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

:root {
  --green: #00C853;
  --mint: #69F0AE;
  --dark-green: #1B5E20;
  --bg: #F5FFF8;
  --text: #1A2E1C;
  --text-sub: #5A7060;
  --white: #FFFFFF;
  --card-bg: #FFFFFF;
  --shadow: 0 4px 24px rgba(0,200,83,0.10);
  --radius: 12px;
  --danger: #D32F2F;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Hiragino Kaku Gothic ProN', 'Meiryo', 'Yu Gothic', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

/* NAV */
nav {
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(0,200,83,0.15);
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 0 24px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-weight: 700;
  font-size: 18px;
  color: var(--dark-green);
  text-decoration: none;
}

.nav-logo span { color: var(--green); }

.nav-links { display: flex; gap: 12px; align-items: center; }

.nav-links a {
  color: var(--text-sub);
  text-decoration: none;
  font-size: 14px;
  padding: 6px 12px;
  border-radius: 8px;
  transition: background 0.2s;
}

.nav-links a:hover { background: rgba(0,200,83,0.08); color: var(--green); }

/* BUTTONS */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all 0.2s;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--green), #00A843);
  color: #fff;
  box-shadow: 0 2px 12px rgba(0,200,83,0.35);
}

.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 4px 18px rgba(0,200,83,0.45); }

.btn-secondary {
  background: #fff;
  color: var(--green);
  border: 2px solid var(--green);
}

.btn-secondary:hover { background: rgba(0,200,83,0.06); }

.btn-ghost {
  background: transparent;
  color: var(--text-sub);
}

.btn-ghost:hover { background: rgba(0,0,0,0.05); }

.btn-danger {
  background: var(--danger);
  color: #fff;
}

.btn-danger:hover { opacity: 0.88; }

.btn-google {
  background: #fff;
  color: #444;
  border: 1px solid #ddd;
  box-shadow: 0 1px 6px rgba(0,0,0,0.1);
  width: 100%;
  font-size: 15px;
  padding: 12px;
}

.btn-google:hover { background: #f8f8f8; }

.btn-lg { padding: 14px 32px; font-size: 16px; border-radius: 12px; }
.btn-sm { padding: 6px 14px; font-size: 13px; }
.btn-block { width: 100%; }

/* CARD */
.card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px;
}

/* FORM */
.form-group { margin-bottom: 16px; }

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-sub);
  margin-bottom: 6px;
}

.form-input {
  width: 100%;
  padding: 12px 14px;
  border: 1.5px solid #DDE;
  border-radius: 10px;
  font-size: 15px;
  outline: none;
  transition: border-color 0.2s;
  background: #fff;
  color: var(--text);
}

.form-input:focus { border-color: var(--green); }

/* DIVIDER */
.divider {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 20px 0;
  color: var(--text-sub);
  font-size: 13px;
}

.divider::before, .divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: #E0E0E0;
}

/* ALERT */
.alert {
  padding: 12px 16px;
  border-radius: 10px;
  font-size: 14px;
  margin-bottom: 16px;
}

.alert-error { background: #FFEBEE; color: var(--danger); border: 1px solid #FFCDD2; }
.alert-success { background: #E8F5E9; color: var(--dark-green); border: 1px solid #C8E6C9; }
.alert-info { background: #E3F2FD; color: #1565C0; border: 1px solid #BBDEFB; }

/* BADGE */
.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
}

.badge-green { background: #E8F5E9; color: var(--dark-green); }
.badge-blue { background: #E3F2FD; color: #1565C0; }
.badge-orange { background: #FFF3E0; color: #E65100; }
.badge-gray { background: #F5F5F5; color: #616161; }

/* SPINNER */
.spinner {
  width: 20px; height: 20px;
  border: 2px solid rgba(255,255,255,0.4);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  display: inline-block;
}

.spinner-green {
  border: 2px solid rgba(0,200,83,0.2);
  border-top-color: var(--green);
}

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

/* PAGE CENTER (auth pages) */
.page-center {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.auth-box {
  background: #fff;
  border-radius: 20px;
  padding: 40px;
  width: 100%;
  max-width: 420px;
  box-shadow: 0 8px 48px rgba(0,200,83,0.12);
}

.auth-logo {
  text-align: center;
  margin-bottom: 28px;
}

.auth-logo h1 {
  font-size: 22px;
  color: var(--dark-green);
  font-weight: 700;
}

.auth-logo h1 span { color: var(--green); }

.auth-logo p {
  font-size: 14px;
  color: var(--text-sub);
  margin-top: 4px;
}

.auth-tabs {
  display: flex;
  border-bottom: 2px solid #E0E0E0;
  margin-bottom: 24px;
}

.auth-tab {
  flex: 1;
  text-align: center;
  padding: 10px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-sub);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: color 0.2s, border-color 0.2s;
}

