/* AI Learning Studio production stylesheet */

:root {
  --site-surface: var(--als-surface);
  --site-surface-muted: var(--als-surface-muted);
  --site-text: var(--als-text-primary);
  --site-text-muted: var(--als-text-muted);
  --site-border: var(--als-border);
  --site-accent: var(--als-accent);
  --site-accent-hover: var(--als-accent-hover);
  --site-focus: var(--als-focus);
  --site-success: var(--als-success);
  --site-shadow: var(--als-shadow-sm);
  --site-shadow-strong: var(--als-shadow-md);
  --site-radius: var(--als-radius-lg);
  --site-radius-sm: var(--als-radius-sm);
  --site-radius-md: var(--als-radius-md);
  --site-page-width: min(100%, var(--als-content-max-width));
  color-scheme: light;
}

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

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

body {
  margin: 0;
  background: var(--als-background);
  color: var(--site-text);
  font-family: var(--als-font-family-sans);
  font-size: var(--als-font-size-md);
  font-weight: var(--als-font-weight-regular);
  line-height: var(--als-line-height-normal);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

img,
svg,
video,
canvas {
  display: block;
  max-width: 100%;
}

button,
input,
textarea,
select {
  font: inherit;
}

a {
  color: var(--site-accent);
  text-decoration-thickness: 0.09em;
  text-underline-offset: 0.15em;
}

a:hover {
  color: var(--site-accent-hover);
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--site-focus);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  inset-inline-start: var(--als-space-4);
  inset-block-start: var(--als-space-4);
  z-index: 1000;
  padding: var(--als-space-3) var(--als-space-4);
  border-radius: var(--site-radius-sm);
  background: var(--site-surface);
  color: var(--site-text);
  box-shadow: var(--site-shadow-strong);
  transform: translateY(-200%);
  transition: transform 120ms ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-shell {
  width: var(--site-page-width);
  margin-inline: auto;
  padding: var(--als-space-4);
}

.site-header {
  padding-block: var(--als-space-2) var(--als-space-4);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--als-space-4);
}

.site-brand {
  display: inline-flex;
  align-items: center;
  gap: var(--als-space-2);
  color: var(--site-text);
  font-size: var(--als-font-size-lg);
  font-weight: var(--als-font-weight-semibold);
  letter-spacing: -0.01em;
  text-decoration: none;
  transition: color 0.15s ease, opacity 0.15s ease;
}

.site-brand__icon {
  flex-shrink: 0;
  color: var(--site-accent, #2F6FED);
  transition: transform 0.2s ease, color 0.15s ease;
}

.site-brand:hover {
  color: var(--site-accent);
}

.site-brand:hover .site-brand__icon {
  transform: scale(1.1);
}

.site-nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: var(--als-space-2) var(--als-space-4);
  border: 1px solid var(--site-border);
  border-radius: var(--als-radius-pill);
  background: var(--site-surface);
  color: var(--site-text);
  cursor: pointer;
  transition: background-color 140ms ease, border-color 140ms ease, color 140ms ease;
}

.site-nav-toggle:hover {
  border-color: var(--site-accent);
  color: var(--site-accent);
}

.site-layout {
  display: grid;
  grid-template-columns: minmax(0, var(--als-navigation-width)) minmax(0, 1fr);
  gap: var(--als-space-8);
  align-items: start;
}

.site-navigation {
  position: sticky;
  top: var(--als-space-4);
  align-self: start;
  padding: var(--als-space-5);
  border: 1px solid var(--site-border);
  border-radius: var(--site-radius);
  background: rgba(255, 255, 255, 0.72);
  box-shadow: var(--site-shadow);
  backdrop-filter: blur(10px);
}

.navigation-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.navigation-item + .navigation-item {
  margin-top: var(--als-space-2);
}

.navigation-link {
  display: block;
  padding: var(--als-space-3) var(--als-space-4);
  border-radius: var(--als-radius-md);
  color: var(--site-text);
  text-decoration: none;
  transition: background-color 140ms ease, color 140ms ease;
}

.navigation-link:hover {
  background: var(--site-surface-muted);
  color: var(--site-accent);
}

