:root {
  --bg-primary: #0f1419;
  --bg-secondary: #1a1f26;
  --bg-card: #232b35;
  --text-primary: #f5f5f5;
  --text-secondary: #9ca3af;
  --accent-red: #ef4444;
  --accent-orange: #f97316;
  --accent-yellow: #eab308;
  --accent-green: #22c55e;
  --accent-blue: #3b82f6;
  --accent-purple: #a855f7;
  --border-color: #374151;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Noto Sans JP', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
}

/* ========================================
   Header
   ======================================== */
.header {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  padding: 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
}

.logo {
  font-family: 'Outfit', sans-serif;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
}

.logo span {
  color: var(--accent-red);
}

.page-title {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
}

/* Header Navigation */
.header-nav {
  display: flex;
  gap: 0.5rem;
}

.nav-link {
  padding: 0.5rem 0.875rem;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-secondary);
  font-size: 0.8rem;
  font-weight: 500;
  text-decoration: none;
  transition: all 0.2s;
}

.nav-link:hover {
  border-color: var(--accent-blue);
  color: var(--accent-blue);
}

.nav-link.active {
  background: var(--accent-red);
  border-color: var(--accent-red);
  color: white;
}

/* ========================================
   Sales Rep Selector
   ======================================== */
.sales-rep-selector {
  background: linear-gradient(135deg, var(--bg-secondary) 0%, rgba(239, 68, 68, 0.1) 100%);
  border-bottom: 1px solid var(--border-color);
  padding: 0.75rem 1rem;
}

.sales-rep-container {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  max-width: 1200px;
  margin: 0 auto;
}

.sales-rep-label {
  font-size: 0.85rem;
  font-weight: 600;
  white-space: nowrap;
  color: var(--text-primary);
}

.sales-rep-select {
  flex: 1;
  max-width: 300px;
  padding: 0.625rem 2.5rem 0.625rem 1rem;
  background: var(--bg-card);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%239ca3af' stroke-width='2'%3E%3Cpolyline points='6,9 12,15 18,9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.5rem center;
  background-size: 18px;
  border: 2px solid var(--accent-red);
  border-radius: 10px;
  color: var(--text-primary);
  font-size: 0.9rem;
  font-weight: 500;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.2s;
  -webkit-appearance: none;
  appearance: none;
}

.sales-rep-select:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.3);
}

.sales-rep-select:hover {
  background-color: var(--bg-secondary);
}

/* ========================================
   Tab Navigation (Mobile)
   ======================================== */
.tab-nav {
  display: flex;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
}

.tab-btn {
  flex: 1;
  padding: 0.875rem;
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  position: relative;
  font-family: inherit;
}

.tab-btn.active {
  color: var(--accent-red);
}

.tab-btn.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--accent-red);
}

/* ========================================
   Tab Content
   ======================================== */
.tab-content {
  display: none;
  padding: 1rem;
}

.tab-content.active {
  display: block;
}

/* ========================================
   Card
   ======================================== */
.card {
  background: var(--bg-card);
  border-radius: 16px;
  padding: 1.25rem;
  box-shadow: var(--shadow);
  margin-bottom: 1rem;
}

.card-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.card-title::before {
  content: '';
  width: 4px;
  height: 18px;
  background: var(--accent-red);
  border-radius: 2px;
}

/* Card Header with Refresh Button */
.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.card-header .card-title {
  margin-bottom: 0;
}

/* Refresh Button */
.refresh-btn {
  padding: 0.5rem 0.75rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-secondary);
  font-size: 0.75rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  font-family: inherit;
}

.refresh-btn:hover {
  background: var(--bg-primary);
  border-color: var(--accent-blue);
  color: var(--accent-blue);
}

.refresh-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ========================================
   Form Styles
   ======================================== */
.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.form-select,
.form-input,
.form-textarea {
  width: 100%;
  padding: 0.875rem 1rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  color: var(--text-primary);
  font-size: 16px;
  font-family: inherit;
  transition: border-color 0.2s, box-shadow 0.2s;
  -webkit-appearance: none;
  appearance: none;
}

.form-select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%239ca3af' stroke-width='2'%3E%3Cpolyline points='6,9 12,15 18,9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  background-size: 20px;
  padding-right: 2.5rem;
}

.form-select:focus,
.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.form-textarea {
  min-height: 100px;
  resize: vertical;
}

/* ========================================
   Approach Buttons (訪問/電話/メール)
   ======================================== */
.approach-types {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
}

.approach-btn {
  padding: 0.75rem 0.5rem;
  background: var(--bg-secondary);
  border: 2px solid var(--border-color);
  border-radius: 12px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.3rem;
}

