:root {
  --text: #6b6375;
  --text-h: #08060d;
  --bg: #fff;
  --border: #e5e4e7;
  --code-bg: #f4f3ec;
  --accent: #aa3bff;
  --accent-bg: rgba(170, 59, 255, 0.1);
  --accent-border: rgba(170, 59, 255, 0.5);
  --social-bg: rgba(244, 243, 236, 0.5);
  --shadow:
    rgba(0, 0, 0, 0.1) 0 10px 15px -3px, rgba(0, 0, 0, 0.05) 0 4px 6px -2px;

  --sans: system-ui, 'Segoe UI', Roboto, sans-serif;
  --heading: system-ui, 'Segoe UI', Roboto, sans-serif;
  --mono: ui-monospace, Consolas, monospace;

  font: 18px/145% var(--sans);
  letter-spacing: 0.18px;
  color-scheme: light dark;
  color: var(--text);
  background: var(--bg);
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;

  @media (max-width: 1024px) {
    font-size: 16px;
  }
}

@media (prefers-color-scheme: dark) {
  :root {
    --text: #9ca3af;
    --text-h: #f3f4f6;
    --bg: #16171d;
    --border: #2e303a;
    --code-bg: #1f2028;
    --accent: #c084fc;
    --accent-bg: rgba(192, 132, 252, 0.15);
    --accent-border: rgba(192, 132, 252, 0.5);
    --social-bg: rgba(47, 48, 58, 0.5);
    --shadow:
      rgba(0, 0, 0, 0.4) 0 10px 15px -3px, rgba(0, 0, 0, 0.25) 0 4px 6px -2px;
  }

  #social .button-icon {
    filter: invert(1) brightness(2);
  }
}

#root {
  width: 1126px;
  max-width: 100%;
  margin: 0 auto;
  text-align: center;
  border-inline: 1px solid var(--border);
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  box-sizing: border-box;
}

body {
  margin: 0;
}

h1,
h2 {
  font-family: var(--heading);
  font-weight: 500;
  color: var(--text-h);
}

h1 {
  font-size: 56px;
  letter-spacing: -1.68px;
  margin: 32px 0;
  @media (max-width: 1024px) {
    font-size: 36px;
    margin: 20px 0;
  }
}
h2 {
  font-size: 24px;
  line-height: 118%;
  letter-spacing: -0.24px;
  margin: 0 0 8px;
  @media (max-width: 1024px) {
    font-size: 20px;
  }
}
p {
  margin: 0;
}

code,
.counter {
  font-family: var(--mono);
  display: inline-flex;
  border-radius: 4px;
  color: var(--text-h);
}

code {
  font-size: 15px;
  line-height: 135%;
  padding: 4px 8px;
  background: var(--code-bg);
}
/* ===== Loading ===== */
.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100svh;
  font-size: 18px;
  color: #6b6375;
}

/* ===== Login Page ===== */
.login-page {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100svh;
  padding: 24px;
  box-sizing: border-box;
  background: #f9fafb;
}

.login-box {
  text-align: center;
  max-width: 480px;
  width: 100%;
  background: white;
  border: 1px solid #e5e7eb;
  border-radius: 16px;
  padding: 48px 40px;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
}

.login-title {
  font-size: 1.8rem;
  font-weight: 700;
  color: #1a1a2e;
  margin: 0 0 24px;
}

.login-message {
  font-size: 0.95rem;
  color: #6b7280;
  line-height: 1.8;
  margin: 0 0 36px;
}

.login-btn {
  display: inline-block;
  padding: 14px 52px;
  background: #1e40af;
  color: white;
  font-size: 1rem;
  font-weight: 600;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.2s;
}

.login-btn:hover {
  background: #1d3a99;
}

/* ===== Portal Layout ===== */
.portal {
  display: flex;
  flex-direction: column;
  min-height: 100svh;
  background: #f9fafb;
}

/* ===== Header ===== */
.portal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 32px;
  background: #1a1a2e;
  color: white;
}

.portal-title {
  font-size: 1.3rem;
  font-weight: 700;
  margin: 0;
  color: white;
}

.user-info {
  display: flex;
  align-items: center;
  gap: 16px;
}

.user-email {
  font-size: 0.875rem;
  color: #d1d5db;
}

.signout-btn {
  padding: 6px 16px;
  background: transparent;
  color: white;
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: 6px;
  font-size: 0.85rem;
  cursor: pointer;
  transition: background 0.2s;
}

.signout-btn:hover {
  background: rgba(255, 255, 255, 0.1);
}

/* ===== Main Content ===== */
.portal-main {
  flex: 1;
  padding: 40px 32px;
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  box-sizing: border-box;
}

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

.section-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: #374151;
  margin: 0;
}

.btn-refresh {
  padding: 6px 14px;
  background: transparent;
  border: 1px solid #d1d5db;
  border-radius: 6px;
  font-size: 0.85rem;
  color: #374151;
  cursor: pointer;
  transition: background 0.2s;
}

.btn-refresh:hover:not(:disabled) {
  background: #f3f4f6;
}

.btn-refresh:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* ===== Demo Grid ===== */
.demo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

