/* 基本的なスタイルを追加 */
body {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* フォーム関連のスタイル */
.form-group {
    margin-bottom: 1rem;
}

.form-control {
    display: block;
    width: 100%;
    padding: 0.375rem 0.75rem;
    font-size: 1rem;
    line-height: 1.5;
    border: 1px solid #ced4da;
    border-radius: 0.25rem;
}

.btn {
    display: inline-block;
    font-weight: 400;
    text-align: center;
    white-space: nowrap;
    vertical-align: middle;
    user-select: none;
    border: 1px solid transparent;
    padding: 0.375rem 0.75rem;
    font-size: 1rem;
    line-height: 1.5;
    border-radius: 0.25rem;
    cursor: pointer;
}

.btn-primary {
    color: #fff;
    background-color: #007bff;
    border-color: #007bff;
}

/* Tailwind互換のクラス */
.min-h-screen {
    min-height: 100vh;
}

.flex {
    display: flex;
}

.flex-col {
    flex-direction: column;
}

.items-center {
    align-items: center;
}

.justify-center {
    justify-content: center;
}

.bg-gray-100 {
    background-color: #f7fafc;
}

.w-full {
    width: 100%;
}

.sm\:max-w-md {
    max-width: 28rem;
}

.mt-6 {
    margin-top: 1.5rem;
}

.px-6 {
    padding-left: 1.5rem;
    padding-right: 1.5rem;
}

.py-4 {
    padding-top: 1rem;
    padding-bottom: 1rem;
}

.bg-white {
    background-color: #fff;
}

.shadow-md {
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

.overflow-hidden {
    overflow: hidden;
}

.sm\:rounded-lg {
    border-radius: 0.5rem;
}

/* ダッシュボード用のTailwindクラス */
.py-12 {
    padding-top: 3rem;
    padding-bottom: 3rem;
}

.max-w-7xl {
    max-width: 80rem;
}

.mx-auto {
    margin-left: auto;
    margin-right: auto;
}

.sm\:px-6 {
    padding-left: 1.5rem;
    padding-right: 1.5rem;
}

.lg\:px-8 {
    padding-left: 2rem;
    padding-right: 2rem;
}

.shadow-sm {
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
}

.p-6 {
    padding: 1.5rem;
}

.text-gray-900 {
    color: #1a202c;
}

.text-gray-800 {
    color: #2d3748;
}

.font-semibold {
    font-weight: 600;
}

.text-xl {
    font-size: 1.25rem;
    line-height: 1.75rem;
}

.leading-tight {
    line-height: 1.25;
}

/* ナビゲーション用のスタイル */
.hidden {
    display: none;
}

.sm\:flex {
    display: flex;
}

.sm\:items-center {
    align-items: center;
}

.sm\:justify-between {
    justify-content: space-between;
}

.sm\:ml-6 {
    margin-left: 1.5rem;
}

.sm\:block {
    display: block;
}

.sm\:hidden {
    display: none;
}

.sm\:flex-1 {
    flex: 1 1 0%;
}

.sm\:text-right {
    text-align: right;
}

.sm\:text-sm {
    font-size: 0.875rem;
    line-height: 1.25rem;
}

.sm\:leading-5 {
    line-height: 1.25rem;
}

.sm\:rounded-md {
    border-radius: 0.375rem;
}

.sm\:border-l {
    border-left-width: 1px;
}

.sm\:border-transparent {
    border-color: transparent;
}

.sm\:px-4 {
    padding-left: 1rem;
    padding-right: 1rem;
}

.sm\:py-2 {
    padding-top: 0.5rem;
    padding-bottom: 0.5rem;
}

.shadow {
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
}