/* ===== Base button ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    border: 1px solid transparent;
    transition: background 0.2s;
}

/* ===== Neutral buttons (settings / calendar / logout) ===== */
.btn-settings,
.btn-calendar,
.btn-logout {
    background: var(--white);
    color: var(--gray-dark);
    border: 1px solid var(--gray-light);
}

.btn-settings:hover,
.btn-calendar:hover,
.btn-logout:hover {
    background: var(--gray-soft);
    border-color: var(--gray-mid);
}

.btn-settings {
    margin-left: 12px;
}

/* ===== Destructive action (toolbar, combined with .btn) ===== */
.btn-delete {
    background: var(--red-bg);
    color: var(--red);
    border: 1px solid var(--red-border);
}

.btn-delete:hover,
.btn-delete.active {
    background: var(--red);
    color: var(--white);
    border-color: var(--red);
}

/* ===== Auth buttons (combined with .btn) ===== */
.btn-login {
    background: var(--cyan);
    color: var(--white);
}

.btn-login:hover {
    background: var(--cyan-hover);
}

.btn-register {
    background: var(--gray-light);
    color: var(--gray);
}

.btn-register:hover {
    background: var(--gray-soft);
}

/* =====================================================================
   Стоят самостоятельно (без .btn) — рождаются из modal.js /
   confirm-delete-modal.js, поэтому у каждого полный набор свойств.
   ===================================================================== */

.btn-add {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    border: none;
    background: var(--cyan);
    color: var(--white);
    transition: background 0.2s;
}

.btn-add:hover {
    background: var(--cyan-hover);
}

.btn-cancel {
    background: var(--white);
    color: var(--gray-mid);
    border: 1px solid var(--gray-light);
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 13px;
    cursor: pointer;
}

.btn-save {
    background: var(--cyan);
    color: var(--white);
    border: none;
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
}

.btn-save:hover {
    background: var(--cyan-hover);
}

.btn-confirm-delete {
    background: var(--red);
    color: var(--white);
    border: none;
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
}

.btn-confirm-delete:hover {
    background: var(--red-hover);
}

/* ===== Icon-only buttons ===== */
.btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: var(--br-md);
    color: var(--gray-dark);
    border: 1px solid var(--gray-light);
    background: var(--white);
    cursor: pointer;
}

.btn-icon:hover {
    background: var(--gray-soft);
    border-color: var(--gray-mid);
}

.btn-icon-delete:hover {
    background: var(--red-bg);
    border-color: var(--red-border);
    color: var(--red);
}