@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@400;500;700&display=swap');

/* ========================
  Reset & Base
======================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Noto Sans JP', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
  padding: 20px;
  color: #333;
}

/* ========================
  Container & Header
======================== */
.container {
  max-width: 1200px;
  margin: 0 auto;
}

header {
  text-align: center;
  margin-bottom: 28px;
  padding: 8px 0 4px;
}

h1 {
  color: white;
  font-size: 2.4em;
  font-weight: 700;
  margin-bottom: 10px;
  letter-spacing: -0.01em;
  text-shadow: 0 2px 16px rgba(0, 0, 0, 0.18);
}

h2 {
  color: white;
  font-size: 1.05em;
  font-weight: 700;
  margin-top: 22px;
  margin-bottom: 8px;
  letter-spacing: 0.02em;
  opacity: 0.95;
}

.subtitle {
  color: rgba(255, 255, 255, 0.92);
  font-size: 1.05em;
  letter-spacing: 0.01em;
}

.container p {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 10px;
  line-height: 1.75;
}

.howto {
  color: rgba(255, 255, 255, 0.92);
  margin-left: 22px;
  line-height: 2.0;
  font-size: 15px;
}

/* ========================
  Input Grid & Fields
======================== */
.input-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 14px;
  margin-bottom: 16px;
}

.input-wrapper {
  position: relative;
}

.input-field {
  width: 100%;
  padding: 14px 44px 14px 16px;
  border: 2px solid rgba(255, 255, 255, 0.45);
  border-radius: 14px;
  font-size: 1em;
  font-family: inherit;
  background: rgba(255, 255, 255, 0.22);
  color: #fff;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: border-color 0.22s ease, background 0.22s ease, box-shadow 0.22s ease;
  outline: none;
}

.input-field::placeholder {
  color: rgba(255, 255, 255, 0.6);
}

.input-field:focus {
  border-color: rgba(255, 255, 255, 0.9);
  background: rgba(255, 255, 255, 0.32);
  box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.15);
}

/* ========================
  Buttons
======================== */
.remove-btn {
  position: absolute;
  right: 11px;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255, 107, 107, 0.85);
  color: white;
  border: none;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 0.9em;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s ease, transform 0.2s ease;
}

.remove-btn:hover {
  background: #ff4d4d;
  transform: translateY(-50%) scale(1.12);
}

.add-btn {
  background: linear-gradient(135deg, #56ab2f, #a8e063);
  color: white;
  border: none;
  padding: 11px 28px;
  border-radius: 50px;
  cursor: pointer;
  font-size: 0.95em;
  font-family: inherit;
  font-weight: 500;
  letter-spacing: 0.02em;
  box-shadow: 0 4px 14px rgba(86, 171, 47, 0.35);
  transition: transform 0.2s ease, box-shadow 0.2s ease, opacity 0.2s ease;
}

.add-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 7px 20px rgba(86, 171, 47, 0.45);
}

.add-btn:active {
  transform: translateY(0);
}

.generate-btn {
  width: 100%;
  background: linear-gradient(135deg, #f093fb, #f5576c);
  color: white;
  border: none;
  padding: 18px;
  border-radius: 16px;
  font-size: 1.15em;
  font-family: inherit;
  font-weight: 700;
  margin-bottom: 20px;
  margin-top: 16px;
  cursor: pointer;
  letter-spacing: 0.03em;
  box-shadow: 0 6px 24px rgba(245, 87, 108, 0.4);
  transition: transform 0.22s ease, box-shadow 0.22s ease, opacity 0.2s ease;
}

.generate-btn:hover:not(:disabled) {
  transform: translateY(-3px);
  box-shadow: 0 10px 32px rgba(245, 87, 108, 0.52);
}

.generate-btn:active:not(:disabled) {
  transform: translateY(-1px);
}

.generate-btn:disabled {
  opacity: 0.72;
  cursor: default;
  transform: none;
}

/* ========================
  Settings
======================== */
.settings-box {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-bottom: 4px;
  margin-top: 14px;
}

.settings-label {
  font-weight: 500;
  font-size: 0.95em;
  color: rgba(255, 255, 255, 0.95);
  letter-spacing: 0.02em;
}

.settings-input {
  padding: 8px 12px;
  border-radius: 10px;
  border: 2px solid rgba(255, 255, 255, 0.4);
  font-size: 1em;
  font-family: inherit;
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
  cursor: pointer;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  transition: border-color 0.2s ease, background 0.2s ease;
  outline: none;
}

.settings-input:focus {
  border-color: rgba(255, 255, 255, 0.85);
  background: rgba(255, 255, 255, 0.28);
}

.settings-input option {
  background: #6b5acd;
  color: #fff;
}

.settings-panel {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: all 0.3s ease;
}