.navigation-item.is-current .navigation-link {
  background: rgba(53, 92, 125, 0.10);
  color: var(--site-accent);
  font-weight: var(--als-font-weight-semibold);
}

.nav-label {
  display: block;
  font-weight: var(--als-font-weight-medium);
  color: inherit;
}

.nav-description {
  display: block;
  font-size: var(--als-font-size-xs);
  color: var(--site-text-muted, var(--als-text-secondary, #666));
  margin-top: var(--als-space-1);
  line-height: var(--als-line-height-normal);
  font-weight: var(--als-font-weight-regular);
}

.sub-navigation-list {
  list-style: none;
  margin: var(--als-space-2) 0 0 0;
  padding-left: var(--als-space-3);
  border-left: 2px solid var(--site-border, #e0e0e0);
}

.sub-navigation-item {
  margin-top: var(--als-space-1);
}

.sub-navigation-link {
  display: block;
  padding: var(--als-space-1) var(--als-space-2);
  font-size: var(--als-font-size-xs);
  color: var(--site-text-secondary, #555);
  text-decoration: none;
  border-radius: var(--als-radius-sm);
  transition: background-color 140ms ease, color 140ms ease;
}

.sub-navigation-link:hover {
  background: var(--site-surface-muted);
  color: var(--site-accent);
}

.sub-navigation-item.is-current .sub-navigation-link {
  color: var(--site-accent);
  font-weight: var(--als-font-weight-semibold);
}

.site-main {
  min-width: 0;
}

.page-content {
  min-width: 0;
}

.page-intro,
.page-body,
.prompt-collection,
.prompt-builder,
.practice-timeline,
.page-not-found {
  border-radius: var(--site-radius);
}

.page-intro {
  padding: var(--als-space-8);
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid var(--site-border);
  box-shadow: var(--site-shadow);
  backdrop-filter: blur(10px);
}

.page-title {
  margin: 0;
  color: var(--site-text);
  font-size: clamp(var(--als-font-size-2xl), 3vw, 2.75rem);
  line-height: var(--als-line-height-tight);
  letter-spacing: -0.03em;
}

.page-description {
  max-width: 72ch;
  margin: var(--als-space-4) 0 0;
  color: var(--site-text-muted);
  font-size: var(--als-font-size-lg);
}

.page-body {
  padding: var(--als-space-6);
  margin-top: var(--als-space-6);
  background: rgba(255, 255, 255, 0.58);
  border: 1px solid rgba(215, 211, 204, 0.85);
  border-radius: var(--site-radius-md);
}

.page-body > :first-child {
  margin-top: 0 !important;
}

.page-body > * {
  max-width: 72ch;
}

.page-body > * + * {
  margin-top: var(--als-space-4);
}

.page-body h1,
.page-body h2,
.page-body h3 {
  margin-bottom: 0;
  color: var(--site-text);
  line-height: var(--als-line-height-tight);
  letter-spacing: -0.02em;
}

.page-body h1 {
  font-size: var(--als-font-size-2xl);
  margin-top: var(--als-space-12);
  margin-bottom: var(--als-space-4);
}

.page-body h2 {
  font-size: var(--als-font-size-xl);
  margin-top: var(--als-space-10);
  margin-bottom: var(--als-space-4);
}

.page-body h3 {
  font-size: var(--als-font-size-lg);
  margin-top: var(--als-space-8);
  margin-bottom: var(--als-space-3);
}

.page-body p,
.page-body li {
  color: var(--site-text);
}

.page-body ul,
.page-body ol {
  margin-top: var(--als-space-4);
  margin-bottom: 0;
  padding-inline-start: 1.25rem;
}

.page-body li + li {
  margin-top: var(--als-space-2);
}

.prompt-collection {
  margin-top: var(--als-space-6);
  padding: 0;
  border: none;
  background: transparent;
  box-shadow: none;
}

.prompt-item + .prompt-item {
  margin-top: var(--als-space-6);
}

.prompt-item {
  margin-top: var(--als-space-8);
  padding: var(--als-space-6);
  border: 1px solid rgba(215, 211, 204, 0.9);
  border-radius: var(--site-radius-md);
  background: var(--site-surface);
  box-shadow: var(--site-shadow);
}

