html, body {
    margin: 0;
    height: 100%;
    font-family: -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
    background: #f6f7f9;
}

.app-nav {
    height: 2.25rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0 0.75rem;
    background: #fff;
    border-bottom: 1px solid #e0e0e0;
    font-size: 0.9rem;
}

.app-nav a {
    color: #555;
    text-decoration: none;
}

.app-nav a.active {
    color: #1a73e8;
    font-weight: 600;
}

#calendar-wrapper {
    height: calc(100vh - 2.25rem);
    padding: 0.75rem;
    box-sizing: border-box;
}

#calendar {
    height: 100%;
    background: #fff;
    border-radius: 8px;
    padding: 0.5rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12);
}

.fc-activity-title {
    font-weight: 600;
    padding: 2px 4px 0 4px;
}

.fc-activity-desc {
    padding: 0 4px 2px 4px;
    font-size: 0.85em;
    opacity: 0.9;
}

dialog#event-dialog {
    border: none;
    border-radius: 8px;
    padding: 1.25rem 1.5rem;
    width: 360px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
}

dialog#event-dialog::backdrop {
    background: rgba(0, 0, 0, 0.35);
}

#event-dialog h2 {
    margin: 0 0 0.75rem 0;
    font-size: 1.1rem;
}

#event-form label {
    display: block;
    font-size: 0.85rem;
    color: #444;
    margin-bottom: 0.6rem;
}

#event-form input {
    display: block;
    width: 100%;
    box-sizing: border-box;
    margin-top: 0.2rem;
    padding: 0.4rem 0.5rem;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 0.95rem;
}

.field-row {
    display: flex;
    gap: 0.75rem;
}

.field-row label {
    flex: 1;
}

#event-form input:disabled {
    background: #f1f1f1;
    color: #999;
}

.hours-stepper {
    display: flex;
    align-items: stretch;
    gap: 0.4rem;
    margin-top: 0.2rem;
}

.hours-stepper input {
    margin-top: 0;
    text-align: center;
}

.btn-step {
    width: 2.2rem;
    flex: 0 0 auto;
    font-size: 1.1rem;
    line-height: 1;
    padding: 0;
}

#field-hours {
    -moz-appearance: textfield;
}

#field-hours::-webkit-inner-spin-button,
#field-hours::-webkit-outer-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.dialog-error {
    color: #c5221f;
    font-size: 0.85rem;
    min-height: 1.1em;
    margin: 0 0 0.5rem 0;
}

.dialog-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.dialog-actions .spacer {
    flex: 1;
}

.btn {
    padding: 0.45rem 0.9rem;
    border-radius: 4px;
    border: 1px solid #ccc;
    background: #fff;
    cursor: pointer;
    font-size: 0.9rem;
}

.btn-primary {
    background: #1a73e8;
    border-color: #1a73e8;
    color: #fff;
}

.btn-danger {
    background: #fff;
    border-color: #c5221f;
    color: #c5221f;
}