/* ===================================
   BUTTON SYSTEM
   =================================== */
.btn {
    width: 100%;
    padding: 12px 20px;
    border: none;
    border-radius: 12px;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-family: 'Inter', sans-serif;
    box-shadow: var(--shadow-sm);
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn:active {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

.btn-primary {
    background: var(--primary);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-dark);
}

.btn-outline {
    background: white;
    color: var(--text);
    border: 2px solid var(--border);
}

.btn-outline:hover {
    background: var(--surface);
    border-color: var(--primary);
    color: var(--primary);
}

.btn-danger {
    background: white;
    color: var(--danger);
    border: 2px solid var(--danger);
}

.btn-danger:hover {
    background: var(--danger);
    color: white;
}

.btn-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

/* Modal Buttons */
.btn-modal-cancel {
    background: white;
    color: var(--text-secondary);
    border: 2px solid var(--border);
    padding: 12px 24px;
    border-radius: 12px;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: 'Inter', sans-serif;
}

.btn-modal-cancel:hover {
    background: var(--surface);
    border-color: var(--text-secondary);
}

/* Delete Button */
.pattern-delete-btn {
    position: absolute;
    top: 12px;
    right: 12px;
    background: var(--danger);
    color: white;
    border: none;
    font-size: 0.625rem;
    font-weight: 500;
    padding: 2px 6px;
    border-radius: 4px;
    cursor: pointer;
    opacity: 0;
    transition: all 0.2s ease;
    z-index: 110;
    font-family: 'Inter', sans-serif;
    line-height: 1;
}

.pattern-card:hover .pattern-delete-btn {
    opacity: 1;
}

.pattern-delete-btn:hover {
    background: #DC2626;
    transform: scale(1.05);
}

/* 터치 디바이스: hover 없으므로 항상 표시 */
@media (hover: none) {
    .pattern-delete-btn {
        opacity: 0.7;
        font-size: 0.75rem;
        padding: 4px 10px;
    }
}

/* Calendar Button */
.calendar-btn {
    background: var(--surface);
    border: 2px solid var(--border);
    border-radius: 6px;
    padding: 3px;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 26px;
    height: 26px;
}

.calendar-btn:hover {
    border-color: var(--primary);
    background: white;
}

.calendar-btn svg {
    width: 14px;
    height: 14px;
    color: var(--text-secondary);
}

.calendar-btn:hover svg {
    color: var(--primary);
}

/* Calendar Navigation Buttons */
.calendar-nav-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    border-radius: 6px;
    transition: background-color 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.calendar-nav-btn:hover {
    background: var(--surface);
}

.calendar-nav-btn svg {
    width: 16px;
    height: 16px;
    color: var(--text-secondary);
}