.prompt-item__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--als-space-2);
  margin-bottom: var(--als-space-4);
}

.prompt-item__title {
  margin: 0;
  color: var(--site-text);
  font-size: var(--als-font-size-lg);
  line-height: var(--als-line-height-tight);
}

.prompt-item__header .prompt-item__description {
  width: 100%;
}

.prompt-item__description {
  margin: 0;
  color: var(--site-text-muted);
}

.prompt-item__content {
  margin: 0;
  padding: var(--als-space-4);
  border-radius: var(--site-radius-md);
  background: var(--site-surface-muted); /* 은은한 프롬프트 구역 전용 톤 백그라운드 */
  color: var(--site-text);
  white-space: pre-wrap;
  overflow: auto;
  word-break: break-word;
}

.prompt-item__content code {
  display: block;
  white-space: inherit;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  font-size: var(--als-font-size-sm);
  line-height: var(--als-line-height-relaxed);
}

/* ===== Inline Tag Chip (itc) - Native Site Theme Palette ===== */
.itc {
  display: inline;
  margin: 0 1px;
  padding: 2px 7px;
  border-bottom: 2px solid var(--site-accent);
  border-radius: 4px;
  background: rgba(45, 64, 54, 0.08);
  color: var(--site-text);
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.04);
  transition: all 120ms ease-in-out;
}

.itc:hover {
  background: rgba(45, 64, 54, 0.16);
  color: var(--site-accent-hover, var(--site-accent));
}

.itc-arrow {
  font-style: normal;
  font-size: 0.82em;
  color: var(--site-accent);
  opacity: 0.85;
  margin-left: 2px;
}

/* ===== itc Dropdown Panel (appended to body) - Native Floating Card ===== */
.itc-dropdown {
  position: fixed;
  z-index: 9999;
  min-width: 240px;
  max-width: 380px;
  padding: 8px 0;
  border: 1px solid var(--site-border, #d5d0c7);
  border-radius: 10px;
  background: var(--site-surface, #ffffff);
  box-shadow: 0 16px 36px -6px rgba(15, 23, 42, 0.16), 0 6px 12px -4px rgba(15, 23, 42, 0.06);
  animation: itcFadeIn 130ms cubic-bezier(0.16, 1, 0.3, 1);
}

/* 3x Wide Resizable Text Area Dropdown */
.itc-dropdown--text {
  min-width: 480px;
  max-width: 90vw;
  width: fit-content;
  padding: 14px;
}

@keyframes itcFadeIn {
  from { opacity: 0; transform: translateY(-6px) scale(0.98); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

.itc-dropdown__option {
  display: block;
  width: 100%;
  padding: 9px 16px;
  border: none;
  background: transparent;
  color: var(--site-text, #2d312e);
  font-size: 14px;
  font-weight: 500;
  text-align: left;
  cursor: pointer;
  transition: background 100ms, color 100ms;
}

.itc-dropdown__option:hover,
.itc-dropdown__option:focus {
  background: rgba(45, 64, 54, 0.08);
  color: var(--site-accent);
  outline: none;
}

.itc-dropdown__option--active {
  color: var(--site-accent);
  font-weight: 700;
  background: rgba(45, 64, 54, 0.08);
}

.itc-dropdown__checkbox-item {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 8px 16px;
  color: var(--site-text, #2d312e);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  user-select: none;
  transition: background 100ms;
}

.itc-dropdown__checkbox-item:hover {
  background: rgba(45, 64, 54, 0.08);
  color: var(--site-accent);
}

.itc-dropdown__checkbox-item input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--site-accent);
  cursor: pointer;
}

.itc-dropdown__divider {
  height: 1px;
  margin: 6px 12px;
  background: var(--site-border, #e2e8f0);
}

.itc-dropdown__input-wrap {
  padding: 6px 12px 4px;
}

.itc-dropdown__input {
  width: 100%;
  padding: 8px 12px;
  border: 1.5px solid var(--site-border, #d5d0c7);
  border-radius: 6px;
  font-size: 14px;
  color: var(--site-text, #2d312e);
  outline: none;
  transition: border-color 120ms, box-shadow 120ms;
}