.approach-btn.active {
  background: rgba(239, 68, 68, 0.15);
  border-color: var(--accent-red);
  color: var(--accent-red);
}

.approach-btn svg {
  width: 22px;
  height: 22px;
}

.approach-btn span {
  font-size: 0.75rem;
  font-weight: 500;
}

/* ========================================
   Met Buttons (会えた？)
   ======================================== */
.met-buttons {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
}

.met-btn {
  padding: 0.875rem;
  background: var(--bg-secondary);
  border: 2px solid var(--border-color);
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  justify-content: center;
  align-items: center;
}

.met-btn.yes.active {
  border-color: var(--accent-blue);
  background: rgba(59, 130, 246, 0.15);
}

.met-btn.triangle.active {
  border-color: var(--accent-yellow);
  background: rgba(234, 179, 8, 0.15);
}

.met-btn.no.active {
  border-color: var(--accent-orange);
  background: rgba(249, 115, 22, 0.15);
}

.met-btn svg {
  width: 32px;
  height: 32px;
}

.met-btn.yes svg {
  color: var(--accent-blue);
}

.met-btn.triangle svg {
  color: var(--accent-yellow);
}

.met-btn.no svg {
  color: var(--accent-orange);
}

/* ========================================
   Reaction Buttons (相手の反応)
   ======================================== */
.reaction-buttons {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
}

.reaction-btn {
  padding: 0.625rem 0.5rem;
  background: var(--bg-secondary);
  border: 2px solid var(--border-color);
  border-radius: 10px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.2rem;
  font-size: 0.75rem;
}

.reaction-btn .emoji {
  font-size: 1.25rem;
}

.reaction-btn.active.good {
  background: rgba(34, 197, 94, 0.15);
  border-color: var(--accent-green);
  color: var(--accent-green);
}

.reaction-btn.active.normal {
  background: rgba(234, 179, 8, 0.15);
  border-color: var(--accent-yellow);
  color: var(--accent-yellow);
}

.reaction-btn.active.bad {
  background: rgba(239, 68, 68, 0.15);
  border-color: var(--accent-red);
  color: var(--accent-red);
}

/* ========================================
   Submit Button
   ======================================== */
.submit-btn {
  width: 100%;
  padding: 1rem;
  background: linear-gradient(135deg, var(--accent-red) 0%, #dc2626 100%);
  border: none;
  border-radius: 12px;
  color: white;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
  margin-top: 0.5rem;
  font-family: inherit;
}

.submit-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ========================================
   Activity List
   ======================================== */
.activity-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.activity-item {
  background: var(--bg-secondary);
  border-radius: 12px;
  padding: 1rem;
}

.activity-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.activity-date {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.activity-type {
  padding: 0.2rem 0.6rem;
  border-radius: 6px;
  font-size: 0.7rem;
  font-weight: 600;
}

.activity-type.visit {
  background: rgba(34, 197, 94, 0.2);
  color: var(--accent-green);
}

.activity-type.phone {
  background: rgba(249, 115, 22, 0.2);
  color: var(--accent-orange);
}

.activity-type.email {
  background: rgba(168, 85, 247, 0.2);
  color: var(--accent-purple);
}

.activity-reaction {
  padding: 0.2rem 0.5rem;
  border-radius: 6px;
  font-size: 0.7rem;
  font-weight: 600;
  margin-left: auto;
}

.activity-reaction.good {
  background: rgba(34, 197, 94, 0.2);
  color: var(--accent-green);
}

.activity-reaction.normal {
  background: rgba(234, 179, 8, 0.2);
  color: var(--accent-yellow);
}

.activity-reaction.bad {
  background: rgba(239, 68, 68, 0.2);
  color: var(--accent-red);
}

.activity-company {
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 0.25rem;
}

.activity-contact {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.activity-sales-rep {
  padding: 0.2rem 0.5rem;
  border-radius: 6px;
  font-size: 0.7rem;
  font-weight: 500;
  background: rgba(59, 130, 246, 0.2);
  color: var(--accent-blue);
}

.activity-note {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-top: 0.5rem;
  padding-top: 0.5rem;
  border-top: 1px solid var(--border-color);
  line-height: 1.5;
}

/* ========================================
   Loading & Empty State
   ======================================== */
.loading,
.empty-state {
  text-align: center;
  padding: 2rem 1rem;
  color: var(--text-secondary);
}

