky-cta-info strong { color: var(--fg); font-weight: var(--fw-medium); }

/* ==== Metric (gradient number) ==== */
.metric { display: flex; flex-direction: column; gap: var(--s-2); }
.metric-num {
  font-size: 44px;
  font-weight: var(--fw-bold);
  line-height: 1;
  letter-spacing: var(--tracking-display);
  color: var(--fg);
  font-variant-numeric: tabular-nums;
}
.metric-num small {
  font-size: 16px;
  color: var(--text-3);
  margin-left: 6px;
  font-weight: var(--fw-medium);
  vertical-align: 6px;             /* optical lift to align with cap-height of 44px digit */
  font-variant-numeric: normal;
}
.metric-label { font-size: var(--fs-small); color: var(--text-3); }

/* ==== Hero meta (dot separator) ==== */
.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
  color: var(--text-4);
  font-size: var(--fs-small);
}
.hero-meta span { display: inline-flex; align-items: center; }
.hero-meta span + span::before {
  content: "";
  display: inline-block;
  width: 3px;
  height: 3px;
  margin-right: 16px;
  background: var(--text-4);
  border-radius: 50%;
}

/* ==== Promo banner (above top-nav) ==== */
.promo-banner {
  position: sticky;
  top: 0;
  z-index: 41;
  background: var(--surface);
  color: var(--text-1);
  border-bottom: 1px solid var(--border-subtle);
}
.promo-banner .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--s-4);
  padding-top: 9px;
  padding-bottom: 9px;
  font-size: var(--fs-small);
  font-weight: var(--fw-bold);
  letter-spacing: var(--tracking-base);
}
.promo-banner strong { font-weight: var(--fw-medium); }

.promo-banner .container .tnum { font-variant-numeric: tabular-nums; }

/* ==== Top nav (floating glass pill — base site alignment) ==== */
.top-nav {
  position: sticky;
  top: 50px;          /* sit beneath promo-banner with breathing room */
  z-index: 40;
  padding: var(--s-3) var(--s-4);
  pointer-events: none;        /* let pill itself catch clicks */
}
.top-nav .container {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--s-4);
  max-width: 720px;
  padding: 10px 18px;
  background: rgba(255, 255, 255, 0.04);
  backdrop-filter: blur(20px) saturate(1.5);
  -webkit-backdrop-filter: blur(20px) saturate(1.5);
  border-radius: 9999px;
  box-shadow:
    inset 0 0 0 0.5px rgba(255,255,255,0.12),
    inset 0 0 2px 1px rgba(255,255,255,0.18),
    0 12px 40px rgba(0,0,0,0.55);
  pointer-events: auto;
}
.top-nav-brand {
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  font-weight: var(--fw-medium);
  font-size: var(--fs-small);
  color: var(--fg);
  letter-spacing: var(--tracking-base);
}
.brand-mark {
  display: inline-block;
  width: 64px;
  height: auto;
  line-height: 0;
  color: var(--fg);
}
.brand-mark svg { display: block; width: 100%; height: auto; }
.brand-suffix {
  font-weight: var(--fw-medium);
  font-size: var(--fs-small);
  color: var(--text-2);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.top-nav-brand:focus-visible { outline: 2px solid var(--fg); outline-offset: 4px; border-radius: var(--r-1); }

/* Top nav layout */
.top-nav-brand { margin-right: auto; }
.brand-mark { width: 48px; }
.brand-suffix { display: none; }

/* Top nav CTA — always visible, short pill button */
.top-nav-cta {
  display: inline-flex;
  align-items: center;
  height: 34px;
  padding: 0 14px;
  border-radius: 9999px;
  background: rgba(255,255,255,0.06);
  color: var(--fg);
  font-size: 13px;
  font-weight: var(--fw-bold);
  letter-spacing: 0;
  white-space: nowrap;
  box-shadow: inset 0 0 0 0.5px rgba(255,255,255,0.18);
  transition: opacity var(--dur-2) var(--ease), transform var(--dur-1) var(--ease), background var(--dur-2) var(--ease);
  touch-action: manipulation;
}
.top-nav-cta:hover { background: rgba(255,255,255,0.10); }
.top-nav-cta:active { transform: scale(0.96); }
.top-nav-cta:focus-visible { outline: 2px solid var(--fg); outline-offset: 3px; }

@media (min-width: 768px) {
  .brand-mark { width: 64px; }
  .brand-suffix { display: inline; }
  .top-nav-cta { height: 38px; padding: 0 18px; font-size: 14px; }
}

/* Promo banner — mobile default */
.promo-banner .container { font-size: 11px; gap: var(--s-2); padding-top: 7px; padding-bottom: 7px; }
@media (min-width: 768px) {
  .promo-banner .container { font-size: var(--fs-small); padding-top: 9px; padding-bottom: 9px; }
}

/* Sticky CTA — mobile default */
.sticky-cta .container { gap: var(--s-2); }
.sticky-cta-info { font-size: 11px; line-height: 1.3; }
.sticky-cta-info strong { display: block; margin-bottom: 2px; }
.sticky-cta .btn { flex: 0 0 auto; height: 38px; padding: 0 14px; font-size: 13px; width: auto; }
@media (min-width: 768px) {
  .sticky-cta .container { gap: var(--s-4); }
  .sticky-cta-info { font-size: var(--fs-small); }
  .sticky-cta-info strong { display: inline; margin-bottom: 0; }
  .sticky-cta .btn { height: 44px; font-size: var(--fs-body); }
}

/* FAQ — mobile default */
.faq-item summary { padding: 18px 0; font-size: 15px; }
.faq-item summary::after { font-size: 20px; }
.faq-body { font-size: 14px; padding-bottom: 18px; }
@media (min-width: 768px) {
  .faq-item summary { padding: var(--s-5) 0; font-size: var(--fs-h3); }
  .faq-item summary::after { font-size: 22px; }
  .faq-body { font-size: var(--fs-body); padding-bottom: var(--s-5); }
}

/* Compare — mobile default */
.compare > div { padding: var(--s-5); }
@media (min-width: 768px) {
  .compare > div { padding: var(--s-7); }
}

/* Curriculum row — mobile default */
.curri-row { grid-template-columns: 44px 1fr auto; gap: var(--s-3); padding: var(--s-4) 0; }
.curri-title { font-size: 15px; }
.curri-desc { font-size: 13px; }
@media (min-width: 768px) {
  .curri-row { grid-template-columns: 60px 1fr auto; gap: var(--s-5); padding: var(--s-5) 0; }
  .curri-title { font-size: var(--fs-h3); }
  .curri-desc { font-size: var(--fs-small); }
}

/* Metric — mobile default */
.metric-num { font-size: 32px; }
.metric-num small { font-size: 13px; vertical-align: 4px; }
@media (min-width: 768px) {
  .metric-num { font-size: 44px; }
  .metric-num small { font-size: 16px; vertical-align: 6px; }
}

/* Hero meta dots — mobile default */
.hero-meta { font-size: 12px; gap: 4px 12px; }
.hero-meta span + span::before { margin-right: 12px; }
@media (min-width: 768px) {
  .hero-meta { font-size: var(--fs-small); gap: 6px 16px; }
  .hero-meta span + span::before { margin-right: 16px; }
}