.itc-dropdown__input:focus {
  border-color: var(--site-accent);
  box-shadow: 0 0 0 3px rgba(45, 64, 54, 0.15);
}

/* Resizable 3x Wide Text Area - Parent container grows seamlessly */
.itc-dropdown__textarea {
  display: block;
  box-sizing: border-box;
  width: 480px;
  min-width: 340px;
  max-width: 82vw;
  min-height: 110px;
  padding: 12px;
  border: 1.5px solid var(--site-border, #d5d0c7);
  border-radius: 8px;
  font-size: 14px;
  line-height: 1.55;
  color: var(--site-text, #2d312e);
  outline: none;
  resize: both;
  overflow: auto;
  transition: border-color 120ms, box-shadow 120ms;
}

.itc-dropdown__textarea:focus {
  border-color: var(--site-accent);
  box-shadow: 0 0 0 3px rgba(45, 64, 54, 0.15);
}

.itc-dropdown__input-hint {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  color: var(--site-text-muted, #64748b);
}

/* ========================================= */
/* [DO NOT MODIFY] Core Prompt Layout Structure */
/* ========================================= */
.prompt-item__preview-section {
  margin-top: var(--als-space-6);
  padding-top: var(--als-space-5);
  border-top: 1px dashed var(--site-border);
}

.prompt-item__preview-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--als-space-3);
}

.prompt-item__title--preview {
  margin: 0;
  font-size: var(--als-font-size-base);
  font-weight: 700;
  color: #0f172a;
}

.prompt-item__preview-box {
  margin: 0;
  padding: var(--als-space-4);
  border: 1px solid #e2e8f0;
  border-radius: var(--site-radius-md);
  background: #f8fafc;
  color: #1e293b;
  white-space: pre-wrap;
  word-break: break-word;
}
/* ========================================= */
/* END [DO NOT MODIFY] Core Prompt Layout Structure */
/* ========================================= */

.prompt-item__preview-code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  font-size: var(--als-font-size-sm);
  line-height: var(--als-line-height-relaxed);
}

.prompt-item__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--als-space-3);
  margin-top: var(--als-space-4);
}

.prompt-item__copy-button {
  min-height: 44px;
  padding: var(--als-space-2) var(--als-space-4);
  border: 1px solid var(--site-accent);
  border-radius: var(--site-radius-md);
  background: var(--site-accent);
  color: #ffffff;
  cursor: pointer;
  transition: background-color 140ms ease, border-color 140ms ease, transform 140ms ease;
}

.prompt-item__copy-button:hover {
  background: var(--site-accent-hover);
  border-color: var(--site-accent-hover);
}

.prompt-item__copy-button:active {
  transform: translateY(1px);
}

.prompt-item__copy-status {
  color: var(--site-success);
}

.prompt-item__ai-badges {
  display: inline-flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--als-space-2);
  margin-bottom: 0;
}

.badge-ai {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.25rem 0.65rem;
  border-radius: var(--site-radius-md);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  border: 1px solid transparent;
}

.badge-ai--chatgpt {
  background: rgba(16, 163, 127, 0.1);
  color: #0d8a6a;
  border-color: rgba(16, 163, 127, 0.25);
}

.badge-ai--gemini {
  background: rgba(26, 115, 232, 0.1);
  color: #1557b0;
  border-color: rgba(26, 115, 232, 0.25);
}

.badge-ai--claude {
  background: rgba(217, 119, 87, 0.1);
  color: #c25330;
  border-color: rgba(217, 119, 87, 0.25);
}

.badge-ai--universal {
  background: rgba(71, 85, 105, 0.1);
  color: #475569;
  border-color: rgba(71, 85, 105, 0.25);
}

.prompt-item__external-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  min-height: 44px;
  padding: var(--als-space-2) var(--als-space-3);
  border: 1px solid var(--site-border);
  border-radius: var(--site-radius-md);
  background: #ffffff;
  color: var(--site-text);
  font-size: 0.88rem;
  font-weight: 500;
  text-decoration: none;
  transition: all 140ms ease;
}

