:root {
    --kalender-accent: #21759b;
    --kalender-accent-dark: #185a78;
    --kalender-danger: #b3392c;
    --kalender-border: #dcdcdc;
    --kalender-busy: #b7bcc2;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Arial, sans-serif;
    color: #333;
    background: #fff;
}

#kalender-app {
    padding: 0.75rem;
}

#messages .notices {
    padding: 0.5rem 0.75rem;
    border-radius: 4px;
    margin-bottom: 0.75rem;
}
#messages .notices.green { background: #e5f6ec; color: #1c6b3d; }
#messages .notices.red { background: #fbe6e4; color: var(--kalender-danger); }
#messages .notices.yellow { background: #fdf3d8; color: #8a6414; }

#kalender-bar {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
}

#kalender-user { color: #555; font-size: 0.9rem; }

.kalender-button {
    display: inline-block;
    padding: 0.4rem 0.9rem;
    background: var(--kalender-accent);
    color: #fff;
    border: none;
    border-radius: 4px;
    text-decoration: none;
    font-size: 0.9rem;
    cursor: pointer;
}
.kalender-button:hover { background: var(--kalender-accent-dark); }
.kalender-button-secondary { background: #7c8a95; }
.kalender-button-secondary:hover { background: #63707a; }
.kalender-button-danger { background: var(--kalender-danger); margin-right: auto; }
.kalender-button-danger:hover { background: #8f2c22; }

#kalender-login-details summary {
    cursor: pointer;
    color: var(--kalender-accent);
    font-size: 0.9rem;
}

.kalender-login-form {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-end;
    gap: 0.6rem;
    margin-top: 0.5rem;
}
.kalender-login-form label {
    display: flex;
    flex-direction: column;
    font-size: 0.8rem;
    color: #555;
}
.kalender-login-form input {
    padding: 0.35rem 0.5rem;
    border: 1px solid var(--kalender-border);
    border-radius: 4px;
}

#kalender-calendar {
    max-width: 100%;
}

.kalender-busy {
    background: var(--kalender-busy) !important;
    opacity: 0.6;
}

#kalender-modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    align-items: center;
    justify-content: center;
    z-index: 1000;
}
#kalender-modal[hidden] { display: none; }
#kalender-modal:not([hidden]) { display: flex; }

#kalender-event-form {
    background: #fff;
    padding: 1.25rem;
    border-radius: 6px;
    width: 100%;
    max-width: 420px;
    max-height: 90vh;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
}

#kalender-event-form label {
    display: flex;
    flex-direction: column;
    font-size: 0.85rem;
    color: #444;
    gap: 0.2rem;
}

#kalender-event-form input,
#kalender-event-form textarea {
    padding: 0.4rem 0.5rem;
    border: 1px solid var(--kalender-border);
    border-radius: 4px;
    font-family: inherit;
}

#kalender-event-form .kalender-inline {
    flex-direction: row;
    align-items: center;
    gap: 0.4rem;
}

.kalender-modal-actions {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.kalender-error {
    color: var(--kalender-danger);
    font-size: 0.85rem;
    margin: 0;
}