.demo-card {
  display: flex;
  flex-direction: column;
  background: white;
  border: 1px solid #e5e7eb;
  border-radius: 10px;
  overflow: hidden;
  transition: box-shadow 0.2s, transform 0.2s;
}

.demo-card:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  transform: translateY(-2px);
}

.demo-card--disabled {
  cursor: not-allowed;
  opacity: 0.6;
}

.demo-card--disabled:hover {
  box-shadow: none;
  transform: none;
}

.demo-card--disabled .demo-card-link {
  pointer-events: none;
  cursor: not-allowed;
}

.demo-card-link {
  display: block;
  padding: 20px;
  text-decoration: none;
  color: inherit;
  flex: 1;
}

.demo-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 10px;
}

.demo-card-name {
  font-size: 1rem;
  font-weight: 600;
  color: #111827;
}

.demo-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.tag {
  display: inline-block;
  padding: 2px 8px;
  background: #eff6ff;
  color: #1d4ed8;
  font-size: 0.75rem;
  border-radius: 4px;
}

.demo-card-description {
  font-size: 0.875rem;
  color: #6b7280;
  line-height: 1.5;
  margin: 0;
}

/* ===== EC2 ステータス ===== */
.demo-card-ec2 {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 16px;
  border-top: 1px solid #f3f4f6;
  background: #fafafa;
  gap: 8px;
  min-height: 40px;
}

.ec2-info {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}

.instance-id {
  font-size: 0.7rem;
  color: #9ca3af;
  font-family: monospace;
  white-space: nowrap;
}

.status-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 0.72rem;
  font-weight: 600;
  white-space: nowrap;
}

.status-running   { background: #dcfce7; color: #166534; }
.status-stopped   { background: #fee2e2; color: #991b1b; }
.status-pending   { background: #fef9c3; color: #854d0e; }
.status-stopping  { background: #fef9c3; color: #854d0e; }
.status-unknown   { background: #f3f4f6; color: #9ca3af; }

.ec2-controls {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.btn-ec2 {
  padding: 4px 12px;
  border: none;
  border-radius: 6px;
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.2s;
}

.btn-ec2:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-start {
  background: #166534;
  color: white;
}

.btn-start:hover:not(:disabled) {
  background: #15803d;
}

.btn-stop {
  background: #991b1b;
  color: white;
}

.btn-stop:hover:not(:disabled) {
  background: #dc2626;
}

.ec2-transitioning {
  font-size: 0.78rem;
  color: #854d0e;
}

.ec2-error {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 8px;
  padding: 8px 16px;
  background: #fef2f2;
  border-top: 1px solid #fecaca;
  color: #991b1b;
  font-size: 0.72rem;
  line-height: 1.4;
}

.ec2-error-text {
  word-break: break-word;
}

.ec2-error-close {
  flex-shrink: 0;
  border: none;
  background: transparent;
  color: #991b1b;
  font-size: 1rem;
  line-height: 1;
  cursor: pointer;
  padding: 0 2px;
}

/* ===== Footer ===== */
.portal-footer {
  padding: 16px 32px;
  text-align: center;
  border-top: 1px solid #e5e7eb;
  font-size: 0.8rem;
  color: #9ca3af;
  background: white;
}

.portal-footer p {
  margin: 0;
}

/* ===== (旧テンプレート残骸・使用しない) ===== */
.counter-UNUSED {
  font-size: 16px;
  padding: 5px 10px;
  border-radius: 5px;
  color: var(--accent);
  background: var(--accent-bg);
  border: 2px solid transparent;
  transition: border-color 0.3s;
  margin-bottom: 24px;

  &:hover {
    border-color: var(--accent-border);
  }
  &:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
  }
}

.hero {
  position: relative;

  .base,
  .framework,
  .vite {
    inset-inline: 0;
    margin: 0 auto;
  }

  .base {
    width: 170px;
    position: relative;
    z-index: 0;
  }

  .framework,
  .vite {
    position: absolute;
  }

  .framework {
    z-index: 1;
    top: 34px;
    height: 28px;
    transform: perspective(2000px) rotateZ(300deg) rotateX(44deg) rotateY(39deg)
      scale(1.4);
  }

  .vite {
    z-index: 0;
    top: 107px;
    height: 26px;
    width: auto;
    transform: perspective(2000px) rotateZ(300deg) rotateX(40deg) rotateY(39deg)
      scale(0.8);
  }
}

#center {
  display: flex;
  flex-direction: column;
  gap: 25px;
  place-content: center;
  place-items: center;
  flex-grow: 1;

  @media (max-width: 1024px) {
    padding: 32px 20px 24px;
    gap: 18px;
  }
}

#next-steps {
  display: flex;
  border-top: 1px solid var(--border);
  text-align: left;

  & > div {
    flex: 1 1 0;
    padding: 32px;
    @media (max-width: 1024px) {
      padding: 24px 20px;
    }
  }