.prompt-item__external-link:hover {
  border-color: var(--site-accent);
  color: var(--site-accent);
  background: #f8fafc;
}

.prompt-item__source {
  margin-top: var(--als-space-5);
  padding: var(--als-space-3) var(--als-space-4);
  border-radius: var(--site-radius-md);
  background: #f8fafc;
  border: 1px solid var(--site-border);
  color: var(--site-text-muted);
  font-size: 0.86rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.prompt-item__source-label {
  font-weight: 650;
  color: var(--site-text);
}

.prompt-builder {
  margin-top: var(--als-space-6);
  padding: var(--als-space-8);
  border: 1px solid var(--site-border);
  background: rgba(255, 255, 255, 0.72);
}

.image-slider {
  margin-top: var(--als-space-6);
  padding: var(--als-space-4);
  border: 1px solid var(--site-border);
  border-radius: var(--site-radius-md);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(245, 248, 252, 0.98));
  box-shadow: var(--site-shadow-soft);
}

.image-slider__wrapper {
  position: relative;
  width: 100%;
}

.image-slider__viewport {
  position: relative;
  width: 100%;
  overflow: hidden;
  border-radius: var(--site-radius-md);
}

.image-slider__track {
  display: flex;
  width: 100%;
  transition: transform 0.35s cubic-bezier(0.25, 1, 0.5, 1);
  will-change: transform;
}

.image-slider__slide {
  flex: 0 0 100%;
  width: 100%;
  min-width: 100%;
  box-sizing: border-box;
  display: block;
  padding: 0;
  border-radius: var(--site-radius-md);
  background: transparent;
}

.image-slider__slide.is-active {
  outline: 0;
}

.image-slider__frame {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: clamp(16rem, 48vw, 28rem);
  overflow: hidden;
  border-radius: calc(var(--site-radius-md) - 4px);
  background: transparent;
}

.image-slider__image {
  display: block;
  width: auto;
  max-width: 100%;
  max-height: clamp(16rem, 48vw, 28rem);
  height: auto;
  object-fit: contain;
  border-radius: calc(var(--site-radius-md) - 4px);
}

.image-slider__arrow {
  appearance: none;
  -webkit-appearance: none;
  position: absolute;
  top: 50%;
  z-index: 10;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  margin-top: -1.125rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid rgba(25, 34, 55, 0.1);
  color: var(--site-text);
  font-size: 1.2rem;
  text-decoration: none;
  box-shadow: 0 10px 24px rgba(25, 34, 55, 0.12);
}

.image-slider__arrow--prev {
  left: var(--als-space-3);
}

.image-slider__arrow--next {
  right: var(--als-space-3);
}

.image-slider__arrow:hover,
.image-slider__arrow:focus-visible {
  background: #fff;
  color: var(--site-accent);
}

.image-slider__arrow.is-active {
  background: #fff;
  color: var(--site-accent);
}

.image-slider__arrow:focus-visible {
  outline: 2px solid var(--site-accent);
  outline-offset: 2px;
}

.image-slider__nav {
  display: flex;
  justify-content: center;
  gap: var(--als-space-2);
  margin: var(--als-space-4) 0 0;
  padding: 0;
  list-style: none;
}

.image-slider__nav-link {
  appearance: none;
  -webkit-appearance: none;
  border: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 0.9rem;
  height: 0.9rem;
  border-radius: 999px;
  color: transparent;
  overflow: hidden;
  text-decoration: none;
  background: rgba(71, 85, 105, 0.28);
}

.image-slider__nav-link:hover,
.image-slider__nav-link:focus-visible {
  background: var(--site-accent);
}

.image-slider__nav-link.is-active {
  background: var(--site-accent);
  transform: scale(1.15);
}

.prompt-builder__fields,
.practice-timeline__list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.prompt-field + .prompt-field,
.timeline-step + .timeline-step {
  margin-top: var(--als-space-5);
}