.loading::after {
  content: '';
  display: inline-block;
  width: 18px;
  height: 18px;
  border: 2px solid var(--border-color);
  border-top-color: var(--accent-red);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-left: 0.5rem;
  vertical-align: middle;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* ========================================
   Toast Notification
   ======================================== */
.toast {
  position: fixed;
  bottom: 1.5rem;
  left: 1rem;
  right: 1rem;
  padding: 1rem;
  background: var(--accent-green);
  color: white;
  border-radius: 12px;
  font-weight: 600;
  text-align: center;
  transform: translateY(100px);
  opacity: 0;
  transition: all 0.3s;
  z-index: 1000;
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}

.toast.error {
  background: var(--accent-red);
}

/* ========================================
   Desktop Styles (768px+)
   ======================================== */
@media (min-width: 768px) {
  .header {
    padding: 1rem 2rem;
  }

  .logo {
    font-size: 1.5rem;
  }

  .page-title {
    font-size: 1.1rem;
  }

  .tab-nav {
    display: none;
  }

  .tab-content {
    display: block !important;
    padding: 0;
  }

  .main-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }

  .card {
    padding: 1.5rem;
  }

  .approach-btn svg {
    width: 28px;
    height: 28px;
  }

  .approach-btn span {
    font-size: 0.85rem;
  }

  .met-btn svg {
    width: 40px;
    height: 40px;
  }

  .reaction-btn {
    padding: 0.75rem;
    font-size: 0.85rem;
  }

  .reaction-btn .emoji {
    font-size: 1.5rem;
  }

  .toast {
    left: auto;
    right: 2rem;
    max-width: 300px;
  }
}

/* ========================================
   Authentication Overlay
   ======================================== */
.auth-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--bg-primary);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.auth-box {
  background: var(--bg-card);
  border-radius: 20px;
  padding: 2rem;
  width: 100%;
  max-width: 360px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
  text-align: center;
}

.auth-logo {
  font-family: 'Outfit', sans-serif;
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.auth-logo span {
  color: var(--accent-red);
}

.auth-subtitle {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 2rem;
}

.auth-input {
  width: 100%;
  padding: 1rem;
  background: var(--bg-secondary);
  border: 2px solid var(--border-color);
  border-radius: 12px;
  color: var(--text-primary);
  font-size: 1.25rem;
  text-align: center;
  letter-spacing: 0.5rem;
  font-family: inherit;
  margin-bottom: 1rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.auth-input:focus {
  outline: none;
  border-color: var(--accent-red);
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.2);
}

.auth-input::placeholder {
  letter-spacing: normal;
  font-size: 0.95rem;
}

.auth-btn {
  width: 100%;
  padding: 1rem;
  background: linear-gradient(135deg, var(--accent-red) 0%, #dc2626 100%);
  border: none;
  border-radius: 12px;
  color: white;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
  font-family: inherit;
}

.auth-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(239, 68, 68, 0.4);
}

.auth-error {
  color: var(--accent-red);
  font-size: 0.85rem;
  margin-top: 1rem;
  display: none;
}

.auth-error.show {
  display: block;
  animation: shake 0.3s;
}

@keyframes shake {

  0%,
  100% {
    transform: translateX(0);
  }

  25% {
    transform: translateX(-8px);
  }

  75% {
    transform: translateX(8px);
  }
}

/* ========================================
   Proposal Products (提案商品)
   ======================================== */
.proposal-products {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.proposal-products .loading-small {
  color: var(--text-secondary);
  font-size: 0.85rem;
}

.proposal-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.75rem;
  background: var(--bg-secondary);
  border: 2px solid var(--border-color);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s;
}

.proposal-item:hover {
  border-color: var(--accent-blue);
}

.proposal-item.checked {
  background: rgba(59, 130, 246, 0.15);
  border-color: var(--accent-blue);
}

.proposal-item input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--accent-blue);
  cursor: pointer;
}

.proposal-item label {
  font-size: 0.85rem;
  cursor: pointer;
  color: var(--text-primary);
}

.proposal-other {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem 0;
}

.proposal-other-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
  cursor: pointer;
}

.proposal-other-label input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--accent-purple);
  cursor: pointer;
}

.proposal-other-input {
  flex: 1;
  max-width: 200px;
  padding: 0.5rem 0.75rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 0.85rem;
  font-family: inherit;
  transition: all 0.2s;
}

.proposal-other-input:focus {
  outline: none;
  border-color: var(--accent-purple);
  box-shadow: 0 0 0 3px rgba(168, 85, 247, 0.2);
}

.proposal-other-input:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.no-proposals {
  color: var(--text-secondary);
  font-size: 0.85rem;
  padding: 0.5rem 0;
}