  .icon {
    margin-bottom: 16px;
    width: 22px;
    height: 22px;
  }

  @media (max-width: 1024px) {
    flex-direction: column;
    text-align: center;
  }
}

#docs {
  border-right: 1px solid var(--border);

  @media (max-width: 1024px) {
    border-right: none;
    border-bottom: 1px solid var(--border);
  }
}

#next-steps ul {
  list-style: none;
  padding: 0;
  display: flex;
  gap: 8px;
  margin: 32px 0 0;

  .logo {
    height: 18px;
  }

  a {
    color: var(--text-h);
    font-size: 16px;
    border-radius: 6px;
    background: var(--social-bg);
    display: flex;
    padding: 6px 12px;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    transition: box-shadow 0.3s;

    &:hover {
      box-shadow: var(--shadow);
    }
    .button-icon {
      height: 18px;
      width: 18px;
    }
  }

  @media (max-width: 1024px) {
    margin-top: 20px;
    flex-wrap: wrap;
    justify-content: center;

    li {
      flex: 1 1 calc(50% - 8px);
    }

    a {
      width: 100%;
      justify-content: center;
      box-sizing: border-box;
    }
  }
}

/* ===== Tabs ===== */
.portal-tabs {
  display: flex;
  gap: 0;
  border-bottom: 2px solid #e5e7eb;
  padding: 0 32px;
  background: white;
}

.tab-btn {
  padding: 12px 24px;
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  font-size: 0.9rem;
  font-weight: 500;
  color: #6b7280;
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s;
}

.tab-btn:hover {
  color: #1e40af;
}

.tab-active {
  color: #1e40af;
  border-bottom-color: #1e40af;
  font-weight: 600;
}

/* ===== Admin Panel ===== */
.admin-panel {
  width: 100%;
}

.admin-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.admin-error {
  padding: 10px 16px;
  background: #fef2f2;
  border: 1px solid #fecaca;
  border-radius: 8px;
  color: #b91c1c;
  font-size: 0.875rem;
  margin-bottom: 16px;
}

.admin-success {
  padding: 10px 16px;
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
  border-radius: 8px;
  color: #166534;
  font-size: 0.875rem;
  margin-bottom: 16px;
}

.invite-btn {
  padding: 8px 20px;
  background: #1e40af;
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
}

.invite-btn:hover {
  background: #1d3a99;
}

.invite-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.user-table {
  width: 100%;
  border-collapse: collapse;
  background: white;
  border: 1px solid #e5e7eb;
  border-radius: 10px;
  overflow: hidden;
  font-size: 0.875rem;
}

.user-table th {
  background: #f9fafb;
  padding: 12px 16px;
  text-align: left;
  font-weight: 600;
  color: #374151;
  border-bottom: 1px solid #e5e7eb;
}

.user-table td {
  padding: 12px 16px;
  color: #374151;
  border-bottom: 1px solid #f3f4f6;
}

.user-table-last-row td {
  border-bottom: none;
}

.role-badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
}

.role-admin {
  background: #eff6ff;
  color: #1e40af;
}

.role-user {
  background: #f3f4f6;
  color: #4b5563;
}

.status-badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 12px;
  font-size: 0.75rem;
}

.status-confirmed {
  background: #f0fdf4;
  color: #166534;
}

.status-pending {
  background: #fffbeb;
  color: #92400e;
}

.delete-btn {
  padding: 4px 12px;
  background: transparent;
  color: #dc2626;
  border: 1px solid #dc2626;
  border-radius: 6px;
  font-size: 0.8rem;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
}

.delete-btn:hover {
  background: #dc2626;
  color: white;
}

.delete-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.delete-confirm {
  background: #dc2626;
  color: white;
}

/* ===== Modal ===== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
}

.modal {
  background: white;
  border-radius: 12px;
  padding: 32px;
  width: 100%;
  max-width: 440px;
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.16);
}

.modal h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin: 0 0 12px;
  color: #111827;
}

.modal-desc {
  font-size: 0.875rem;
  color: #6b7280;
  margin: 0 0 20px;
  line-height: 1.6;
}

.modal-label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.875rem;
  font-weight: 600;
  color: #374151;
  margin-bottom: 16px;
}

.modal-check {
  flex-direction: row;
  align-items: center;
  gap: 10px;
  font-weight: 500;
}

.modal-input {
  padding: 10px 12px;
  border: 1px solid #d1d5db;
  border-radius: 8px;
  font-size: 0.9rem;
  outline: none;
  transition: border-color 0.2s;
}

.modal-input:focus {
  border-color: #1e40af;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  margin-top: 24px;
}

.modal-cancel {
  padding: 8px 20px;
  background: transparent;
  border: 1px solid #d1d5db;
  border-radius: 8px;
  font-size: 0.875rem;
  color: #374151;
  cursor: pointer;
  transition: background 0.2s;
}

.modal-cancel:hover {
  background: #f9fafb;
}
    position: absolute;
    top: -4.5px;
    border: 5px solid transparent;
  }

  &::before {
    left: 0;
    border-left-color: var(--border);
  }
  &::after {
    right: 0;
    border-right-color: var(--border);
  }
}