/* ============================================================
   Adaptive Learning Intervention Engine — Responsive & Page CSS
   全画面コンポーネント + モバイル対応
   ============================================================ */

/* ── Hamburger / Mobile Drawer ──────────────────────────────── */
/* ── Mobile Icon Nav ─────────────────────────────────────── */
.mobile-icon-nav {
  display: none;
}

.nav-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  padding: 6px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: transparent;
  cursor: pointer;
  z-index: 200;
}
.nav-hamburger span {
  display: block;
  width: 100%;
  height: 1.5px;
  background: var(--color-text-secondary);
  border-radius: 2px;
  transition: transform 0.25s var(--ease-out), opacity 0.2s;
}
.nav-hamburger.active span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-hamburger.active span:nth-child(2) { opacity: 0; }
.nav-hamburger.active span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

.mobile-drawer {
  position: fixed;
  top: 0; right: -100%;
  width: min(320px, 85vw);
  height: 100%;
  background: var(--color-bg-secondary);
  border-left: 1px solid var(--color-border);
  z-index: 150;
  transition: right 0.3s var(--ease-out);
  padding: 80px var(--space-6) var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.mobile-drawer.open { right: 0; }
.mobile-drawer a {
  display: block;
  padding: var(--space-3) var(--space-4);
  color: var(--color-text-secondary);
  font-size: var(--text-base);
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: background 0.15s, color 0.15s;
}
.mobile-drawer a:hover { background: var(--color-accent-soft); color: var(--color-text-primary); }

.drawer-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 140;
  backdrop-filter: blur(4px);
}
.drawer-overlay.open { display: block; }

/* ── Mobile Step Bar ─────────────────────────────────────────── */
.mobile-step-bar {
  display: none;
  position: fixed;
  top: 61px;
  left: 0; right: 0;
  z-index: 90;
  background: var(--color-bg-secondary);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-2) var(--space-6);
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
}
.mobile-step {
  font-size: 10px;
  font-weight: 600;
  color: var(--color-text-muted);
  padding: 2px 8px;
  border-radius: var(--radius-full);
  letter-spacing: 0.04em;
}
.mobile-step.active  { color: var(--color-accent);  background: var(--color-accent-soft); }
.mobile-step.completed { color: var(--color-emerald); }
.mobile-step-line {
  flex: 1;
  max-width: 40px;
  height: 1px;
  background: var(--color-border);
}
.mobile-step-line.active { background: var(--color-accent); }

/* ── Hide/Show utilities ─────────────────────────────────────── */
.hide-mobile  { }
.show-mobile  { display: none; }

/* ============================================================
   LANDING PAGE
   ============================================================ */

/* Hero */
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 0 var(--space-16);
  position: relative;
  overflow: hidden;
}
.hero-section .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}
.hero-inner { max-width: 560px; }

.hero-badge {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
  margin-bottom: var(--space-6);
}
.hero-title {
  font-size: clamp(2.4rem, 5vw, var(--text-5xl));
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-6);
}
.hero-desc {
  color: var(--color-text-secondary);
  font-size: var(--text-lg);
  line-height: 1.7;
  margin-bottom: var(--space-8);
}
.hero-actions {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
  margin-bottom: var(--space-10);
}
.hero-metrics {
  display: flex;
  align-items: center;
  gap: 0;
  padding: var(--space-5) var(--space-6);
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  width: fit-content;
}
.hero-metric { text-align: center; padding: 0 var(--space-6); }
.hero-metric-val {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  background: linear-gradient(135deg, var(--color-accent), var(--color-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-metric-label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.04em;
  margin-top: 2px;
}
.hero-metric-divider {
  width: 1px;
  height: 36px;
  background: var(--color-border);
  flex-shrink: 0;
}

/* Hero Dashboard Visual */
.hero-visual { position: relative; }
.hero-dashboard {
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}
.hd-header {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-5);
  background: var(--color-bg-elevated);
  border-bottom: 1px solid var(--color-border);
}
.hd-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
}
.hd-dot.red    { background: #FF5F57; }
.hd-dot.yellow { background: #FEBC2E; }
.hd-dot.green  { background: #28C840; }
.hd-title {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.05em;
  margin-left: var(--space-2);
}
.hd-body { padding: var(--space-5); display: flex; flex-direction: column; gap: var(--space-4); }

.hd-scores {
  display: flex;
  justify-content: space-around;
  gap: var(--space-4);
  padding: var(--space-3) 0;
}
.hd-score-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  font-weight: 500;
}