.settings-panel.active {
  max-height: 500px;
  opacity: 1;
}

/* ========================
  Progress Bar
======================== */
#loadingArea {
  padding: 4px 0 8px;
}

.progress-wrap {
  width: 100%;
  height: 8px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 20px;
  overflow: hidden;
  margin-top: 10px;
}

#progressBar {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #a78bfa, #f472b6, #38bdf8);
  background-size: 200% 100%;
  animation: progressShimmer 2s linear infinite;
  border-radius: 20px;
  transition: width 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes progressShimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

#progressText {
  margin-top: 8px;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.8);
  letter-spacing: 0.02em;
}

/* ========================
  Error
======================== */
.error-message {
  background: rgba(255, 235, 238, 0.9);
  color: #c62828;
  padding: 14px 18px;
  border-radius: 12px;
  margin-top: 20px;
  display: none;
  font-size: 0.95em;
  border-left: 4px solid #ef5350;
  backdrop-filter: blur(6px);
}

.error-message.active {
  display: block;
}

/* ========================
  AIエージェント処理ログ
======================== */
#agentLogContainer {
  background: rgba(255, 255, 255, 0.12);
  border-radius: 18px;
  padding: 22px;
  margin-bottom: 24px;
  border: 1px solid rgba(255, 255, 255, 0.28);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
}

#agentLogContainer h2 {
  color: white;
  font-size: 1.05em;
  margin-bottom: 4px;
  margin-top: 0;
}

.agent-log-note {
  font-size: 0.82em;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 16px;
}

.agent-tasks {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 14px;
}

.agent-step {
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(255, 255, 255, 0.13);
  border-radius: 12px;
  padding: 10px 16px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  transition: background 0.2s ease;
}

.agent-step:hover {
  background: rgba(255, 255, 255, 0.18);
}

.agent-step-num {
  background: linear-gradient(135deg, rgba(255,255,255,0.4), rgba(255,255,255,0.2));
  color: white;
  font-weight: 700;
  font-size: 0.82em;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.agent-step-label {
  color: rgba(255, 255, 255, 0.95);
  font-size: 0.92em;
  flex: 1;
}

.agent-step-done {
  color: #86efac;
  font-size: 0.82em;
  font-weight: 600;
  flex-shrink: 0;
}

.agent-analysis-detail {
  margin-top: 8px;
}

.agent-analysis-detail summary {
  color: rgba(255, 255, 255, 0.88);
  font-size: 0.88em;
  cursor: pointer;
  padding: 9px 14px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  user-select: none;
  border: 1px solid rgba(255, 255, 255, 0.15);
  transition: background 0.2s ease;
  list-style: none;
}

.agent-analysis-detail summary:hover {
  background: rgba(255, 255, 255, 0.18);
}

.agent-analysis-body {
  margin-top: 10px;
  padding: 14px 16px;
  background: rgba(0, 0, 0, 0.18);
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.agent-analysis-body p {
  color: rgba(255, 255, 255, 0.82);
  font-size: 0.86em;
  line-height: 1.75;
  margin-bottom: 4px;
}

.agent-analysis-body p:last-child {
  margin-bottom: 0;
}

/* ========================
  Idea Cards
======================== */
.idea-card {
  background: #ffffff;
  border-radius: 20px;
  padding: 28px 30px;
  margin-bottom: 24px;
  box-shadow:
    0 2px 4px rgba(0, 0, 0, 0.04),
    0 8px 24px rgba(0, 0, 0, 0.08),
    0 20px 48px rgba(102, 126, 234, 0.12);
  border-top: 5px solid transparent;
  background-image:
    linear-gradient(white, white),
    linear-gradient(135deg, #f093fb, #f5576c, #667eea);
  background-origin: border-box;
  background-clip: padding-box, border-box;
  transition: transform 0.22s ease, box-shadow 0.22s ease;
}

.idea-card:hover {
  transform: translateY(-3px);
  box-shadow:
    0 4px 8px rgba(0, 0, 0, 0.05),
    0 14px 36px rgba(0, 0, 0, 0.11),
    0 28px 60px rgba(102, 126, 234, 0.16);
}

.idea-card h3 {
  font-size: 1.2em;
  font-weight: 700;
  margin-bottom: 14px;
  color: #1a1a2e;
  letter-spacing: -0.01em;
  line-height: 1.4;
}

/* ========================
  Section Titles & Boxes
======================== */
.section-title {
  font-size: 0.82em;
  font-weight: 700;
  margin-top: 18px;
  margin-bottom: 7px;
  color: #6c6c8a;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding-left: 10px;
  border-left: 3px solid #667eea;
}

.section-box {
  background: #f7f8fc;
  padding: 12px 16px;
  border-radius: 12px;
  margin-bottom: 6px;
  font-size: 0.92em;
  line-height: 1.7;
  color: #444;
  border: 1px solid #eef0f8;
}

