/* Google FontsからNoto Sans JPを読み込む */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@400;500;700&display=swap');
@import url('pages/home.css');
@import url('components/nav.css');
@import url('components/animations.css');

/* --- 基本設定と変数 --- */
:root {
    --font-family: 'Noto Sans JP', sans-serif;
    --background-color: #f8f9fa;
    --card-background-color: #ffffff;
    --text-color: #343a40;
    --primary: #007bff;
    --primary-hover: #0069d9;
    --secondary: #6c757d;
    --border-color: #dee2e6;
    --border-radius: 0.75rem;
    --box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.05);
    --line-height: 1.7;
}

/* --- 基本レイアウト --- */
html { 
    scroll-behavior: smooth;
    font-size: 16px;
}
body { 
    background-color: var(--background-color); 
    color: var(--text-color); 
    line-height: var(--line-height);
    font-weight: 400;
}
main.container, .container {
    max-width: 800px;
    padding: 2rem 1rem;
}
h1,h2,h3,h4,h5,h6 { 
    font-weight: 700; 
    color: #212529;
    line-height: 1.4;
}
article {
    background-color: var(--card-background-color); 
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow); 
    padding: 2rem; 
    border: 1px solid var(--border-color);
    margin-bottom: 2rem;
}

/* --- ナビゲーション --- */
/* PC用トップナビゲーション */
nav.container-fluid {
    border-bottom: 1px solid var(--border-color); 
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px); 
    position: sticky; 
    top: 0; 
    z-index: 100;
    padding: 0.5rem 0; /* ▼▼▼ 上下の余白を小さくしました ▼▼▼ */
}
nav .container { 
    display: flex; 
    justify-content: space-between; 
    align-items: center;
    max-width: 1000px;
    padding: 0 1rem; /* 横のpaddingを調整 */
}
.primary-navigation {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    list-style: none;
    margin: 0;
}

/* スマホ用フッターナビゲーション */
.footer-nav {
    display: none;
    position: fixed;
    bottom: 0; left: 0; right: 0;
    width: 100%;
    height: 60px;
    background-color: var(--pico-background-color);
    border-top: 1px solid var(--pico-card-border-color);
    box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
    z-index: 1000;
}
.footer-nav a {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    flex-grow: 1;
    color: var(--secondary);
    text-decoration: none;
    font-size: 0.75rem;
    padding-top: 8px;
}
.footer-nav a.active { color: var(--primary); }
.footer-nav a svg {
    width: 24px; height: 24px; margin-bottom: 2px;
    stroke-width: 2; stroke: currentColor; fill: none;
    stroke-linecap: round; stroke-linejoin: round;
}

/* --- ダッシュボードページ専用 --- */
.dashboard-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
}
.dashboard-card h3 {
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.75rem;
}
.focus-subject-group { margin-bottom: 2rem; }
.focus-task-item { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 1rem; }
.task-icon { font-size: 1.5rem; }
.task-details strong { display: block; }
.progress-group { margin-bottom: 1rem; }
progress { width: 100%; }

/* --- 学習記録ページ専用 --- */
.calendar-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1.5rem; }
.calendar-header h3, .calendar-header a { margin: 0; }
.calendar-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 0.5rem; }
.day-header { text-align: center; font-weight: 500; font-size: 0.9rem; color: var(--secondary); }
.day { aspect-ratio: 1 / 1; border: 1px solid var(--border-color); border-radius: 0.25rem; padding: 0.25rem; font-size: 0.8rem; opacity: 0.5; }
.day.is-this-month { opacity: 1; cursor: pointer; transition: transform 0.1s ease-in-out; }
.day.is-this-month:hover { transform: scale(1.05); border-color: var(--primary); }
.day.is-today { font-weight: bold; border: 2px solid var(--primary); }
.day.study-level-0 { background-color: #ebedf0; }
.day.study-level-1 { background-color: #9be9a8; }
.day.study-level-2 { background-color: #40c463; }
.day.study-level-3 { background-color: #30a14e; }
.day.study-level-4 { background-color: #216e39; }
.day.study-level-5 { background: linear-gradient(135deg, #ffd700, #ffb300); }

/* --- 学習マップページ専用 --- */
.tabs { display: flex; flex-wrap: wrap; border-bottom: 2px solid var(--border-color); margin-bottom: 2rem; }
.tab { padding: 0.75rem 1.25rem; cursor: pointer; border: none; background-color: transparent; color: var(--secondary); font-weight: 500; border-bottom: 2px solid transparent; margin-bottom: -2px; }
.tab.active { color: var(--primary); border-bottom-color: var(--primary); }
.tab-content { display: none; }
.tab-content.active { display: block; }
.level-group { margin-bottom: 3rem; }
.category-group { margin-bottom: 2rem; }
.choice-radio-label:has(input:checked) {
    border-color: var(--primary);
    background-color: var(--primary-light, #e6f2ff);
    color: var(--primary-dark, #0056b3);
    font-weight: bold;
}

/* ========================================
   スマホ用の上書きスタイル
   ======================================== */
@media (max-width: 768px) {
    html {
        font-size: 15px;
    }
    .primary-navigation {
        display: none;
    }
    .footer-nav {
        display: flex;
    }
    body {
        padding-bottom: 60px;
    }
    .dashboard-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    /* 学習記録モーダルのスマホ用スタイル */
    .subject-log-row { grid-template-columns: 1fr; gap: 0.25rem; margin-bottom: 1rem; }
    .subject-label { margin-bottom: 0; }
    .time-controls { display: flex; justify-content: space-between; align-items: center; }
    .time-display { font-size: 1.2rem; font-weight: 500; }
    .time-btn { padding: 0.75rem; }
}