.hd-alert {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: linear-gradient(135deg, rgba(124,58,237,0.12), rgba(244,63,94,0.08));
  border: 1px solid rgba(124,58,237,0.3);
  border-radius: var(--radius-md);
}
.hd-alert-icon { font-size: 18px; }
.hd-alert-title { font-size: var(--text-xs); font-weight: 700; color: var(--color-text-primary); }
.hd-alert-desc  { font-size: 11px; color: var(--color-text-secondary); }
.hd-alert-badge {
  margin-left: auto;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--color-rose);
  padding: 2px 8px;
  border: 1px solid rgba(244,63,94,0.4);
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.hd-tasks { display: flex; flex-direction: column; gap: var(--space-2); }
.hd-task {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  background: var(--color-bg-elevated);
}
.hd-task-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  flex-shrink: 0;
}
.hd-task-dot.blue { background: var(--color-accent); box-shadow: 0 0 4px var(--color-accent); }
.hd-task-dot.red  { background: var(--color-rose);   box-shadow: 0 0 4px var(--color-rose); }
.hd-task-name { flex: 1; font-size: var(--text-xs); color: var(--color-text-secondary); }
.hd-task-date { font-size: 11px; color: var(--color-text-muted); white-space: nowrap; }

.hd-replan {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.hd-replan-bar {
  width: 100%;
  height: 4px;
  background: var(--color-bg-elevated);
  border-radius: var(--radius-full);
  overflow: hidden;
}
.hd-replan-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-accent), var(--color-cyan));
  border-radius: var(--radius-full);
  box-shadow: 0 0 6px var(--color-accent-glow);
  transition: width 0.1s linear;
}
.hd-replan span { font-size: 11px; color: var(--color-text-muted); }

/* Floating cards */
.float-card {
  position: absolute;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  white-space: nowrap;
  z-index: 2;
}
.float-card-icon { font-size: 20px; }
.float-card-val  { font-size: var(--text-sm); font-weight: 600; color: var(--color-text-primary); }
.float-card-sub  { font-size: 11px; color: var(--color-text-muted); }
.float-card-1 {
  top: -20px; right: 20px;
  animation: float-1 4s ease-in-out infinite;
}
.float-card-2 {
  bottom: -16px; left: 10px;
  animation: float-2 4s 1.5s ease-in-out infinite;
}
@keyframes float-1 {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-8px); }
}
@keyframes float-2 {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(6px); }
}

/* Features */
.section-header {
  text-align: center;
  margin-bottom: var(--space-12);
}
.section-desc {
  color: var(--color-text-secondary);
  font-size: var(--text-lg);
  margin-top: var(--space-4);
  max-width: 540px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.7;
}
.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-5);
}
.feature-card { position: relative; overflow: hidden; }
.feature-card::before {
  content: '';
  position: absolute;
  top: -60px; right: -60px;
  width: 180px; height: 180px;
  border-radius: 50%;
  opacity: 0.04;
  background: var(--color-accent);
  pointer-events: none;
}
.feature-icon {
  width: 48px; height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-4);
  border: 1px solid transparent;
}
.feature-icon-blue   { background: var(--color-accent-soft);  border-color: var(--color-accent-mid); color: var(--color-accent); }
.feature-icon-cyan   { background: var(--color-cyan-soft);    border-color: rgba(0,212,255,0.25);    color: var(--color-cyan); }
.feature-icon-violet { background: var(--color-violet-soft);  border-color: rgba(124,58,237,0.25);   color: #A78BFA; }
.feature-icon-emerald{ background: var(--color-emerald-soft); border-color: rgba(16,185,129,0.25);   color: var(--color-emerald); }
.feature-title { font-family: var(--font-display); font-size: var(--text-xl); font-weight: 600; margin-bottom: var(--space-3); }
.feature-desc  { color: var(--color-text-secondary); line-height: 1.7; margin-bottom: var(--space-4); font-size: var(--text-sm); }
.feature-tags  { display: flex; gap: var(--space-2); flex-wrap: wrap; }

/* How It Works */
.flow-steps {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
  justify-content: center;
}
.flow-step {
  flex: 1;
  min-width: 200px;
  max-width: 240px;
  padding: var(--space-6);
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  position: relative;
  text-align: center;
}
.flow-step-num {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 700;
  background: linear-gradient(135deg, var(--color-accent), var(--color-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-3);
}
.flow-step-icon { font-size: 28px; margin-bottom: var(--space-3); }
.flow-step-title { font-weight: 600; margin-bottom: var(--space-2); font-size: var(--text-base); }
.flow-step-desc  { font-size: var(--text-sm); color: var(--color-text-secondary); line-height: 1.6; }
.flow-arrow {
  font-size: var(--text-2xl);
  color: var(--color-accent);
  flex-shrink: 0;
  opacity: 0.6;
}

