/* ============================================
   運動・体重管理アプリ スタイルシート
   ============================================ */

:root {
    --primary-color: #4A90A4;
    --primary-dark: #357A8C;
    --secondary-color: #7CB342;
    --accent-color: #FF7043;
    --background-color: #F5F7FA;
    --card-background: #FFFFFF;
    --text-color: #333333;
    --text-light: #666666;
    --border-color: #E0E0E0;
    --success-color: #4CAF50;
    --warning-color: #FFC107;
    --danger-color: #F44336;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Hiragino Sans', 'Noto Sans JP', sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
    min-height: 100vh;
}

/* コンテナ */
.container {
    max-width: 480px;
    margin: 0 auto;
    padding: 0 16px;
}

/* ヘッダー */
.header {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    padding: 16px;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.header h1 {
    font-size: 1.25rem;
    font-weight: 600;
    text-align: center;
}

.header-back {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: white;
    text-decoration: none;
    font-size: 1.5rem;
}

/* カード */
.card {
    background: var(--card-background);
    border-radius: 12px;
    padding: 20px;
    margin: 16px 0;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.card-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-color);
    display: flex;
    align-items: center;
    gap: 8px;
}

/* ログイン画面 */
.login-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 20px;
    text-align: center;
}

.login-logo {
    font-size: 4rem;
    margin-bottom: 16px;
}

.login-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--primary-color);
}

.login-subtitle {
    color: var(--text-light);
    margin-bottom: 40px;
}

.google-login-btn {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: white;
    color: var(--text-color);
    border: 1px solid var(--border-color);
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.google-login-btn:hover {
    background: #f8f8f8;
    box-shadow: 0 4px 8px rgba(0,0,0,0.15);
}

.google-login-btn img {
    width: 20px;
    height: 20px;
}

/* ボタン */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.2s;
    text-align: center;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-dark);
}

.btn-secondary {
    background: var(--secondary-color);
    color: white;
}

.btn-block {
    display: block;
    width: 100%;
}

.btn-lg {
    padding: 16px 32px;
    font-size: 1.1rem;
}

/* フォーム */
.form-group {
    margin-bottom: 16px;
}

.form-label {
    display: block;
    font-weight: 500;
    margin-bottom: 6px;
    color: var(--text-color);
}

.form-control {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.2s;
}

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

/* プログレスバー */
.progress-container {
    margin: 12px 0;
}

.progress-label {
    display: flex;
    justify-content: space-between;
    margin-bottom: 6px;
    font-size: 0.875rem;
}

.progress-bar {
    height: 12px;
    background: var(--border-color);
    border-radius: 6px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 6px;
    transition: width 0.5s ease;
}

.progress-fill.complete {
    background: linear-gradient(90deg, var(--success-color), #66BB6A);
}

.progress-fill.over {
    background: linear-gradient(90deg, var(--accent-color), #FF8A65);
}

/* メニューグリッド */
.menu-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin: 16px 0;
}

.menu-item {
    background: var(--card-background);
    border-radius: 12px;
    padding: 20px 16px;
    text-align: center;
    text-decoration: none;
    color: var(--text-color);
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
    transition: all 0.2s;
}

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

.menu-icon {
    font-size: 2rem;
    margin-bottom: 8px;
}

.menu-label {
    font-size: 0.875rem;
    font-weight: 500;
}

/* ナビゲーション */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--card-background);
    display: flex;
    justify-content: space-around;
    padding: 8px 0;
    box-shadow: 0 -2px 8px rgba(0,0,0,0.1);
    z-index: 100;
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-decoration: none;
    color: var(--text-light);
    padding: 8px 16px;
    font-size: 0.75rem;
    transition: color 0.2s;
}

.nav-item.active,
.nav-item:hover {
    color: var(--primary-color);
}

.nav-icon {
    font-size: 1.5rem;
    margin-bottom: 4px;
}

/* 入力項目グループ */
.exercise-input-group {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
}

.exercise-input-group:last-child {
    border-bottom: none;
}

.exercise-icon {
    font-size: 1.5rem;
    width: 40px;
    text-align: center;
}

.exercise-name {
    flex: 1;
    font-weight: 500;
}

.exercise-input {
    width: 80px;
    padding: 8px;
    text-align: right;
    border: 1px solid var(--border-color);
    border-radius: 6px;
}

.exercise-unit {
    width: 30px;
    font-size: 0.875rem;
    color: var(--text-light);
}

/* アラート */
.alert {
    padding: 12px 16px;
    border-radius: 8px;
    margin: 16px 0;
}

.alert-success {
    background: #E8F5E9;
    color: #2E7D32;
}

.alert-error {
    background: #FFEBEE;
    color: #C62828;
}

/* 日付入力 */
.date-input {
    background: var(--card-background);
    padding: 12px;
    border-radius: 8px;
    margin-bottom: 16px;
}

/* チェックボックス */
.checkbox-group {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.checkbox-item {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 12px;
    background: var(--background-color);
    border-radius: 6px;
    cursor: pointer;
}

.checkbox-item input {
    accent-color: var(--primary-color);
}

/* グラフコンテナ */
.chart-container {
    position: relative;
    height: 300px;
    margin: 16px 0;
}

/* ご褒美画像 */
.reward-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.reward-item {
    position: relative;
    aspect-ratio: 1;
    border-radius: 12px;
    overflow: hidden;
    background: var(--border-color);
}

.reward-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.reward-locked {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #E0E0E0, #BDBDBD);
    color: var(--text-light);
}

.reward-locked .lock-icon {
    font-size: 2rem;
    margin-bottom: 8px;
}

.viewed-badge {
    position: absolute;
    top: 8px;
    right: 8px;
    background: var(--success-color);
    color: white;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.75rem;
}

/* パディング調整（ボトムナビ用） */
.main-content {
    padding-bottom: 80px;
}

/* レスポンシブ */
@media (max-width: 360px) {
    .menu-grid {
        grid-template-columns: 1fr;
    }
}