.tool-container { max-width: 560px; margin: 0 auto; padding: 20px 16px 60px; }
.tool-header { text-align: center; padding: 40px 0 24px; }
.tool-icon { font-size: 3rem; margin-bottom: 12px; }
.tool-header h1 { font-size: 1.8rem; margin-bottom: 8px; }
.subtitle { color: var(--accent-color); font-size: 0.95rem; }
.primary-btn { display: block; width: 100%; padding: 14px; background: var(--primary-color); color: #fff; border: none; border-radius: 12px; font-size: 1rem; font-weight: 600; cursor: pointer; margin-bottom: 12px; transition: opacity 0.2s; }
.primary-btn:hover { opacity: 0.85; }
.secondary-btn { display: block; width: 100%; padding: 12px; background: transparent; color: var(--text-color); border: 2px solid var(--input-border); border-radius: 12px; font-size: 0.95rem; cursor: pointer; }
.dday-form { display: flex; flex-direction: column; gap: 10px; margin-bottom: 20px; }
.dday-form input { padding: 12px 14px; background: var(--input-bg); border: 1px solid var(--input-border); border-radius: 10px; color: var(--text-color); font-size: 1rem; }
.dday-list { display: flex; flex-direction: column; gap: 10px; margin-bottom: 28px; }
.dday-item { background: var(--card-bg); border-radius: 12px; padding: 14px 16px; display: flex; justify-content: space-between; align-items: center; }
.dday-info { display: flex; flex-direction: column; gap: 4px; }
.dday-name { font-weight: 700; font-size: 1rem; }
.dday-date { font-size: 0.82rem; opacity: 0.6; }
.dday-right { display: flex; align-items: center; gap: 10px; }
.dday-badge { font-size: 1.1rem; font-weight: 900; padding: 4px 12px; border-radius: 20px; }
.dday-badge.today { background: #fdcb6e; color: #2d3436; }
.dday-badge.future { background: var(--primary-color); color: #fff; }
.dday-badge.past { background: var(--input-border); color: var(--text-color); opacity: 0.7; }
.dday-del { background: none; border: none; color: var(--text-color); opacity: 0.4; cursor: pointer; font-size: 1rem; padding: 4px; }
.dday-del:hover { opacity: 1; }
.empty-msg { text-align: center; opacity: 0.5; padding: 20px 0; }
.section-title { font-size: 1rem; font-weight: 700; margin-bottom: 14px; opacity: 0.8; }
.date-diff-section { background: var(--card-bg); border-radius: 16px; padding: 20px; margin-bottom: 20px; }
.date-diff-form { display: flex; align-items: center; gap: 8px; margin-bottom: 12px; }
.date-diff-form input { flex: 1; padding: 10px; background: var(--input-bg); border: 1px solid var(--input-border); border-radius: 8px; color: var(--text-color); font-size: 0.9rem; }
.diff-arrow { font-size: 1.2rem; opacity: 0.6; }
.diff-result { text-align: center; margin-top: 14px; }
.diff-num { font-size: 2.5rem; font-weight: 900; color: var(--primary-color); }
.diff-sub { font-size: 0.9rem; opacity: 0.7; margin-top: 4px; }
.recommend-section { margin: 8px 0 16px; }
.recommend-title { text-align: center; font-size: 0.9rem; opacity: 0.7; margin-bottom: 12px; }
.recommend-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; }
.recommend-btn { display: flex; flex-direction: column; align-items: center; gap: 4px; padding: 12px 4px; background: var(--card-bg); border-radius: 10px; text-decoration: none; color: var(--text-color); font-size: 0.8rem; transition: background 0.2s; }
.recommend-btn:hover { background: var(--input-bg); }
.rec-icon { font-size: 1.4rem; }