/* Patent */
.patent-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: var(--space-6);
}
.patent-side { display: flex; flex-direction: column; gap: var(--space-4); }
.patent-claim-num {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-2);
}
.patent-claim-title { font-weight: 600; font-size: var(--text-base); margin-bottom: var(--space-2); }
.patent-claim-desc  { font-size: var(--text-sm); color: var(--color-text-secondary); line-height: 1.7; }

/* Code Block */
.code-block {
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-2) var(--space-4);
  background: var(--color-bg-elevated);
  border-bottom: 1px solid var(--color-border);
}
.code-lang { font-size: 11px; color: var(--color-accent); font-weight: 600; letter-spacing: 0.06em; }
.code-file { font-size: 11px; color: var(--color-text-muted); font-family: monospace; }
.code-body {
  padding: var(--space-5);
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
  font-size: 13px;
  line-height: 1.7;
  overflow-x: auto;
  color: var(--color-text-secondary);
}
.code-kw  { color: #C792EA; }
.code-str { color: #C3E88D; }
.code-num { color: #F78C6C; }

/* CTA */
.cta-section { position: relative; overflow: hidden; }
.cta-inner {
  position: relative;
  z-index: 1;
  padding: var(--space-16) var(--space-8);
  background: linear-gradient(135deg, var(--color-bg-elevated) 0%, var(--color-bg-surface) 100%);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-xl);
  text-align: center;
  overflow: hidden;
}
.cta-glow {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 500px; height: 300px;
  background: radial-gradient(ellipse, rgba(58,125,255,0.08) 0%, transparent 70%);
  pointer-events: none;
}

/* ============================================================
   INPUT PAGE
   ============================================================ */
.form-section { margin-bottom: 0; }
.form-section-header {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-5);
  border-bottom: 1px solid var(--color-border);
}
.form-section-num {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 700;
  background: linear-gradient(135deg, var(--color-accent), var(--color-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  flex-shrink: 0;
}
.form-section-title { font-family: var(--font-display); font-size: var(--text-xl); font-weight: 600; margin-bottom: var(--space-1); }
.form-section-desc  { font-size: var(--text-sm); color: var(--color-text-secondary); }
.form-grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-5); }

.required { color: var(--color-rose); margin-left: 2px; }

/* Method cards */
.method-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
}
.method-card {
  cursor: pointer;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: var(--color-bg-elevated);
  transition: border-color 0.2s, background 0.2s, box-shadow 0.2s;
  overflow: hidden;
}
.method-card input[type="radio"] { display: none; }
.method-card-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-5) var(--space-4);
  text-align: center;
}
.method-icon { font-size: 24px; }
.method-name { font-weight: 600; font-size: var(--text-sm); color: var(--color-text-primary); }
.method-sub  { font-size: var(--text-xs); color: var(--color-text-muted); }
.method-card.active,
.method-card:has(input:checked) {
  border-color: var(--color-accent);
  background: var(--color-accent-soft);
  box-shadow: 0 0 0 1px var(--color-accent), var(--shadow-glow-sm);
}

/* Weakness chips */
.weakness-chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}
.weakness-chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  background: var(--color-bg-elevated);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all 0.15s var(--ease-out);
  user-select: none;
}
.weakness-chip input { display: none; }
.weakness-chip:hover { border-color: var(--color-accent); color: var(--color-text-primary); }
.weakness-chip.selected {
  border-color: var(--color-accent);
  background: var(--color-accent-soft);
  color: var(--color-accent);
  box-shadow: 0 0 0 1px var(--color-accent-mid);
}

/* Range labels */
.range-labels {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: var(--color-text-muted);
  margin-top: var(--space-2);
  padding: 0 2px;
}

/* Constraint summary */
.constraint-summary {
  display: flex;
  gap: var(--space-6);
  margin-top: var(--space-5);
  padding: var(--space-4) var(--space-5);
  background: var(--color-accent-soft);
  border: 1px solid var(--color-accent-mid);
  border-radius: var(--radius-md);
  flex-wrap: wrap;
}
.constraint-sum-item { display: flex; flex-direction: column; gap: 2px; }
.constraint-sum-label { font-size: var(--text-xs); color: var(--color-text-muted); letter-spacing: 0.04em; }
.constraint-sum-val   { font-family: var(--font-display); font-size: var(--text-xl); font-weight: 700; color: var(--color-accent); }

