.app-detail-main { flex: 1; padding: 116px 24px 104px; }
.app-detail-container { width: min(100%, 760px); margin: 0 auto; }
.app-detail-heading { margin-bottom: 24px; display: flex; align-items: center; gap: 10px; }
.app-detail-title { min-width: 0; }
.app-detail-title h1 { font-size: 1.35rem; font-weight: 650; }
.app-detail-back { width: 34px; height: 34px; flex: 0 0 auto; display: inline-flex; align-items: center; justify-content: center; border: 1px solid var(--border); border-radius: var(--radius-sm); color: var(--text-secondary); background: var(--surface); }
.app-detail-back:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-soft); }
.app-detail-back:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
.app-detail-back svg { width: 18px; height: 18px; }
.tool-card { min-height: 540px; display: flex; flex-direction: column; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; background: var(--surface); }
.tool-body { min-height: 0; flex: 1; padding: 28px; display: flex; flex-direction: column; justify-content: center; }
.tool-body > * { width: 100%; }
.tool-btn { min-height: 40px; padding: 0 18px; border: 1px solid transparent; border-radius: var(--radius-sm); font: inherit; font-size: 0.85rem; font-weight: 600; cursor: pointer; }
.tool-btn-primary { border-color: var(--primary); color: var(--on-primary); background: var(--primary); }
.tool-btn-primary:hover { background: var(--primary-dark); }
.tool-btn-secondary { border-color: var(--border); color: var(--text); background: var(--bg-secondary); }
.tool-btn-secondary:hover { background: var(--bg-tertiary); }

@media (max-width: 768px) {
    .app-detail-main { padding: 88px 12px calc(96px + env(safe-area-inset-bottom)); }
    .app-detail-heading { margin-bottom: 16px; }
    .app-detail-title h1 { font-size: 1.1rem; }
    .tool-card { min-height: 520px; }
    .tool-body { padding: 20px 14px; }
}

.countdown-app { max-width: 620px; margin: 0 auto; }
.countdown-form { display: grid; grid-template-columns: minmax(0, 1fr) 190px; gap: 12px; padding-bottom: 18px; border-bottom: 1px solid var(--border); }
.countdown-field { min-width: 0; display: flex; flex-direction: column; gap: 7px; }
.countdown-field span, .countdown-group > h2 { color: var(--text-secondary); font-size: 0.82rem; font-weight: 600; }
.countdown-field input { width: 100%; height: 40px; box-sizing: border-box; padding: 0 10px; border: 1px solid var(--border); border-radius: var(--radius-sm); color: var(--text); background: var(--bg-secondary); font: inherit; font-size: 0.86rem; }
.countdown-field input:focus { border-color: var(--primary); outline: 2px solid var(--primary-soft); outline-offset: 1px; }
.countdown-form-actions { grid-column: 1 / -1; display: flex; align-items: center; justify-content: flex-end; gap: 12px; }
.countdown-message { grid-column: 1 / -1; min-height: 1.4em; margin: -4px 0 -8px; color: var(--danger); font-size: 0.8rem; }
.countdown-events { margin-top: 18px; }
.countdown-columns { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; align-items: start; }
.countdown-group { min-width: 0; }
.countdown-group > h2 { margin-bottom: 8px; }
.countdown-list { display: flex; flex-direction: column; gap: 8px; }
.countdown-item { min-height: 82px; display: grid; grid-template-columns: minmax(0, 1fr) 34px; align-items: center; gap: 6px 8px; padding: 10px; border: 1px solid var(--border); border-radius: var(--radius-sm); background: var(--bg-secondary); }
.countdown-item-copy { min-width: 0; }
.countdown-item-copy h3 { overflow: hidden; color: var(--text); font-size: 0.92rem; font-weight: 600; text-overflow: ellipsis; white-space: nowrap; }
.countdown-item-meta { margin-top: 3px; color: var(--text-muted); font-size: 0.76rem; }
.countdown-remaining { grid-column: 1; grid-row: 2; font-size: 0.88rem; font-weight: 650; line-height: 1.4; }
.countdown-group-future .countdown-remaining { color: var(--primary-dark); }
.countdown-group-anniversary .countdown-remaining { color: var(--danger); }
[data-theme="dark"] .countdown-group-future .countdown-remaining { color: var(--primary); }
.countdown-delete { grid-column: 2; grid-row: 1 / span 2; width: 34px; height: 34px; display: inline-flex; align-items: center; justify-content: center; border: none; border-radius: var(--radius-sm); color: var(--text-muted); background: transparent; cursor: pointer; }
.countdown-delete:hover { color: var(--danger); background: var(--surface); }
.countdown-delete:focus-visible { outline: 2px solid var(--primary); outline-offset: 1px; }
.countdown-delete svg { width: 17px; height: 17px; }
.countdown-empty { padding: 28px 12px; border: 1px dashed var(--border); border-radius: var(--radius-sm); color: var(--text-muted); background: var(--bg-secondary); font-size: 0.86rem; text-align: center; }

@media (max-width: 560px) {
    .countdown-form { grid-template-columns: 1fr; }
    .countdown-columns { grid-template-columns: 1fr; gap: 18px; }
}