.revenue-box {
  background: linear-gradient(135deg, #fff4fb, #ffeef5);
  padding: 14px 16px;
  border-radius: 14px;
  margin-top: 10px;
  font-size: 0.92em;
  line-height: 1.75;
  border: 1px solid #fcd5e4;
}

/* ========================
  Score Badges
======================== */
.score-grid {
  display: flex;
  gap: 8px;
  margin: 12px 0;
  flex-wrap: wrap;
}

.score-badge {
  background: linear-gradient(135deg, #eef1ff, #e8edff);
  padding: 6px 14px;
  border-radius: 50px;
  font-size: 0.88em;
  font-weight: 700;
  color: #4a54e1;
  border: 1px solid rgba(102, 126, 234, 0.2);
  letter-spacing: 0.01em;
}

/* ========================
  Summary & Keyword Boxes
======================== */
.idea-summary {
  background: #f4f7ff;
  border-left: 4px solid #667eea;
  padding: 13px 16px;
  border-radius: 0 12px 12px 0;
  margin-bottom: 12px;
  font-size: 0.93em;
  line-height: 1.82;
  color: #333;
}

.idea-desc {
  font-size: 0.93em;
  line-height: 1.75;
  color: #555;
  margin-bottom: 12px;
}

.keyword-link {
  background: #fffbf0;
  border-left: 4px solid #f5a623;
  padding: 10px 16px;
  border-radius: 0 12px 12px 0;
  margin-bottom: 8px;
  font-size: 0.88em;
  line-height: 1.72;
  color: #5a4500;
}

/* ========================
  Copy Button
======================== */
.copy-btn {
  background: linear-gradient(135deg, #667eea, #764ba2);
  color: white;
  border: none;
  padding: 9px 20px;
  border-radius: 50px;
  cursor: pointer;
  font-size: 0.9em;
  font-family: inherit;
  font-weight: 500;
  margin-top: 14px;
  letter-spacing: 0.02em;
  box-shadow: 0 3px 12px rgba(102, 126, 234, 0.35);
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.copy-btn:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(102, 126, 234, 0.48);
}

.copy-btn:disabled {
  opacity: 0.82;
  cursor: default;
  transform: none;
}

/* ========================
  Loading Spinner
======================== */
.loading {
  display: none;
  text-align: center;
  padding: 40px;
}

.loading.active {
  display: block;
}

.spinner {
  border: 3px solid rgba(255, 255, 255, 0.2);
  border-top: 3px solid #ffffff;
  border-radius: 50%;
  width: 48px;
  height: 48px;
  animation: spin 0.9s linear infinite;
  margin: 0 auto 20px;
}

@keyframes spin {
  0%   { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* ========================
  フィードバックボタン（Closed Loop UI）
======================== */
.idea-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin-top: 14px;
}

.idea-actions .copy-btn {
  margin-top: 0;
}

.fb-btn {
  border: none;
  padding: 9px 16px;
  border-radius: 50px;
  cursor: pointer;
  font-size: 0.86em;
  font-family: inherit;
  font-weight: 600;
  letter-spacing: 0.01em;
  transition: transform 0.2s ease, box-shadow 0.2s ease, opacity 0.2s ease;
}

.fb-up {
  background: linear-gradient(135deg, #34d399, #10b981);
  color: #fff;
  box-shadow: 0 3px 12px rgba(16, 185, 129, 0.32);
}

.fb-down {
  background: linear-gradient(135deg, #fca5a5, #f87171);
  color: #fff;
  box-shadow: 0 3px 12px rgba(248, 113, 113, 0.3);
}

.fb-adopt {
  background: linear-gradient(135deg, #fbbf24, #f59e0b);
  color: #fff;
  box-shadow: 0 3px 12px rgba(245, 158, 11, 0.32);
}

.fb-btn:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.18);
}

.fb-btn:disabled {
  opacity: 0.7;
  cursor: default;
  transform: none;
}

.fb-thanks {
  font-size: 0.82em;
  font-weight: 600;
  color: #10b981;
  margin-left: 4px;
}

/* ========================
  Responsive – スマホ
======================== */
@media (max-width: 600px) {
  h1 {
    font-size: 1.75em;
  }

  .generate-btn {
    font-size: 1.05em;
    padding: 16px;
  }

  .idea-card {
    padding: 22px 18px;
  }

  #ideaCount {
    width: 90px;
  }

  #usecaseLabel {
    width: 100%;
    margin-top: 5px;
    margin-bottom: -8px;
  }

  #usecase {
    width: 100%;
    max-width: 260px;
  }

  .settings-box {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
  }

  .agent-step {
    flex-wrap: wrap;
  }

  .agent-step-done {
    margin-left: 36px;
  }

  .idea-actions {
    gap: 6px;
  }

  .fb-btn {
    padding: 8px 12px;
    font-size: 0.8em;
  }
}