/* Emotion labels */
.emotion-labels {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: var(--color-text-muted);
  margin-top: var(--space-2);
}
.emotion-alert {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4);
  background: var(--color-rose-soft);
  border: 1px solid rgba(244,63,94,0.3);
  border-radius: var(--radius-md);
  margin-top: var(--space-5);
  font-size: var(--text-sm);
}
.emotion-alert strong { color: var(--color-rose); display: block; margin-bottom: 2px; }
.emotion-alert p { color: var(--color-text-secondary); font-size: var(--text-xs); }

/* ============================================================
   PLAN PAGE
   ============================================================ */
.plan-bottom-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: var(--space-8);
  align-items: start;
}

/* Gantt scroll */
.gantt-scroll-wrapper { overflow-x: auto; min-width: 0; }
.gantt-timeline-header {
  position: relative;
  height: 24px;
}
.gantt-timeline-header span {
  position: absolute;
  font-size: 10px;
  color: var(--color-text-muted);
  transform: translateX(-50%);
  white-space: nowrap;
}
.gantt-timeline-cell { overflow: visible; }
@keyframes gantt-slide-in {
  from { opacity: 0; transform: scaleX(0.2); transform-origin: left; }
  to   { opacity: 1; transform: scaleX(1); }
}

/* Task card */
.task-card {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-5);
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-3);
  transition: border-color 0.2s, box-shadow 0.2s;
  flex-wrap: wrap;
}
.task-card:hover { border-color: var(--color-border-strong); box-shadow: var(--shadow-md); }
.task-card-left { display: flex; gap: var(--space-3); flex: 1; min-width: 0; }
.task-week-bar {
  width: 3px;
  min-height: 60px;
  border-radius: var(--radius-full);
  flex-shrink: 0;
  opacity: 0.8;
}
.task-info { flex: 1; min-width: 0; }
.task-header-row {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  margin-bottom: var(--space-2);
  flex-wrap: wrap;
}
.task-title { font-weight: 600; font-size: var(--text-base); line-height: 1.4; flex: 1; min-width: 160px; }
.task-meta-row {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
  margin-bottom: var(--space-2);
}
.task-meta { font-size: var(--text-xs); color: var(--color-text-muted); }
.task-reasoning {
  font-size: var(--text-xs);
  color: var(--color-text-secondary);
  line-height: 1.6;
  padding: var(--space-2) var(--space-3);
  background: var(--color-bg-elevated);
  border-radius: var(--radius-sm);
  margin-top: var(--space-2);
}
.task-deps { font-size: var(--text-xs); color: var(--color-text-muted); margin-top: var(--space-1); }
.task-actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  flex-shrink: 0;
}
.tag-sm { font-size: 10px !important; padding: 2px 7px !important; }
.filter-btn.active { color: var(--color-accent); border-color: var(--color-accent); }

/* Alumni card */
.alumni-card-inner {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
}
.alumni-avatar {
  width: 44px; height: 44px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--color-accent), var(--color-cyan));
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: var(--text-lg);
  color: #fff;
  flex-shrink: 0;
}
.alumni-avatar-lg { width: 72px; height: 72px; font-size: var(--text-2xl); margin: 0 auto; }
.alumni-info { flex: 1; min-width: 0; }
.alumni-name { font-weight: 600; font-size: var(--text-base); margin-bottom: 2px; }
.alumni-sub  { font-size: var(--text-xs); color: var(--color-text-muted); line-height: 1.4; }
.alumni-score {
  text-align: center;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.alumni-score-val {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-emerald);
}
.alumni-score-label {
  font-size: 10px;
  color: var(--color-text-muted);
}

/* Advice banner */
.advice-banner {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  padding: var(--space-5) var(--space-6);
  background: linear-gradient(135deg, rgba(58,125,255,0.08), rgba(0,212,255,0.05));
  border: 1px solid var(--color-accent-mid);
  border-radius: var(--radius-lg);
}
.advice-icon { font-size: 22px; flex-shrink: 0; margin-top: 2px; }
.advice-text { font-size: var(--text-sm); color: var(--color-text-secondary); line-height: 1.8; }