.auth-tab.active { color: var(--green); border-color: var(--green); }

.auth-form { display: none; }
.auth-form.active { display: block; }

/* DASHBOARD LAYOUT */
.dashboard-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  min-height: 100vh;
}

.sidebar {
  background: #fff;
  border-right: 1px solid rgba(0,200,83,0.12);
  padding: 24px 0;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}

.sidebar-section {
  padding: 0 16px;
  margin-bottom: 8px;
}

.sidebar-label {
  font-size: 11px;
  font-weight: 700;
  color: var(--text-sub);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 8px 12px 4px;
}

.sidebar-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 10px;
  color: var(--text);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s;
}

.sidebar-item:hover { background: rgba(0,200,83,0.07); }
.sidebar-item.active { background: rgba(0,200,83,0.12); color: var(--dark-green); font-weight: 600; }

.sidebar-icon { font-size: 18px; width: 24px; text-align: center; }

.main-content { padding: 32px; overflow-y: auto; }

/* SECTION HEADER */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.section-title { font-size: 20px; font-weight: 700; }
.section-sub { font-size: 14px; color: var(--text-sub); margin-top: 2px; }

/* STAT CARDS */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 16px;
  margin-bottom: 28px;
}

.stat-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
}

.stat-value { font-size: 28px; font-weight: 700; color: var(--dark-green); }
.stat-label { font-size: 13px; color: var(--text-sub); margin-top: 4px; }

/* PLAN CARD */
.plan-card {
  background: linear-gradient(135deg, var(--dark-green), #2E7D32);
  color: #fff;
  border-radius: 16px;
  padding: 24px;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.plan-name { font-size: 22px; font-weight: 700; }
.plan-desc { font-size: 14px; opacity: 0.8; margin-top: 4px; }

/* TABLE */
.table-wrap { overflow-x: auto; }

table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { padding: 12px 16px; text-align: left; border-bottom: 1px solid #F0F0F0; }
th { font-weight: 600; color: var(--text-sub); font-size: 12px; text-transform: uppercase; }
tr:last-child td { border-bottom: none; }
tr:hover td { background: #F9FFF9; }

/* PRICING */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
  margin-top: 32px;
}

.pricing-card {
  background: #fff;
  border-radius: 16px;
  padding: 28px;
  box-shadow: var(--shadow);
  border: 2px solid transparent;
  display: flex;
  flex-direction: column;
}

.pricing-card.featured {
  border-color: var(--green);
  position: relative;
}

.pricing-card.featured::before {
  content: 'おすすめ';
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--green);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  padding: 3px 14px;
  border-radius: 20px;
}

.pricing-plan-name { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.pricing-price { font-size: 32px; font-weight: 700; color: var(--dark-green); }
.pricing-price span { font-size: 14px; font-weight: 400; color: var(--text-sub); }
.pricing-features { list-style: none; margin: 20px 0; flex: 1; }
.pricing-features li { padding: 7px 0; font-size: 14px; color: var(--text); border-bottom: 1px solid #F0F0F0; }
.pricing-features li::before { content: '✓ '; color: var(--green); font-weight: 700; }

/* TOGGLE (billing period) */
.toggle-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 8px;
  font-size: 14px;
}

.toggle {
  width: 48px; height: 26px;
  background: #DDD;
  border-radius: 13px;
  position: relative;
  cursor: pointer;
  transition: background 0.2s;
  border: none;
  outline: none;
}

.toggle.on { background: var(--green); }

.toggle::after {
  content: '';
  position: absolute;
  width: 20px; height: 20px;
  border-radius: 50%;
  background: #fff;
  top: 3px; left: 3px;
  transition: transform 0.2s;
  box-shadow: 0 1px 4px rgba(0,0,0,0.2);
}

.toggle.on::after { transform: translateX(22px); }

/* MODAL */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s;
}

.modal-overlay.open { opacity: 1; pointer-events: all; }

.modal {
  background: #fff;
  border-radius: 16px;
  padding: 32px;
  width: 100%;
  max-width: 440px;
  box-shadow: 0 24px 64px rgba(0,0,0,0.15);
  transform: translateY(20px);
  transition: transform 0.2s;
}

.modal-overlay.open .modal { transform: translateY(0); }

.modal-title { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.modal-body { font-size: 14px; color: var(--text-sub); margin-bottom: 24px; }
.modal-actions { display: flex; gap: 10px; justify-content: flex-end; }

/* RESPONSIVE */
@media (max-width: 768px) {
  .dashboard-layout { grid-template-columns: 1fr; }
  .sidebar { display: none; }
  .main-content { padding: 20px 16px; }
  .auth-box { padding: 28px 20px; }
  .plan-card { flex-direction: column; }
}