/**
 * AILO Mungchi Hero & Product UI Stylesheet
 * 100% Pure CSS macOS Application Window Mockup
 * Source of Truth: docs/02_개발_명세서.md, docs/04_페이지_화면_명세서.md
 */

.mungchi-app-window {
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: 0 25px 50px -12px rgba(15, 23, 42, 0.18),
              0 0 0 1px rgba(15, 23, 42, 0.05);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  max-width: 640px;
  width: 100%;
  margin-inline: auto;
}

/* macOS Titlebar */
.app-titlebar {
  background: linear-gradient(180deg, #F8FAFC 0%, #F1F5F9 100%);
  border-bottom: 1px solid var(--color-divider);
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  position: relative;
  user-select: none;
}

.traffic-lights {
  display: flex;
  align-items: center;
  gap: 8px;
}

.traffic-light {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 1px solid rgba(0, 0, 0, 0.08);
}

.traffic-light--close { background-color: #FF5F56; }
.traffic-light--minimize { background-color: #FFBD2E; }
.traffic-light--maximize { background-color: #27C93F; }

.app-title {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-slate);
  letter-spacing: -0.01em;
}

/* App Body */
.app-body {
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  background-color: #FFFFFF;
}

/* Drag & Drop Zone */
.app-dropzone {
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-5) var(--space-4);
  text-align: center;
  background-color: var(--color-soft-cloud);
  transition: border-color var(--duration-fast), background-color var(--duration-fast);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
}

.app-dropzone:hover {
  border-color: var(--color-indigo);
  background-color: var(--color-indigo-mist);
}

.dropzone-icon {
  width: 44px;
  height: 44px;
  color: var(--color-indigo);
  stroke-width: 1.5;
}

.dropzone-title {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-midnight);
}

.dropzone-subtitle {
  font-size: 0.8125rem;
  color: var(--color-slate-gray);
}

/* Progress & Status */
.app-status-box {
  background-color: var(--color-soft-cloud);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
}

.status-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-2);
}

.status-filename {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-midnight);
}

.status-percent {
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-indigo);
}

.progress-track {
  width: 100%;
  height: 6px;
  background-color: var(--color-divider);
  border-radius: var(--radius-pill);
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  width: 78%;
  background: var(--gradient-signature);
  border-radius: var(--radius-pill);
  animation: progressPulse 2s ease-in-out infinite alternate;
}

@keyframes progressPulse {
  0% { opacity: 0.85; }
  100% { opacity: 1; }
}

@media (prefers-reduced-motion: reduce) {
  .progress-bar-fill {
    animation: none;
  }
}

/* Metrics & SafeSend Indicators */
.app-metrics-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-2);
}

.metric-pill {
  background-color: var(--color-cloud);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  text-align: center;
}

.metric-label {
  font-size: 0.6875rem;
  color: var(--color-slate-gray);
  text-transform: uppercase;
  margin-bottom: 2px;
}

.metric-val {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-midnight);
}

/* SafeSend Verified Banner */
.app-safesend-verified {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background-color: rgba(45, 212, 191, 0.1);
  border: 1px solid rgba(45, 212, 191, 0.3);
  border-radius: var(--radius-md);
  font-size: 0.8125rem;
  color: var(--color-mint-deep);
  font-weight: 500;
}

.safesend-icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

/* Accordion for Mungchi Features */
.feature-accordion {
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-top: var(--space-4);
}

.accordion-item {
  border-bottom: 1px solid var(--color-divider);
}

.accordion-item:last-child {
  border-bottom: none;
}

.accordion-trigger {
  width: 100%;
  padding: var(--space-4);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: var(--color-white);
  font-weight: 600;
  font-size: 1rem;
  text-align: left;
  min-height: 48px;
  transition: background-color var(--duration-fast);
}

.accordion-trigger:hover {
  background-color: var(--color-soft-cloud);
}

.accordion-icon {
  width: 18px;
  height: 18px;
  transition: transform var(--duration-fast);
}

.accordion-trigger[aria-expanded="true"] .accordion-icon {
  transform: rotate(180deg);
}

.accordion-panel {
  padding: var(--space-4);
  background-color: var(--color-soft-cloud);
  font-size: 0.9375rem;
  color: var(--color-slate);
  line-height: 1.6;
  display: none;
}

.accordion-panel.is-open {
  display: block;
}

/* ==========================================================================
   Moongchi Product Introduction Page Sections (01 ~ 08)
   ========================================================================== */

.moongchi-section {
  padding-block: clamp(4rem, 8vw, 7rem);
  position: relative;
}

.moongchi-section--light {
  background-color: var(--color-white);
}

.moongchi-section--light-alt {
  background-color: #F8FAFC;
}

.moongchi-section--dark {
  background-color: #0B0E14;
  color: #FFFFFF;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.moongchi-section-eyebrow {
  font-family: var(--font-accent, 'Gmarket Sans', sans-serif);
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-indigo);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: var(--space-3);
  display: inline-block;
}