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(8px);
  z-index: 300;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-6);
}
.modal-inner {
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 480px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  animation: modal-in 0.3s var(--ease-spring);
}
@keyframes modal-in {
  from { opacity: 0; transform: translateY(20px) scale(0.97); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}
.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5) var(--space-6);
  border-bottom: 1px solid var(--color-border);
}
.modal-title { font-family: var(--font-display); font-size: var(--text-xl); font-weight: 600; }
.modal-close {
  width: 32px; height: 32px;
  border-radius: var(--radius-sm);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background 0.15s;
}
.modal-close:hover { background: var(--color-rose-soft); color: var(--color-rose); }
.modal-body { padding: var(--space-6); }

/* ============================================================
   FEEDBACK PAGE
   ============================================================ */
.fb-phase-header {
  display: flex;
  align-items: flex-start;
  gap: var(--space-5);
  margin-bottom: var(--space-8);
}
.fb-task-card {
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  margin-bottom: var(--space-3);
  transition: border-color 0.2s, box-shadow 0.2s;
}
.fb-task-card:hover { border-color: var(--color-border-strong); box-shadow: var(--shadow-sm); }
.fb-task-main {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
  flex-wrap: wrap;
}
.fb-task-info { flex: 1; min-width: 0; }
.fb-task-title  { font-weight: 600; font-size: var(--text-base); margin-bottom: var(--space-1); }
.fb-task-meta   { font-size: var(--text-xs); color: var(--color-text-muted); }
.fb-task-status { font-size: var(--text-sm); font-weight: 600; flex-shrink: 0; white-space: nowrap; }
.fb-task-actions { display: flex; gap: var(--space-3); flex-wrap: wrap; }
.btn-done { opacity: 0.5; pointer-events: none; }

/* Reason cards */
.reason-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
  margin-bottom: var(--space-2);
}
.reason-card {
  cursor: pointer;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-bg-surface);
  transition: all 0.2s var(--ease-out);
  overflow: hidden;
}
.reason-card input[type="radio"] { display: none; }
.reason-card-inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-5);
}
.reason-icon {
  width: 44px; height: 44px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  border: 1px solid transparent;
  margin-bottom: var(--space-1);
}
.reason-name { font-weight: 600; font-size: var(--text-base); }
.reason-desc { font-size: var(--text-sm); color: var(--color-text-secondary); line-height: 1.5; }
.reason-action { display: flex; gap: var(--space-2); flex-wrap: wrap; margin-top: var(--space-2); }
.reason-card.selected,
.reason-card:has(input:checked) {
  border-color: var(--color-accent);
  background: var(--color-accent-soft);
  box-shadow: 0 0 0 1px var(--color-accent-mid), var(--shadow-glow-sm);
}

/* Replan result */
.replan-result-header { text-align: center; padding: var(--space-4) 0; }
.replan-strategy-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-5);
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border-strong);
  font-size: var(--text-sm);
  font-weight: 600;
  margin-bottom: var(--space-4);
}
.strategy-icon { font-size: 18px; }

/* New task preview */
.new-task-row {
  display: grid;
  grid-template-columns: 8px 1fr;
  gap: var(--space-3);
  align-items: start;
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-border);
}
.new-task-row:last-child { border-bottom: none; }
.new-task-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  margin-top: 6px;
  flex-shrink: 0;
}
.new-task-info { display: flex; align-items: baseline; gap: var(--space-3); flex-wrap: wrap; }
.new-task-title { font-weight: 500; font-size: var(--text-sm); }
.new-task-date  { font-size: var(--text-xs); color: var(--color-text-muted); white-space: nowrap; }
.new-task-reasoning {
  grid-column: 2;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.6;
  padding-top: 2px;
}

/* Loop indicator */
.loop-indicator {
  padding: var(--space-6);
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  text-align: center;
}
.loop-title {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
}
.loop-steps {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}
.loop-step {
  font-size: var(--text-xs);
  font-weight: 600;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  white-space: nowrap;
}
.loop-step.completed { color: var(--color-emerald); border-color: rgba(16,185,129,0.3); background: var(--color-emerald-soft); }
.loop-step.active    { color: var(--color-accent);  border-color: var(--color-accent-mid); background: var(--color-accent-soft); animation: loop-pulse 1.5s ease-in-out infinite; }
.loop-arrow { color: var(--color-text-muted); font-size: var(--text-sm); }
@keyframes loop-pulse {
  0%, 100% { box-shadow: none; }
  50%       { box-shadow: 0 0 8px var(--color-accent-glow); }
}