.prompt-field {
  padding: var(--als-space-5);
  border: 1px solid var(--site-border);
  border-radius: var(--site-radius-md);
  background: var(--site-surface);
}

.prompt-field__label,
.timeline-step__title {
  margin: 0;
  font-size: var(--als-font-size-lg);
  line-height: var(--als-line-height-tight);
}

.prompt-field__description,
.prompt-field__placeholder,
.prompt-field__requirement,
.timeline-step__description,
.timeline-step__result {
  margin: var(--als-space-3) 0 0;
  color: var(--site-text-muted);
}

.prompt-field__select {
  width: 100%;
  margin-top: var(--als-space-3);
  padding: var(--als-space-3) 2.5rem var(--als-space-3) var(--als-space-4);
  border: 1px solid var(--site-border);
  border-radius: var(--site-radius-sm);
  background-color: #ffffff;
  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='%23475569' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  background-size: 1rem;
  color: var(--site-text);
  font-size: var(--als-font-size-base);
  line-height: var(--als-line-height-normal);
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  cursor: pointer;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.prompt-field__select:focus {
  outline: none;
  border-color: var(--site-accent, #2f6fed);
  box-shadow: 0 0 0 3px rgba(47, 111, 237, 0.15);
}

.prompt-field__custom-input-wrapper {
  margin-top: var(--als-space-3);
}

.prompt-field__custom-input-wrapper.is-hidden {
  display: none;
}


.prompt-field__input {
  width: 100%;
  margin-top: var(--als-space-3);
  padding: var(--als-space-3) var(--als-space-4);
  border: 1px solid var(--site-border);
  border-radius: var(--site-radius-sm);
  background: #ffffff;
  color: var(--site-text);
  font-size: var(--als-font-size-base);
  line-height: var(--als-line-height-normal);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.prompt-field__input:focus {
  outline: none;
  border-color: var(--site-accent, #2f6fed);
  box-shadow: 0 0 0 3px rgba(47, 111, 237, 0.15);
}

.prompt-builder__actions {
  margin-top: var(--als-space-6);
  text-align: center;
}

.prompt-builder__generate-btn {
  min-height: 48px;
  padding: var(--als-space-3) var(--als-space-6);
  border: 1px solid var(--site-accent);
  border-radius: var(--als-radius-pill);
  background: var(--site-accent);
  color: #ffffff;
  font-weight: 600;
  font-size: var(--als-font-size-base);
  cursor: pointer;
  transition: background-color 140ms ease, transform 140ms ease;
}

.prompt-builder__generate-btn:hover {
  background: var(--site-accent-hover);
}

.prompt-builder__result {
  margin-top: var(--als-space-6);
  padding: var(--als-space-6);
  border: 1px solid var(--site-accent);
  border-radius: var(--site-radius-md);
  background: #ffffff;
}

.prompt-builder__result.is-hidden {
  display: none;
}

.prompt-builder__result-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--als-space-3);
}

.prompt-builder__result-header .prompt-item__ai-badges {
  margin-top: 0;
  margin-bottom: 0;
}

.prompt-builder__result-title {
  margin: 0;
  font-size: var(--als-font-size-xl);
}

.prompt-builder__result-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--als-space-3);
  align-items: center;
  margin-top: var(--als-space-4);
}

.practice-timeline {
  margin-top: var(--als-space-6);
  padding: var(--als-space-8);
  border: 1px solid var(--site-border);
  background: rgba(255, 255, 255, 0.72);
}

.timeline-step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--als-space-4);
  padding: var(--als-space-5);
  border: 1px solid var(--site-border);
  border-radius: var(--site-radius-md);
  background: var(--site-surface);
}

.timeline-step__number {
  margin: 0;
  min-width: 2.25rem;
  min-height: 2.25rem;
  display: inline-grid;
  place-items: center;
  border-radius: var(--als-radius-pill);
  background: var(--site-surface-muted);
  color: var(--site-accent);
  font-weight: var(--als-font-weight-semibold);
}

.timeline-step__content {
  min-width: 0;
}

.timeline-step__result {
  display: flex;
  flex-wrap: wrap;
  gap: var(--als-space-2);
}

