/* Mobile responsive enhancements */
@media (max-width: 640px) {
    .container {
        margin: 0;
        padding: 12px;
        border-radius: 0;
        box-shadow: none;
    }

    header {
        align-items: stretch;
        gap: 12px;
    }

    h1 {
        font-size: 1.6em;
    }

    .header-controls {
        width: 100%;
        align-items: stretch;
    }

    .auth-controls {
        justify-content: space-between;
        flex-wrap: wrap;
        gap: 8px;
    }

    .auth-status {
        font-size: 0.85em;
    }

    .date-selector {
        flex-direction: column;
        align-items: stretch;
        gap: 8px;
    }

    .date-navigation {
        width: 100%;
        justify-content: space-between;
        gap: 8px;
    }

    .nav-btn,
    .today-btn {
        flex: 1;
        padding: 10px 0;
    }

    .date-selector input {
        width: 100%;
        font-size: 14px;
    }

    .header-row,
    .time-entry,
    .summary-row {
        grid-template-columns: minmax(0, 1fr) 56px minmax(0, 1fr);
    }

    .header-row > div,
    .summary-row > div {
        padding: 10px 8px;
        font-size: 0.9em;
    }

    .time-slot-container {
        padding: 6px 4px;
        gap: 2px;
    }

    .time-slot-container .time-label {
        font-size: 12px;
    }

    .input-field {
        padding: 6px 8px;
        font-size: 14px;
    }

    .actual-field-container {
        padding: 6px 8px;
        gap: 6px;
    }

    .timer-result-input {
        padding: 6px 8px;
        font-size: 13px;
    }

    .timer-btn {
        width: 28px;
        height: 28px;
        font-size: 11px;
    }

    .timer-display {
        font-size: 10px;
        min-width: 56px;
    }

    .activity-log-btn {
        width: 40px;
        height: 40px;
        font-size: 18px;
        left: calc(100% - 24px);
    }

    .analysis-row {
        grid-template-columns: 64px 1fr;
    }

    .analysis-label {
        padding: 10px 6px;
        font-size: 0.85em;
    }

    .analysis-content {
        flex-wrap: wrap;
        gap: 12px;
    }

    .analysis-item {
        min-width: 120px;
    }

    .actions {
        gap: 10px;
    }

    .actions button {
        width: 100%;
        max-width: 320px;
    }

    .modal-content {
        width: 94%;
        max-height: 90vh;
    }

    .modal-header,
    .modal-body {
        padding: 16px;
    }

    .modal-header h3 {
        font-size: 1.25em;
    }

    .form-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .form-actions .save-btn,
    .form-actions .cancel-btn {
        width: 100%;
    }

    .schedule-preview {
        padding: 12px;
    }

    .plan-controls-row {
        align-items: stretch;
    }

    .plan-tabs {
        flex-wrap: wrap;
    }

    .plan-tab {
        flex: 1 1 120px;
        text-align: center;
    }

    .inline-plan-input-row {
        grid-template-columns: 1fr;
    }

    .inline-plan-add-btn,
    .inline-plan-sync-btn {
        width: 100%;
    }

    .inline-plan-sub-row {
        grid-template-columns: 1fr;
    }

    .inline-plan-sub-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .inline-plan-sub-actions button {
        width: 100%;
    }

    .sub-activities-list {
        overflow-x: auto;
    }

    .sub-activity-row {
        grid-template-columns: minmax(0, 1fr) minmax(88px, 0.6fr) 56px;
    }

    .sub-activity-row.actual-row {
        grid-template-columns: minmax(0, 1fr) minmax(72px, 0.6fr) minmax(72px, 0.6fr) 48px;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 1.45em;
    }

    .auth-controls {
        flex-direction: column;
        align-items: stretch;
    }

    .nav-btn,
    .today-btn {
        font-size: 13px;
    }

    .header-row,
    .time-entry,
    .summary-row {
        grid-template-columns: minmax(0, 1fr) 52px minmax(0, 1fr);
    }

    .header-row > div,
    .summary-row > div {
        padding: 8px 6px;
        font-size: 0.85em;
    }

    .input-field {
        font-size: 13px;
    }

    .timer-controls {
        gap: 4px;
    }

    .activity-log-btn {
        left: calc(100% - 24px);
    }

    .analysis-row {
        grid-template-columns: 56px 1fr;
    }

    .analysis-content {
        flex-direction: column;
        align-items: stretch;
        gap: 8px;
    }

    .analysis-item {
        width: 100%;
    }

    .schedule-preview {
        padding: 10px;
    }

    .inline-plan-dropdown,
    .plan-activity-menu {
        max-width: 92vw;
    }

    .sub-activity-row,
    .sub-activity-row.actual-row {
        grid-template-columns: 1fr;
    }

    .actual-row-actions {
        flex-direction: row;
        justify-content: flex-start;
        gap: 6px;
    }

    .actual-row-actions .sub-activity-action-btn,
    .actual-row-actions .actual-remove-btn {
        width: auto;
    }
}

@media (max-width: 360px) {
    .header-row,
    .time-entry,
    .summary-row {
        grid-template-columns: minmax(0, 1fr) 48px minmax(0, 1fr);
    }

    .time-slot-container .time-label {
        font-size: 11px;
    }

    .timer-display {
        min-width: 48px;
    }
}

/* --- UX enhancement patch --- */
.status-strip { display:flex; gap:8px; align-items:center; flex-wrap:wrap; }
.status-chip { font-size:12px; padding:4px 8px; border-radius:999px; background:#eef2f7; color:#445; }
.status-success { background:#e8f8ef; color:#1d6f42; }
.status-warn { background:#fff4df; color:#8a5a00; }
.status-error { background:#fdecec; color:#a42323; }
.status-info { background:#eaf4ff; color:#1f5c99; }
.day-start-selector { display:flex; align-items:center; gap:6px; }
.day-start-hint { font-size:12px; color:#667; margin-left:2px; }

.timer-btn { min-width:40px; height:34px; border-radius:8px; font-size:12px; font-weight:700; padding:0 8px; }
.timer-controls { gap:6px; }
.timer-display { font-size:12px; min-width:78px; }

@media (hover: none), (pointer: coarse) {
  .activity-log-btn { opacity: 1; pointer-events: auto; left: calc(100% - 24px); }
}

.notification-region { position:fixed; top:14px; right:14px; z-index:5000; display:flex; flex-direction:column; gap:8px; }
.toast { display:flex; align-items:center; gap:10px; min-width:220px; max-width:360px; padding:10px 12px; border-radius:10px; color:#fff; box-shadow:0 8px 20px rgba(0,0,0,.16); animation:toastIn .22s ease; }
.toast-info { background:#2f7ad0; }
.toast-success { background:#2d9d61; }
.toast-warn { background:#b7791f; }
.toast-error { background:#c0392b; }
.toast-action { margin-left:auto; border:none; background:rgba(255,255,255,.2); color:#fff; border-radius:6px; padding:4px 8px; cursor:pointer; }
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
.toast-action:focus-visible,
.timer-btn:focus-visible,
.activity-log-btn:focus-visible {
  outline: 3px solid #1f6feb;
  outline-offset: 2px;
}
.toast-exit { animation:toastOut .22s ease forwards; }
@keyframes toastIn { from { opacity:0; transform:translateY(-6px);} to { opacity:1; transform:translateY(0);} }
@keyframes toastOut { from { opacity:1; transform:translateY(0);} to { opacity:0; transform:translateY(-5px);} }