/* ============================================================
   RESPONSIVE BREAKPOINTS
   ============================================================ */

/* Tablet: ≤ 1024px */
@media (max-width: 1024px) {
  .hero-section .container {
    grid-template-columns: 1fr;
    gap: var(--space-12);
  }
  .hero-inner { max-width: 100%; }
  .hero-visual { order: -1; }
  .hero-dashboard { max-width: 500px; margin: 0 auto; }
  .float-card-1 { top: -12px; right: -8px; }
  .float-card-2 { bottom: -12px; left: -8px; }

  .patent-grid { grid-template-columns: 1fr; }
  .patent-main { order: 0; }
  .patent-side {
    order: 1;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
  }

  .plan-bottom-grid { grid-template-columns: 1fr; }

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

/* Mobile: ≤ 768px */
@media (max-width: 768px) {
  /* Navbar */
  .nav-hamburger { display: flex; }
  .navbar-links  { display: none; }
  .hide-mobile   { display: none !important; }
  .show-mobile   { display: block; }
  .mobile-step-bar { display: flex; }

  /* Mobile icon nav */
  .mobile-icon-nav {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
    flex: 1;
    max-width: 280px;
    margin: 0 auto;
  }
  .mobile-icon-item {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 10px;
    color: rgba(160, 180, 220, 0.85);
    transition: color 0.2s, background 0.2s;
    flex: 1;
  }
  .mobile-icon-item:hover,
  .mobile-icon-item:active {
    color: var(--color-text-primary);
    background: rgba(58, 125, 255, 0.1);
  }
  .mobile-icon-item.active {
    color: var(--color-accent);
    background: rgba(58, 125, 255, 0.12);
    position: relative;
  }
  .mobile-icon-item.active::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: var(--color-accent);
    box-shadow: 0 0 6px var(--color-accent), 0 0 12px rgba(58, 125, 255, 0.3);
    animation: navDotPulse 2s ease-in-out infinite;
  }

  /* Mobile gimmick animations */
  @keyframes navDotPulse {
    0%, 100% { opacity: 1; transform: translateX(-50%) scale(1); }
    50% { opacity: 0.5; transform: translateX(-50%) scale(1.4); }
  }
  @keyframes icon-ripple {
    to { transform: scale(2.5); opacity: 0; }
  }
  @keyframes swipeHintAppear {
    from { opacity: 0; transform: translateX(-50%) translateY(20px); }
    to   { opacity: 1; transform: translateX(-50%) translateY(0); }
  }
  @keyframes swipeHintFloat {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50%      { transform: translateX(-50%) translateY(-6px); }
  }
  @keyframes tooltipAppear {
    from { opacity: 0; transform: translateX(-50%) translateY(4px); }
    to   { opacity: 1; transform: translateX(-50%) translateY(0); }
  }

  /* Swipe hint badge */
  #swipeHint .swipe-hint-inner {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: rgba(5, 9, 18, 0.92);
    backdrop-filter: blur(16px);
    border: 1px solid rgba(58, 125, 255, 0.3);
    border-radius: 24px;
    font-size: 13px;
    font-weight: 500;
    color: var(--color-text-secondary);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(58, 125, 255, 0.08);
  }
  #swipeHint svg {
    color: var(--color-accent);
    animation: swipeHandWave 1.5s ease-in-out infinite;
  }
  @keyframes swipeHandWave {
    0%, 100% { transform: translateX(0) rotate(0deg); }
    25%      { transform: translateX(6px) rotate(-5deg); }
    75%      { transform: translateX(-6px) rotate(5deg); }
  }

  /* Layout — prevent horizontal overflow */
  main { padding-top: 96px !important; }
  .container { padding: 0 var(--space-4); max-width: 100vw; box-sizing: border-box; }
  .section { padding: var(--space-16) 0; overflow-x: hidden; }
  /* Prevent horizontal overflow — on body/html level, not * */
  html, body { overflow-x: hidden; }
  img, svg, video, canvas, iframe { max-width: 100%; height: auto; }
  /* Slide v4: single image — always fill its container */
  #sImg { width: 100% !important; height: auto !important; display: block; max-width: 100% !important; }
  #slideSection { padding: 0 var(--space-4); max-width: 100vw; overflow: hidden; box-sizing: border-box; }
  #sDeck { max-width: 100% !important; box-sizing: border-box; }
  pre, code, table { overflow-x: auto; max-width: 100%; }
  .card, .card-highlight { overflow: hidden; word-break: break-word; }

