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

:root {
  --color-primary: #2563eb;
  --color-bg: #f8fafc;
  --color-surface: #ffffff;
  --color-text: #1e293b;
  --color-muted: #64748b;
  --radius: 0.75rem;
  --shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
}

body {
  font-family: system-ui, -apple-system, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

header {
  background: #5ddfe3;
  color: #fff;
  padding: 0.5rem 1rem;
  display: flex;
  justify-content: center;
  align-items: center;
}

.banner-logo {
  display: block;
  width: min(640px, 100%);
  height: auto;
}

main {
  flex: 1;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.status {
  color: var(--color-muted);
  font-size: 0.95rem;
}

p {
  font-size: 1rem;
  line-height: 1.6;
}

.entry-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  flex: 1;
  gap: 1rem;
}

.entry-section .btn-primary {
  width: min(320px, 100%);
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  padding: 0.875rem 2rem;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  box-shadow: var(--shadow);
  transition: opacity 0.15s;
}

.btn-primary:active {
  opacity: 0.85;
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}

.btn-text {
  background: none;
  border: none;
  color: var(--color-primary);
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  padding: 0;
}

.btn-success {
  background: #15803d;
  color: #ffffff;
  border: none;
  border-radius: calc(var(--radius) / 1.5);
  padding: 0.65rem 1rem;
  font-weight: 600;
  box-shadow: var(--shadow);
}

.btn-danger {
  background: #b91c1c;
  color: #ffffff;
  border: none;
  border-radius: calc(var(--radius) / 1.5);
  padding: 0.65rem 1rem;
  font-weight: 600;
  box-shadow: var(--shadow);
}

.btn-success:disabled,
.btn-danger:disabled {
  opacity: 0.7;
}

.list-header {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.list-header h2 {
  flex: 1;
  font-size: 1.25rem;
  font-weight: 600;
}

.card-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.card {
  background: var(--color-surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.card-clickable {
  cursor: pointer;
  transition: box-shadow 0.15s, transform 0.1s;
}

.card-clickable:hover {
  box-shadow: 0 3px 10px rgba(0,0,0,0.12);
  transform: translateY(-1px);
}

.card-clickable:active {
  transform: translateY(0);
}

.card strong {
  font-size: 1rem;
  color: var(--color-text);
}

.card-meta {
  font-size: 0.875rem;
  color: var(--color-muted);
}

.form-card {
  background: var(--color-surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}

.form-group label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text);
}

.form-group input {
  border: 1px solid #cbd5e1;
  border-radius: calc(var(--radius) / 2);
  padding: 0.625rem 0.75rem;
  font-size: 1rem;
  font-family: inherit;
  color: var(--color-text);
  background: var(--color-bg);
  transition: border-color 0.15s;
}

.form-group select {
  border: 1px solid #cbd5e1;
  border-radius: calc(var(--radius) / 2);
  padding: 0.625rem 0.75rem;
  font-size: 1rem;
  font-family: inherit;
  color: var(--color-text);
  background: var(--color-bg);
  transition: border-color 0.15s;
}

.form-group input:focus {
  outline: none;
  border-color: var(--color-primary);
}

.form-group select:focus {
  outline: none;
  border-color: var(--color-primary);
}

.form-error {
  color: #dc2626;
  font-size: 0.875rem;
}

.form-group-check {
  flex-direction: row;
  align-items: center;
  gap: 0.5rem;
}

.form-group-check input[type="checkbox"] {
  width: 1.125rem;
  height: 1.125rem;
  accent-color: var(--color-primary);
  cursor: pointer;
  flex-shrink: 0;
}