.moongchi-section-eyebrow--sky {
  color: var(--color-sky);
}

.moongchi-section-title {
  font-family: var(--font-accent, 'Gmarket Sans', sans-serif);
  font-size: clamp(2.2rem, 4.5vw, 3.25rem);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.025em;
  color: var(--color-midnight);
  margin-bottom: var(--space-4);
}

.moongchi-section--dark .moongchi-section-title {
  color: #FFFFFF;
}

.moongchi-section-lead {
  font-size: 1.125rem;
  line-height: 1.7;
  color: var(--color-slate);
  max-width: 520px;
}

.moongchi-section--dark .moongchi-section-lead {
  color: rgba(255, 255, 255, 0.7);
}

/* Feature 2-Column Row */
.moongchi-grid-2col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: clamp(2rem, 6vw, 5rem);
}

.moongchi-visual-wrap {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  width: 100%;
  max-width: 600px;
  margin-inline: auto;
  background: transparent;
  padding: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.moongchi-visual-wrap img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 10;
  object-fit: contain;
  border-radius: var(--radius-lg);
  display: block;
  box-shadow: 0 16px 36px -10px rgba(15, 23, 42, 0.16), 0 0 0 1px rgba(15, 23, 42, 0.04);
}

.moongchi-section--dark .moongchi-visual-wrap img {
  box-shadow: 0 20px 44px -10px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(255, 255, 255, 0.08);
}

/* Section 03: Compatibility Cards */
.compatibility-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-5);
  margin-top: var(--space-8);
}

.compat-card {
  background-color: #151821;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 3vw, 2.25rem);
  transition: transform var(--duration-base) var(--ease-out), border-color var(--duration-base);
}

.compat-card:hover {
  transform: translateY(-4px);
  border-color: rgba(63, 81, 247, 0.4);
}

.compat-card-logo-wrap {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  margin-bottom: var(--space-4);
}

.compat-card-icon {
  width: 36px;
  height: 36px;
  color: #FFFFFF;
  fill: #FFFFFF;
  display: block;
  flex-shrink: 0;
}

.compat-card-title {
  font-family: var(--font-accent, 'Gmarket Sans', sans-serif);
  font-size: 1.35rem;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: var(--space-2);
}

.compat-card-desc {
  font-size: 0.9375rem;
  color: rgba(255, 255, 255, 0.65);
  line-height: 1.6;
}

/* Section 05: Formats Cards */
.formats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
  margin-top: var(--space-8);
}

.format-card {
  background-color: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 2.5vw, 2rem);
  box-shadow: 0 4px 20px rgba(15, 23, 42, 0.04);
  transition: transform var(--duration-base) var(--ease-out), box-shadow var(--duration-base);
}

.format-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lift);
}

.format-card-title {
  font-family: var(--font-accent, 'Gmarket Sans', sans-serif);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-midnight);
  margin-bottom: var(--space-2);
}

.format-card-desc {
  font-size: 0.9375rem;
  color: var(--color-slate);
  line-height: 1.6;
}

/* Section 06: Advanced Options Accordion */
.advanced-options-grid {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: clamp(2rem, 6vw, 5rem);
  align-items: start;
}

.advanced-options-list {
  border-top: 1px solid var(--color-divider);
}

.advanced-group {
  border-bottom: 1px solid var(--color-divider);
  padding-block: var(--space-3);
}

.advanced-group-trigger {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: none;
  border: none;
  padding: var(--space-3) 0;
  cursor: pointer;
  text-align: left;
}

.advanced-group-title {
  font-family: var(--font-accent, 'Gmarket Sans', sans-serif);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-midnight);
}

.advanced-group-icon {
  width: 20px;
  height: 20px;
  color: var(--color-indigo);
  transition: transform 0.25s ease;
  flex-shrink: 0;
}

/* Closed state: '+' */
.advanced-group-trigger[aria-expanded="false"] .advanced-group-icon {
  transform: rotate(0deg);
}

/* Expanded state: '+' rotates 45deg to '×' */
.advanced-group-trigger[aria-expanded="true"] .advanced-group-icon {
  transform: rotate(45deg);
}

.advanced-group-items {
  list-style: disc;
  padding-left: 1.25rem;
  margin-top: var(--space-3);
  margin-bottom: var(--space-2);
  color: var(--color-slate);
  font-size: 0.9375rem;
  line-height: 1.85;
}

.advanced-group-items[hidden] {
  display: none;
}

/* Section 08: SafeSend Steps */
.safesend-steps-row {
  display: flex;
  gap: var(--space-3);
  margin-top: var(--space-6);
  flex-wrap: wrap;
}

.safesend-step-box {
  flex: 1;
  min-width: 120px;
  background-color: #151821;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  padding: 0.875rem 1rem;
}

.safesend-step-num {
  font-family: var(--font-accent, 'Gmarket Sans', sans-serif);
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--color-sky);
  display: block;
  margin-bottom: 2px;
}

.safesend-step-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: #FFFFFF;
}

/* ==========================================================================
   Moongchi Feature Mockup Widgets (02 Finder, 07 Password, 08 SafeSend)
   ========================================================================== */