  /* Hero */
  .hero-section { padding: 100px 0 var(--space-12); min-height: auto; }
  .hero-title { font-size: clamp(2rem, 8vw, 2.8rem); }
  .hero-desc  { font-size: var(--text-base); }
  .hero-actions { gap: var(--space-3); }
  .hero-actions .btn-lg { padding: var(--space-3) var(--space-6); font-size: var(--text-sm); }
  .hero-metrics { gap: 0; padding: var(--space-4); width: 100%; }
  .hero-metric  { padding: 0 var(--space-4); }
  .hero-metric-val { font-size: var(--text-xl); }
  .float-card { font-size: var(--text-xs); padding: var(--space-2) var(--space-3); }
  .float-card-icon { font-size: 16px; }
  .float-card-val  { font-size: var(--text-xs); }
  .float-card-sub  { font-size: 10px; }

  /* Features */
  .features-grid { grid-template-columns: 1fr; }

  /* Flow steps */
  .flow-steps { flex-direction: column; align-items: stretch; }
  .flow-step  { max-width: 100%; min-width: 0; }
  .flow-arrow { transform: rotate(90deg); align-self: center; }

  /* Patent */
  .patent-side { grid-template-columns: 1fr; }
  .code-body { font-size: 12px; }

  /* Form */
  .form-grid-2  { grid-template-columns: 1fr; }
  .method-cards { grid-template-columns: 1fr; }
  .method-card-inner { flex-direction: row; text-align: left; gap: var(--space-3); }

  /* Plan page */
  .grid-4 { grid-template-columns: repeat(2, 1fr) !important; }
  .task-card { flex-direction: column; }
  .task-actions { flex-direction: row; width: 100%; }
  .task-actions .btn { flex: 1; }
  .task-header-row { flex-direction: column; gap: var(--space-2); }
  .gantt-row-label { font-size: 11px; }
  .gantt-row-text  { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 150px; }

  /* Alumni */
  .alumni-card-inner { flex-wrap: wrap; }

  /* Feedback */
  .reason-cards { grid-template-columns: 1fr; }
  .fb-task-main { flex-direction: column; }
  .fb-phase-header { flex-direction: column; gap: var(--space-3); }

  /* Loop phases — horizontal scroll on mobile */
  .loop-steps { gap: var(--space-1); }
  .loop-step  { font-size: 10px; padding: 2px 8px; }
  #loopPhases {
    flex-wrap: nowrap !important;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding-bottom: var(--space-2);
  }
  #loopPhases::-webkit-scrollbar { display: none; }
  .loop-phase { min-width: 90px !important; flex-shrink: 0; }
  .loop-arrow { flex-shrink: 0; }

  /* Cycle history cards — prevent text collapse */
  #cycleHistory > div {
    flex-direction: column !important;
    align-items: flex-start !important;
    gap: var(--space-2) !important;
  }
  #cycleHistory > div > span:nth-child(3) {
    flex: none !important;
    width: 100% !important;
    word-break: normal !important;
    overflow-wrap: break-word;
  }

  /* ΔS cards — single column on mobile */
  #deltaSCards.grid-2 { grid-template-columns: 1fr !important; }

  /* NLP input row — stack on mobile */
  #nlpInput { min-height: 60px; }

  /* Gantt chart — ensure horizontal scroll */
  #ganttChart { -webkit-overflow-scrolling: touch; }

  /* State chart SVG — ensure responsive */
  #stateChart svg { max-width: 100%; }

  /* CTA */
  .cta-inner { padding: var(--space-10) var(--space-5); }
  .cta-card { padding: var(--space-8) var(--space-5) !important; }

  /* Page header (entrance-exam, etc.) */
  .page-header { padding-top: 105px; padding-bottom: var(--space-8); }
  .page-header .text-headline { font-size: clamp(1.5rem, 6vw, 2rem); }
  .page-header p { font-size: var(--text-sm); }

  /* Entrance-exam: search bar */
  #uniSearch { font-size: 14px; }

  /* Entrance-exam: selected university card */
  #selectedUni > div:first-child { flex-direction: column; align-items: flex-start; }
  #selectedUni .btn { width: 100%; justify-content: center; font-size: var(--text-sm); }

  /* Entrance-exam: group tabs — horizontal scroll */
  #groupTabs {
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding-bottom: 4px;
  }
  #groupTabs::-webkit-scrollbar { display: none; }
  .group-tab { white-space: nowrap; flex-shrink: 0; }