.timeline-step__result-label {
  color: var(--site-text);
  font-weight: var(--als-font-weight-semibold);
}

.site-footer {
  margin-top: var(--als-space-8);
  padding: var(--als-space-5) var(--als-space-2) var(--als-space-8);
  color: var(--site-text-muted);
  text-align: center;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

html.js .site-nav-toggle {
  display: inline-flex;
}

@media (max-width: 899px) {
  .site-shell {
    padding-inline: var(--als-space-3);
  }

  .site-layout {
    grid-template-columns: 1fr;
    gap: var(--als-space-4);
  }

  .site-navigation {
    position: static;
    padding: var(--als-space-4);
  }

  html.js[data-navigation-state="closed"] .site-navigation {
    display: none;
  }

  html.js[data-navigation-state="open"] .site-navigation {
    display: block;
  }
}

@media (min-width: 900px) {
  html.js .site-nav-toggle {
    display: none;
  }
}

@media (min-width: 1024px) {
  .page-content {
    display: grid;
    gap: var(--als-space-6);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}

@media print {
  .skip-link,
  .site-nav-toggle,
  .prompt-item__actions {
    display: none !important;
  }

  .site-shell {
    width: 100%;
    padding: 0;
  }

  .site-header,
  .site-navigation,
  .page-intro,
  .page-body,
  .prompt-collection,
  .prompt-item,
  .prompt-builder,
  .practice-timeline {
    box-shadow: none;
  }
}

/* Prompt Field Help Button (?) & Learning Modal Popups */
.prompt-field__label {
  display: flex;
  align-items: center;
  gap: var(--als-space-2);
}

.prompt-field__help-btn {
  display: inline-grid;
  place-items: center;
  width: 22px;
  height: 22px;
  padding: 0;
  border: 1px solid var(--site-border, #d7d3cc);
  border-radius: 50%;
  background: var(--site-surface, #ffffff);
  color: var(--site-accent, #2f6fed);
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.15s ease, background-color 0.15s ease, border-color 0.15s ease;
}

.prompt-field__help-btn:hover {
  transform: scale(1.12);
  background: var(--site-accent, #2f6fed);
  color: #ffffff;
  border-color: var(--site-accent, #2f6fed);
}

/* Modal Popups */
.als-modal-bg {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--als-space-4);
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(4px);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s ease, visibility 0.2s ease;
}

.als-modal-bg.is-visible {
  opacity: 1;
  visibility: visible;
}

.als-modal {
  width: min(520px, 100%);
  max-height: 85vh;
  overflow-y: auto;
  padding: var(--als-space-6);
  background: var(--site-surface, #ffffff);
  border: 1px solid var(--site-border, #e2e8f0);
  border-radius: var(--site-radius-md, 16px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
  transform: translateY(12px) scale(0.98);
  transition: transform 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.als-modal-bg.is-visible .als-modal {
  transform: translateY(0) scale(1);
}

.als-modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--als-space-4);
  padding-bottom: var(--als-space-3);
  border-bottom: 1px solid var(--site-border, #e2e8f0);
}

.als-modal__title-group {
  display: flex;
  align-items: center;
  gap: var(--als-space-2);
}

.als-modal__badge {
  font-size: 12px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 12px;
  background: rgba(47, 111, 237, 0.1);
  color: var(--site-accent, #2f6fed);
}

.als-modal__title {
  margin: 0;
  font-size: var(--als-font-size-lg, 18px);
  font-weight: 700;
  color: var(--site-text);
}

.als-modal__close-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: none;
  border-radius: 50%;
  background: #f1f5f9;
  color: #64748b;
  font-size: 20px;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}

.als-modal__close-btn:hover {
  background: #e2e8f0;
  color: #0f172a;
}

.als-modal__body {
  display: flex;
  flex-direction: column;
  gap: var(--als-space-4);
}

.als-modal__section h4 {
  margin: 0 0 var(--als-space-2) 0;
  font-size: var(--als-font-size-sm, 14px);
  font-weight: 700;
  color: var(--site-text);
}

.als-modal__section p {
  margin: 0;
  font-size: 14px;
  line-height: 1.6;
  color: #475569;
}