/* 02. Finder Context Menu Mockup */
.finder-context-mockup {
  width: 100%;
  max-width: 520px;
  margin-inline: auto;
  background: rgba(21, 24, 33, 0.95);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(255, 255, 255, 0.06);
}

.finder-item-bar {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: 0.75rem 1rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-4);
}

.finder-item-icon {
  width: 24px;
  height: 24px;
  color: var(--color-sky);
  flex-shrink: 0;
}

.finder-item-name {
  font-size: 0.9375rem;
  font-weight: 600;
  color: #FFFFFF;
  letter-spacing: -0.01em;
}

.finder-item-meta {
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.45);
  margin-left: auto;
}

.finder-menu-panel {
  background: #1E222D;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-md);
  padding: 6px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4);
}

.finder-menu-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: 0.625rem 0.875rem;
  border-radius: 6px;
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.85);
  transition: all var(--duration-fast);
}

.finder-menu-item--active {
  background-color: var(--color-indigo);
  color: #FFFFFF;
  font-weight: 600;
}

.finder-menu-badge {
  margin-left: auto;
  font-size: 0.6875rem;
  padding: 2px 6px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.2);
  color: #FFFFFF;
  font-weight: 700;
}

.finder-menu-divider {
  height: 1px;
  background: rgba(255, 255, 255, 0.08);
  margin: 4px 6px;
}

/* 07. Password Security Vault Mockup */
.password-vault-mockup {
  width: 100%;
  max-width: 500px;
  margin-inline: auto;
  background: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 3vw, 2rem);
  box-shadow: 0 20px 40px -12px rgba(15, 23, 42, 0.1), 0 0 0 1px rgba(15, 23, 42, 0.04);
}

.vault-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--color-divider);
}

.vault-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  background: var(--color-indigo-mist);
  color: var(--color-indigo);
  border-radius: var(--radius-pill);
  font-size: 0.75rem;
  font-weight: 700;
}

.vault-input-box {
  background: #F8FAFC;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-3);
}

.vault-masked-dots {
  font-family: monospace;
  font-size: 1.125rem;
  letter-spacing: 0.2em;
  color: var(--color-midnight);
  font-weight: 700;
}

.vault-lock-btn {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-indigo);
  background: #FFFFFF;
  border: 1px solid var(--color-divider);
  padding: 4px 10px;
  border-radius: 6px;
}

.vault-strength-bar {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.vault-bar-track {
  flex: 1;
  height: 6px;
  background: #E2E8F0;
  border-radius: var(--radius-pill);
  overflow: hidden;
}

.vault-bar-fill {
  width: 100%;
  height: 100%;
  background: #10B981;
}

.vault-strength-text {
  font-size: 0.75rem;
  font-weight: 700;
  color: #10B981;
}

.vault-features-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.vault-feature-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.8125rem;
  color: var(--color-slate);
}

.vault-feature-item svg {
  color: #10B981;
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

/* 08. SafeSend Verification Console */
.safesend-console-card {
  width: 100%;
  max-width: 520px;
  margin-inline: auto;
  background: #151821;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: clamp(1.25rem, 2.5vw, 1.75rem);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.6);
}

.safesend-checks-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.safesend-check-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  padding: 0.875rem 1rem;
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
}

.safesend-check-icon {
  width: 18px;
  height: 18px;
  color: #10B981;
  flex-shrink: 0;
  margin-top: 2px;
}

.safesend-check-title {
  font-size: 0.875rem;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 2px;
}

.safesend-check-desc {
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.45;
  margin: 0;
}

/* Photo 3 Style: Clean Release Announcement Section */
.moongchi-release-section {
  background-color: #F8FAFC;
  border-top: 1px solid var(--color-divider);
  padding-block: clamp(5rem, 10vw, 8rem);
  text-align: center;
}

.moongchi-release-eyebrow {
  font-family: var(--font-accent, 'Gmarket Sans', sans-serif);
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--color-indigo);
  margin-bottom: var(--space-3);
  display: inline-block;
  text-transform: uppercase;
}

.moongchi-release-title {
  font-family: var(--font-accent, 'Gmarket Sans', sans-serif);
  font-size: clamp(2.4rem, 5vw, 3.75rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.03em;
  color: var(--color-midnight);
  margin-bottom: var(--space-4);
}

.moongchi-release-desc {
  font-size: clamp(1rem, 2vw, 1.125rem);
  line-height: 1.6;
  color: var(--color-slate-gray);
  max-width: 520px;
  margin-inline: auto;
  margin-bottom: var(--space-6);
}

.moongchi-release-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  flex-wrap: wrap;
}

/* Responsive adjustments */
@media (max-width: 900px) {
  .moongchi-grid-2col,
  .advanced-options-grid {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }

  .formats-grid {
    grid-template-columns: 1fr;
  }

  .compatibility-grid {
    grid-template-columns: 1fr;
  }

  /* Keep visual after text on mobile */
  .moongchi-order-desktop-left {
    order: 2;
  }
}