  /* Entrance-exam: university grid — single column on mobile */
  #uniGrid { grid-template-columns: 1fr !important; gap: var(--space-2) !important; }
  .uni-card { padding: var(--space-3) !important; }

  /* Entrance-exam: demo schedule */
  .demo-phase { padding: var(--space-2) var(--space-3); }
  .demo-phase div[style*="padding-left:36px"] { padding-left: 28px !important; }

  /* Entrance-exam: features highlight */
  .card-glass > div { flex-direction: column; align-items: flex-start; gap: var(--space-2) !important; }

  /* Footer */
  .footer-inner { flex-direction: column; gap: var(--space-4); text-align: center; }

  /* Toast */
  .toast-container { right: var(--space-4); left: var(--space-4); bottom: var(--space-4); }
  .toast { min-width: 0; }
}

/* Small mobile: ≤ 480px */
@media (max-width: 480px) {
  .hero-title { font-size: 1.9rem; }
  .text-headline { font-size: clamp(1.8rem, 7vw, 2.2rem); }
  .hero-metrics { flex-direction: column; gap: var(--space-3); padding: var(--space-4); }
  .hero-metric-divider { width: 100%; height: 1px; }
  .hero-metric { padding: var(--space-2) 0; }
  .grid-4 { grid-template-columns: 1fr 1fr !important; }
  .method-cards { grid-template-columns: 1fr; }
  .form-section-header { flex-direction: column; }
}

/* ================================================================
   PLAN PAGE - Mobile Task View
   ================================================================ */

/* Mobile task cards (hidden on desktop) */
.mobile-task-cards { display: none; }

@media (max-width: 768px) {
  /* Show card view on mobile, hide table */
  .task-table-wrapper { display: none; }
  .mobile-task-cards { display: flex; flex-direction: column; gap: var(--space-3); }

  .mobile-task-card {
    padding: var(--space-4);
    background: var(--color-bg-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
  }
  .mobile-task-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-3);
    gap: var(--space-2);
  }
  .mobile-task-card-title {
    font-weight: 600;
    font-size: var(--text-sm);
    flex: 1;
    min-width: 0;
  }
  .mobile-task-card-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    margin-bottom: var(--space-3);
  }
  .mobile-task-card-reasoning {
    font-size: var(--text-xs);
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin-bottom: var(--space-3);
  }
  .mobile-task-card-actions {
    display: flex;
    justify-content: flex-end;
  }

  /* Gantt on mobile: horizontal scroll hint */
  .gantt-container {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
  .gantt-row {
    min-width: 500px;
  }

  /* Plan metrics: 2x2 on mobile */
  #stateMetrics.grid-4 {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-3);
  }

  /* Plan bottom buttons */
  #priorityTasks .card {
    padding: var(--space-4);
  }

  /* Entrance exam quick-start grid */
  .grid-2.quick-start {
    grid-template-columns: 1fr;
  }

  /* Input form: emotion labels side by side */
  .emotion-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2);
  }
  .emotion-row label { margin: 0; }

  /* Constraint sliders */
  .constraint-sliders input[type="range"] {
    width: 100%;
  }

  /* Weakness grid: 2 columns on mobile */
  #weaknessGrid {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: var(--space-2) !important;
  }

  /* Form submit buttons */
  .form-submit-row {
    flex-direction: column;
    align-items: stretch;
  }
  .form-submit-row .btn {
    justify-content: center;
    text-align: center;
  }

  /* Feedback: reason cards 1 col */
  .reason-cards { grid-template-columns: 1fr; }

  /* Status cards 3 col compressed */
  .status-cards { grid-template-columns: repeat(3, 1fr); gap: var(--space-2); }
  .status-card-inner { padding: var(--space-3) var(--space-2); }
  .status-icon { font-size: 20px; }
  .status-name { font-size: 11px; }
  .status-desc { display: none; }
}

@media (max-width: 480px) {
  /* Emotion: single column */
  .emotion-row { grid-template-columns: 1fr; }

  /* Status cards: 1 col */
  .status-cards { grid-template-columns: 1fr; }
  .status-desc { display: block; }
  .status-card-inner { flex-direction: row; padding: var(--space-3); gap: var(--space-3); text-align: left; align-items: center; }
  .status-icon { font-size: 24px; }

  /* Weakness: single col */
  #weaknessGrid { grid-template-columns: 1fr !important; }

  /* Feedback reason: full cards */
  .reason-card-inner { flex-direction: row; }
}