/**
 * ログイン画面専用スタイルシート
 * 保安査察チェックシステム
 */

/* カスタムプロパティ（CSS変数） */
:root {
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --card-bg: rgba(255, 255, 255, 0.95);
    --card-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    --input-focus-color: #667eea;
    --error-color: #dc3545;
    --success-color: #198754;
    --warning-color: #ffc107;
    --border-radius: 16px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ベーススタイル */
body {
    background: var(--primary-gradient);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    min-height: 100vh;
}

/* ログインカード */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.login-card {
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    border-radius: var(--border-radius);
    box-shadow: var(--card-shadow);
    border: 1px solid rgba(255, 255, 255, 0.2);
    max-width: 450px;
    width: 100%;
    overflow: hidden;
    transition: var(--transition);
}

.login-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.15);
}

/* ヘッダー部分 */
.login-header {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    padding: 2rem 1.5rem 1.5rem;
    text-align: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.login-title {
    color: #2d3748;
    font-weight: 600;
    margin-bottom: 0.5rem;
    font-size: 1.75rem;
}

.login-subtitle {
    color: #718096;
    margin-bottom: 0;
    font-size: 0.95rem;
}

.login-icon {
    color: var(--input-focus-color);
    font-size: 2rem;
    margin-bottom: 0.5rem;
    display: block;
}

.login-logo {
    max-width: 180px !important;
    width: 180px !important;
    min-width: 180px !important;
    height: auto !important;
    max-height: 180px !important;
    min-height: auto !important;
    margin-bottom: 1rem !important;
    display: block !important;
    margin-left: auto !important;
    margin-right: auto !important;
    border-radius: 8px !important;
    transition: var(--transition);
    background: transparent !important;
    filter: brightness(0.9) contrast(1.1) !important;
    object-fit: contain !important;
    box-sizing: border-box !important;
    /* 白背景を除去する場合のオプション */
    /* mix-blend-mode: multiply; */
}

.login-logo:hover {
    transform: scale(1.05);
}

/* サーバー環境での確実な適用のための追加ルール - 最高優先度 */
body .login-container .login-card .login-header .login-logo,
body .login-container .login-card .login-header img.login-logo,
body img.login-logo,
.login-header img,
.login-header .login-logo,
img[class*="logo"],
*[class*="login-logo"] {
    max-width: 180px !important;
    width: 180px !important;
    height: auto !important;
    max-height: 180px !important;
    object-fit: contain !important;
    box-sizing: border-box !important;
    transform: none !important;
}

/* モバイル対応の追加ルール - 最高優先度 */
@media (max-width: 576px) {
    body .login-container .login-card .login-header .login-logo,
    body .login-container .login-card .login-header img.login-logo,
    body img.login-logo,
    .login-header img,
    .login-header .login-logo,
    img[class*="logo"],
    *[class*="login-logo"] {
        max-width: 150px !important;
        width: 150px !important;
        max-height: 150px !important;
        transform: none !important;
    }
}

/* フォーム部分 */
.login-form {
    padding: 2rem 1.5rem;
}

/* カスタムフォームコントロール */
.form-floating > .form-control {
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    padding: 1rem 0.75rem;
    font-size: 1rem;
    transition: var(--transition);
    background: rgba(255, 255, 255, 0.8);
}

.form-floating > .form-control:focus {
    border-color: var(--input-focus-color);
    box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.25);
    background: rgba(255, 255, 255, 1);
}

.form-floating > label {
    color: #718096;
    font-weight: 500;
}

/* パスワード表示切替ボタン */
.password-toggle {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    border: none;
    background: none;
    color: #718096;
    font-size: 1.1rem;
    cursor: pointer;
    transition: var(--transition);
    z-index: 10;
}

.password-toggle:hover {
    color: var(--input-focus-color);
}

.password-field-container {
    position: relative;
}

/* ログインボタン */
.btn-login {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
    border-radius: 12px;
    padding: 0.875rem 2rem;
    font-weight: 600;
    font-size: 1.05rem;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.btn-login:hover {
    transform: translateY(-1px);
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.3);
}

.btn-login:active {
    transform: translateY(0);
}

.btn-login.loading {
    pointer-events: none;
    opacity: 0.8;
}

.btn-login .spinner-border {
    width: 1rem;
    height: 1rem;
    margin-right: 0.5rem;
}

/* アラート */
.alert {
    border: none;
    border-radius: 12px;
    padding: 1rem 1.25rem;
    margin-bottom: 1.5rem;
    font-weight: 500;
}

.alert-danger {
    background: linear-gradient(135deg, rgba(220, 53, 69, 0.1) 0%, rgba(220, 53, 69, 0.05) 100%);
    color: #c53030;
    border-left: 4px solid var(--error-color);
}

/* デモ認証情報カード */
.demo-credentials {
    background: linear-gradient(135deg, rgba(25, 135, 84, 0.05) 0%, rgba(25, 135, 84, 0.02) 100%);
    border: 1px solid rgba(25, 135, 84, 0.1) ;
    border-radius: 12px;
    margin-top: 1.5rem;
}

.demo-credentials .card-title {
    color: var(--success-color);
    font-weight: 600;
    margin-bottom: 1rem;
}

.credential-item {
    background: rgba(255, 255, 255, 0.5);
    border-radius: 8px;
    padding: 0.75rem;
    margin-bottom: 0.75rem;
    transition: var(--transition);
}

.credential-item:hover {
    background: rgba(255, 255, 255, 0.8);
    transform: translateY(-1px);
}

.credential-badge {
    font-size: 0.75rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.credential-text {
    font-size: 0.85rem;
    margin-bottom: 0.25rem;
    color: #4a5568;
}

/* レスポンシブ対応 */
@media (max-width: 576px) {
    .login-container {
        padding: 0.5rem;
    }
    
    .login-card {
        border-radius: 12px;
    }
    
    .login-header {
        padding: 1.5rem 1rem 1rem;
    }
    
    .login-form {
        padding: 1.5rem 1rem;
    }
    
    .login-title {
        font-size: 1.5rem;
    }
    
    .login-logo {
        max-width: 150px !important;
        width: 150px !important;
        min-width: 150px !important;
        max-height: 150px !important;
        box-sizing: border-box !important;
    }
}

/* アニメーション */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.login-card {
    animation: fadeInUp 0.6s ease-out;
}

/* フォーカス管理 */
.form-control:focus {
    outline: none;
}

/* ダークモード対応（将来的な拡張用） */
@media (prefers-color-scheme: dark) {
    :root {
        --card-bg: rgba(26, 32, 44, 0.95);
        --card-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    }
    
    .login-title {
        color: #f7fafc;
    }
    
    .login-subtitle {
        color: #a0aec0;
    }
    
    .form-floating > label {
        color: #a0aec0;
    }
    
    .credential-text {
        color: #cbd5e0;
    }
}

/* アクセシビリティ */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms ;
        animation-iteration-count: 1 ;
        transition-duration: 0.01ms ;
    }
}

/* 高コントラストモード */
@media (prefers-contrast: high) {
    .form-floating > .form-control {
        border-width: 3px;
    }
    
    .btn-login {
        border: 2px solid #000;
    }
}