/* ===== Individual Step Rounded Box Cards (Full Width) & Flow Arrow ===== */
.page-content--static-prompt .page-body,
.page-content--landing .page-body,
.page-content--collection .page-body,
.page-content--practice-timeline .page-body,
.page-content--prompt-builder .page-body {
  background: transparent !important;
  border: none !important;
  box-shadow: none !important;
  padding: 0 !important;
  width: 100% !important;
  max-width: none !important;
}

.page-content--static-prompt .page-body > *,
.page-content--landing .page-body > *,
.page-content--collection .page-body > *,
.page-content--practice-timeline .page-body > *,
.page-content--prompt-builder .page-body > * {
  max-width: none !important;
}

.practice-step-card {
  display: block;
  width: 100% !important;
  max-width: none !important;
  box-sizing: border-box !important;
  background: var(--als-surface, #ffffff) !important;
  border: 1px solid var(--als-border, #d7d3cc) !important;
  border-radius: 16px !important;
  padding: 2rem 2.25rem !important;
  margin: 1rem 0 !important;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04) !important;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}



.practice-step-card:hover {
  border-color: #cbd5e1 !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.06) !important;
}

.practice-step-card h2 {
  display: flex !important;
  align-items: center !important;
  gap: 10px !important;
  margin-top: 0 !important;
  padding-bottom: 0.75rem !important;
  border-bottom: 2px solid var(--als-accent, #355c7d) !important;
  font-size: 1.4rem !important;
  color: var(--als-text-primary, #202124) !important;
}

.practice-step-card h2::before {
  content: "" !important;
  display: inline-block !important;
  width: 4px !important;
  height: 1.1em !important;
  background: var(--als-accent, #355c7d) !important;
  border-radius: 2px !important;
  flex-shrink: 0 !important;
}

.practice-step-card > :first-child,
.practice-step-card > h2:first-child,
.practice-step-card > h3:first-child,
.practice-step-card > h4:first-child {
  margin-top: 0 !important;
}

.practice-step-card h3 {
  color: var(--als-accent, #355c7d) !important;
  font-size: 1.25rem !important;
  margin-top: 2.75rem !important;
  margin-bottom: 0.75rem !important;
}

.practice-step-card h3 + h4 {
  margin-top: 0.35rem !important;
  margin-bottom: 1rem !important;
  color: var(--als-text-primary, #202124) !important;
  font-size: 1rem !important;
  font-weight: 600 !important;
}

.step-flow-arrow {
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  width: 44px !important;
  height: 44px !important;
  margin: 1.75rem auto !important;
  border-radius: 50% !important;
  background: #eff6ff !important;
  border: 2px solid #bfdbfe !important;
  color: #2563eb !important;
  font-size: 22px !important;
  font-weight: 800 !important;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.15) !important;
  user-select: none !important;
}

/* ===== Fix: Prompt Builder - Combine Last Card and Form (CSS Hack) ===== */
@media (min-width: 1024px) {
  .page-content--prompt-builder {
    gap: 0 !important; /* 강제 분리 요인 제거 */
  }
  .page-content--prompt-builder > * + * {
    margin-top: var(--als-space-6); /* gap 대신 margin-top 부여 */
  }
}

/* 폼 영역은 위(본문 마지막 카드)와 붙어야 하므로 마진 제거 */
.page-content--prompt-builder .prompt-builder {
  margin-top: 0 !important;
  border-top-left-radius: 0;
  border-top-right-radius: 0;
  border-top: 1px dashed var(--als-border, #d7d3cc);
  background: var(--als-surface, #ffffff);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04);
}

/* 본문의 하단 여백 제거 */
.page-content--prompt-builder .page-body {
  margin-bottom: 0 !important;
}

/* 본문 내 마지막 카드의 하단 모서리와 테두리 제거하여 폼과 결합되게 만듦 */
.page-content--prompt-builder .page-body .practice-step-card:last-child {
  margin-bottom: 0 !important;
  border-bottom-left-radius: 0 !important;
  border-bottom-right-radius: 0 !important;
  border-bottom: none !important;
}